,DanaInfo=Www.hub.Slb.com+S03 WC Ver1 19 4137706 01

Winch Control Standard Reference: 4137706) Version: Release Date: EDMS UID: Produced: Owner: Author:

WL-QHSE-S03-WC (InTouch ID 1.19 10-Dec-2009 1648247838 10-Dec-2009 22:18:55 IPC InTouch-Wireline Stephen Hinson, Juan Real Paredes

Private

Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

Winch control, Winch , QHSE, S03 s03, WL, WL QHSE

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

WL-QHSE-S03-WC / Legal Information

Legal Information Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved. This work contains the confidential and proprietary trade secrets of Schlumberger and may not be copied or stored in an information retrieval system, transferred, used, distributed, translated or retransmitted in any form or by any means, electronic or mechanical, in whole or in part, without the express written permission of the copyright owner. Trademarks & Service marks Schlumberger, the Schlumberger logotype, and other words or symbols used to identify the products and services described herein are either trademarks, trade names or service marks of Schlumberger and its licensors, or are the property of their respective owners. These marks may not be copied, imitated or used, in whole or in part, without the express prior written permission of Schlumberger. In addition, covers, page headers, custom graphics, icons, and other design elements may be service marks, trademarks, and/or trade dress of Schlumberger, and may not be copied, imitated, or used, in whole or in part, without the express prior written permission of Schlumberger. A complete list of Schlumberger marks may be viewed at the Schlumberger Oilfield Services Marks page: http://markslist.slb.com

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

WL-QHSE-S03-WC / Document Control

Document Control Owner:

IPC InTouch-Wireline

Author:

Stephen Hinson, Juan Real Paredes

Reviewer:

Tim McLaughlin

Approver:

Carl Strubberg

Contact Information Name:

IPC InTouch-Wireline

Revision History Version Date

Description

Prepared by

1.19

10-Dec-2009 Remove reference to G001 – replaced with reference to S11–HT). Revised sections 4.4.4 and 4.4.10 to resolve ticket #: 4925132.

Author: Shyann Roy

1.18

10-Nov-2009 Revise section 4.4.9, Downhole Operations/Logging, Step 7 - (ticket #: 4919746)

Author: Shyann Roy

1.17

20-May-2009 Revise section 4.4.9 Wellsite Operations, Pulling Out of the Hole, Bypassing.... .

Author: Shyann Roy

1.16

13-May-2009 Revised section 4.4.9 and reference to high tension standard in section 4.4.10.

Author: Shyann Roy

1.15

27-Mar-2009 Revised Section 4.4.9 “Wellsite Operations”, step 4.

Author: Ezequiel Saavedra

1.14

26-Feb-2009 Clarifications made to reduce discrepancies Author: Ezequiel Saavedra and improve consistency among corresponding Standards, Manuals, and Procedures. Added the following definitions: spudding, wireline cycling and stuck situation. Revised section 5.2 and 5.2.1 while removing sections 5.2.2 and 5.2.2.1 and 5.2.2.2. Revised section 5.1.2 “Additional Operating Considerations”. Revised section 5.5, Winchman Notes Example.

1.13

18-Feb-2009 Revise 5.2.2.2 The Cyclic Method, second paragraph...”Make sure...”.

Author: Ezequiel Saavedra

1.12

28-Jan-2009 General revision. Revise revision log for Rev. 1.11.

Author: Ezequiel Saavedra

1.11

22-Jan-2009 Revise procedure section 4.4.2 and 4.4.9. Author: Ezequiel Saavedra Added reference to High Tension Standard (S11) for operations over 8,000 lbf, section 5.2 (Ticket 4734756).

1.10

06-Nov-2008 Revise step 1 in section 5.2.2.1, “Holding Maximum Tension”.

Author: Ezequiel Saavedra

1.9

15-Aug-2008 Revise and retitle appendix section 5.2.2 to “Options for getting free.”

Author: Ezequiel Saavedra

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

WL-QHSE-S03-WC / Document Control

Version Date

Description

1.8

28-Jul-2008

Revised Appendix 5.1 “Recommended Cable Author: Ezequiel Saavedra Speed Guidelines” (Ticket: 4537937). Add new section 4.4.12, Winch Control During TLC Operations.

1.7

10-Jan-2008 Revise the following sections: 4.4.2, 4.4.3, Author: Timothy McLaughlin 4.4.4, 4.4.5, 4.4.7, 4.4.9 step 7, 5.3. For ticket # 4357496 added “and estimate “depth of sticking”.. to section 5.2.2, step 1.

1.6

21-Sep-2007 Update Z-chart graphic and add quality check to “Weakpoint and Maximum Safe Pull” section.

Author: Ezequiel Saavedra

1.5

14-Dec-2006 Reword TLS ON and OFF to Tension Limiting System Enabled / Disabled, as appropriate. Add Basic Winch Hand Signals

Author: Tom Teipner, Luis Cresp

1.4

13-Jul-2006

Author: Matt Sauder

1.3

12-Jun-2006 Revise Section 4.4.13, Inspections, Test and Maintenance.

Author: Stephen Hinson

1.2

14-Mar-2006 Revise “Stuck tool procedure”

Author: Tom Teipner

1.1

25-Jan-2006 Incorporate editing comments.

Author: InTouch

1.0

30-Dec-2005 Initial issue of Rev. 1.0.

Author: Juan Real Paredes/Nigel Lewis

Revise 4.4.4 to require a HARC for 8,000 lbs or greater pull.

Prepared by

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

v

WL-QHSE-S03-WC / Table of Contents

v

Table of Contents 1

Statement of Standard

2

Objective

3

Scope

4 4.1 4.2 4.3 4.4 4.4.1 4.4.2 4.4.3 4.4.4 4.4.5 4.4.6 4.4.7 4.4.8 4.4.9 4.4.10 4.4.11 4.4.12 4.4.13 4.4.14 4.4.15 4.4.16 5 5.1 5.1.1 5.1.2 5.1.3 5.1.4 5.2 5.2.1 5.3 5.4 5.4.1 5.4.2 5.5 5.6

___________________________________________

1

_________________________________________________________

1

____________________________________________________________

1

Implementation and Monitoring __________________________________ Definitions _____________________________________________________ Responsibilities ________________________________________________ Reporting and Investigation _____________________________________ Procedures ____________________________________________________ Safe Winch Operations Placard _____________________________ Alarms and Shutdowns _____________________________________ Winch Speed Guidelines ____________________________________ Weakpoint and Maximum Safe Pull __________________________ Secondary Depth Control ___________________________________ Customer-Provided Equipment ______________________________ Wellsite Setup ____________________________________________ Winch Tension Limiting System (TLS) _______________________ Wellsite Operations _______________________________________ Logging Operations Under High Tension ____________________ Winch Control During Fishing Operations ___________________ Winch Control During TLC Operations ______________________ Shop Winch _______________________________________________ Inspections, Tests and Maintenance ________________________ Performance Monitoring ___________________________________ Training and Qualification __________________________________

2 2 3 5 5 6 6 7 7 9 9 10 11 11 14 14 15 15 15 16 16

Appendices _____________________________________________________ Recommended Cable Speed Guidelines (ALC Operations Manual) ______________________________________________________ Minimum Operating Requirements __________________________ Additional Operating Considerations ________________________ Consequences of Winch Speed ____________________________ Consequences of Cable Cycling ____________________________ Stuck Tool Situation ___________________________________________ Stuck Situation Procedure _________________________________ Bump-Up Procedure __________________________________________ TLS Operation Guidelines _____________________________________ TLS As Pull-Off Prevention/Safety __________________________ TLS Used During TLC Operations __________________________ Winchman Notes Example _____________________________________ Safe Winch Operations Placard ________________________________

17

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

17 17 20 20 21 22 22 23 24 24 25 26 27

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

vi

WL-QHSE-S03-WC / Table of Contents

5.7 6 6.1 6.2 6.2.1

Basic Winch Hand Signals

vi

_____________________________________

29

Documents and References _____________________________________ Normative References ________________________________________ Informative References ________________________________________ InTouch Reference Pages for Winch Control Equipment _____

31 31 31 31

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

1

WL-QHSE-S03-WC / Statement of Standard

1

1

Statement of Standard Winch control, Winch, S011, s0011, s011, QHSE, IPC

Winch operations involving a wireline cable and winch unit are part of virtually every job performed across Wireline. These operations present a significant risk to Schlumberger personnel and equipment and are seen by Schlumberger clients as an integral part of quality service delivery. Therefore, all winch operations shall be conducted in a way that minimizes these risks to an acceptable level, through management of the required equipment and procedures, qualification of the involved personnel, and appropriate Hazard Analysis and Risk Control performed as specified in OFS QHSE Standard 020.

2

Objective The purpose of this Standard is to define minimum requirements for all operations in which a wireline cable and winch unit are used. These requirements enable Schlumberger to minimize the associated risk to both personnel and equipment, while also providing the client quality service delivery. Any non-compliance with this Standard requires an approved exemption as outlined in the Management of Change and Exemption Standard – Wireline appendix.

3

Scope All cable/winch operations conducted across Wireline, including those involving contractors and contractors’ equipment, shall comply with this Standard and with applicable client requirements, whichever are the highest.

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

2

WL-QHSE-S03-WC / Implementation and Monitoring

4

4.1

2

Implementation and Monitoring Definitions Term

Definition

CMTD

The Cable-Mounted Tension Device (CMTD) provides the measurement of tension on the cable at surface.

ECRD

Electrically Controlled Release Device

ERS

Electronic Release Sub

IDW

The Integrated Depth Wheel (IDW) provides the cable depth measurement.

Logging head

The piece of equipment that provides both the mechanical and electrical connection between the logging tools and cable

LWPR

Lower Weakpoint Rating. The weak point may break from this tension value onwards.

Maximum safe overpull (MSOP)

The difference between normal tension and maximum safe pull. This value should remain fairly constant over the entire depth of the well.

Maximum safe pull (MSP)

The highest amount of tension that can safely be applied to the cable at the surface. This value changes as the toolstring changes depths.

Normal tension

Tension measured at surface including weight of system in mud, friction force and fluid drag exclusively. If the tension measurement is affected by well conditions (i.e., wash out, collapsed well, differential pressure suction force, etc.) then the tension is NOT considered normal.

POOH

Pulling out of hole (come out of hole)

RIH

Running in hole

Spudding

“In” and “out” Wireline movement in an attempt to force the toolstring through an obstruction in the hole.

Static tension

Stationary weight of the cable plus tool in the hole as measured at surface.

Stuck situation

Toolstring is not able to move neither uphole or downhole.

SWCT

The Smart Winch Control Terminal (SWCT) provides the crew with depth, tension, setups alarms, etc.

TLC

Tough Logging Conditions (TLC) is the conveyance of wireline logging tools on drillpipe or coiled tubing.

TLS

Winch Tension Limiting safety system

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

3

WL-QHSE-S03-WC / Implementation and Monitoring

4.2

3

UPO

An Unintentional Pull Off (UPO) occurs when a field crew member loses control of downhole equipment such as logging tools or perforating guns. Control is lost if the crew member releases the weakpoint prematurely or if the cable breaks. This is true for loss of control at surface or downhole.

WAFE

The Wireline Acquisition Front End system

WCP

Winch Control Panel

Weakpoint

The part of the logging head that provides an intentional weak link between the cable and the logging tools. The weakpoint provides the means for a controlled, mechanical release of the cable from the tools at the logging head, should the need arise. The strength of the weakpoint is temperature-dependent.

WFDD

The WAFE Depth Display provides the crew with depth, tension, setups alarms, etc.

Winch

The drive system that turns the winch drum conveying wireline cable

Winch drum

The spool that holds the wireline cable; connected to the winch

Winch unit

The complete system used to convey wireline cable—usually comprising winch, drum, and control systems

Wireline (or cable)

The cable on which Wireline logging tools are lowered into the well and through which signals from the measurements are passed. The cable consists of a central section with conductors surrounded by a metal, load-bearing armor.

Wireline cycling

“In” and “out” Wireline movement with a stuck toolstring.

WPD

Winchman’s Portable Display

Responsibilities • Line Management Line Management is responsible for ensuring compliance with this standard. • GM The GM and Area are responsible for auditing the process and documenting compliance with this Standard. • WLH WLH is responsible for providing the field with the appropriate equipment required to perform safe and efficient winch operations. • InTouch InTouch is responsible for providing technical assistance related to winch operations.

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

4

WL-QHSE-S03-WC / Implementation and Monitoring

4

All winch operations shall be supervised directly by the engineer or specialist in charge. This is true even if the lead operator of the field crew has more experience than the engineer or if the client is inside the logging unit. The engineer is ultimately responsible for the operation. Listed below are some specific responsibilities for wellsite personnel. • Engineer or Specialist in Charge – Ensure that the right crew members are in the right place when the tool is near the surface. This includes matching tasks with appropriate skills and ensuring that people are in proper position prior to moving the winch. When considering assignments, the engineer shall ensure that the winch operator is 100 percent capable of safely operating the winch. Be especially aware whether there is an adequate amount of rest and alertness (24-hour lifestyle). – Select weakpoint and manage the cable speed during the operation. – Enter the correct WFDD depth and tension parameters. This includes the IDW/CMTD calibration values and the depth/tension alarms and shutdown ranges. – Calculate and display the maximum safe pull (MSP) in the winch area. – Remove distractions from the operation. The use of cell phones is strictly banned during the operations of the winch. It is essential for the engineer to prioritize and manage the operational tasks. This means the engineer must stop other tasks at hand (such as playbacks) when the tool nears the surface. If the engineer cannot stop these tasks, stop the winch until full control is possible.

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

5

WL-QHSE-S03-WC / Implementation and Monitoring

5

• Crew – The winch operator shall be proficient with controls, indicators, standards and emergency procedures for the particular unit being used. – Before beginning the job, the winch operator shall take time to become familiar with the cable position on the drum at tool zero and all values on the WFDD. – If a change in winch operators is necessary, the relief winch operator shall be fully briefed. Be sure to review any changes in measured vs. driller depths, any tight or problematic spots, and current winch settings including normal tension, cable speed, and maximum safe pull specified by the engineer. – The crew must understand that operations within 300 ft of the surface require the operator’s undivided attention. Any “in cab” distractions should be eliminated before proceeding with winch operations. – The operator should review the basic winch hand signals to ensure standard hand signals are being used. (Section 5.7)

4.3

Reporting and Investigation Reporting, investigation and review of CMSLN incidents related to winch control shall follow the QHSE Event Reporting and Management (HSE) Standard (SLB-QHSE-S002-HSE), most specifically its appendix for Wireline operations. In the case of UPO or other winch control-related CMS, the field engineer is responsible for capturing all the details required for complete analysis of the incident. Information such as WFDD logs, sequence of events, well data, logs, equipment, etc. shall be captured at the time of the incident and sent immediately to the location manager. The location manager is ultimately responsible for accurate and timely reporting of these incidents. The manager shall also guide the investigation and analysis process, including review of the location analysis with InTouch.

4.4

Procedures Operating procedures specific to each piece of equipment required in winch operations can be found in the operations manuals for the specific equipment. (Refer to Section 6.2.1 – InTouch Reference Pages for winch control equipment.)

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

6

WL-QHSE-S03-WC / Implementation and Monitoring

4.4.1

6

Safe Winch Operations Placard The official WLH Safe Winch Operations Placard shall be posted in all wireline logging units. The latest version of this placard shall be displayed in view of the winch operator in addition to any required local language translations. Each crew member shall be familiar with the procedures listed on the placard. The most current version of the placard is located in InTouch Content ID # 3885138. (Refer to Section 5.6 – Safe Winch Operations placard). See Figure 5-3.

4.4.2

Alarms and Shutdowns The WFDD (and/or WCC or SWCT) is the depth/winch control and monitoring system used in wireline logging units. Alarms and shutdowns are used on both the tension and depth systems to help safely control the operation within predefined safe operating ranges. Engineers must verify the systems are functional. • The alarm is both visual and audible, warning that the operator is approaching a predefined operating limit. • The shutdown also gives both a visual and an audible warning, but automatically stops the winch and prevents operation beyond the predefined limit. The engineer/specialist in charge shall enter correct depth and tension parameters into the winch control system. This includes the updated IDW/CMTD calibrations and appropriate depth/tension alarms and shutdown ranges.

Potential Severity: Potential Loss: Hazard Category:

Major Assets, Process Machinery equipment hand tools

Alarms and shutdown systems provide back-up protection but may be slow to engage and do not operate in a fail-safe manner. They must be functionally tested on a each job. When approaching surface these systems must not be relied upon to stop the winch in time to prevent a pull-off. Speed control is the operator’s best protection against pull-off. Speed too fast for conditions is a leading cause of unplanned pull-offs.

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

7

WL-QHSE-S03-WC / Implementation and Monitoring

4.4.3

7

Winch Speed Guidelines Many factors need to be considered to decide on an appropriate winch speed for a given operation. In general, the difference in normal tension compared to static tension provides the most valuable information. If the tool depth is less than 100 m (300 ft), the cable speed has to be less than 2,000 ft/hr. However, if the need arises, the speed can be increased up to 6,000 ft/hr for subsequent runs during a continuous operation, between 100 m (300 ft) and a depth equal to the length of the toolstring or 15 m (50 ft), whichever is deeper. Remember that cable stretch and reaction times will be less when operating at shallow depths. Note that in the following cases, the 2,000 ft/hr limit remains: rig-up/down operations; caliper or other device in the OPEN position; pressure jobs where tool trap and head catcher are not available; descents with misrun; potential split gun; and when the status of the toolstring or depth control systems is in doubt. When the logging toolstring is about to pass through difficult sections inside a well (such as line-hangers, sub-sea BOP (blow out prevention), surface BOP, etc.), this should be considered when deciding the winch speed to prevent an unintentional pull-off or stuck depth. Recommended Wireline Cable Speed Guidelines for “Normal Operating” Conditions are maintained by IPC in Chapter 7 of the Armored Logging Cable Operating Manual (InTouch # 3614996). Refer to the sections Recommended Cable Speed Guidelines Placard and 5.1, Recommended Cable Speed Guideline.

4.4.4

Weakpoint and Maximum Safe Pull The general rule is to use the strongest-rated weakpoint available that will still permit pulling off a stuck tool at total depth without exceeding the safe working load of the cable or logging unit. The weakpoint must also be able to carry the weight of the toolstring under normal logging operations. In some extreme cases, an ECRD or ERS (Electrically Controlled Release Device) should be considered in place of a standard mechanical weakpoint. Refer to the Tension model in the Schlumberger Tool Planner when choosing a weakpoint; this is essential for non-vertical wells (DCS InTouch case ID# 3272999). The engineer and winch operator need to know the maximum safe overpull value (MSOP) and the maximum safe pull (MSP) at all times. The

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

8

WL-QHSE-S03-WC / Implementation and Monitoring

8

maximum pull on the weakpoint should not exceed 75% of the lower weakpoint rating downgraded with temperature (LWPR). Therefore, the maximum pull at surface should not be bigger than 75% LWPR + force needed to pick up cable weight in mud and overcome friction force plus fluid drag on the cable: MSP = 75% LWPR + Wcm + Fc + Dc (with MSP the maximum safe pull, Fc the friction on the cable and Dc the fluid drag on the cable)

The normal tension measured at surface includes: TN = Wcm + Fc + Dc + Wtm + Ft + Dt (with TN the normal tension, Ft the friction on the tool and Dt the fluid drag on the tool)

Properly calibrated head tension measured downhole includes: Thead = Wtm + Ft + Dt ( with Thead the head tension measured by downhole sensor)

Thus: MSP = 75% LWPR + TN - Thead

For any situation where a valid and calibrated head tension is not available, The Wtm will provide with the next best value to estimate the MSP but in this case measuring TN at a speed as low as possible. Notice that using Wtm instead will actually overestimate MSP. • Double check the TN used to calculate MSP and compare to estimated value. Investigate, understand and explain differences in values. • Always use the LWPR value corrected for downhole temperature (See Heads Manual IT#: 3012542). Always remember that the strength of the weakpoint is a function of temperature. • The MSP shall also not exceed 50% of the fixed ends breaking strength of a good cable.

Quality Note Note that a good cable is defined as one meeting the requirements of the armor logging cable ductility test. • The maximum safe pull shall also not exceed the logging unit maximum load ratings. In any case where it is expected that the logging surface tension maximum safe pull will exceed 8,000 lbf, the Wireline High Tension Standard (WL-QHSE-S11-HT) must be followed.

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

9

WL-QHSE-S03-WC / Implementation and Monitoring

Potential Severity: Potential Loss: Hazard Category:

9

Serious Personnel Electrical

Blind reliance on electronic tool planners or spreadsheets is no substitute for understanding the math behind the calculations. Employees must be able to demonstrate a complete understanding of these principles prior to operating a winch unit.

4.4.5

Secondary Depth Control A properly calibrated IDW always provides the primary depth measurement. However, redundant depth systems should be employed to allow recovery in case one system fails. A minimum of three independent depth systems should be used at all times. The IDW provides two depth systems (wheels). When both are enabled, discrepancies (wheel slippage) are detected and automatically compensated for by the surface acquisition system. Ensure that both depth systems are enabled, functioning and accurate. Do NOT enable/disable while moving the winch. The engineer and winch operator should use a third independent depth system and notify each other if any discrepancy is found. Both are responsible for monitoring depth accuracy, stopping operations and resolving any depth discrepancy before proceeding. This double check is a team effort or “buddy system” used to prevent unintended incidents and should be used both running “in” and pulling “out” of the well. Examples of secondary depth control systems are: • Z-Chart • drum counter • flagging. At a minimum the Z-chart must be used.

4.4.6

Customer-Provided Equipment Before using equipment provided by the customer, Schlumberger personnel should ensure that it conforms to this Standard.

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

10

WL-QHSE-S03-WC / Implementation and Monitoring

4.4.7

10

Wellsite Setup It is important to position the logging unit and equipment so that it provides the winch operator with a clear line of sight for the entire operation. Because this is not always possible, the crew shall determine a setup that allows for both a safe and efficient operation. Standard winch hand signals shall be used as shown in section 5.7. In cases where no clear line of sight is available, risk mitigation procedures shall be in place. Location Management should decide where to use or not use remote video devices for rig up/down and winch operations. Such equipment, if used, shall be certified for the proper zone of operation. The wellsite setup should be one of the first tasks undertaken upon arrival at the wellsite. A working communication system and predefined hand signals are essential between the winch operator and crew. For land operations, the rig location is usually designed with a specific area at the end of the catwalk where the logging unit can be set. For proper and safe wellsite setup, regardless of operating conditions, three main steps shall be followed: 1. Align the truck. 2. Anchor the truck with proper Wireline wheel chocks or backup legs with consideration for both weather and surface conditions. 3. Apply the truck’s spring parking brakes. Refer to WL - Standard Wellsite Setup for Wireline Logging Trucks InTouch case ID: #4109800. On offshore rigs the logging unit sometimes needs to be placed in the most convenient location for drilling operations, not for logging operations. Clear cooperation and coordination with the offshore rig representatives is fundamental. Refer to Wireline Oilfield Units Reference Page InTouch case ID: #3264711 for wellsite setup instructions in Offshore Units, Modular Units, and so on. In cases where there is no typical setup and space is often at a premium (such as cased hole operations with wellhead equipment, production equipment, equipment from other service companies, pressure control equipment, etc.), it is important to coordinate the setup to maximize the view of the wellhead area while also allowing for an efficient operation. Account for things such as access for rigging up tools and pressure equipment; a place to safely prepare any explosive services; a clear line from the winch unit to the wellhead; and so on. It

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

11

WL-QHSE-S03-WC / Implementation and Monitoring

11

is usually very difficult to change the setup once the operation is started. The crew needs to make sure that the setup is correct from the start so that the safety of people and equipment are not compromised in any way.

4.4.8

Winch Tension Limiting System (TLS) The TLS reduces the maximum hydraulic pressure that can be developed by the winch system. The pressure, in turn, limits the maximum tension that can be developed by the winch system. The tension limiter is not capable of allowing free-wheel; however, when set at its minimum value, it permits the cable to be pulled from the drum by an external force (such as a shop winch or during TLC operations). Nonetheless, if the TLS is adjusted to a pressure less than that required to move the tools uphole, the tools will begin to drop. Increasing the limiter settings will restore the pressure necessary to maintain control over the hanging load. The TLS shall be used during the following operations: • spooling cable in the shop • TLC operations • rig-up/rig-down • POOH as an additional pull-off prevention method • remote radio winch control operation. All Schlumberger units need to have a working TLS. Specific instructions for using the TLS on each system can be found in the specific logging manual and InTouch Best Practices. Refer to Units Manuals or the Wireline Oilfield Units Reference Page InTouch case ID: #3264711 for instructions on how to use the TLS system on each type of logging unit.

Note TLSs are not just for use during TLC operations. They are to be used with all Wireline cable spooling operations. 4.4.9

Wellsite Operations Running In the Hole (RIH) When the engineer is prepared and all systems are ready to go, the winch man can proceed in the well. Be sure to take the following precautions: 1. Do NOT exceed cable speed guidelines.

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

12

WL-QHSE-S03-WC / Implementation and Monitoring

12

2. Disable the TLS once the rig-up is finished. 3. Make sure the tension is increasing as you go into the well. 4. Adjust the Tension alarms regularly. Keep the lower alarm slightly below the observed tension while running in the well. Low tension alarm should be set to 0.67 (OH) or 0.8 (CH) times the static tension. An triggered tension alarm is indicative of speed too high for current conditions. Low tension shut down stops the which should the tool bridge and tool weight is lost. Set low tension shut down to 0.67 (OH) or 0.8 (CH) × [static tension weight of tool in mud]. 5. The engineer should monitor the down log to verify that the tools are moving. 6. Well conditions will determine the appropriate speed (for example, slow down in any tight zone, deviation kickoff point, or doglegs). 7. Use the Z-Chart to record the depth and tension at each flange break. 8. The winch operator should devote 100% attention to winch operation. It is not appropriate to take on any other duties while operating the winch. 9. Visually monitor the physical setup (CMTD, IDW, sheaves, etc.) and ensure that all control systems remain operational. 10. Use the TLS during TLC jobs while running in the hole with the drilling pipe after the cable side entry sub (CSES) has been fully installed. Downhole Operations/Logging 1. Refer to the Recommended Cable Speeds Guidelines placard (Figure 5-1) for general operations or follow the guidelines for the specific tools or services that you are running. 2. Tension alarms/shutdowns should be set based on cable speed recommendations and well conditions, but normally shutdown should be no grated that 500 lbs above normal tension (100 - 200 lbs for cased hole operations). The winch alarms and shutdown settings require continual adjustment. High tension alarm should be set to 1.3 (OH) or 1.2 (CH) times the static tension. A triggered tension alarm is indicative of speed too high for current conditions. Set the High tension shut down to about 500 lbs (OH) or 200 lbs (CH) above HTA. The winch alarms and shutdown settings require continual adjustment. Only if speed has been brought down, the HTS can be set to MSP (see section ).

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

13

WL-QHSE-S03-WC / Implementation and Monitoring

13

3. An alarm/shutdown should never be set above the MSP or 50% cable strength or maximum tension limitations for the specific logging unit. 4. Continue to update the Z-Chart and cross-check depth systems. 5. Periodically check tension readings (especially prior to reaching TD) and compare to expected values. 6. Do not stop in open hole for long periods if possible. Keep the cable moving to prevent differential sticking. 7. The TLS can be used to prevent an unintentional pull-off once the uphole operation is begun (i.e., logging up has started). 8. Once again, verify system status and functionality. Pulling Out Of the Hole (POOH) • Once the downhole operation has been completed, the winch operator and engineer should confirm that any calipers, probes, or assemblies in the toolstring have been retracted prior to increasing the winch speed when starting to POOH. Follow the cable speed guidelines and regularly cross-check the depth against the IDW and cable position at the drum flanges (Z-chart). • Monitor and adjust the tension shutdowns/alarms (and tension limiter) as you proceed out of the hole. Keep the values close to the normal cable tension and below the maximum safe pull at the current depth. Remain alert for restrictions, changes in the well profile, or other areas that require a reduction in cable speed. The winch alarms and shutdown settings require continuous adjustment. • Stop the winch between 100 m (300 ft) and 70 m (200 ft) from surface or sea floor when POOH and apply the brakes. The crew should use this time to review the rig-down plan. The engineer should coordinate crew positioning and assign duties for winch operation, removal of the pack-off or line wiper, and the bump-up procedure inside the WHE, if applicable. Do not move the winch until all explosives, radioactive, and wellhead equipment procedures have been discussed and are understood. • Make sure the TLS (shutdowns/alarms) is properly adjusted to prevent an unintentional pull at surface and during rig-down. • It may be necessary for a different crew member to take over the winch operations to bring the tool to surface. Be certain that the depth and tension alarms are set properly for surface operations before releasing the brakes to start moving the winch. Keep the winch speed below 2,000 ft/hr or as described in Winch Speed Guidelines, Section 4.4.3 of this Standard. Recommendations for setting rig-up/down high tension alarms are as follows:

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

14

WL-QHSE-S03-WC / Implementation and Monitoring

14

HTS = 50% LWPR (or 50% of cable SWL if using ECRD) + weight of tool in air HTA = weight of tool in air, or 50% LWPR whichever is lower (or 50% of cable SWL if using ECRD) TLS should be enabled.

Bypassing the shutdowns or alert systems is forbidden (except in rare emergency situations or in TLC operations). Moving the cable up and down in stuck situations is discouraged. Follow operating guidelines for further details. Guidelines for operating during a stuck tool condition are found in Appendix 5.2, and guidelines for bump-up procedures are found in Appendix 5.3. The best way to estimate static tension is to use Tool Planner: (Tup + Tdown)/2. As a second option, the user can measure regular up and down tensions over the same interval at a speed as low as possible, then estimate the static tension as the average between tension up and down. In this case take the tension measurements over a long interval (more than 15 ft of tool movement) and check that the tension is steady and correlates to well conditions, estimates, and previous measurements.

4.4.10

Logging Operations Under High Tension In any logging job where the Tool Planner or other indicators suggest that the logging surface tension maximum safe pull will exceed 8,000 lbf, the Wireline High Tension Standard (WL-QHSE-S11-HT) must be followed. A HARC shall be prepared to identify and mitigate all risks associated with these operations.

4.4.11

Winch Control During Fishing Operations Wireline Pipe Recovery and Fishing Operations need to have a special risk assessment (InTouch case #3297069) performed by the crew. Refer to the Wireline Fishing Standard (WL-QHSE-S09-FISH) for specific details on these operations.

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

15

WL-QHSE-S03-WC / Implementation and Monitoring

4.4.12

15

Winch Control During TLC Operations Wireline TLC Operations have special requirements and limitations. Refer to the TLCS-HA and TLCS-SA/AC Operations Reference Manuals for specific details on these operations - (TLCS-HA - Intouch Content ID 3797385, section 5.3, and TLCS-SA/AC - Intouch Content ID 4220980, sections 6.3 and 6.4)

4.4.13

Shop Winch It is essential to have a properly set up and equipped cable maintenance yard in order to provide proper maintenance on wireline cable. Cable Maintenance Shop Set Up guidelines are available at InTouch case # 3291969. Locations shall only use Cable Shop Spooling Units approved by Schlumberger. These units can be found at IPC – Wireline Logging Common Surface Equipment web site. Inspections shall be carried according to Section 4.4.14 Inspections, Tests and Maintenance of this Standard. A HARC analysis for the operation of any shop spooling system shall be prepared to identify and mitigate all associated risks. This includes cable spooling operations performed in conjunction with third-party companies. If an exception is required, follow the guidelines provided at InTouch case # 4118945.

4.4.14

Inspections, Tests and Maintenance All equipment required for the winch operation should be inspected at least once per quarter. Also, it needs to be tested and maintained according to the specific equipment maintenance manuals and/or RITE File Code Catalog: • The prescribed maintenance events are defined by the product centers. • The maintenance is carried out by the location and shall be documented. • InTouch provides the necessary technological support.

The winch control equipment requiring maintenance/inspection includes (but is not limited to) the following:

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

16

WL-QHSE-S03-WC / Implementation and Monitoring

16

• Weakpoint or Release Device • Rope Socket • Cable • Rig-Up Equipment • CMTD and IDW • WDR (Cable Drum) • Winch Drive (chain and sprocket) • Winch Transmission (including base plate) • Winch Brakes (properly adjusted) • Unit (connection to rig or truck tire chocks). In addition, all control systems must be functionally tested before conducting any job: depth, cable speed, cable tension, TLS, winch brakes, brake bands or pads adjusted, visible/audible alerts, and communications systems. Inspections are a critical tool and detailed land and offshore winch unit inspection templates can be obtained in the Wireline Operations Management System Audit Package (InTouch case # 3281343). The focus of all inspections and audits is, of course, the closure of the resulting action items to ensure compliance.

4.4.15

Performance Monitoring Key performance Indicators (KPIs) allow management to quantify and monitor compliance with this Standard and performance at the location. For winch control, the KPI is UPO per 10,000 jobs. The World Wide Service Quality Plan (WWQP) indicates that every GeoMarket should have in place a Service Quality plan that includes a KPI target for UPOs. Wireline Headquarters uses the KPI data along with details of UPO incident reviews (shared through InTouch) to guide this Standard, set new WWQP objectives, and as input into new winch control product design and development.

4.4.16

Training and Qualification Training for winch operations should be completed through the PEPTEC, XPERT, or GlobalTOPS programs. Documentation of completed training is maintained in the LMS.

Private Copyright © 2009 Schlumberger, Unpublished Work. All rights reserved.

IPC InTouch-Wireline\Stephen Hinson, Juan Real Paredes\WL-QHSE-S03-WC (InTouch ID 4137706)\1.19\Release Date:10-Dec-2009\EDMS UID: 1648247838\Produced: 10-Dec-2009 22:18:55

17

WL-QHSE-S03-WC / Appendices

17

In order to operate the winch during an operation, the employee shall be Safe Winch Operations 1 Certified. This is also documented in the LMS. Pull-off prevention training shall be completed by all crew members participating in winch operations within the previous 12 months. This is documented in the LMS.

5

Appendices Three procedures are described in the appendices section: • recommended cable speed guidelines • stuck tool procedures • bump-up procedures.

5.1

5.1.1

Recommended Cable Speed Guidelines (ALC Operations Manual) Minimum Operating Requirements Depth 0 to 300 ft

Running In

Pulling Out