Extreme Frac Plug

Copperhead® Extreme Frac Plug M-967 Operating Instructions

ES20.40301F

Table of Contents Section 1 ......................................................................................................................... 1 1.0 General Description ................................................................................... 1 1.1 Application ...................................................................................... 1 1.2 Features and Benefits ..................................................................... 1 Table 1-1 Availability ....................................................................... 2 Table 1-2 Dissolvable Ball ............................................................... 2 Section 2 ......................................................................................................................... 3 2.0 Pre-job Planning and Preparation .............................................................. 3 2.1 Assembly & Maintenance Verification ............................................. 3 2.2 Pre-run Checklist............................................................................. 3 2.3 Storage Requirements/Transportation ............................................ 4 Section 3 ......................................................................................................................... 5 3.0 Operating Procedure.................................................................................. 5 3.1 Setting on Wireline .......................................................................... 5 3.2 Setting on Tubing ............................................................................ 7 3.3 Dropping Frac Ball .......................................................................... 9 3.4 Milling ............................................................................................ 10 Table 3-1 Mill Types ...................................................................... 10 Table 3-2 Recommended Motor Parameters ................................ 10 Table 3-3 Milling Parameters on Coiled Tubing ............................ 11 Table 3-4 Milling Parameters on Joint Tubing ............................... 12 Table 3-5 Mill Types for Turbo Drill ............................................... 12 Table 3-6 Recommended Turbo Drill Parameters ......................... 13 Table 3-7 Milling Parameters with Turbo Drill ............................... 13 Section 4 ....................................................................................................................... 14 4.0 Specifications........................................................................................... 14 Table 4-1 Dimensional Data .......................................................... 14 Section 5 ....................................................................................................................... 15 5.0 Troubleshooting Guide............................................................................. 15 5.1 Non-conformance.......................................................................... 15 Section 6 ....................................................................................................................... 16 6.0 Parts List .................................................................................................. 16 The last page of this engineering specification is 16.

ES20.40301F Confidential Property of Schlumberger

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Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 1 1.0

General Description The Copperhead® Extreme Frac Plug is a drillable permanent plug that allows hydraulic fracturing above while allowing flowback from below. The use of innovative materials and technologies provides optimum pressure containment and excellent drill out properties. 1.1

Application The Copperhead® Extreme Frac Plug is run in the hole and set on wireline to isolate the lower perforations so an upper zone can be perforated and fractured. The Copperhead ® Extreme Frac Plug can then be easily drilled out using coiled tubing and a Copperhead® mill assembly. Several zones in one well can be isolated with multiple Copperhead Frac Plugs. Each zone may then be stimulated separately, and the Copperhead® Extreme Frac Plug drilled out in one trip.

1.2

Features and Benefits 

Short, compact design minimizes drill out time



Mills up quickly without spinning due to interlocked parts



Easy to remove lightweight cuttings



Plug ends provide a rotational lock during drill up of multiple plugs

P.O. Box 60068 HOUSTON, TX 77205 This drawing and data embody proprietary information which is the confidential property of Schlumberger and which shall not be copied, reproduced, disclosed to others, or used in whole or in part for any purpose, without the written permission of Schlumberger. This drawing is loaned in confidence with the understanding that it shall be returned on demand.

DATE:

Jul 16, 2013

DRAWN:

P Shkurti

APRVD:

G Melenyzer

INDEX ES20

F

GR-98104

Jul 16, 2013

Operating Instructions

G Melenyzer

E

GR-96203

May 28, 2013

K Zhang

D

GR-94740

Apr 23, 2013

C Cromer

C

GR-92888

Feb 25, 2013

C Cromer

B

GR-87380

Sep 07, 2012

C Cromer

REV

ECO

DATE

BY

Revision bar in margin indicates latest revision level. 1 of 16

Copperhead® Extreme Frac Plug M-967

SPEC. NO. ES20.40301

Section 1

General Description



High quality pack-off provided by proprietary element system



Hardened cast iron wicker slips for secure set in even high yield casing



Wireline or hydraulic setting system ensures reliable and flexible deployment

Plug Size in. (mm)

Casing Size in. (mm)

4.50 (114.3)

4.50 (114.3)

5.00 (127.0)

5.00 (127.0)

Casing Weight lb/ft (kg/m)

Max O.D. in. (mm)

15.10 (22.47) 16.6 – 17.00 (24.70 – 25.30)

3.440 (87.34)

18.00 – 21.40 (26.78 – 31.84)

3.875 (98.43)

23.20 – 24.20 (34.52 – 36.01

3.770 (95.76)

Table 1-1 Availability Pressure Rating Temperature Above & Rating Below °F psi (°C) (KPa)

Plug Assembly Number

WLAK Assembly Number

13,000 (89,630) M-967-44-000

15,000 (103,420)

400 (205)

M-555-20-440 M-967-51-000 M-967-50-000

Table 1-2 Dissolvable Ball Plug Size (in.) (mm)

Casing Size (in.) (mm)

4.50 (114.3)

4.50 (114.3)

5.00 (127.0)

5.00 (127.0)

Casing Weight (lb/ft) (kg/m) 15.10 (22.47) 16.6 – 17.00 (24.70 – 25.30)

*Standard Plug Assembly Number

Ball Dia (in.) (mm)

**Dissolvable Ball Part Number

M-967-44-000

18.00 – 21.40 (26.78 – 31.84)

M-967-51-000

23.20 – 24.20 (34.52 – 36.01

M-967-50-000

1.000 (25.4)

80027011-1000

Note: Dissolvable Ball pressure and Temperature rating is same as shown in Table 1-1

*Note: Standard Plug Assembly will come with Phenolic Ball. **Note: Dissolvable Balls need to be ordered separately.

ES20.40301F Confidential Property of Schlumberger

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Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 2 2.0

Pre-job Planning and Preparation Pre-job planning and preparation is vital to the successful deployment of the Copperhead® Extreme Frac Plug. 2.1

Assembly & Maintenance Verification Capture the assembly configuration of each tool before shipping to the job; such as, serial number and tool O.D. Check for any visible damage. Refer to the latest revision of the Copperhead® Extreme Frac Plug service manual, ES21.40300, for general assembly and assembly inspection. Inspect the Copperhead® Extreme Frac Plug before the job. 

Make sure first element back-up rings, and element barrier ring petals are not damaged, cracked or deformed.



Verify the slip wicker profile orientation.



Check for any missing, cracked, or jammed slip wicker.



Check the bottom sub alignment. The axis of the tabs in the bottom sub should be aligned with the axis of lead of the bottom slip pad. Make sure that the brass sheer screw in the bottom sub is tightened in place with Loctite 271.

Do not use the plug if any discrepancies are found during inspection. Contact Technical Services for further instructions. 2.2

Pre-run Checklist Prior to running the equipment, perform the pre-run checklist: 

Review and evaluate job objectives with an on-site customer representative.



Verify that all necessary equipment has been delivered to the location.



Check and verify tool joint connections.

ES20.40301F Confidential Property of Schlumberger

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Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 2

2.3

Pre-job Planning and Preparation



Inspect all equipment for possible damage during shipment before use. Inform the customer immediately of shortages or damage.



Caliper the frac plug and record all measurements.

Storage Requirements/Transportation The following should be adhered to when storing and transporting: 

The Copperhead® Extreme Frac Plug should be stored in a dry place in the shipped tube away from moisture and rain.



Handle with care while transporting.



When transporting, keep plugs in a dry or covered place to avoid contact with moisture.

ES20.40301F Confidential Property of Schlumberger

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Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 3 3.0

Operating Procedure 3.1

Setting on Wireline a) Prior to running the Copperhead® Extreme Frac Plug, the well should be gauged using the appropriate gauge ring and junk basket. This will clean the hole of debris and ensure the passage of the bridge plug. b) Inspect for debris inside the junk basket after running. If debris is found, continue running the junk basket until it is found clean. A standard wireline pressure setting assembly can be connected to the Copperhead® Extreme Frac Plug through wireline adapter kit. See manual ES20.39976 for more information on the wireline adapter kit.

***

ONLY SLOW BURN CHARGES SHOULD BE USED WHEN SETTING THE COPPERHEAD® EXTREME FRAC PLUGS. RECOMMENDED BURN TIME IS 20-40 SECONDS.

c) Assemble the setting sleeve, the plug and the tool as per instructions.  Tighten the Copperhead® Extreme Frac Plug setting sleeve onto the setting tool.  Screw the adapter mandrel into the Copperhead® Extreme Frac Plug firmly hand tighten.  Guide the plug and adapter mandrel into the setting sleeve and into the setting tool Rotate clockwise until the mandrel threads are fully engaged. *** DO NOT USE A PIPE WRENCH WHEN TIGHTENING THE ADAPTER MANDREL AND PLUG INTO THE SETTING TOOL. FIRMLY HAND TIGHTENED IS SUFFICIENT.

d) Carefully move the plug assembly up into the derrick or lubricator. Use cautious when lifting the equipment and confirm assembly will pass through the surface equipment without damages. Start it into the well. *** AVOID ALLOWING WEIGHT OF THE TOOL STRING TO BE PUT DIRECTLY AS THE PLUG.

 Note: it is recommended to drift the surface equipment prior to running in hole.  Note: a drift run is recommended to the setting depth if possible. ES20.40301F Confidential Property of Schlumberger

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Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 3

Operating Procedure

e) Run in hole to depth while monitoring weight on string and eventual fluid return or any unexpected pressure increase. Make sure not to impact any liner tops while running in the hole with the bridge plug. Run through liner top at 100 ft/min maximum speed. If there is a low fluid level, slow down when entering the fluid. In the vertical section, running speed should be 300-500 ft/min. In horizontal section, running speed should be 200-300 ft/min. Pumping plug down with fluid will be required in horizontal section. Care should be taking not to exceed allowable line tension during pump down procedure. f) When the setting depth is reached set the plug and retrieve the setting assembly.

ES20.40301F Confidential Property of Schlumberger

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Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 3

3.2

Operating Procedure

Setting on Tubing A gauge run is recommended prior to running in hole to avoid potential hazard and eventual pre-set while hitting some debris or a restriction in the well. It is critical to monitor at all time the weight while running on coil tubing as load generated against a restriction are higher than with wireline. Every so often (to be defined with the operator) it is recommended as a best practice to record the pickup and slack off weight when running in hole. The Hydraulic Setting Tool is connected to the frac plug through a setting sleeve identical as the setting sleeve for the wireline setting tool. a) Assemble the setting sleeve, the plug and the tool as per instructions.  Tighten the Copperhead® Extreme Frac Plug setting sleeve onto the setting tool.  Screw the adapter mandrel into the Copperhead® Extreme Frac Plug firmly hand tighten.  Guide the plug and adapter mandrel into the setting sleeve and into the setting tool Rotate clockwise until the mandrel threads are fully engaged.

*** DO NOT USE A PIPE WRENCH WHEN TIGHTENING THE ADAPTER MANDREL AND PLUG INTO THE SETTING TOOL. FIRMLY HAND TIGHTENED IS SUFFICIENT.

b) Use cautious when lifting the equipment and confirm all will go through the surface equipment without damages.  Note: it is recommended to drift the surface equipment prior to running in hole.  Note: a drift run is recommended to the setting depth if possible. *** AVOID ALLOWING WEIGHT OF THE TOOL STRING TO BE PUT DIRECTLY AS THE PLUG.

c) Run in hole to depth while monitoring weight on string and eventual fluid return or any unexpected pressure increase. Running speeds should not exceed 100 ft/min in vertical or 80ft/min in horizontal. d) On depth, drop the setting ball through the string. 

ES20.40301F Confidential Property of Schlumberger

Note: Depending on the pump and the length of spooled coil, it may be necessary to increase pressure behind the ball before launching 7 of 16

Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 3

Operating Procedure

(500-1000 psi) in order just to get over the gooseneck (injector).It is possible that if this is not done the ball will stay in the coils and create a false indication of HST failure since ball will not seat after volume displacement e) The ball can then be either pumped to bottom or not depending on deviation. The ball is made of light material or from brass and will only free fall inside fluid to about 60 degrees deviation, after that it will required to be pumped at 2 bbl/min.  Note: If required to pump the ball, it is important to note the total displacement and avoid pumping at more than 1 bbl/min to land on the seat as to avoid excessive pressure increase. f) Once the ball lands the pressure will increase in the coil tubing. g) Increase pressure to 200-300 PSI and monitor the pressure for1 minute. h) Increase pressure more to open the by-pass (equalization/pressure drop in CT can be seen). i) Slowly increase the pressure to the maximum pressure (depending on plug) and monitor the weight on the coil tubing. It is also possible to apply tension to limit maximum pressure in the string. j) At the maximum pressure the shear ring between the plug and the running tool will shear, sometimes it is required to increase the pressure slightly above calculated value (up to 500 PSI). k) Once the shear ring is sheared, there should be sudden pressure drop indicating that the piston is fully stroked. l) Then pull the string 15 to 30 ft (5 to 10 m) while maintaining pressure in the string. Proceed then with a pressure test of the plug (pressure to be defined depending on plug specifications, well data and coil tubing surface equipment). m) Pull out of hole. 

Note: Tagging the plug after setting is not recommended, as it can create damage to the end of the setting assembly.

Review the operating manual for the Smith Hydraulic Setting Tool (ES20.40053) or the Schlumberger Model E Hydraulic Setting Tool for more details.

ES20.40301F Confidential Property of Schlumberger

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Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 3

3.3

Operating Procedure

Dropping Frac Ball Dropping the Frac Ball is only required when the ball has been removed from the caged position.

a) Once the plug is set and perforations are made POOH with setting equipment. b) Insert the frac ball in tubing and begin pumping 0–2 bbl/min in the vertical. Once the ball reaches horizontal then pump 5–15 bbl/min. c) When the frac ball is 1-2 min above the plug, slow pump rate to 5–6 bbl/min to land ball. d) Once the ball is landed, well fracturing can proceed.

ES20.40301F Confidential Property of Schlumberger

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Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 3

3.4

Operating Procedure

Milling 3.4.1 Mill Type A specifically designed six bladed carbide mill is recommended for plug removal (see Table 3-1). This mill provides a very short milling time and a smooth milling operation. The mill design is field proven and presents a long service time with optimum milling capabilities. A conventional concave junk mill or drill bit may also be used, but a greatly extended milling time is expected. Table 3-1 Mill Types Mill Max Tool O.D. O.D. in. In. Part Number (mm) (mm)

Plug Casing Size Size in. in. (mm) (mm)

Casing Weight lb/ft (kg/m)

4.50 4.50 (114.3) (114.3)

15.10 – 17.00 (22.47 – 25.30)

3.440 (87.38)

M-960-35-100

3.50 (88.90)

18.00 – 21.40 (26.78 – 31.84)

3.875 (98.43)

M-960-39-000

3.875 2.375 PAC PIN UP (98.43)

23.20 – 24.20 (34.52 – 36.01)

3.770 (95.76)

M-960-37-000

3.75 (95.25)

5.00 5.00 (127.0) (127.0)

Connection

3.4.2 Motor Type The motor should be capable of producing adequate RPM and torque at the specified flow rate for the appropriate casing size (see Table 3-2). A good example of this is the Schlumberger SmithDril motor. Table 3-2 Recommended Motor Parameters Plug Size in. (mm) 4.50 (114.3) 5.00 (127.0)

ES20.40301F Confidential Property of Schlumberger

Flow Rate BPM (L/min)

Motor Type

1.5 – 3 SmithDril (240 – 480)

Torque ft-lb, (Nm)

Size in. (mm)

RPM

2.875 (73.03)

208 – 415

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Max (with H20 at 70°F)

Stall

475 (645)

715 (970)

Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 3

Operating Procedure

3.4.3 Milling Parameters on Coil Tubing The Copperhead Extreme Frac Plug should mill up efficiently using a motor of the above characteristics, and an appropriate weight on bit range (see chart below). Higher weights can be used if required, up to the stall limit of the motor being used. At contact with the top plug, pick up off bottom and begin circulating with an appropriate flow rate. Slowly contact plug with minimum weight on bit (WOB) and monitor circulating pressure. Both the WOB and circulating rate can be adjusted as required to establish the best penetration. Table 3-3 Milling Parameters on Coiled Tubing WOB Plug Size lb in. (daN) (mm) Min Optimum Max 4.50 (114.3) 5.00 (127.0)

1000 (445)

1500 (667.5)

2000 (890)

Flow Rate BPM (L/min) 2–3 (320 – 480)

3.4.4 Milling Parameter on Jointed Tubing The Copperhead Frac Plug should be milled efficiently using a power swivel able of producing sufficient rpm and a pump unit capable of producing a sufficient flow rate (see chart below). The optimum weight on bit (as shown below) is required for the appropriate casing size. A higher weight on bit may be required, if milling with air foam or nitrogen foam. Start milling by having the minimum WOB on the mill. Monitor all milling parameters in the process. Then gradually increase to an optimum level and adjust the weight accordingly. Apply sweeps when penetration is reduced. Run a back pressure sub directly above the mill in order to control the flow back and to keep cuttings from entering the tubing cavity when milling or adding tubing while using nitrogen. The rest of the milling procedure is similar to the milling parameters on coil tubing.

ES20.40301F Confidential Property of Schlumberger

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Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 3

Operating Procedure

Table 3-4 Milling Parameters on Joint Tubing WOB Plug Size lb in. RPM (daN) (mm) Min Optimum 4.50 (114.3) 5.00 (127.0)

65 – 85

1000 (445)

2000 (890)

Max 4000 (1780)

Flow Rate BPM (L/min) 2–3 (320 – 480)

3.4.5 Milling Sequence The Copperhead Extreme Frac Plug is designed to be milled up very efficiently with no parts spinning. For multiple plug applications, cuttings may be present from the previously milled plug. Sweeps may be required at this stage to circulate the cuttings that tend to interfere with the milling operations. Milling Tip: If penetration rate decreases, sweep to clear away any cuttings that may interfere with the milling operation

3.4.6 Milling with Turbodrill 3.4.6.1 Mill Types

A specifically designed six bladed carbide mill is recommended for plug removal (see Table 3-5). This mill provides a longer gage to provide protection to the mill while RIH with the higher speeds produced by the Turbodrill verses the PDM. Table 3-5 Mill Types for Turbo Drill Plug Casing Size Size in. in. (mm) (mm)

ES20.40301F Confidential Property of Schlumberger

Casing Weight lb/ft (kg/m)

Mill Max Tool O.D. O.D. in. Part Number in. (mm) (mm)

4.50 4.50 15.10 – 17.00 (114.3) (114.3) (22.47 – 25.30)

3.440 (87.34)

30019025

3.50 (88.90)

18.00 – 21.40 (26.78 - 31.84) 5.00 5.00 (127.0) (127.0) 23.20 – 24.20 (34.52 – 35.86)

3.875 (98.43)

80003633

3.875 (98.43)

3.770 (95.76)

80003633

3.75 (95.25)

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Connection

2.375 PAC BOX

Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 3

Operating Procedure

3.4.6.2 Mill Parameters with Turbodrill

The Turbodrill operates differently than a PDM, well conditions such as temperature and pressure fluid weight have an effect on the output parameters of the tool. It is highly recommended that the Turbodrill hydraulics be run prior to and during the job to ensure maximum efficiency of the run. Pumping Nitrogen does not have any detrimental effect on the tool as is it all metallic. The tool can be RIH/POOH without pumping fluid, but when milling operations are carried out it is recommended to pump sufficient fluid to operate the Turbodrill to its maximum efficiency. Table 3-6 Recommended Turbo Drill Parameters Plug Size in. (mm) 4.50 (114.3) 5.00 (127.0)

Flow Rate GPM (L/min)

Motor Type

95 – 130 NEYRFOR TTT (360 – 490)

Size in. (mm)

RPM

Horsepower Max (with H20)

2.875 (73.03)

2100 – 2900

34 – 86

Table 3-7 Milling Parameters with Turbo Drill WOB Plug Size lb in. (daN) (mm) Min Optimum Max 4.50 (114.3) 5.00 (127.0)

ES20.40301F Confidential Property of Schlumberger

500 (225)

1000 (445)

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2000 (890)

Flow Rate GPM (L/min) 105 (400)

Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 4 4.0

Specifications

A

A B C D

Table 4-1 Dimensional Data Plug Size

4.50 (114.3)

5.00 (127.0)

Casing Size in. (mm)

4.50 (114.3)

5.00 (127.0)

Casing Weight lb/ft (kg/m)

15.10 – 17.00 (22.47 – 25.30)

18.00 – 21.40 (26.79 – 31.85)

23.20 – 24.20 (34.53 – 36.01)

Assembly Number

M-967-44-000

M-967-51-000

M-967-50-000

Dimensions in. (mm)

ES20.40301F Confidential Property of Schlumberger

A

3.440 (87.4)

3.875 (98.4)

3.770 (95.8)

B

10.92 (264.2)

11.25 (270.8)

10.72 (257.8)

C

17.64 (461.3)

17.64 (463.0)

16.99 (445.5)

D

27.79 (705.9)

28.32 (719.3)

27.14 (689.4)

Plug ID

0.56

0.63

0.63

Ball Size

1.000

1.000

1.000

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Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 5 5.0

Troubleshooting Guide 5.1

Non-conformance Re-service a Copperhead Extreme Frac Plug according to the Service Manual ES21.40300 if any of the following has occurred: 

Retrieval of plug after contacting wellbore fluid



Damage to plug components during transportation or handling



Contact with moisture

Only qualified SCHLUMBERGER personnel are authorized for inspecting and re-servicing.

ES20.40301F Confidential Property of Schlumberger

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Copperhead® Extreme Frac Plug M-967 Operating Instructions

Section 6 6.0

Parts List Refer ES21.40300 latest revision for part list details.

ES20.40301F Confidential Property of Schlumberger

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Copperhead® Extreme Frac Plug M-967 Operating Instructions

P.O. Box 60068 • Houston, Texas 77205-0068 U.S. and Canada: 800-877-6484 Tel: 281-443-3370 • Fax: 281-233-5121 www.slb.com ©2010 Schlumberger All Rights Reserved