Smith Rotating Control Devices

Rotating Control Devices

TABLE OF CONTENTS

“Under Pressure…In Control”

Rotating Control Devices

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At Balance with Smith

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HOLD 1500 and 2500 Rotating Control Devices

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HOLD Offshore Conversion Kit

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Marine Riser Installation

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RDH 2500 Rotating Control Device

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Hydraulic Power Unit/Lubrication System

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DHS 1400 Rotating Control Device

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Model 7068 Rotating Control Device

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Model 8068 Rotating Control Device

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Model 7368 Rotating Control Device

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Model 8068-G Rotating Control Device

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Rotating Control Device Accessories

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Smith Services is an industry leader in providing Rotating Control Devices (RCD), also known as rotating heads. An RCD seals around the drillstring components, diverting dust, mud, air/gas, mist, foam or steam away from the rig floor. From conventional air, gas and geothermal drilling to today’s complex Underbalanced Drilling (UBD) and Managed Pressure Drilling (MPD) projects, Smith Services has RCDs designed for the job. Smith products are backed by experienced operations and service personnel ensuring that the application, installation and demobilization are executed properly. The stripper element is the critical component of the Smith Services RCD. This is the active barrier between the fluids in the wellbore and the rig floor personnel. A stretch-fit seal is created by the stretch interference fit between the kelly/drill pipe and the ID of the stripper element. This ensures a positive seal at all times. Seal reliability and stripper element life are maximized through the strict material quality and manufacturing process controls used to build each Smith Services stripper element.

The Stretch-Fit Seal Advantage • Stretch interference fit around the drill stem components to seal 100 percent of the time • Stripper elements that are easily replaced at the rig • Maintainable by the rig crew • Seal that is not lost in the event of any type of hydraulic or electrical power disruption • Seal that is enhanced in the presence of wellbore pressure Applications • Rig site safety is the main reason for utilizing an RCD. This piece of equipment enables drilling operations to continue while isolating the drilling personnel from potentially harmful wellbore fluids and gasses • Conventional air, mist, foam and gas drilling require an RCD for the isolation and redirection of the wellbore discharge • RCDs protect the environment by directing potentially harmful wellbore fluids and gasses through the processing equipment on location, before being returned to the atmosphere • Underbalanced and managed pressure drilling operations require the use of an RCD to safely direct the wellbore flow through the necessary processing equip-

At Balance® with Smith The At Balance Automated Pressure Drilling Services provide a pressure management method which increases safety, enhances performance and reduces drilling costs. This revolutionary technology uses the Integrated Pressure Manager™ (IPM), which combines a high speed programmable system with a real-time hydraulics model to control bottomhole pressure with unmatched speed and precision. Combined with the Smith HOLD Rotating Control Device, customers now have a high-performance solution for their most challenging managed pressure drilling applications.

At Balance is a registered trademark of Shell Technology Ventures Fund 1 B.V.

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ment as drilling operations progress. An RCD is required in all types of UBD & MPD operations, however, a good deal of planning must be done to ensure the right equipment and the appropriate stripper elements are selected Geothermal drilling requires an RCD designed to operate at high temperatures. High-temperature stripper elements are also necessary Drilling risks from problems such as lost circulation, fresh water flows or unexpected events from wildcat exploration wells can be mitigated with the use of an RCD to control potential influx

Note: These products, regardless of pressure ratings, are diverters and not blowout preventers. Note: The published test pressure ratings contained herein pertain to the bearing section lower seal assemblies only and do not apply to any of the stripper elements. Further to this, Smith Services, a Business Unit of Smith International, Inc., does not guarantee, either expressed or implied, the pressure ratings published in this or any other printed materials.

HOLD® 1500 and 2500 Rotating Control Devices The HOLD Rotating Control Device comes in two sizes: the HOLD 1500 and the HOLD 2500. They are both designed with rig safety and operational reliability in mind. The hydraulically operated lock-down system eliminates the need to send personnel below the drilling floor to release primary or secondary locking systems when installing or replacing the stripper element. These elements can be changed independent of the bearing assembly, saving additional rig time and eliminating the need for excess inventory on location. The HOLD Advantage • HOLD 1500 - Rated to 1500 psi operating pressure and up to 13 3⁄8" through the bearing assembly • HOLD 2500 - Rated to 2500 psi operating pressure and up to 12 1⁄4" through the bearing assembly • Static test pressure rated for: HOLD 1500 - 1,500 psi HOLD 2500 - 3,000 or 5,000 psi • Rig personnel safe on the rig floor during release and removal of the seal element • Designed for safe, reliable fluid diversion • Reduced trip time and improved well site safety

HOLD® 1500 and 2500 Rotating Control Devices

Features and Benefits • Complete hydraulic lock-down and release of the stripper element • Control console conveniently located on the rig floor • Fail-safe locked mechanism that requires hydraulic pressure to open • Safety Interlock System that prevents release of the seal element in the presence of wellbore pressure • Secondary mechanical locking system not required • Visual indicator pin on the head that confirms when the system is locked down

Features and Benefits • Improved rig safety • Control console located conveniently on the rig floor • Stretch-fit stripper element to provide an uninterrupted wellbore seal • Large heavy-duty tapered roller bearings to provide low-torque rotation and load support • Continuous circulation system lubricates bearings and seals for reliable service • Independent high-pressure seal systems for optimum performance • Full range of stripper elements for oil, gas or geothermal drilling • Real time wellbore pressure sensor and chart recorder

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Focus on HSE The offshore kit option for the HOLD 1500/2500 is the only system currently available which is in compliance with 100% zero environmental discharge. In the event of a stripper element failure, the released fluids are safely contained within the overshot riser, preventing minor environmental incidents from impacting rig operations. The offshore kit is easily adapted to land applications where zero discharge compliance requirements are in effect.

Remote Hydraulic Operation The HOLD RCD enables the complete replacement of the stripper element without going below the rig floor to unbolt any primary or secondary locking bolts to unlock the clamp. The HOLD RCD offers a superior clamping system that is hydraulically actuated for both locking and unlocking. The driller operates all hydraulic systems from a control console installed conveniently on the rig floor. The remote operated hydraulic clamp improves rig safety and decreases element replacement time.

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The HOLD RCD requires the HighPressure Hydraulic Skid for rig site operation.

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Specifications HOLD 1500

HOLD 2500

Rotating Test Pressure

1,500 psi

2,500 psi

Static Test Pressure

1,500 psi

3,000 psi/5,000 psi

Maximum RPM

150 rpm

150 rpm

58”

58”

13 ⁵⁄₈”

12 ¼”

Rotary Drive

Yes

Yes

Top Drive

Yes

Yes

Height Maximum Bearing

HOLD RCD Components 1. Drive Assembly 2. Stripper Element 3. High-Pressure Seal Section 4. Mounting Spool 5. Visual Indicator Pin 6. Latching Lug 7. Bearing Assembly 8. Wellhead Adapter Spool 9. Inlet Flange to match Annular BOP

Pressure ratings have been determined through controlled laboratory test procedures. Due to the uncontrolled environment of well drilling operations, Smith International, Inc., its Business Units, Agents and Affiliates make no warranty, either expressed or implied, on the pressure ratings contained herein. Smith International, Inc. does not, under any circumstances, recommend that its rotating drilling heads be used as primary blowout prevention equipment.

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HOLD® Offshore Conversion Kit The HOLD Offshore Conversion Kit can be installed on either the HOLD 2500 RCD or the HOLD 1500 RCD bearing section as needed. The Offshore Conversion Kit modifies the top of the HOLD RCD to provide a custom flange at the top of the RCD. A typical installation would provide a top flange with a welded-on 24 inch OD Overshot Mandrel to engage the Overshot Packer for jack-up or tension-leg drilling platform installation, however, almost any configuration of equipment can be provided. While the Offshore Conversion Kit is not designed to be a structural member of the Marine Riser, it provides a fluid connection to enable flow through the RCD to

the diverter and bell nipple used in many typical marine installations, and substantial side loads can be accommodated which help maintain RCD alignment with the rotary or top drive above. A 16.8 inch minimum ID is required above the RCD to allow installation of the stripper rubber elements. The maximum OD of the bearing assembly with the conversion kit installed is 30 inches, and it adds approximately 3 inches to the height of the RCD. HOLD Offshore Conversion Kit Components 1. Overshot Mandrel 2. Special Top Flange 3. Offshore Conversion

Marine Riser Installation With the stripper rubber element installed, all return flow is diverted through the side outlet on the wellhead adapter spool. In typical installations, a valve is installed on the adapter spool outlet to allow the flow to be directed through the rigs conventional mud system when the stripper rubber is removed.

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HOLD 2500 Bearing Section with Offshore Conversion Kit installed

Control Console

Top view looking into the RCD

Typical Marine Riser Installation

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RDH 2500® Rotating Control Device •

The RDH 2500 Rotating Control Device (RCD) offers built-in safety features that make this head an excellent choice for underbalanced and managed pressure drilling projects. The stripper element can be easily changed independent of the bearing assembly, saving rig time and eliminating the need for excess inventory on location. This product features a split body design with the bearing assembly attaching to the mounting spool via a heavy-duty lower clamp.

Stretch-fit stripper element to provide an uninterrupted wellbore seal Large heavy-duty tapered roller bearings to provide low-torque rotation and load support Continuous circulation of hydraulic oil to lubricate and cool the bearings and seals Independent high-pressure seal assembly to ensure failsafe operation Elastomers that are available for oil, gas, high-temperature and water-based drilling fluids Dual stripper element adapter to increase drilling personnel rig floor safety

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Features and Benefits • High-pressure oil circulation and lubrication system • Real-time wellbore pressure sensor and recorder

Hydraulic Power Unit/Lubrication System Drive bushing

Clamp bolts

Top clamp

Bearing assembly Lower clamp

The Hydraulic Power Unit (HPU) is an important component of the HOLD® 1500/2500 and the RDH 2500® Rotating Control Devices (RCD). This unit pumps oil that lubricates and cools the bearing assemblies and delivers the required pressure to the inside of the high pressure seals, enabling them to hold up to 3,000 or 5,000 psi (static test pressure) wellbore pressure. The HPU is located away from the drilling floor, requiring a 110V electrical supply and an air supply from the rig. The operational features of the HOLD High-Pressure HPU are: • Two large 75-gallon oil reservoirs • Separate high-pressure and lowpressure lubrication systems

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Built-in air compressor that automatically engages if the rig air supply is disrupted High-pressure lubricant system regulated by a mechanical system (electrical wiring not required below the rig floor) Wellbore pressure sensor that signals the high-pressure lubricant system to deliver measured pressure plus an additional 150 psi, ensuring a positive pressure differential across the seal face A seven-day chart recorder that maintains a continuous wellbore pressure record A control console located on the rig floor that operates the clamping system, and is independent of the High-Pressure HPU

Low Pressure Lubrication Since the bearing assemblies in all Smith Services rotating heads are sealed, a low-pressure lubricator is a necessary part of the system. The lubricator does not have to be placed on the rig floor and only needs to be hooked to the rig air supply to operate. The system is virtually maintenance free, requiring only occasional service from the rig crew to top off the oil in the reservoir. The lubricators come in two types: • Recirculating system for use with high-temperature applications • Non-recirculating system for use in normal conditions and cold temperature applications

Outlet flange

Specifications HOLD 1500

HOLD 2500

RDH 2500

Rotating test pressure

1,500 psi

2,500 psi

2,500 psi

Static test pressure

1,500 psi

3,000 psi / 5,000 psi

3,000 psi

Max. rpm

150 rpm

150 rpm

150 rpm

54"

54"

48" - 59"

Max. width

39 5⁄8"

39 5⁄8"

39 5⁄8"

Bearing assy. rotary table pass through

27 1⁄2"

27 1⁄2"

27 1⁄2"

Single or dual

Single or dual

Single or dual

Bolt on

Bolt on

One-piece or bolt on

Rotary drive

Yes

Yes

Yes

Top drive

Yes

Yes

Yes

Dual stripper element adapter

Yes

Yes

Add 18" - 22"

13 5⁄8"

12 1⁄4"

9"

Height

Rotating stripper element Stripper element mounting

Max. pass through bearing assembly

Inlet flange

RDH 2500 RCD RDH 2500 HPU HOLD HPU

Technical Data Inlet Flange

Spool ID

Outlet Flange

7 1⁄16" - 5000#

7 1⁄16"

7 1⁄16" - 2000/3000/5000#

7 1⁄16" - 5000# Shorty

7 1⁄16"

7 1⁄16" - 2000/3000/5000#

9" - 3000#

9"

7 1⁄16" - 2000/3000/5000#

11" - 3000/5000#

11 1⁄4"

7 1⁄16" - 2000/3000/5000#

11" - 3000# Shorty

11 1⁄4"

7 1⁄16" - 2000/3000/5000#

13 5⁄8" - 5000#

13 5⁄8"

7 1⁄16" - 2000/3000/5000#

Notes: • Kelly bushings are available for most API kellys • Stripper elements are available for 2 7⁄8", 3 1⁄2", 4 1⁄2", 5" and 5 1⁄2" drill pipe (other sizes available on request) Ordering instructions, please specify: • Inlet flange size • Outlet flange size • Kelly size and shape • Drill pipe size • Drilling fluid type • Expected circulating temperature • Expected surface pressure

HOLD 2500 Hose Reel

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DHS 1400 Rotating Control Device The DHS 1400 Rotating Control Device (RCD) is the Smith Services intermediate-pressure rated drilling head. Its compact design and large 14 inch thru-bore make it the ideal choice when substructure height is limited. The stripper element can be easily changed independent of the bearing assembly, saving rig time and eliminating the need for excess inventory on location. This product features a split body design with the bearing assembly attaching to the mounting spool via a heavy-duty lower clamp. Features and Benefits • Field replaceable bearing section • Stretch-fit stripper element that provides an uninterrupted wellbore seal • Large heavy-duty tapered roller bearings to provide low-torque rotation and load support • Wear bushing for wellhead adapter available for use prior to installation of drilling head • Elastomers available for oil, gas, high-temperature and water-based drilling fluids • Sealed bearing assembly retrievable through 22 ½ inch rotary table

Model 7068 Rotating Control Device The Model 7068 Rotating Control Device (RCD) is the low-pressure workhorse of the Smith Services rotating head fleet. It has established a reputation for dependability and ease of operation. The compact design of this head (the “Shorty” is less than 25 inches tall) makes it ideal for use on small drilling rigs where substructure height is limited.

Test plug Upper clamp Clamp bolt

Outlet flange

Inlet flange

Technical Data

Specifications 600 psi

Inlet Flange

Spool ID

Outlet Flange

Static test pressure

1,000 psi

7 1⁄16" - 3000#

7 1⁄16"

7 1⁄16" - 2000/3000#

Max. rpm

150 rpm

7 1⁄16" - 3000# Shorty

7 1⁄16"

7 1⁄16" - 2000/3000#

39 3⁄4" - 50 1⁄4"

9" - 2000/3000#

9"

7 1⁄16" - 2000/3000#

38"

11" - 3000/5000#

11 1⁄4"

7 1⁄16" - 2000/3000#

22 ⁄2"

11" - 3000/5000# Shorty

11 ⁄4"

7 ⁄16" - 2000/3000#

One-piece or bolt on

13 5⁄8" - 5000#

13 5⁄8"

7 1⁄16" - 2000/3000#

Rotary drive

Yes

13 ⁄8" - 5000# Shorty

13 ⁄8"

7 ⁄16" - 2000/3000#

Top drive

Yes

Max. pass through bearing assembly

14"

Rotating test pressure

Height Max. width Bearing assy. rotary table pass through

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Notes: • Kelly bushings are available for most API kellys • Stripper elements are available for 2 ⅞", 3 ½", 4 ½", 5" and 5 ½" drill pipe (other sizes available upon request) • Stationary casing stripper elements are available from 6 ⅝" to 10 ¾" upon special order

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Inlet Flange

Spool ID

Outlet Flange

Height

Static test pressure

750 psi*

9" - 3000#

9"

7 1⁄16" - 2000#

31"

Max. rpm

150 rpm

11" - 3000/5000#

11 1⁄4"

7 1⁄16" - 2000#

29 7⁄8"

24 3⁄8" - 38"

11" - 3000/5000# Shorty

11 1⁄4"

7 1⁄16" - 2000# or 7" threaded

24 3⁄8"

32 1⁄2"

13 5⁄8" - 3000#

14"

7 1⁄16" - 2000#

29 7⁄8"

One-piece or bolt on

13 5⁄8" - 3000# Shorty

14"

7 1⁄16" - 2000# or 7" threaded

24 3⁄8"

Rotary drive

Yes

13 5⁄8" - 5000#

13 5⁄8"

9" - 2000#

31 7⁄8"

Top drive

Yes

Height Max. width Stripper element mounting

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Add 18" - 22" 13 3⁄4"

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* Pressure ratings apply only to heads equipped with PolyPak seals

Ordering instructions, please specify: • Inlet flange size • Outlet flange size • Kelly size and shape • Drill pipe size • Drilling fluid type • Expected circulating temperature • Expected surface pressure

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Model 7068 RCD

250 psi*

Max. pass through bearing assembly 5

Inlet flange

Rotating test pressure

Dual stripper element adapter Stripper element mounting

Outlet flange

Technical Data

Specifications

DHS 1400 RCD

Drive bushing Clamp

Features and Benefits • Stretch-fit stripper element to provide an uninterrupted wellbore seal • Large heavy-duty tapered roller bearings to provide low-torque rotation and load support • Shock cushion in the retrievable drive bushing to absorb lateral drillstring impact, ensuring dependable bearing performance • Available in “Shorty” (only 24 ⅜ inches high) version • Elastomers available for oil, gas, hightemperature and water-based drilling fluids

Bearing assembly

Lower clamp

Clamp bolt

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Notes: • Kelly bushings are available for most API kellys • Stripper elements are available for 2 7⁄8", 3 1⁄2", 4 1⁄2", 5" and 5 1⁄2" drill pipe (other sizes available upon request) • Stationary casing stripper elements are available from 6 5⁄8" to 10 3⁄4" upon special order

Ordering instructions, please specify: • Inlet flange size • Outlet flange size • Kelly size and shape • Drill pipe size • Drilling fluid type • Expected circulating temperature

Model 8068 Rotating Control Device Features and Benefits • Stretch-fit stripper element to provide an uninterrupted wellbore seal • Large heavy-duty tapered roller bearings to provide low-torque rotation and load support • Shock cushion in the retrievable drive bushing to absorb lateral drillstring impact, ensuring dependable bearing performance • Elastomers available for oil, gas, high-temperature and water-based drilling fluids • Dual element adapter to increase drilling personnel safety

The Model 8068 Rotating Control Device (RCD) is designed for use on large diameter wells. This product features a split body design with the bearing assembly attached to the mounting spool via clamping dogs. The mounting spool is available for 13 ⅝ inch to 20 inch BOP bolt-on spools and 30 inch and 36 inch weld-on mounting flanges for conductor pipe. The bearing assembly uses the same reliable bearing and seal assembly as the Model 7068 RCD, ensuring consistent performance.

Model 7368 Rotating Control Device The Model 7368 Rotating Control Device (RCD) is designed for use where space is limited, such as on workover rigs. The Model 7368 head employs the same design features as the larger Model 7068 low-pressure RCD.

Model 8068 RCD Clamp Drive ring

Features and Benefits • Stretch-fit stripper element that provides an uninterrupted wellbore seal • Large heavy-duty tapered roller bearings to provide low-torque rotation and load support • One-piece combination drive bushing stripper element that passes through a 10 ½ inch rotary table • Elastomers available for oil, gas, high-temperature and water-based drilling fluids Bearing assembly

Specifications Rotating test pressure

250 psi*

Static test pressure

750 psi*

Max. rpm

150 rpm

Height (bearing assembly only)

Specifications

Mounting Spool

17"

Max. width

32 1⁄2"

Stripper element mounting

One-piece or bolt on

Rotary drive

Yes

Top drive

Yes

Max. pass through bearing assembly

Clamping dog

Seal

250 psi*

Static test pressure

750 psi*

Max. rpm

150 rpm

Height

23 7⁄8"

Max. width

24 1⁄2"

Stripper element mounting

13 3⁄4"

*Pressure ratings apply only to heads equipped with PolyPak seals

Flange Technical Data Casing Size

Height

Flange ID

20" mounting flange

6"

26 9⁄32"

30"/36" mounting flange

3"

26 9⁄32"

30" mounting flange with removable adapter ring

3 1⁄4"

28 3⁄4"

Outlet flange

Inlet flange

Inlet Flange

Height

Spool ID

Outlet Flange

16" - 2000#

20"

16 3⁄4"

9" - 3000#

20" - 2000/3000#

20"

20 3⁄4"

9" - 3000#

Clamp Clamp bolt

One-piece

Rotary drive

Yes

Top drive

Yes

Max. pass through bearing assembly

7 1⁄16"

Technical Data

Weld-on Mounting Adapter

Spool Technical Data

One-piece combination drive bushing stripper element

* Pressure ratings apply only to heads equipped with PolyPak seals

Note: Customer welds mounting flange directly to conductor pipe

Notes: • Kelly bushings are available for most API kellys • Stripper elements are available for 2⅞", 3½", 4½", 5" and 5½" drill pipe (other sizes available upon request) • Stationary casing stripper elements are available from 6 ⅝" to 10 ¾" upon special order

Rotating test pressure

Clamping dog

Seal

Inlet Flange

Spool ID

Outlet Flange

7 1⁄16" - 2000/3000/5000#

7 1⁄16"

4 1⁄16" - 2000/3000#

7 1⁄16" - 2000/3000/5000#

7 1⁄16"

7 1⁄16" - 2000#

Notes: • Kelly bushings are available in 3" square and 3 1⁄2" hex • Stripper elements are available for 2 3⁄8", 2 7⁄8" and 3 1⁄2" drill pipe Ordering instructions, please specify: • Inlet flange size • Outlet flange size • Kelly size and shape • Drill pipe size • Drilling fluid type • Expected circulating temperature

Ordering instructions, please specify: • Inlet flange size • Outlet flange size • Kelly size and shape • Drill pipe size • Drilling fluid type • Expected circulating temperature

Bowl

Outlet flange

Model 7368 RCD

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Inlet flange

Model 8068-G Rotating Control Device The 8068-G Geothermal Rotating Control Device (RCD) has been designed with several unique features that enable it to operate safely in a high temperature environment. It utilizes the Model 8068 RCD bearing and drive bushing section, ensuring proven reliability and performance. The geothermal head utilizes a split body design with the bearing section securely fastened to the spool and sealed for safe operation. The spool is equipped with a large diameter rubber element, designed with an ID large enough to safely seal on large diameter drillstring components such as drill collars. Special water injection ports enable the stripper elements and exposed seal faces to be cooled and lubricated by circulating water through the head when stripping in and out of the well.

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Features and Benefits • Stretch-fit stripper element to provide an uninterrupted wellbore seal • Large heavy-duty tapered roller bearings to provide low-torque rotation and load support

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All rubber components that have been specially formulated for high temperature service Dual stripper element design Upper element that rotates with the kelly sealing around drill pipe, tool joints and the kelly Upper stripper element that can be changed without removing the bearing Lower stationary element that seals around large diameter drillstring components such as drill collars Spool equipped with a port for bleeding off pressure between the upper element and the closed BOP Drive bushing and stripper element retrievable through a 17 ½ inch rotary table Bearing assembly retrievable through a 27 ½ inch rotary table Shock cushion in the retrievable drive bushing that absorbs lateral drillstring impact ensuring dependable bearing performance Available with either 14 inch or 15 ¼ inch thru-bore

Specifications

Rotating Control Device Accessories Stripper Elements All Smith Services stripper elements are manufactured to strict material specifications and a proprietary compound formulation. Every batch of rubber is subject to multiple QA tests and verification prior to molding. The stripper elements are molded under conditions of controlled and documented load weight, temperature, cavity pressure and cure time. Once elements are molded, documentation for the entire batch of stripper elements is reviewed by an independent rubber lab, completing the QA process. Smith Services builds quality and reliability into each stripper element so that "when you are under pressure you are in control.”

Clamp Bearing assembly

Clamping dog

Outlet flange

Inlet flange Spool

Model 8068-G RCD

750 psi*

Inlet Flange

Spool ID

Outlet Flange

Max. rpm

150 rpm

13 5⁄8" - 3000#

14"

9"- 2000/3000#

Height

57" - 65"

16" - 2000#

16 3⁄4"

9"- 2000/3000#

Max. width

37 1⁄2"

20" - 2000/3000#

20 3⁄4"

9"- 2000/3000#

Bearing assy. rotary table pass through

27 1⁄2"

Low-pressure One-piece Combo Stripper Element • Combination drive bushing and stripper element • Reduced replacement time and elimination of cap screws • Available in natural rubber, nitrile, butyl or polyurethane • Will fit Models 7068, 8068 and DHS 1400 RCDs

Model 7368 One-piece Combo Stripper Element • Combination drive bushing and stripper element • Reduced replacement time and elimination of cap screws • Available in natural rubber, nitrile, butyl or polyurethane

High-pressure One-piece Combo Stripper Element • Combination drive bushing and stripper element • Reduced replacement time and elimination of cap screws • Available in natural rubber, nitrile or butyl • Will fit the RDH® 2500 RCD Standard Stripper Element • Secured to drive bushing with cap screws and locking wire • Available in natural rubber, nitrile, butyl or polyurethane

Heavy-duty Stripper Element • Secured to drive bushing with cap screws and locking wire • Available in natural rubber, nitrile or high temperature compounds • Strips tools up to 8 ¾ inch OD • Available for use on Models 7068, 8068 and DHS 1400 RCDs Accessories • Dual element adapter for HOLD 1500, HOLD 2500 and RDH 2500 • Stabbing mandrels • Snubbing adapter • Logging adapter

High-pressure one-piece combo stripper element

Low-pressure one-piece combo stripper element

One-piece or bolt on

Rotary drive

Yes

Top drive

Yes

Max. pass through bearing assembly

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Technical Data

Static test pressure

Stripper rubber mounting

Stripper elements are passive seals that maintain a constant barrier between the atmosphere and wellbore. The inner diameter of stripper rubbers should always be smaller than the objects (e.g. drill pipe, tool joints) passing through to ensure sealing with zero wellbore pressure. The outer geometry of the passive

Strips tools up to 8 ¾ inch OD Available for use on Models 7068, 8068 and DHS 1400 RCDs

seal creates higher sealing pressure as wellbore pressure increases.

Model 7368 one-piece stripper element

13 3⁄4"

* Pressure ratings apply only to heads equipped with PolyPak seals Notes: • Kelly bushings are available for most API kellys • Stripper elements are available for 2 ⅞", 3 ½", 4 ½", 5" and 5 ½" drill pipe (other sizes available upon request) • Stationary casing stripper elements are available from 6 ⅝" to 10 ¾" upon special order

Ordering instructions, please specify: • Inlet flange size • Outlet flange size • Kelly size and shape • Drill pipe size • Drilling fluid type • Expected circulating temperature

Standard stripper element

Note: Contact a Smith Services representative to assist with stripper element selection.

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Heavy-duty stripper element