BOP lx (2)

User’s Manual Shaffer® 71/16"–5,000 psi LXT Ram Blowout Preventer

Customer Name Rig Name Sales Order Number

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Reference

Reference Description

Shaffer 71/16"–5,000 psi LXT Ram BOP This document contains proprietary and confidential information which belongs to National Oilwell Varco; it is loaned for limited purposes only and remains the property of National Oilwell Varco. Reproduction, in whole or in part; or use of this design or distribution of this information to others is not permitted without the express written consent of National Oilwell Varco. This document is to be returned to National Oilwell Varco upon request and in any event upon completion of the use for which it was loaned. © National Oilwell Varco

National Oilwell Varco 12950 West Little York Houston, TX 77041 Phone: 713-937-5000 Fax: 713-856-4138

Document Number

Rev.

29100155

D

Revision History

D

12-16-2009

Update graphics and technical corrections

SF

C

01-09-2009

Update Chapter 3 and 4

BB

B

23-04-2009

Update graphics

SF

A

09-02-2006

Issued for implementation

CAN

Rev

Date (dd.mm.yyyy)

Reason for issue

Prepared

RH

RH

Checked

Approved

Change Description Revision

Change Description

A

First issue

B

Updated various graphics using Pro-E models and made minor corrections to parts tables for single BOP.

C

Update lock bar maintenance procedures.

D

Updated various graphics using Pro-E models and made few corrections to chapters.

LXT Ram Blowout Preventer Revision D Page iii of iv

Table of Contents Chapter 1: General Information Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Notes, Cautions, and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Illustrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Safety Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Personnel Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Recommended Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 General System Safety Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Replacing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Proper Use of Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Equipment Repairs or Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Hydraulic Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Welding and Cutting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Chapter 2: Introduction General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 BOP Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Door Locking System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Hydraulic Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Chapter 3: Installation and Operation Preinstallation Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Condition of BOP is Unknown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 BOP Maintained on Scheduled Maintenance Program . . . . . . . . . . . . . . . . . . . . 3-2 Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 Hydraulic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 Hydraulic Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 Closing and Opening the Rams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10 Manual Locking the Rams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 Unlocking Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 Opening Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 Closing Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Chapter 4: Maintenance Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 When to Call a Service Representative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Daily Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 Monthly Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 Three-Month Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Yearly Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8 Three-Year to Five-Year Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

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Table of Contents Pressure Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9 Field Wellbore Pressure Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9 Hydraulic Pressure Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15 Corrective Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16 Door Seal Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16 Emergency Ram Shaft Packing Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17 Ram Assembly Removal and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19 Changing Pipe and Blind Ram Rubbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24 Offset Rams for Dual Completions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24 Aluminum Drill Pipe Rams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25 Storing the LXT BOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25 LXT BOP Data Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25 Cleaning and Storage of the LXT BOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

Chapter 5: Specifications and Parts Lists Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Parts Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Ordering Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Recommended Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Exploded Views and Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Handwheel Assembly (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

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General Information Conventions This manual is intended for use by field engineering, installation, operation, and repair personnel. Every effort has been made to ensure the accuracy of the information contained herein. National Oilwell Varco (NOV), will not be held liable for errors in this material, or for consequences arising from misuse of this material.

Notes, Cautions, and Warnings Notes, cautions, and warnings provide readers with additional information, and to advise the reader to take specific action to protect personnel from potential injury or lethal conditions. They may also inform the reader of actions necessary to prevent equipment damage. Please pay close attention to these advisories. Note:

ii The note symbol indicates that additional information is provided about the current topic.

Caution:

The caution symbol indicates that potential damage to equipment, or injury to personnel exists. Follow instructions explicitly. Extreme care should be taken when performing operations or procedures preceded by this caution symbol.

Warning:

Wa r n

in g

The warning symbol indicates a definite risk of equipment damage or danger to personnel. Failure to follow safe work procedures could result in serious or fatal injury to personnel, significant equipment damage, or extended rig down time.

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General Information

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Illustrations Illustrations (figures) provide a typical and graphical representation of equipment, it’s components or screen snapshots for use in identifying parts, establishing nomenclature or calling out notes and procedures. Illustrations may or may not show all current aspects of the equipment nor be drawn to scale. Illustrations will not reflect any changes made after publication. For component information specific to the product purchased, see the technical drawings included with your National Oilwell Varco documentation.

Safety Requirements The National Oilwell Varco equipment is installed and operated in a controlled drilling rig environment involving hazardous situations. Proper maintenance is important for safe and reliable operation. Procedures outlined in the equipment manuals are the recommended methods of performing operations and maintenance.

To avoid injury to personnel or equipment damage, carefully observe requirements outlined in this section.

Personnel Training All personnel performing installation, operations, repair, or maintenance procedures on the equipment, or those in the vicinity of the equipment, should be trained on rig safety, tool operation, and maintenance to ensure their safety.

Personnel should wear protective gear during installation, maintenance, and certain operations.

Contact the National Oilwell Varco training department for more information about equipment operation and maintenance training.

Recommended Tools Service operations may require the use of tools designed specifically for the purpose described. The equipment manufacturer recommends that only those tools specified be used when stated. Ensure that personnel and equipment safety are not jeopardized when following service procedures and that personnel are not using tools that were not specifically recommended by the manufacturer.

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General Information

1

General System Safety Practices The equipment discussed in this manual may require or contain one or more utilities such as electrical, hydraulic, pneumatic, or cooling water.

Read and follow the guidelines below before installing equipment or performing maintenance to avoid endangering exposed persons or damaging equipment.

R

Isolate energy sources before beginning work.

R

Avoid performing maintenance or repairs while the equipment is in operation.

R

Wear proper protective equipment during equipment installation, maintenance, or repair.

Replacing Components R

Verify that all components (such as cables, hoses, etc.) are tagged and labeled during assembly and disassembly of equipment to ensure correct installment.

R

Replace failed or damaged components with original equipment manufacturer certified parts. Failure to do so could result in equipment damage or injury to personnel.

Routine Maintenance Equipment must be maintained on a routine basis. See product-specific service manuals for maintenance recommendations.

Failure to conduct routine maintenance could result in equipment damage or injury to personnel.

Proper Use of Equipment National Oilwell Varco equipment is designed for specific functions and applications, and should be used only for its intended purpose.

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General Information

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Safety Precautions Exposure to the daily hazards of drilling can lead rig crews and service personnel to disregard or overlook hidden hazards. The safety precautions listed below should be observed at all times.

Equipment Repairs or Adjustments Turn off the system power and bleed all pressure prior to making any repairs or adjustments that do not require system power.

Hydraulic Lines Hydraulic lines carrying fluids at high pressures can inflict potentially fatal injuries if the pressure escapes. Protect hydraulic lines from cutting, scraping, pinching, or other physical damage. Always wear hard hats and safety glasses when working around hydraulic lines. Bleed the pressure from any hydraulic line prior to disconnecting any fittings. Respect the prescribed ASME code minimum bend radius for hydraulic lines. Bending around too short a radius can rupture the line.

Welding and Cutting Do not weld or operate acetylene-cutting torches near unprotected electrical cable, flexible hose, or hose bundles. Weld spatter can seriously damage the hose or cable. Ensure no slag or spatter enters the hydraulic system.

Replacement Parts Many of the BOP components, though apparently similar to commercial hardware, are manufactured to system design specifications. To avoid possible hazardous failures, use only exact NOV replacement parts or assemblies (see Chapter 5, titled "Specifications and Parts Lists”).

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Introduction General Description National Oilwell Varco (NOV) manufactures Shaffer® 7 1/16" LXT blowout preventers with 5,000 psi working pressure and 3,000 psi working pressure. Both preventers are identical in operation. The difference between the two preventers is the API end connections, which limit the working pressure of the preventer. The Shaffer® hydraulic operated model LXT ram blowout preventer (LXT BOP) with manual locking operators provides a rugged, reliable preventer that is easily serviced in the field. The manual lock LXT BOP is available in single and double models (see Figure 2-1). Contact NOV sales for special configurations.

Figure 2-1. LXT Single and Double Preventers

NOV manufactures manual lock LXT BOPs in the sizes shown in the table titled “LXT BOP Available Sizes and Working Pressures”.

LXT BOP Available Sizes and Working Pressures Working Pressure

Bore

5,000 psi (345 bar)

7-1/16” (180 mm)

3,000 psi (207 bar)

7-1/16" (180 mm)

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Introduction

Special features include: R

Patented “Boltless Door” design for fast and simple ram changes.

R

Radial door seals between door and body.

R

Standard internal H2S trim.

R

One piece ram assemblies.

R

Wear rings between the piston and cylinder to increase seal life.

R

Polyurethane lip-type piston seals with lifetime lubrication.

R

Lip-type ram shaft seals to hold the wellbore pressure and the opening hydraulic pressure.

R

Secondary ram shaft packing seals.

R

Slider Bar, Protective Cover (Optional).

Slider Bar Cover

Figure 2-2. LXT BOP Protective Cover (P/N 20039943)

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Introduction

The LXT preventer is designed for drilling and workover service. The LXT preventers are hydraulically operated and can be manually locked by turning a handle or (optional) handwheel (see Figure 3-5 on page 3-8) . The standard trim unit is suitable for internal H2S environments. Units can be manufactured for Arctic to -75 ºF (-59 ºC) and full H2S environmental services. Standard units can be retrofitted for full environmental H2S service. NOV preventers are manufactured in accordance with the American Petroleum Institute (API) specification 16A and the National Association of Corrosion Engineers (NACE) document NACE Standard MR 0175 (current revision). This manual provides the installation, operation, and maintenance procedures for standard manual lock LXT BOP models with manual lock operators. The manual lock operators are used to close the ram assemblies on the drill pipe and close off the well bore. The manual lock operators require a hydraulic closing pressure of 1,500 psi (103 bar) to accomplish sealing the well bore pressure to the rated working pressure of the preventer. Maximum working pressure for the hydraulic operators is 3,000 psi (207 bar). When the rams are hydraulically closed, the manual lock acme thread locking bolts are rotated clockwise to manually lock the rams in the closed position (see Figure 2-3). Acme Thread Lock Bolt Hydraulic Operator

Secondary Seal Assemblies

Hydaulic Operator (3,000 psi WP)

Locking Bars (Manually removed and inserted)

Side Outlets

Boltless Door Assemblies

Figure 2-3. LXT Blowout Preventer

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Introduction

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BOP Functional Overview A ram BOP is a safety tool used during the drilling or workover operation to control well bore pressure. The BOP achieves this pressure control by closing its rams to seal around drilling tubulars, an open hole or to shear drilling tubulars under various drilling conditions. Under normal drilling the BOP has little or no internal pressure. However, if the drill bit penetrates a high-pressure oil or gas pocket in the well, the BOP rams can be closed so that the high-pressure returning well fluid (whose pressure has overcome the weight of the drilling mud) will not blow out of the well. The BOP is normally composed of a pressure containing body with a vertical through bore with doors (including door operators) on either side, which hold the BOP rams and their hydraulic operating mechanisms. Flanged or studded API connections are configured on either end of the body at the vertical bore to facilitate connecting the LXT preventer to a BOP Stack or other well control components. The body is generally configured with two outlets (one on each side) under each ram cavity located 90º to the doors, which are routed laterally through the body to the vertical bore forming a well bore fluid outlet path. The side outlets are used in conjunction with the choke and kill valves, choke manifold and other well control equipment to bring the high well bore pressure under control using a variety of well control techniques available to the well operator. (See Figure 2-3 on page 2-3 for BOP general features.) The LXT Ram BOPs are functioned hydraulically by the rig operator using the BOP Control System. BOP controls are generally located on the Drillers and/or Toolpushers Control Panels and at the Hydraulic Power Unit (HPU).

Door Locking System The LXT BOP door locking system provides simple and fast opening and closing of BOP doors, representing a major step toward easy servicing. Several operational benefits are available from this system. The LXT BOP door locking system departs from the conventional bolting method. The entire door attachment method can be accomplished by a single individual opening and closing the doors. The LXT BOP door locking system replaces axially-loaded threaded members (bolts) with transaxially-loaded bearing members. The bearing members act as locking pins, taking the separation load (generated by well bore pressure) in bearing and shear only, not in tension. The bearing members (locking bars) are contained between the body and door on the BOP, providing a pressure containing lock. The number of locking members (locking bars) is reduced to two, running across the top and bottom of the door (see Figure 2-3 on page 2-3). This replaces the threaded member system of four to ten bolts per door. Actuation or engagement of the two locking members is fast and easy, dramatically reducing the opening and closing time compared to the threaded member system which requires that each bolt be made up separately. The LXT BOP door locking system utilizes a set of lateral grooves located in both the door and BOP body running perpendicular to the ram cavity. These grooves, when aligned, allow load bearing (locking) bars to lock the door and body together. The round lock bars are inserted into or pulled from the grooves to accomplish the manual lock and unlock process. Groove pairs and locking bars are located both above and below the ram cavity spanning the interface between the door and body. (See Figure 2-4 on page 2-5.)

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Introduction

Acme Thread Locking Bolt Hydraulic Operator

Hydraulic Operator

Support Rods

BOP Body Lockbar Door Lockbar Grooves Grooves

Lockbar (2 per door) Support Rods

Figure 2-4. Lockbar Grooves

Once the lock bars are removed, the door assembly is pulled away from the BOP body sliding along two support rods allowing access to the ram assembly. The LXT door assembly does not hinge on a bracket, thus providing a manual process that is simple, fast and reliable. For more detail about the door locking system, see the section titled "Opening Doors" on page 3-12 and the section titled "Closing Doors" on page 3-14).

Hydraulic Operators The LXT BOP is equipped with manual lock hydraulic operators. The manual lock hydraulic operators are located either side of the LXT body (see Figure 2-4). The LXT BOP manual lock hydraulic operators are closed with 1,500 psi (103 bar). This pressure squeezes the ram assembly rubber around the pipe and between the ram assemblies and the upper seat of the ram cavity to seal-off the well bore pressure. Each operator is manually locked in the close position by the clockwise rotation of the acme thread locking bolt (see Figure 2-4). The locking bolts prevent the rams from being opened by the well bore pressure, even when closing hydraulic pressure is removed. The hydraulic operators do not require adjustment for changes in ram types or to compensate for ram wear over time.

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Introduction

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Installation and Operation Preinstallation Inspection The inspection process includes the activities listed below: 1. Thoroughly clean the LXT manual lock blowout preventer (BOP) before installation. (See the table titled "LXT Ram BOP Cleaning and Lubricating Instructions" on page 4-27.) 2. Clean and inspect the sealing surface of the ring groove for minor pits and scratches; remove these with emery cloth. If there is excessive damage, call a National Oilwell Varco (NOV) service representative. 3. Clean and inspect studs and nuts. Replace any that are damaged. 4. Ensure the correct size rams are in each cavity. The part number is stamped into the block of each ram. 5. Thoroughly clean and lubricate the inside of the LXT BOP. 6. Ensure that all support rods are installed prior to BOP operation.

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Operation of BOP without support rods in place will effect sealing characteristics and create a drop hazard of door assemblies, which is extremely dangerous to personnel.

7. Determine if BOP has been properly maintained or condition is unknown and then proceed to one of the following, as applicable: R

the section titled "Condition of BOP is Unknown" on page 3-2; or

R

the section titled "BOP Maintained on Scheduled Maintenance Program" on page 3-2.

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Condition of BOP is Unknown If the condition of the BOP is unknown (e.g., stored for some length of time, has not been maintained on a scheduled maintenance program, etc.), perform a three-month maintenance check, as described in the section titled "Three-Month Preventive Maintenance" on page 4-4. The three-month maintenance check includes: R

Visual inspection and thorough greasing the inside of the BOP;

R

Performing a field wellbore pressure test (see the section titled "Field Wellbore Pressure Test" on page 4-9);

R

Performing an hydraulic pressure test (see the section titled "Hydraulic Pressure Test" on page 4-11);

R

Operate the manual locks (see the section titled "Manual Locking the Rams" on page 3-12).

BOP Maintained on Scheduled Maintenance Program If the BOP has been properly maintained (scheduled maintenance program), a monthly maintenance check is all that is required. (See the section titled "Monthly Preventive Maintenance" on page 4-3.) The monthly maintenance check includes: R

Performing a field wellbore pressure test (see the section titled "Field Wellbore Pressure Test" on page 4-9);

o

Checking for external hydraulic leaks while pressure testing.

Verify that door lock bars are propperly lubricated. Failure to heed this caution may cause difficulty manually rotating the lock bar.

ii Cleaning, inspection and testing of the LXT BOP immediately after completion of drilling operations reduces installation time on the next well (see the section titled "Cleaning and Storage of the LXT BOP" on page 4-25).

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Installation and Operation

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Installation Instructions 1. Install BOP right-side-up. The LXT models have lifting lugs labeled ‘TOP’, which are above and to the right of the side outlets (see Figure 3-1). On all LXT models: R

Externally, the side outlets for the choke and kill lines are below the rams;

R

Internally, the skids in the ram compartments are below the rams, and ram sealing areas are located in the top of the ram cavity.

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If the BOP is installed upside-down, it will not contain wellbore pressure.

Side Outlet Figure 3-1. Lifting LXT BOP

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Installation and Operation

2. Lift the LXT manual lock BOP. On models with lifting lugs cast into the body, the BOP is lifted by wrapping a chain or lifting strap of sufficient strength around the lug (see Figure 3-1 on page 3-3).

Do not lift the BOP by the hydraulic operators. This will damage the operator cylinder, piston assembly and/or the ram shaft and prevent the BOP from working correctly. Do not lift the BOP with the slider bars.This will damage the slider bars and prevent the BOP from working correctly.

ii For BOP weight information, see the table titled "BOP Characteristics" on page 5-2. Use a chain or cable capable of lifting the weight given.

3. Make flanged and studded connections: (See Figure 3-2.) a. Install the ring gasket dry. See the table titled "API Ring Gaskets" on page 5-15, for the proper part number. b.

Install the BOP on the mating flange.

c.

Lubricate the stud threads and nut faces with Moly Paste Lube 503 (P/N 7403582) or grease specified in API BUL 5A2: Thread Compounds.

Flange Connection

Studded Connection

Figure 3-2. End Connections

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Installation and Operation

3

d. Install the studs and/or nuts. See the table titled "API Nuts" on page 5-13 and the table titled "Tap End Studs for API Flanges" on page 5-14 for the proper part number.

Use extreme care during removal and installation of studs and nuts. Inspect the threads of the studs and stud hole for damage such as deformation, stripping, or burns. Do not over-torque studs when installing in studded flange.

Use specified lubricants. Do not use Loctite™ or similar compounds.

e. Tighten all nuts uniformly in a diametrically staggered pattern, as shown in Figure 3-3. See the table titled "Recommended Flange Bolt Torque" on page 36 for proper torque specifications.

1

12 8

6

9

3

4

10

5

7 11

2

Figure 3-3. Flange Bolting Sequence

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Installation and Operation

Recommended Flange Bolt Torque Torque* (using API thread compound)

Torque* (using Moly Paste 503—P/N 7403582)

Bolt Size

ft-lb.

Nm

ft-lb.

Nm

¾"-10 UNC

200

271.2

114

154

7

325

440.6

181

245

1"-8 UNC

475

644.0

269

365

1 1/8"-8 UNC

600

813.5

386

523

1 ¼"-8 UNC

900

1,220.2

533

723

1 3/8"-8 UNC

1,200

1,627.0

712

965

1 ½"-8 UNC

1,400

1,898.2

926

1,255

1 5/8"-8 UNC

1,700

2,304.9

1,180

1,600

1 ¾"-8 UNC

2,040

2,765.9

1,476

2,001

1 7/8"-8 UNC

3,220

4,365.7

1,818

2,465

2"-8 UNC

3,850

5,219.9

2,209

2,995

2 ¼"-8 UNC

5,250

7,130.0

3,149

4,269

2 ½"-8 UNC

7,250

9,860.0

4,324

5,862

/8"-9 UNC

* Torque values are satisfactory for both standard and H2S studs. Reference API specification 6A. The above table shows torque values arrived at by using new commercial stud bolts and nuts, well-lubricated threads, and nut faces with API thread compound (API Bul. 5A2: Thread Compounds). This produces a stress of 52,500 psi (362.0 MPa) in the bolting.

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Installation and Operation

3

4. Repeat step 3 to connect the side flanges. 5. Connect hydraulic lines from BOP closing unit to the 'Open' and 'Close' ports of the BOP. Make sure all connections are clean and tight. Each set of rams requires one opening and one closing line.

ii Opening and closing hydraulic ports are clearly marked on the front and back side of the BOP (see Figure 3-4). A gauge and valve can be included in the opening and closing hydraulic lines to the BOP. This will facilitate testing procedures (see Figure 4-10 on page 4-14).

Open Ports (1 per cavity) (close ports on back side)

TOP OPEN

Figure 3-4. Open and Close Hydraulic Ports

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Installation and Operation

6. Install handwheel (see section titled "Handwheel Assembly" located in the Specifications and Parts Lists of this user's manual).

ii Two handwheel assemblies are required on a single LXT preventer and four handwheel assemblies are required on a double LXT preventer.

A universal joint and handwheel are optional (P/N 185599) for each locking shaft. Handwheel extensions are cut from 2 inch (50.80mm) schedule 40 pipe furnished by the customer. Perform the following: a. Fabricate a handwheel extension for each locking shaft. b.

Attach a handwheel to one end of each extension.

c.

Attach a universal joint to the other end of each handwheel extension (see Figure 3-5).

Handwheel Assembly

Universal Joint

2” Schedule 40 Pipe (Customer Supplied) Figure 3-5. Manual Lock Handwheel Assembly (Optional)

7. Perform a Field Wellbore Pressure Test. (See the section titled "Field Wellbore Pressure Test" on page 4-9.)

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3

Installation and Operation

Operation Hydraulic Operation The rams can be hydraulically closed and manually locked. Under normal operating conditions, 1,500 psi (103 bar) hydraulic pressure is recommended. This operating pressure will close any model LXT BOP and contain its rated wellbore pressure. Hydraulic operating pressure may be increased to 3,000 psi (207 bar) on any LXT BOP, if desired. LXT Fluid Volume Requirements Working Pressure

Bore Size

Piston Size

Closing Ratio

Gallons to Open

Gallons to Close

5,000 psi

7"

5"

8.45

.32

.39

3,000 psi

7"

5"

8.45

.32

.39

Hydraulic Fluid Hydraulic fluid under pressure drives the pistons, which then close and opens the rams. The hydraulic fluid used should have the following characteristics: R

Non-freezing in cold climates

R

Lubricity to reduce wear

R

Chemical compatibility with the elastomer seals

R

Corrosion inhibitors for metal surface protection.

Recommended Hydraulic Fluid R

Hydraulic oil with viscosity between 200 and 300 SSU at 100 ºF (38 ºC). In the LXT closed hydraulic system, there is no waste of oil and fluid costs are negligible.

R

Where pollution due to accidental spillage of hydraulic fluid is a problem, use a water soluble oil or premix control fluid. To prevent freezing at lower temperatures, adding ethylene glycol without any additives is recommended. Do not use commercial antifreeze mixes.

Emergency Fluid Recommendations In an emergency, where hydraulic fluid is lost and the BOP must be operated, the fluids listed below can be substituted: 1. When using hydraulic oil: R

Add motor oil (SAE 10W is recommended but heavier oils can be used)

R

Add water if motor oil is not available, but after the emergency, the hydraulic system must be flushed and refilled with hydraulic oil

2. When using a water soluble mixture or premix fluid, add more water.

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Installation and Operation

LXT Ram Blowout Preventer Revision D Page 3-10 of 14

3. After the emergency, replace the fluid in the system with the proper mixture.

Do not use the following fluids: Diesel fuel or kerosene—these fluids cause the rubber parts to swell and deteriorate. Drilling mud—the grit in this fluid will cause the pistons and cylinders to wear and gall rapidly.

Closing and Opening the Rams Closing the Rams 1. Apply 1,500 psi (103 bar) closing hydraulic pressure (see the section titled "Manual Locking the Rams" on page 3-12). 2. Verify that the rams close by observing the inward movement of the piston tail rod (see Figure 3-6 on page 3-11).

Opening the Rams

Before opening the rams, turn both locking shafts counterclockwise to ensure that the rams are unlocked. If the rams are partly locked, the locking shaft threads may be damaged when the rams are hydraulically opened.

1. Apply 1,500 psi (103 bar) opening hydraulic pressure. 2. Verify that the rams open by observing the outward movement of the piston tail rods (see Figure 3-6 on page 3-11).

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Operator in CLOSED and UNLOCKED position

Operator in CLOSED and LOCKED position

Installation and Operation

Handle for 7”-5M Locking Shaft Manual Operation

Operator in OPEN position and OPEN Door

Manual Locking Shaft Piston Tail Rod

Operator in OPEN position and CLOSED Door

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3

Figure 3-6. Manual Lock Rams

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Installation and Operation

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Manual Locking the Rams 1. Apply 1,500 psi (103 bar) closing hydraulic pressure. 2. Using the handle (see Figure 3-6 on page 3-11) or handwheel, carefully rotate each locking shaft clockwise until it locks; each locking shaft will move inward until it stops against ram shaft tailrod.

Do not over tighten. If over tightened, the locking shaft can be damaged.

Control system hydraulic pressure may now be removed.

Unlocking Operation

Do not apply opening hydraulic pressure while the BOP is manually locked. This may damage the locking shaft threads.

1. Apply 1,500 psi (103 bar) hydraulic closing pressure. 2. Rotate the locking shaft counterclockwise until it stops. 3. Rotate 1/8 of a turn clockwise to prevent temperature changes from jamming the locking shaft in the unlocked position. 4. See the section titled "Opening the Rams" on page 3-10.

Opening Doors The LXT is designed for easy door opening. (See Figure 3-9 on page 3-14).

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Prior to opening door, ensure that support bars are installed and end caps are installed and secured with end cap retaining bolt. If end caps are not installed, the door can slide off end of support bars (see Figure 3-8 on page 3-13). Failure to heed this warning can cause injury to personnel and damage to equipment.

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Installation and Operation

3

1. Disconnect any external handwheel assemblies. 2. Using dead-blow sledgehammer, strike lock bar retainer cap to break lock bar loose (see Figure 3-9 on page 3-14, item 1). 3. Unscrew and remove hand knobs from the both ends of LXT lock bar (see Figure 3-7).

Hand Knobs

Figure 3-7. LXT Lock Bars

4. Install slide hammer (see Figure 3-9 on page 3-14, item 3). Remove both lock bars from the door to be opened. Use care not to damage lock bar surfaces. Store bars in safe location. 5. To open the door, grip door assembly by cylinder head and pull door away from BOP body (See Figure 3-8).

Support Bars

End Cap Stops Figure 3-8. Opening LXT Door

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Installation and Operation

Closing Doors 1. Prior to closing door, carefully clean and lubricate support rods, lock bars, lock bar grooves on door, and body with standard grease.

ii Do Not Use grease on door seal area of door and body. Lubricate door seal area and body with SAE 10W oil.

2. Push door assembly in against body 3. Install the lock bars into grooves and install retaining caps..

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Ensure that lock bar retaining caps are installed prior to operating BOP.

4. See the section titled "Ram Assembly Removal and Inspection" on page 4-19 for additional information.

1. Strike retainer caps with dead-blow sledgehammer.. Lockbar Retaining Caps

3. Attach slide hammer to pull rods.

2. Unscrew retaining caps.

Slide Hammer Assembly

Figure 3-9. Door Opening

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Maintenance Preventive Maintenance

ii There are two lower and two upper door assemblies installed on a double LXT Ram BOP. Due to the slider bar configuration and the QD male hydraulic coupler (item 8) on the door, to the QD female hydraulic coupler (item 25) on the body (see the table titled "BOP and Door Components" on page 5-4 and Figure 5-2 on page 5-5 for illustration). To avoid confusion while installing the doors onto the body, it is recommended to remove only one door assembly at a time from the BOP body. In this manner, the door to body QD hydraulic connections and slider bars will properly align with each other.

Maintenance Schedule The purpose of the maintenance schedule is to detect wear in a NOV Shaffer® manual lock model LXT BOP so that it can be repaired before a failure occurs in a drilling emergency. The inspection sequence avoids repetition of work so that minimum time is required for a thorough maintenance program. (See the table titled "Maintenance Schedule, Manual Lock Ram BOP1" on page 4-2.) Additional information is available in the following publications: R

API Spec. 6A, 16A

R

API RP53

R

NOV Brochures

When to Call a Service Representative Repairs are performed by either the rig personnel or a NOV service representative. The following identifies the repairs normally performed by the rig personnel and provides guidelines to determine when a service representative should be called. Rig personnel normally perform the following: R

Changing rams to different pipe sizes

R

Running wellbore pressure tests and hydraulic pressure tests

R

Replacing worn ram rubbers and door seals

R

Buffing out minor scratches on the ram sealing area and door sealing area of the body.

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Maintenance

A NOV service representative normally will be called to make any repairs that require the hydraulic system to be opened, including the following: R

Replacing piston seals

R

Replacing cylinder seals

R

Replacing manifold pipe seals

R

Re-packing the ram shaft tail rod

R

Re-packing the ram shaft seal assembly

R

Run yearly inspections to determine if the BOP needs to be sent to a repair facility for major rework.

ii The annual inspection includes wellbore pressure tests, hydraulic pressure tests, inspection and measurement of the ram cavities.

Maintenance Schedule, Manual Lock Ram BOP1 Performed At

Interval2 Daily

Monthly

Three Months

Yearly3

Three-Five Years4

Rig

Rig

Rig

Rig

Service/ Repair Facility

By

Summary

Rig Personnel

Operate all rams. Look for external hydraulic leaks (see "Daily Maintenance”).

Rig Personnel

Clean, inspect, and lubricate door lock bars. Run a field wellbore pressure test. Look for external hydraulic leaks (see the section titled "Monthly Preventive Maintenance" on page 4-3).

Rig Personnel

Open doors and inspect visually. Run a field wellbore pressure test and an internal hydraulic pressure test. Operate manual locks (see the section titled "ThreeMonth Preventive Maintenance" on page 4-4).

NOV Service Representative

Open doors. Measure rams and ram cavity. Do field repairs as needed. Run a field wellbore pressure test and an internal hydraulic pressure test. Operate manual locks (see the section titled "Yearly Preventive Maintenance" on page 4-8).

NOV Service Personnel

Completely disassemble. Repair or replace all parts as required. Replace all seals. Run a field wellbore pressure test and an internal hydraulic pressure test. Operate manual locks (see the section titled "Three-Year to FiveYear Maintenance" on page 4-8).

1.

Specific data is required for ordering parts. See the section titled "Ordering Replacement Parts" on page 5-1.

2.

These intervals are typical and serve as convenient designations to separate the simpler from the more complex inspections.

3.

Some operators use the yearly maintenance inspection as a rig acceptance test.

4.

Three-year to five-year maintenance will be performed only after a yearly inspection indicates the need for it.

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Maintenance

4

Daily Maintenance The procedures described below should be performed daily: 1. All rams should be functioned to verify that they operate properly. If possible, watch the rams move by using a mirror to obtain a reflected image of the rams. If this is not possible, observe the movement of the tail rod.

ii Pipe rams should be closed on pipe. Blind rams should be closed and opened when the pipe is out of the hole.

2. Check the tail rod shaft seal areas, cylinder head o-ring areas, manifold pipe seals, door seal areas, weep holes, hydraulic connections, and all pipe plugs for possible leakage of hydraulic fluids (see Figure 4-1 on page 4-4).

ii To observe if the ram shaft packings are leaking, the weep hole plugs must be removed on each door (see Figure 4-12 on page 4-18).

3. Check areas for possible leakage of well fluid and/or hydraulic fluid (see Figure 4-1 on page 4-4).

Monthly Preventive Maintenance Run this test series before starting a new well and at least monthly while drilling. 1. Ensure all lock hand knobs are in place and tight. 2. Clean, inspect, and lubricate door lock bars.

Verify that door lock bars are properly lubricated. Failure to heed this caution can cause removal of bars to become difficult.

3. Run a field wellbore pressure test as described in the section titled "Field Wellbore Pressure Test" on page 4-9. 4. While running the field wellbore pressure test, look for external hydraulic leaks (see Figure 4-1 on page 4-4). 5. If universal joints are installed, check them to ensure they are tight on the locking shaft.

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Maintenance

API Connections Cylinder Head O-Rings

Ram Shaft Weep Holes (1 per Cyl.)

Tail Rod Seal Assemblies

Door Seals

Manifold Seals

Hydraulic Connections All Hydraulic Path This page intentionally left blank. Plugs

Figure 4-1. Possible Leak Areas

Three-Month Preventive Maintenance 1. Before opening the doors, run a field wellbore pressure test as described in the section titled "Field Wellbore Pressure Test" on page 4-9 and a hydraulic pressure test as described in the section titled "Hydraulic Pressure Test" on page 4-11. This information will be very helpful in the following inspections. Also, a NOV service representative can be called at this time if hydraulic system repairs are required. 2. While the rams are closed, turn the locking shaft approximately two turns clockwise and then turn them back to the fully unlocked position. This will verify that the manual locks function satisfactorily. 3. Remove the handle or universal joints from the locking shafts. 4. Open the rams with 1,500 psi (103 bar). 5. Bleed all hydraulic pressure. 6. Open the doors and remove the rams (see the section titled "Ram Assembly Removal and Inspection" on page 4-19). 7. Clean and inspect rams (see the section titled "Ram Assembly Removal and Inspection" on page 4-19). 8. Wash out the inside of the BOP so that it can be inspected. 9. Remove minor pits and scratches from the ram rubber sealing surface with emery cloth.

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Maintenance

4

10. Check the bore for accidental damage (See Figure 4-2). Smooth as required. Occasionally the drill pipe will rotate against the bore and cause excessive wear. Measure the maximum bore diameter and estimate the maximum wear on any side. If any radius is more than 1/8" (3.18 mm) oversize, send the BOP to a NOV repair facility for a complete rework.

Figure 4-2. LXT Bore Cavity

11. Check the door sealing area on the BOP body for pits and scratches. Remove pits and scratches with emery cloth. 12. Close door assemblies and install lock rods and retaining caps. 13. Inspect the ram shafts as follows: a. Apply reduced closing hydraulic pressure to fully extend both ram shafts for inspection. b.

Reduce closing hydraulic pressure to 0 psi (0 bar).

c.

Open the doors. (See the section titled "Opening Doors" on page 3-12.)

d. Visually check the Outside Diameter of each ram shaft for pits and scratches. The ram shafts should be replaced by a NOV service representative if pits or scratches are visible. e. Visually check the end of each ram shaft for cracks in the neck between the end and the shaft. The ram shafts should be replaced by a NOV service representative if cracks are visible. f.

Close the door assembly, install lock rods and retaining caps.

g. Apply reduced opening pressure to retract rams. 14. Inspect the tail rod end of the ram shaft. a. Apply opening hydraulic pressure to extend the ram shaft. b.

If a tail rod is bent or cracked, the ram shaft should be replaced. If replacement is necessary, call a NOV service representative.

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Maintenance

15. Inspect the locking shaft. a. Apply closing pressure. b.

Screw in clockwise.

c.

Back out counter clockwise.

d. Check for freedom of movement. 16. Inspect the door sealing surfaces. a. Open Doors (See the section titled "Opening Doors" on page 3-12. b.

Remove the door seals (see Figure 4-3).

ii Anytime door assembly is open, bleed pressure to 0 psi (0 bar).

Figure 4-3. Remove Door Seal

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Maintenance

c.

4

Inspect the door seal area. Smooth minor pits with emery cloth.

Figure 4-4. Inspecting Door Seal Area

d. Clean and oil the door sealing surface on the body with SAE 10W oil. e. Oil the door seal seat and face with SAE 10W oil. f.

Clean QDs in door and body.

g. Replace the door seals (see Figure 4-5) if extruded, brittle, cut, or nicked. (See the section titled "Door Seal Replacement" on page 4-16 and the section titled "Troubleshooting" on page 4-15.)

Figure 4-5. Replacing Door Seal

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Maintenance

17. Reinstall the rams (see the section titled "Installation of Rams" on page 4-22). 18. Close doors. 19. Clean and grease support bars. 20. Clean and grease lockbar grooves on door and body. 21. Run a final field wellbore pressure test (see the section titled "Field Wellbore Pressure Test" on page 4-9) before the BOP is returned to service.

Yearly Preventive Maintenance Yearly maintenance is performed by a NOV service representative. The purpose of the yearly maintenance operation is to evaluate wear in the BOP so that a major overhaul (three-year maintenance) can be scheduled at a convenient time, but before a failure occurs. The yearly maintenance includes: R

Wellbore pressure test

R

Hydraulic pressure test

R

Inspection and measurement of cavity for wear and damage

R

A complete review of BOP performance to determine if the BOP should be sent to a NOV repair facility for a major overhaul.

Three-Year to Five-Year Maintenance Three-five year maintenance is performed in a NOV repair facility after a yearly maintenance check determines it is necessary. The BOP is completely disassembled, cleaned, and inspected. All elastomer seals are replaced and all parts are repaired or replaced as required. Hydraulic and wellbore pressure tests are run and the BOP is returned to service.

ii All elastomer seals should be replaced during the threefive year inspection regardless of condition.

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4

Maintenance

Pressure Testing Field Wellbore Pressure Test The final details of the test sequence will be established by the operator and contractor; therefore, modifications to this procedure may be required. See API Spec. 16A and API RP53, paragraph 7.A.2 for additional information.

Equipment Required Connect the listed equipment as shown in Figure 4-6: R

Two pressure gauges

R

Four valves

R

A test pump

Gauge 1

Gauge 2

Valve 2 Valve 1A Valve 1B Bleeder Valve

TEST PUMP

BOP

Figure 4-6. Recommended Field Wellbore Pressure Test Equipment Set-up

Test Locations The BOP can be tested in any of the following locations: R

In a wellhead mounted stack

R

On a test stump

R

On a blind flange

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Maintenance

Test Pressure The test pressure should not exceed the lowest rated working pressure of any component or connection pressurized during the test. This includes one or more of the following: R

BOP(s)

R

Wellhead

R

Casing string, if it will be pressurized during the test or if a leak in the test tool could cause it to be pressurized

R

All connections

Test Fluids The recommended wellbore pressure test fluid is cold water, but drilling fluid may be used. 1. Fill the BOP with water or drilling fluid. 2. Close the pipe rams on an appropriate test tool using 1,500 psi (103 bar) hydraulic pressure (3,000 psi or 207 bar is optional).

Pressure Test 1. Close valves #1A and #1B & bleeder valve. Open valve #2 (see Figure 4-6 on page 4-9). 2. Apply 200-300 psi (14-21 bar) wellbore pressure below the rams. Close valve #2. Hold test pressure for a minimum of 3 minutes. Check for low-pressure leaks. Monitor gauge #1. 3. Open valve #2. Increase the wellbore pressure to the test pressure determined in "Test Pressure”. 4. Close valve #2. 5. Hold the pressure for a minimum of 3 minutes. 6. Check for leaks on pressure gauge #1, the BOP exterior at the API connections, the door seals, the ram shaft weep holes, and at the rams if they are visible (see Figure 4-1 on page 4-4).

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Do not look into the ram bore while pressure is under the rams. Use a mirror to obtain a reflected image of the rams.

7. Close valve #2 (optional) open valve #1A & valve #1B with bleeder valve. Bleed wellbore test pressure to 0 psi (0 bar). 8. Repeat steps 1-7 for the second pressure holding period of 15 minutes. 9. If leaks are detected, see the table titled "Troubleshooting-LXT Manual Lock BOP" on page 4-15.

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Maintenance

4

Leak Repair To repair leaks, perform the following: 1. Reduce all hydraulic pressure and wellbore pressure to 0 psi (0 bar). 2. API connection—tighten bolts or replace ring gasket as required (see step 3 of the section titled "Installation Instructions" on page 3-3). 3. Door Seal—replace door seal (see the section titled "Door Seal Replacement" on page 4-16). 4. Ram Shaft Weep Hole—call a NOV service representative. For an emergency repair, see the section titled "Emergency Ram Shaft Packing Repair" on page 4-17. As soon as possible after the emergency, call a NOV service representative to replace the ram shaft packing. 5. Ram—replace the ram rubbers (see the section titled "Changing Pipe and Blind Ram Rubbers" on page 4-24).

Hydraulic Pressure Test The final details of the test sequence will be established by the operator and contractor; therefore, modifications to this procedure may be required. See API Spec. 16A and API RP53, paragraph 7.A.2 for additional information.

ii If the hydraulic system was opened before this test, close and open the rams three times to purge air from the system.

Pipe rams should always be closed on pipe to avoid excessive ram rubber wear. Closure on a tool joint will damage the block. Blind rams should only be closed on an open hole. Closing on pipe will damage the rubber and possibly the block.

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Maintenance

Opening Hydraulic Pressure Test The opening hydraulic pressure test is performed according to the steps listed below: 1. Vent hydraulic closing pressure to zero psi (zero bar). 2. Apply 1,500 psi (103 bar) or 3,000 psi (55 bar), optional opening pressure. 3. Close the valve in the opening hydraulic line (see Figure 4-7).

Closing Hydraulic Line

Gauge Valve

Opening Hydraulic Line Figure 4-7. Recommended Hydraulic Line Hookup

4. Observe the gauge between the valve and the BOP. 5. If there is no pressure drop, end the test. 6. If there is a pressure drop, perform the steps listed below: a. Check for external leaks at the following locations (see Figure 4-8 on page 413): R

Weep holes for ram shaft seal leaks—if leaking call a NOV service representative

R

Cylinder seal leaks—if leaking call a NOV service representative

R

Door seal leaks—if leaking see the section titled "Door Seal Replacement" on page 4-16.

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4

Maintenance

API Connections Cylinder Head O-Rings

Ram Shaft Weep Holes (1 per Cyl.)

Tail Rod Seal Assemblies

Door Seals

Manifold Seals

Hydraulic Connections All Hydraulic Path Plugs

Figure 4-8. Possible External Leaks

b.

Check for internal leaks past the pistons in the following manner:

R

Disconnect the closing hydraulic line. A small amount of fluid will flow out of the BOP initially and stop. If fluid continues to flow out of the BOP, it is leaking past the piston and repairs are required.

R

Reinstall the closing hydraulic line.

R

Call a NOV service representative to repair the leak.

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Maintenance

Closing Hydraulic Pressure Test The closing hydraulic pressure test is performed according to the steps listed below: 1. Vent hydraulic opening pressure to zero psi (zero bar). 2. Apply 1,500 psi (103 bar) or (optional) 3,000 psi (207 bar) closing pressure. 3. Close the valve on the closing hydraulic line (see Figure 4-10). Figure 4-9.

Gauge Valve

Closing Hydraulic Line

Opening Hydraulic Line Figure 4-10. Ram Hydraulic Test Hook-up

4. Observe the gauge between the valve and the BOP. 5. If there is no pressure drop, end the test. 6. If there is a pressure drop, perform the steps listed below: a. Check for external leaks at the following locations (see Figure 4-1 on page 4-4):

b.

R

Cylinder head seals-if leaking, call a NOV service representative

R

Locking shaft seals-if leaking, call a NOV service representative

R

Manifold pipe seals-if leaking, call a NOV service representative

Check for internal leaks past the pistons in the following manner: R

Disconnect the opening hydraulic line. A small amount of fluid will flow out of the BOP initially and stop. If fluid continues to flow out of the BOP, it is leaking past the piston and repairs are required.

R

Reinstall the opening hydraulic line.

R

Call a NOV service representative to repair the leak.

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Maintenance

4

Troubleshooting For a list of common problems likely to be encountered during operation, including possible causes and corrective action, see "Troubleshooting-LXT Manual Lock BOP" table below: Troubleshooting-LXT Manual Lock BOP Problem

Possible Cause

Correction

Will not hold well pressure

BOP is upside-down.

When BOP is right side up, the side outlets are below the skids. Inside the BOP, the side outlets are below the rams (see the section titled "Installation Instructions" on page 3-3).

Bad ram rubbers

Check ram rubbers and replace if necessary (see the section titled "Ram Assembly Removal and Inspection" on page 4-19.

Damaged seat

Check seat sealing area for cuts and sealing surface scratches. Smooth minor damage with emery cloth (see the section titled "Three-Month Preventive Maintenance" on page 4-4).

Leaking ram shaft seal

Check the weep holes in the doors for leakage. Replace the ram shaft seal if necessary. A temporary repair can be made by energizing the plastic packing, but the seal should be replaced as soon as possible (see the section titled "Emergency Ram Shaft Packing Repair" on page 4-17, Figure 4-1 on page 4-4).

Leaking door seal

Check for leaks between the doors and the body. Replace the door seals as required (see the section titled "Monthly Preventive Maintenance" on page 4-3 and the section titled "Door Seal Replacement" on page 4-16).

Pump leaking in the test unit

Install isolation valve in the pump line close to the BOP. Install a pressure gauge between the isolation valve and the BOP. No indication of pressure drop indicates a leak in the test unit.

Hydraulic fluid not reaching the BOP

Remove the closing line from BOP and pump a small amount of hydraulic fluid through it. If no fluid appears, the line is plugged. Clear the closing line.

Opening hydraulic line plugged or piston seal damaged

Remove opening line from the BOP and apply closing hydraulic pressure. 1. If hydraulic fluid spurts out of BOP briefly and stops and rams close, the opening hydraulic line is plugged. Call a NOV service representative. 2. If hydraulic fluid spurts out of BOP continuously, the piston seal is damaged. The rams would also move, but there would be no pressure buildup. Call a NOV service representative.

Foreign substance in the wellbore area

Open the door(s) and inspect for cement, metal fragments, etc. Clean the ram cavity.

Lock bars are hard to remove

Corrosion or material build up

Thoroughly clean bars and grooves then re-lubricate. A new application of Perma-Silk G (solid film lubricant) maybe needed.

One (or both) rams will open partly, but will not move out of the wellbore

Manual lock(s) rams partly locked

Unlock rams. Check for damage to the locking shafts, threads, or bent shaft (see the section titled "Three-Month Preventive Maintenance" on page 4-4).

Rams will not close

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Maintenance

Troubleshooting-LXT Manual Lock BOP (Continued) Problem

Possible Cause

Correction

Door assemblies are hard to slide

Bent or dirty slide rods

Check the straightness of the rods. Replace if necessary. Clean and lubricate.

Worn DU Bearings

Replace the door DU bearings for the slide rods. See the table titled "BOP and Door Components" on page 5-4.

Corrective Maintenance Door Seal Replacement The door seal is replaced by performing the steps listed below: 1. Disconnect the universal joints from the locking shafts. 2. Open the doors (see the section titled "Ram Assembly Removal and Inspection" on page 4-19). 3. Remove the door seal from its seat (see Figure 4-11).

Figure 4-11. Replacing the Door Seal

4. Clean the door seal seat and face. 5. Inspect the door seal seat for damage. Remove minor pits and scratches with emery cloth. If the seat is badly damaged, call a NOV service representative. 6. Clean and oil the door sealing surface on the body with SAE 10W oil. 7. Oil the door seal seat and face with SAE 10W oil.

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Maintenance

4

8. Install a new door seal.

Do not substitute an O-ring for the door seal. Use correct NOV replacement parts only. Failure to heed this caution may result in malfunction of the BOP.

9. Close the door.

Emergency Ram Shaft Packing Repair An emergency repair can be made by reducing the hydraulic pressure to 0 psi (0 bar) and activating the secondary ram shaft seal on the BOP (see Figure 4-12 on page 4-18). As soon as possible after the emergency, call a NOV service representative to repack the ram shaft. 1. Remove the pipe plug from the port on the door.

ii On the LXT, the secondary seal port is located between the lock bar gooves on the side of the door.

2. With the pipe plug removed, a second socket head screw plug is exposed. Tighten this clockwise to inject the secondary ram shaft seal.

ii Additional packing may be injected until the leak stops. Remove the packing plug, add packing and re-tighten the packing plug.

3. Replace the socket head pipe plug removed in step 1. 4. Call a NOV service representative to repack the ram shaft.

Wa r n

in g

It is imperative to replace ram shaft seal assemblies as soon as possible. Continued use with emergency packing can damage BOP components.

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Maintenance

Port Plug (P/N 066504)

Packing Plug (P/N 207077)

Check Valve (P/N 20023094)

Secondary Packing (P/N 050000)

Ram Shaft Seal Assembly (P/N 185174)

Secondary Seal Port Location

Weep Hole

Door

Figure 4-12. LXT Secondary Seal Assembly

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Maintenance

4

Ram Assembly Removal and Inspection Procedures for removal and installation of pipe, blind and shear rams in the LXT BOP are the same.

Removal of Rams Remove the rams according to the steps listed below:

Wa r n

in g

Support rods must be installed with end caps before starting this operation.

1. Open the rams with 1,500 psi hydraulic pressure. 2. Bleed hydraulic pressure to 0 psi (0 bar) so that the door will open easily and to prevent possible damage. (See Figure 4-13.)

Figure 4-13. LXT Ram BOP

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Maintenance

3. Remove two of the retaining caps on both bars. Remove the two door lock bars. (See Figure 4-14 and Figure 4-15.) Store lock bars in safe area.

ii If the bar cannot be removed by hand. The supplied ‘slide hammer’ can be used (see Figure 3-9 on page 3-14).

Figure 4-14. Pulling the Lower Lock Bar

Figure 4-15. Pulling the Upper Lock Bar

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Maintenance

4

4. By hand, pull the door assembly back along the support bars until it stops. See Figure 4-16.

If the BOP is not flanged to a wellhead or securely fastened, open only one door at a time. The weight of two open doors may tip the BOP over.

Figure 4-16. Pull Door Assembly Open

5. Slide ram out and lift. See Figure 4-17 and Figure 4-18 on page 4-22.

Figure 4-17. Slide The Ram Assembly Out

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Maintenance

LXT Ram Blowout Preventer Revision D Page 4-22 of 28

Figure 4-18. Removing/Installing The Ram Assembly

Cleaning and Inspection of Rams 1. Clean the rams. 2. Inspect the ram rubbers for damage such as cracking, gouging, chunking, or splitting. Replace the rubbers if damaged (see the section titled "Changing Pipe and Blind Ram Rubbers" on page 4-24).

Installation of Rams 1. Thoroughly grease all ram exterior surfaces and the ram shaft-mounting slot. 2. Grease the inside of the BOP body at the following locations: R

Ram shaft foot.

R

Side pads in the body cavity.

R

Skids in the bottom of the body cavity.

R

Ram sealing seat in the top of the body cavity.

3. Clean and oil the door face with SAE 10W oil; replace the door seal if damaged (see the section titled "Door Seal Replacement" on page 4-16). 4. Clean and oil the door sealing surface on the body with SAE 10W oil.

Do not use grease on door faces or sealing surfaces.

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Maintenance

4

5. Lift the ram assembly into position, then slide the assembly horizontally onto the ram shaft foot (see Figure 4-18 on page 4-22).

ii Grease the support rods before and after opening and closing the door assembly. Clean and grease all the lock bars and grooves before closing the doors.

6. Manually close the door of the preventer and replace the lock bars and retaining caps. See Figure 4-19.

Figure 4-19. Closing the Door Assembly

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LXT Ram Blowout Preventer Revision D Page 4-24 of 28

Maintenance

Changing Pipe and Blind Ram Rubbers New One-piece Design 1. Clean the ram. 2. Insert a screwdriver or small pry bar under the end of the top seal and pry up and out of the ram block. (See Figure 4-20.)

Pry up on each end to remove from face seal and ram block. Figure 4-20. Remove Top Seal and Face Seal

3. Remove the top seal until the pins are out of the face seal. 4. Remove the face seal. 5. Clean and lubricate the seal areas of the ram block with SAE 10W oil. 6. Install the new face seal. 7. Install the new top seal. Align the seal pins with the holes in the face seal. Tap the new seal into the block seal area.

Offset Rams for Dual Completions Single offset rams have only one bore, which is offset to API centerline standards. This allows complete control of a dual completion when the second tubing string is to be run later. Dual offset rams are furnished to API centerline standards for complete control of a dual completion when both tubing strings are run together. Contact your local Shaffer sales representative for delivery dates. Be sure to specify the following when ordering: R

BOP size and working pressure.

R

If single or dual offset rams are required.

R

Tubing OD and type of coupling so the coupling OD can be determined.

R

Casing size and weight so that the casing ID can be determined.

R

Tubing hanger centerline dimensions.

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4

Maintenance

Aluminum Drill Pipe Rams Since aluminum drill pipe has an oversize OD, these rams must have oversize bores in both the ram blocks and in the ram rubber extrusion plates. Contact your local NOV sales representative for part numbers and the following: R

BOP size and working pressure.

R

Aluminum drill pipe OD.

Storing the LXT BOP LXT BOP Data Location For the location of BOP data, see Figure 4-21 on page 4-26. R

Operation information is contained on plates mounted on the cylinder heads.

R

The body part number is located on the body.

R

Most components of the LXT BOP are stamped with their part numbers and other manufacturing data.

ii Always give the serial number or assembly part numbers and size of the LXT BOP when ordering parts.

Cleaning and Storage of the LXT BOP A BOP should be cleaned immediately after it is taken out of service. Proper cleaning of a BOP before it is stored will increase its life significantly. If a BOP is in an active drilling program, this cleaning should be done approximately every three months or when the rig is between wells see the table titled "LXT Ram BOP Cleaning and Lubricating Instructions" on page 4-27. 1. Open the doors and remove the rams (see the section titled "Removal of Rams" on page 4-19).

If the BOP is not flanged to a wellhead or securely fastened, open only one door at a time. The weight of two open doors may tip the BOP over.

R

Store rubber parts in their natural shape. Do not hang o-rings on nails or hooks.

R

Storage areas should be kept as dry as possible. Oil, grease or other fluids should be stored elsewhere to avoid spillage.

R

If storage is for a long duration, it is recommended that rubber parts be placed in sealed containers or be given a protective surface covering impervious to temperature or light, This will extend the shelf life.

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Maintenance

R

Rubber parts should be used on a first in, first out basis.

2. Inspect rubber parts according to the instructions listed below: R

Each rubber part must be inspected before it is put into service.

R

Bend, stretch, or compress each part and look for cracks.

R

Observe if the rubber part has a hard skin or small cracks which may become chalky or bark like in appearance.

ii Some cracks are not obvious, but when the rubber part is bent, stretched or compressed, very minute cracks will become apparent.

BLOWOUT PREVENTER IN BORE SIZE WKG. PRESS. PSI HYD. OPER. SYSTEM PRESS: RATED WKG. PSI RECMD. OPER. PSI TOP CONN. TOP RG. GSKT. BTM. CONN. BTM. RG. GSKT. OTLT. SIZE OTLT. RG. GSKT. TRIM/TEMP. CLASS SERIAL NO. API PDC ASSY. WT. DATE OF MFR.

ATTENTION FOR CORRECT DOOR CLOSURE SLIDE DOOR COMPLETELY CLOSED, PULL DOWN SLIGHTLY ON CYLINDER HEAD TO ALLOW EASE OF INSTALLING LOWER LOCK BAR FIRST THEN LIFT SLIGHTLY ON CYLINDER HEAD TO INSTALL UPPER LOCK BAR

ASSY. NO. 132894

20020617

i Most components of the LXT have their part numbers stamped on them.

Figure 4-21. Data Information

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Maintenance

4

LXT Ram BOP Cleaning and Lubricating Instructions Part

How to Clean

Lubricants

Steam or high pressure water

1. LXT exterior

WARNING Diesel fuel is a Flammable liquid. It will cause rubber goods to swell and deteriorate.

N/A

2. LXT interior

Steam, high pressure water

SAE-10W hydraulic oil or equivalent.

3. Studs/nuts

Water, wire brush

Grease specified in API 5A2. Moly Paste 503 (P/N 7403582)

4. Ring groove*

Emery Cloth

(Grease if not immediately in service).

5. Ram assembly

Steam, high pressure water (See Warning)

Grease

6. Lifting eye threads

Water, wire brush

Pack heavy grease to prevent corrosion.

7. Seat sealing surfaces

Emery cloth

SAE-10W oil or equivalent.

8. Bore

Steam, high pressure water

Grease

9. Skids and side pads

Steam, high pressure water, emery cloth

Grease

10. Sealing areas (door face, door sealing surface)

Emery Cloth

SAE-10W oil or equivalent.

11. Seals

Wipe with damp cloth

SAE-10W oil or equivalent.

12. Door seal grooves

Emery cloth

SAE-10W oil or equivalent.

13. Door slide rod

Steam, high pressure water

Grease

14. Lock bars and grooves

Steam, high pressure water

Grease, SAE-10W oil or equivalent. See Note.

* Do not use a wire brush to clean the ring groove. Install new ring gaskets dry. NOTE: The lock bars and grooves may require a field application of the solid film lubricant PermaSilk® G. This lubricant is an air drying, MoS2 based solid film lubricant with an epoxy binder system. The coating provides a low coefficient of friction with good corrosion resistance and is ideal for higher load carrying applications. (Technical data available on request)

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Maintenance

LXT Ram Blowout Preventer Revision D Page 4-28 of 28

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LXT Ram Blowout Preventer Revision D Page 5-1 of 18

Specifications and Parts Lists Customer Service Direct all correspondence to one of the addresses provided below:

Mailing Address National Oilwell Varco (NOV) P.O. Box 1473 Houston, Texas 77251, U.S.A.

Shipping Address 12950 West Little York Houston, Texas 77041 Phone: (713) 937-5000 Fax: (713) 937-5779

Repair Center 5100 N. Sam Houston Parkway West Houston, Texas 77086 Phone: (281) 569-3000

Parts Lists Parts Identification All parts required for maintenance or repair are available from NOV. Figures correspond to the parts list, which identifies each part by number. Using this part number and part name will ensure procurement of the proper part when ordering parts.

Ordering Replacement Parts When ordering replacement parts, please specify the following information: R

Part name – list part name as called out on the applicable drawing

R

Part number – list part number as called out on the applicable drawing

R

Quantity – list the quantity needed

R

Serial number – list the serial number (if applicable) as shown on the nameplate

Recommended Spare Parts The the table titled "Model LXT Manual Lock Spare Parts Kit (P/N 20024693)" on page 511 provides recommended spare parts coverage for the LXT preventer.

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Specifications and Parts Lists

LXT Ram Blowout Preventer Revision D Page 5-2 of 18

Exploded Views and Parts Lists Figure 5-1 on page 5-3 shows a cutaway view of the LXT Manual-Lock Door. The parts list is contained in the table titled "BOP and Door Components" on page 5-4 lists the parts.

BOP Characteristics WELLBORE CHARACTERISTICS Working Pressure

5,000 psi (3,000 psi optional. See note below)

Max. Ram Size

5-1/2”

OPERATOR CHARACTERISTICS Working Pressure

1500 psi (3,000 psi max.)

Volume to Open

0.32 Gallons per cylinder

Volume to Close

0.39 Gallons per cylinder

Closing Ratio

8.45:1

Piston Stroke

4.19 inches

Ram Shaft

1-5/8” Diam.

ESTIMATED WEIGHTS Single, S X S, 2” flg outlets with rams

1,360 lbs.

Single, S X F, 2” flg outlets with rams

1,460 lbs.

Double, S x S, with rams

2,420 lbs.

Ram Assembly

30 to 42 lbs. per set

ii NOV manufactures 5,000 psi 7 1/16" LXT blowout preventers and 3,000 psi working pressure 7 1/16" LXT blowout preventers. Both preventers are identical in operation. The difference between the two preventers is the API end connections, which limit the working pressure of the preventer to 3,000 psi.

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LXT Ram Blowout Preventer Revision D Page 5-3 of 18

Specifications and Parts Lists

5

O-Ring Plug (x2) Q/D Nipple (x2)

O-Ring (x4)

Manifold

Pipe Plug

Screw /Washer (x2)

w

Stud Cylinder Head Ram Shaft Seal Assembly Locking Shaft

Piston Shaft Piston Shaft Seal Nut w/Washer

Door Seal

Cylinder O-Ring /Backup (x2)

w

Piston Seal

Door

Figure 5-1. LXT Door Assembly Components

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Specifications and Parts Lists

LXT Ram Blowout Preventer Revision D Page 5-4 of 18

BOP and Door Components Item No.

P/N

Description

Qty

DOOR, 7-5M LXT, W/ PLASTIC INJECTION

1

1

—

2

20022087

CYL, 7-5M LXT

1

3

20022086

SHAFT, PSTN, 7-5M LXT

1

4

20022088

SHAFT, LKG, 7-5M, LXT

1

5

20022653

MNFD, 7-5M LXT

1

6

20022084

CYL, HD, FM, 7-5M LXT

1

7

20022103

SEAL, DOOR, 7-5M, LXT

1

8

1500390

NIPPLE, Q/D, 3/8”, CHECK VLV TYPE, SAE MALE

2

9

5019416

O-RING

2

10

030928

O-RING, SPG

2

11

032008

RG, BACKUP

2

12

20022403

SEAL, POLYPAK, 2-1/16” OD X 1-11/16” ID”, .375 DEEP

1

13

032006

SEAL, PSTN, 4-5/8”ID X 5”OD X 3/16”CS

1

14

185174

RSSA, 1-5/8” SHAFT

1

15

030653

O-RING

4

16

20022704

DU BRG #16DU24

2

17

020009

NUT, HX, HVY, 7/8"- 9UNC, A194Gr2H, BLK FINISH

4

18

20022090

STUD, 7-5 LXT

4

19

065008

PLUG, SKT HD, HX, 1/4" NPT

1

20

20020275

PLUG, PIPE, SKT HD, 1/4"- 18NPT x 1/16" DIA

1

21

066502

PLUG, SKT HD, HX, 1/2" NPT, ALLOY STL, CAD PLTD

2

22

8010201

SCREW, HHC, 1/2"- 13UNC x 3/4" LG, SS

2

NS

20025967

PLUG, PIPE, SKT HD,1/4"-18NPT x 1/32”DIA

1

23

20001174

WSHR, FL, 1/2", 316 SS

2

24

025046

WSHR,LK, SPLIT, 7/8"DIA, CAD PLTD, CARBON STL

4

25

1500389

CPLR, Q/D, 3/8”, CHECK VLV TYPE, SAE FEMALE

2

26

20022085

BAR, SLIDER

2

27

20022650

CAP END, SLIDER BAR

2

28

8002856

SCREW, SHC, 3/8” UNC X 3/4” LG

2

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Specifications and Parts Lists

5

29

20022089

LOCK, BAR

2

30

20021470

KNOB, HAND

4

31

066504

PLUG, PORT

1

31A

2007077

PLUG, PACKING

32

050000

PKG, STICK, INJECTION, PLASTIC

1

33

20023094

VLV ASSY, CHECK, 3/4-10 UNC-2A

1

NS

8130121

SCREW, DRV, #6 x 1/4” LG, .120” HOLE SIZE, SS, RD HD

4

NS

185181

HANDLE, F/7-5M MANUALLY OPERATED BOP

1

NS

20020261

HAMMER, SLIDE, 24” LG X 5/8” - 1/8” THREAD END

1

NS

050193

RG GSKT, R-24, CAD PLTD, OVAL

4

NS

050202

RG GSKT, R-46, CAD PLTD, OVAL

2

NS

064036

PROTECTOR, FLG, STDD, 2-5M

4

NS

064078

PROTECTOR, STDD, 7-5M (PLASTIC)

2

NS

20024128

BORE AND GROOVE PROTECTOR

2

Note: Quantity shown is for one (1) set of door components.

See foldout.

Figure 5-2. LXT BOP and Door Components

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LXT Ram BOP Revision D

Specifications and Parts Lists

25

26 23 27

22

7 14

8 1

21 20

5 15

9

BOP Body

13 28

11 10

16

29

32 31 33

30 19

2

4

12

11 10

6 18 24 17

Figure 5-2. LXT BOP and Door Components

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3

5

5

LXT Ram Blowout Preventer Revision D Page 5-6 of 18

Specifications and Parts Lists

Model LXT Ram Shaft Seal Assemblies Item No.

Description

Qty.

Part Number

—

Ram Shaft

—

1-5/8”

—

Assembly Number

—

185174

1

Retainer, Ring

1

141365

2

Holder, Ring, Wiper

1

185172

3

Scraper, Ring

1

032005

4

Seal, Polypak

1

032004

5

Adapter, Packing

1

185173

6

Seal, Polypak, Deep

1

032009

* Quantity shown is for 1 assembly. Note that a single model requires 2 assemblies, a double model requires 4 assemblies. Increase quantities as required.

OPERATOR

6 Plastic Injection Hole

5

4 3 2 1

BOP BODY Figure 5-3. LXT Ram Shaft Seal Assembly

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Specifications and Parts Lists

5

Model LXT Cylinder Head/Piston Shaft Seal Assembly Item No.

Description

Qty.

Part Number

3

Piston Shaft

—

1-5/8”

12

Cylinder Head/Piston Shaft Seal

1

20022403

* Quantity shown is for 1 assembly. Note that a single model requires 2 assemblies, a double model requires 4 assemblies. Increase quantities as required.

Cylinder Head

Piston Shaft Seal

Piston Shaft

Figure 5-4. LXT Piston Shaft Seal Assembly

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LXT Ram Blowout Preventer Revision D Page 5-8 of 18

Specifications and Parts Lists

Rams for Model LXT Blowout Preventers BOP Working Pressure

3,000/5,000 psi LXT

Ram (Type or Model) Bore

7"

Assembly

Current Components

Regular Duty

Support Drill Type

Rubber

Block

LXT

LXT

LXT

LXT

Top Seal

Ram Block

Face Seal

Figure 5-5. LXT Pipe Ram Assembly

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LXT Ram Blowout Preventer Revision D Page 5-9 of 18

5

Specifications and Parts Lists

3,000/5,000 psi 7-1/16 LXT Pipe Ram Assembly * Pipe OD

Complete Assembly

Ram Block

Face Seal Assembly

Top Seal Assembly

7 1/16", 3,000/5,000 psi, (180 mm) CSO

722224

722156

722183

722181

11/4", 32 mm

722259

722285

722286

722181

1.315", 33 mm

722225

722157

722184

722181

1.660", 42 mm

722226

722158

722185

722181

1.900", 48 mm

722227

722159

722186

722181

2 1/16", 52 mm

722228

722160

722187

722181

2 3/8", 60 mm

722229

722161

722188

722181

2 7/8", 73 mm

722230

722162

722189

722181

3 1/2", 89 mm

722231

722163

722190

722181

4", 102 mm

722232

722164

722191

722181

4 1/2", 114 mm

722233

722165

722192

722181

5", 127 mm

722234

722166

722193

722181

5 1/2", 140 mm

722235

722167

722194

722181

* 3,000/5,000 LXT BOP uses Chasovoy™ Ram assemblies.

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LXT Ram Blowout Preventer Revision D Page 5-10 of 18

Specifications and Parts Lists

Face Seal

Top Seal A

Block

A

Section A-A

Figure 5-6. LXT Multi-Ram Assembly (One Piece Design)

LXT Multi-Ram Assemblies

Pipe Range (inches)

Complete Assembly

Rubber Assembly

Block

Face Seal

Top Seal

2-3/8 to 3-1/2

20002933

20002936

20002934

20002937

722181

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5

Specifications and Parts Lists

Model LXT Manual Lock Spare Parts Kit (P/N 20024693)

P/N

Description

Qty

185174

RSSA, 1-5/8” SHAFT

2

030653

O-RING, 70-75 DURO

8

032008

RG, BACKUP

4

5019416

O-RING, 70 DURO

8

20022403

SEAL, POLYPAK, 2-1/16” OD X 1-11/16” ID, .375” DEEP

2

050000

PKG, STICK, INJECTION, PLASTIC

2

032006

SEAL, PSTN, 4-5/8”ID X 5”OD X 3/16”CS

2

030928

SPRING O-RING

4

20022103

DOOR SEAL

2

LXT Door Fastener (Hardware) Kit (P/N 20025183) P/N

Description

Qty

020009

NUT, HX, HVY, 7/8"- 9UNC, A194Gr2H, BLK FINISH

4

20022090

STUD, 7-5 LXT

4

065008

PLUG, SKT HD, HX, 1/4" NPT

1

20020275

PLUG, PIPE, SKT HD, 1/4"- 18NPT x 1/16" DIA

1

066502

PLUG, SKT HD, HX, 1/2" NPT, ALLOY STL, CAD PLTD

2

8010201

SCREW, HHC, 1/2"- 13UNC x 3/4" LG, SS

2

207077

SCREW, SET, SKT HD, 3/4”-10UNC

1

20001174

WSHR, FL, 1/2", 316 SS

2

025046

WSHR,LK, SPLIT, 7/8"DIA, CAD PLTD, CARBON STL

4

066504

PLUG, SKY HD, HX, 3/4” NPT

1

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LXT Ram Blowout Preventer Revision D Page 5-12 of 18

Specifications and Parts Lists

Handwheel Assembly (Optional)

2 6

1

7

3

6

1

5

4 8

Figure 5-7. Handwheel Assembly

LXT Handwheel Assembly (P/N 185599) Item Number

Part Number

Description

Qty

1

722151

HANDWHEEL

1

2

185630

UNIVERSAL JOINT

1

3

185631

SPACER SLEEVE

1

4

185634

DEEP SOCKET WRENCH

1

5

051330

RETAINER RING

1

6

8001458

HEX HEAD CAP SCREW

2

7

8020187

HEX NUT

2

8

8001352

HEX HEAD CAP SCREW

1

5-12 www.nov.com

LXT Ram Blowout Preventer Revision D Page 5-13 of 18

Specifications and Parts Lists

5

API Nuts Normal Temperatures Heavy Hex Nuts

Black A194, Gr 2H

Cad. Plated A194, Gr 2H

Low Temperatures A194 Gr 4 or 7

1

020018

020300

020301

020019

020304

020305

/4" - 20 UNC

5/ " 16

- 18 UNC

3

/8" - 16 UNC

020020

020308

020309

1

/4" - 14 UNC

020021

020312

020313

020006

020316

020317

020007

202320

020321

1/ " 2

- 13 UNC

9/ " 16

- 12 UNC

5/ " 8

- 11 UNC

020008

020324

020325

3/ " 4

- 10 UNC

020004

020328

020329

7/ " 8

- 9 UNC

020009

020333

020334

1" - 8 UNC

020001

020338

020339

1 1/8" - 8 UN

020003

020343

020344

1 1/4" - 8 UN

020010

020347

020348

1 3/8" - 8 UN

020011

020351

020352

1 1/2" - 8 UN

020000

020356

020357

1 5/8" - 8 UN

020012

020361

020362

1 3/4" - 8 UN

020013

020366

020367

1 7/8" - 8 UN

020014

020371

020372

2" - 8 UN

020015

020376

020377

2 1/4" - 8 UN

020016

020381

020382

2 1/2" - 8 UN

020017

020386

020387

2 3/4" - 8 UN

020034

020391

020392

3" - 8 UN

020035

020396

020397

5-13 www.nov.com

5

LXT Ram Blowout Preventer Revision D Page 5-14 of 18

Specifications and Parts Lists

Tap End Studs for API Flanges Normal Temperature Tap End Studs 1

/2" x 2 3/4"

Black A193, B7

Low Temperature Cad. Plated A193, B7

A320, L7

011000

012050

012051

x 3 1/2"

011001

012055

012056

3

/4" x 3 3/4"

011002

012060

012061

3

/4" x 4"

011003

012065

012066

7

/8" x 4"

011004

012070

012071

011005

012075

012076

011006

012080

012081

1" x 4" 1" x 4 3/4" 1" x 5"

011037

—

—

011007

012085

012086

011008

012090

012091

1 1/8" x 5 1/4"

011009

012095

012096

011010

012100

012101

011011

012105

012106

x 7"

011036

012110

012111

1 1/4" x 6"

5/ " 8

7

/8" 7/ " 8

1 1 1

1

x 4 /4" x4

1/ " 8 1/ " 8 1/ " 8

1/

x5 x5

2"

1/ " 2 3/ " 4

011012

012115

012116

1/ " 4

011013

012120

012121

1 3/8" x 6 1/2"

011014

012125

012126

1 3/8" x 6 3/4"

011015

012130

012131

1/ " 4 1/ " 2

011016

012135

012136

011017

012140

012141

1 1/2" x 7 1/4"

011019

012145

012146

1 1/2" x 7 3/4"

011020

012150

012151

1

1 1

1/ " 4

3/ " 8 3/ " 8

x6

x7 x7

1

1

011021

012155

012156

1

1

1 /2" x 8 /2"

011022

012160

012161

1 5/8" x 8 1/4"

011023

012165

012166

1 5/8" x 8 1/2"

011024

012170

012171

1 /8" x 13 /8"

152150

012175

012176

1 3/4" x 8 1/4"

011034

012180

012181

1 /4" x 9 /2"

011025

012185

012186

1 7/8" x 9 1/2"

011026

012190

012191

1 7/8" x 10 1/4"

011018

012195

012196

4"

011033

012200

012201

4"

011027

012205

012206

1 /2" x 8 /4"

5

3

1 1

7/ " 8 7/ " 8

1

1

x 10

3/

x 11

1/

5-14 www.nov.com

LXT Ram Blowout Preventer Revision D Page 5-15 of 18

5

Specifications and Parts Lists

Tap End Studs for API Flanges (Continued) Normal Temperature Tap End Studs

Black A193, B7

Low Temperature Cad. Plated A193, B7

A320, L7

2" x 10 1/4"

011028

012210

012211

1/ " 4 1 /2"

011035

012215

012216

2" x 11 2" x 12"

011029

012220

012221

011030

012225

012226

2 1/4" x 12 1/4"

012240

012241

012242

2 1/4" x 13 1/4"

012246

012247

012248

011031

012230

012231

011032

012235

012236

2" x 11

1

1

2 /4" x 14 /4" 2 1/4" x 15 1/2"

API Ring Gaskets Flange

R or RX Number

Working Pressure (psi)

Nominal Size and Bore

2,000 3,000/5,000

2 1/16" 2

1/ " 16

R (Oval) Soft Iron Cad. Plated

Type 304 SS

RX Rubber Coated

Soft Iron Cad. Plated

Type 304 SS

23 24

050192 050193

050567 050568

050420 050421

050376 050380

050603 050604

26 27

050194 50195

050569 050570

050422 050423

050381 050382

050606 050607

31 35

050196 050197

050571 050572

050424 050426

050383 050384

050608 050609

37 39

050198 050199

050573 050574

050427 050428

050385 050386

050610 050611

2,000 3,000/5,000

2 9/16"

2,000/3,000 5,000

3 1/8"

2,000/3,000 5,000

4 1/16

2,000/3,000 5,000

7 1/16" 7 1/16"

45 46

050201 050202

050577 050578

050430 050431

050373 050389

050614 050615

2,000/3,000 5,000

9" 9"

49 50

050203 050204

050580 050581

050433 050432

050390 050391

050617 050618

2,000/3,000 5,000

11" 11"

53 54

050205 050206

050582 050583

050435 050436

050377 050392

050619 050620

2,000/3,000 5,000

13 5/8" 14"

57 63

050207 050208

050584 050585

050437 050442

050393 050394

050621 050622

2,000 3,000

16 3/4"

65

050209

050586

050443

050395

050623

66

050210

050587

050444

050396

050624

2

9/ " 16

3 1/8"

4 1/16"

16

3/

4"

5-15 www.nov.com

5

LXT Ram Blowout Preventer Revision D Page 5-16 of 18

Specifications and Parts Lists

API Ring Gaskets (Continued) Flange

R or RX Number

R (Oval) Soft Iron Cad. Plated

Working Pressure (psi)

Nominal Size and Bore

2,000 3,000

17 3/4"

69

050306

050588

050445

—

050625

3

17 /4"

70

050307

050589

050446

—

050626

2,000 3,000

21 1/4"

73

050211

050590

050448

050397

050627

3

74

050156

050591

050449

050398

050628

20 /4"

Type 304 SS

RX Rubber Coated

Soft Iron Cad. Plated

Type 304 SS

API BX Ring Gaskets Flange Working Pressure (psi)

10,000, 15,000, 20,000

Nominal Size

Soft Iron BX Number

Type 304 Cad. Plated

Stainless Steel

1 13/16"

151

050352

050644

1/ " 16 9/ " 16

152

050353

050645

153

050354

050646

3 1/16"

154

050355

050647

1/ " 16 1/ " 16

155

050366

050648

7 9" 11"

156

050356

050649

157

050227

050650

158

050350

050651

13 5/8"

159

050357

050652

13 8"

160

050462

050653

16 3/4"

161*

050536

050654

16 4"

162

050661

050662

18 3/4"

163

050663

050664

3

18 /4"

164

050665

050666

21 1/4"

165

050667

050668

166

050690

050691

2 2

4 10,000, 15,000

10,0005,000

5,0005,000/10,000

5,00010,000

5,00010,000

5/

3/

1/

21 4"

* For obsolete 16 3/4", 5,000 psi WP 7,500 psi test flange.

5-16 www.nov.com

LXT Ram Blowout Preventer Revision D Page 5-17 of 18

Specifications and Parts Lists

5

All Thread Studs and Nuts for API Flanges All Thread Studs With Two Nuts Each

1

/2" x 4 1/2"

Low Temperature

Black A193, B7

A320, L7

Cad. Plated A193, B7

011440

011442

011444

x 4 1/2"

011449

011451

011453

x 5 3/4"

011458

011460

011462

x 6"

011467

011469

011471

/4" x 4"

011476

011478

011480

5/ " 8 5 /8" 5 /8" 3

Normal Temperature

3

1

/4" 3/ " 4 3/ " 4

x 5 /4"

011485

011487

011489

x 6"

011496

011498

011500

x 7"

011505

011507

011509

7/ " 8 7/ " 8 7/ " 8 7/ " 8 7/ " 8

x 4 1/2"

011514

011516

011518

011523

011525

011527

011532

011534

011536

011543

011545

011547

011552

011554

011556

1" x 6" 1" x 6 1/2" 1" x 7" 1" x 7 1/4"

011561

011563

011565

011570

011572

011574

011579

011581

011583

011588

011590

011592

1" x 7 3/4"

011606

011608

011610

011615

011617

011619

—

011991

—

x 7"

011624

011626

011628

x 7 1/2"

011633

011635

011637

011644

011646

011648

x 9"

011655

011657

011659

1 1/4" x 8"

011664

011666

011668

1 1/4" x 8 3/4"

011673

011675

011677

011682

011684

011686

011691

011693

011695

1 3/8" x 9"

011700

011702

011704

1 3/8" x 9 1/2"

011709

011711

011713

1 3/8" x 10 1/4"

011720

011722

011724

x5

1/

2"

x 6" x7

1/

2"

x 8"

1/

1" x 9 4" 1" x 10" 1 1 1 1

1/ " 8 1/ " 8 1/ " 8 1/ " 8

1

x8

1/

4"

1

1 /4" x 9 /4" 1 1/4" x 12"

x 10

3/

4"

011729

011731

011733

x 12

1/

2"

011738

011740

011742

x 13

1/

4"

011747

011749

011751

1 1/2" x 10 1/4"

011756

011758

011760

011765

011767

011769

011776

011778

011780

1 1 1

1 1

3/ " 8 3/ " 8 3/ " 8

1/ " 2 1/ " 2

x 11

1/

x 13"

4"

5-17 www.nov.com

5

LXT Ram Blowout Preventer Revision D Page 5-18 of 18

Specifications and Parts Lists

All Thread Studs and Nuts for API Flanges (Continued) All Thread Studs With Two Nuts Each

Normal Temperature

Low Temperature

Black A193, B7

A320, L7

Cad. Plated A193, B7

1 5/8" x 11"

011787

011789

011791

1 5/8" x 11 3/4"

011796

011798

011800

011805

011807

011809

1 /8" x 12 /2"

011814

011816

011818

1 5/8" x 17"

011825

011827

011829

1 3/4 x 12 1/4"

011836

011838

011840

1 /4 x 14 /4" 1 3/4 x 15"

011845

011847

011849

011856

011858

011860

1 7/8" x 13 3/4"

011867

011869

011871

1 7/8" x 14 1/2"

011876

011878

011880

5

1 /8" x 12" 5

1

3

x 15

3/

4"

011887

011889

011891

x 17

1/

2"

011898

011900

011902

x 18

1/

2"

011909

011911

011913

2" x 14 1/2"

011918

011920

011922

2" x 17 1/4"

011927

011929

011931

1/ " 2 1/ " 2 1/ " 4

011938

011940

011942

011947

011949

011951

011958

011960

011962

2 1/4" x 22 1/4"

011969

011971

011973

2 1/2" x 24 1/4"

011980

011982

011984

1 1 1

7/ " 8 7/ " 8 7/ " 8

1

2" x 17 2" x 18 2" x 19

5-18 www.nov.com