Basic Fishing Advisory Brochure

Fishing― Operational & Safety Tips Schlumberger Wireline Basic Fishing Advisory Brochure

Wireline Fishing Safety Placard

At the Shop:

1. Review

logging program, the toolstrings to be run, and the order of logging descents.

2. Model logging tensions w

ith ToolPlanner softw

are and Stickance m

odel, calculate and select preferred w

eakpoint and estimate m

aximum

safe pulls.3. O

btain drillpipe parameters - top and bottom

connections, inner diameter, crossovers, or subs (pum

p-in, circulating, TIW

-valves).4. O

btain Wellbore inform

ation - hole size, casing sizes, direction, deviation, and expected conditions (fluid type, last circulation)5. P

lan for auxiliary equipment such as cable, w

eakpoint, stand-offs, bowsprings, tool turners, as w

ell as rig-up equipm

ent according to expected tensions, expected wellbore conditions, and rig capabilities.

6. Ensure proper operation, accuracy, and calibration of tension devices, tension panel, m

easuring wheels,

and related equipment.

7. Inspect Fishing Kits for necessary parts, proper drillpipe connections, full functionality, load-tests,

certifications, and documentation.

8. Identify and/or review fishing resources – Fishing R

eference Page w

ith Best P

ractices/Lessons Learned, Fishing M

anuals, Equipm

ent Guidelines, and Fishing S

tandards and Guidelines.

9. Review

fishing experience, training, and/or proficiency of crew.

Arrival at the W

ellsite:10. Inspect the site and the rig to determ

ine hazardous areas, equipment arrival and condition, fishing kit,

and basic rig-up needs.11. R

eview possible fishing needs for this w

ellsite such as cranes, hoists, top-drive, and drillpipe parameters.

10. Meet w

ith client to review logging program

, well/rig inform

ation (pipe connections?), general safety precautions, and inform

them of fishing equipm

ent at site or readily available. 11. P

erform basic job safety analysis / H

azard Analysis &

Risk C

ontrol (HA

RC

) and conduct safety meeting.

12. Consider the placem

ent and quantity of centralizers, flex joints, swivel adapter heads, hole finders,

stand-offs, etc., taking into account hole conditions and the characteristics of the tool string. D

O N

OT place stand-offs too high on the toolstring.

Allow

enough room to engage the tool w

ith a fishing overshot.13. M

easure and record exact dimensions of the toolstring, bridle, torpedo, and head. The nature of the tool

must be specified so that proper precautions w

ill be exercised to recover the tool without dam

age.14. O

btain or confirm inform

ation on the well environm

ent – well sketch w

ith depths, deviations and doglegs; perm

eable, lost-circulation, unconsolidated, or gassy formations; m

ud or drillpipe problems.

Running in the H

ole:15. O

bserve and record tension readings for tool weights in air, in fluid near surface, and periodically w

hile going in the hole. 16. Follow

Safe W

inch Operations guidelines.

17. Run In H

ole with proper tension on cable and stop periodically to determ

ine “static” tension.18. A

pproach casing shoes, tight spots, changes in direction or deviations with caution.

DO

NO

T stop moving in open hole.

DO

NO

T spud with the tool.

DO

NO

T put too much slack or sit on bottom

.

First Indications of Sticking:19. A

s tension builds up, indicating keyseating or the tool is sticking, but not stuck, keep moving up w

ithin safe cable tension lim

its.20. C

lose any calipers and determine type of sticking (keyseat, tool stuck, bridging)

a. If tool is stuck – apply maxim

um safe tension prom

ptly and hold constant.

i. DO

NO

T EXCEED

THE SA

FE WO

RK

ING

LOA

D O

F THE W

IRELIN

E CA

BLE O

R 75%

OF TH

E LOW

ER W

EAK

POIN

T RA

TING

.

ii. Inform client and location m

anager. b. If keyseated or bridging – stop the w

inch and attempt to low

er the tool.

i. Check tension device reading for “norm

al” free tool cable tension (cable w

t. + tool wt. In m

ud + friction of cable and tool)

ii. DO

NO

T EXCEED

THE SA

FE WO

RK

ING

LOA

D O

F THE W

IRELIN

E CA

BLE O

R

75% O

F THE LO

WER

WEA

KPO

INT R

ATIN

G.

iii. Inform

client and location manager.

DO

NO

T pull free from the tool.

DO

NO

T cycle cable.D

O N

OT exceed 50%

of the new cable rating.

DO

NO

T break the cable.

Fishing Operations w

hen Stuck:21. P

rovide the client with com

plete information, experience, and risks of each fishing m

ethod and determine

the Clients choice of m

ethod for fishing: a. C

ut & Thread – preferred m

ethod for deep open hole (>3000 ft) or shallow open hole w

ith poor hole conditions. b. R

everse Cut &

Thread – use when w

eakpoint cannot safely be broken, positive engagement

cannot be confirmed, the grapple is clogged or blocked, or cable m

ust remain attached until

reaching casing or surface. c. S

ide-Door O

vershot – shallow open hole (<3000 ft) w

ith good hole conditions. d. Freeing at the W

eakpoint – cased hole; except for deep holes where cable m

ay break before w

eakpoint. 22. P

erform a H

AR

C for specific fishing operations and take necessary safety precautions.

a. No substandard link in the upper sheave support, the tension device, the sheaves, or the low

er sheave tie-dow

n. b. The upper sheave m

ust be installed by the rig crew by properly attaching to the w

ater table beams.

c. Securely anchor truck or unit, if not already done.

d. Keep the rotary table covered w

henever possible.

DO

NO

T allow non-essential personnel on rig floor or near cable w

hile tension is above normal.

DO

NO

T use a sling without proper certifications and inspection.

23. Conduct a pre-job safety and operational m

eeting to review dangers, fishing procedures, duration of

repetitive, mundane operations, and the need to be constantly alert.

24. Refer to appropriate m

aterials and manuals for full fishing docum

entation, operational procedures and risks.25. W

hen fishing for stuck tools with R

adioactive Sources: a. The C

lient and Schlum

berger should make reasonable efforts to recover the sealed source.

b. The Client and S

chlumberger should take precautions to avoid rupturing or dam

aging the source. c. S

chlumberger w

ill consult with The C

lient regarding the fishing operation, but the Client retains

full responsibility for the fishing operation. d. The R

adiation Safety section in the safety chapter of the W

RM

contains instructions for the procedure w

hen the stuck tool includes a radioactive source. e. A

dditional material is available in the R

adioactive Sources and C

ontrols manual.

f. It is vital that all Schlum

berger personnel are familiar w

ith existing radiation hazards and recom

mended procedures.

g. Report im

mediately to M

anagement, InTouch and if applicable, your G

eoMarket H

otline if the follow

ing occurs: i. The C

lient initiates a fishing procedure that is contrary to Schlum

berger’s advice for protecting the source. ii. A fishing operation has broken the logging tool string. iii. The source capsule is in danger of being dam

aged by the use of drilling, milling, or w

ashover equipm

ent for retrieval or by rotating the drillpipe.

iv. The source is not recovered on the first fishing attempt.

v. A

bandonment of the source seem

s likely.

vi. Mud returns show

an increase in radioactivity.

1. The field engineer or specialist m

ust monitor m

ud returns at all times just

prior to engaging the fish and during critical parts of the fishing procedure.

2. If m

ud returns show an increase in radioactivity, a ruptured source m

ay be

indicated. The follow

ing procedures are required:

a. Stop the m

ud flow and continue to m

onitor radiation levels in the mud pit.

b. D

emand that fishing operations be halted im

mediately.

c. A

dvise client that the rig should be shut down and prepared for possible

evacuation.

d. Survey the area around the w

ellhead, etc. to determine extent of contam

ination.

e. Survey all personnel in area for possible exposures.

26. During R

etrieval of Toolstring with R

adioactive Sources the field engineer or specialist must alw

ays be concerned w

ith minim

izing the radiation exposure to all parties. From the tim

e a retrieved source is brought to the surface until it is returned to its shield, personnel exposure m

ust be controlled.

Follow safe practices outlined in the R

adiation Safety section of the WR

M

and the Radioactive Sources and C

ontrols manual.

Yes Yes

Cable Stuck Tool Stuck

No

Con

tinue

Logg

ing

If free

No

No

Close caliper, slack to Tn - 500 lbsand monitor HTEN to see if tool is

moving down; free?

Yes

Move down at least 1% of depth and pull back to Tn +1000 lbs

Is the tool free?

No

Yes

If free

Do not pull off toolscontaining RA sources

PULL MAX

Build Rope Sockets andInstall LWF Adapters

Client to decide on fishingmethod (Cut and Thread,

pull out of WP, LWF)

Cut and Thread if in open hole and/or radioactive sources involved

LWF or FISHING JOB

Convert to LWF

Con

tinue

Log

ging

-

MAX SAFE PULL

Pull maximum safe pull and HOLDActivate wireline jars if available;

Pull maximum safe pull and HOLD

Inform client and SLB management Prepare crew for fishing job

Determine whether cable or tool stuck(Monitor HTEN)


Close caliper, slack to Tn - 500 lbsand monitor HTEN to confirm

tool is free/moving down.

Pull up to Tn+2000 lbs. Determine cable stuck point using the stretch

method; Depth=Stretch/(coeff * 2000).

DO NOT exceed the Max Safe Pull.

Close caliper. Slack cable slowlyback to Tn + 1000 lbs. Open/close

caliper - confirm tool is free.

Potential Accidents or Hazards Attempting to use slick-line or free-point “bicycle wheels” on the top drive.

Cable slipping through T-bar.

Objects falling from derrick during upper sheave installation.

Swivel or spearheads break at surface; danger to surrounding personnel.

Overshot slipping through air hoist line; falling on or pinning personnel.

Pulling fishing assembly into the upper sheave.

Working beneath overshot/pipe assembly when removing T-bar.

Spearhead/spearhead overshot unthreading and coming apart. Spearhead overshot falls past the spearhead, landing on the feet of personnel on the drill floor.Spearhead overshot pins a hand or fingers between it and the spearhead.

Wireline or weight assembly catches on top drive, breaking cable or swivel.

High tension on cable.

Moving sheave wheels.

Pinch points while stabbing spearhead overshot.

Getting hit by moving drill pipe.

Wireline getting cut with rotating drill pipe while making up joint.

Broken weakpoint assembly going through the upper sheave.

Exposure to radiation or explosives when rigging down tools.

1

2

3

4

5

6

7

8

Tighten bolts 80 to 85 ft-lbsin the following sequence.

Both distances should be equalwhen tightening bolts.

Logging cable

At the first indication of sticking, the Engineer must immediately put into action the plan to get free. This plan should already have been formulated from the essential information determined prior to descent. By using the available resources and by following the flowchart below, the decision tree on what actions to take will be greatly simplified.

Ensure a reduction in the weakpoint rating due to downhole temperature is made. It should be deratedby approximately 4% per 100 degF, above 75 degF (extracted from Heads MM, InTouch #3012542).

200 degF5.4%

300 degF9.5%

400 degF13.7%

500 degF16.4%

600 degF20.4%

Temperature Reduction

Cable type: _________________ Breaking strength: _________________ 50% of cable breaking strength: _________________75% of LWPR (Lower Weak Point Rating): _________________ Wtm (Tool Weight in Mud): _________________ Tn (Normal Tension Prior to Being Stuck): _________________ HTEN (Head tension Prior to Being Stuck): _________________ MAXIMUM SAFE PULL = 75% LWPR + Tn - Wtm: _________________

DO NOT EXCEED 50% OF THE CABLE BREAKING STRENGTH

ESSENTIAL INFORMATION

Tips for Safe Job Procedures

Mark cable.Test T-bar for cable slip (Fig A).Minimize personnel on rig floor. Routinely tighten and inspect connections.Keep hands and feet clear of pipe(Fig B).Proceed cautiously near Top Drive.Do not pull wire rope sinker bar assembly into sheave (Fig C).Stay clear of lower sheave wheel.Properly position self and others.Use “No-Go” hardware .Stay clear of wireline with tension.Ensure clear communications.Ensure visibility and line of sight.

Additional Information available @ Fishing Reference Page (InTouch 3876112)

AVOID THIS SITUATION !!!


Flexible wire ropesinker bar assemblygoing over the sheave.

Fig C

WL Fishing Manual (4172213)7DH022/Feb07

Refer to WL-QHSE S09 (InTouch 4138014)

100403913 Rev AA Feb 2007

Markat top

Mark atbottom

Fig A Fig B

Wat

ch fo

r ch

ang

e in

g

ap a

t to

p a

nd

bo

tto

m

First Signs of Sticking and Becoming Stuck Fishing Operations Checklist ― Basic Steps(Refer to the Wireline Fishing Manual for Complete Procedure)

Fishing Operations Overview

Additional Information available @ Fishing Reference Page (InTouch 3876112)For Detailed Operational Procedures Refer to WL Fishing manual (InTouch 4172213)For Detailed Operational Procedures Refer to WL Fishing Manual (InTouch 4172213)

If You Think You Are Stuck

When tools are stuck, attempting to pull free can result in accidental pull-offs and broken damaged/weakened cables. If procedures are not carefully followed, cables (especially new ones), will be damaged by the sudden changes in tension from pulling up and slacking off too quickly. Similarly, be aware that some weakpoints have failed prematurely when inappropriate practices have been performed in an attempt to free stuck toolstrings. Correct application of the maximum tension is very important. Therefore, it is best to determine the normal and reference tensions during normal operation, before stuck!

Once confirmation of being stuck has been made, the two most common options shown below have typically been followed. The first approach is recommended as being the safest set of actions to follow. The second approach is not recommended by Schlumberger, although it may likely be the most common request from the client’s wellsiterepresentative.

Holding Maximum Tension

1. Once it is recognized that the toolstring is stuck, pull maximum tension and set the brake. Do not exceed the safe working load (SWL) of the wireline logging cable, or 75% of the lower weak point rating at the head.

2. If the client is not aware of your situation, immediately inform the client and explain your plan. 3. Continue to monitor the tension while the brake is set and close all calipers. Be prepared to sit and monitor tension for at

least an hour.4. Although the initial inspection is performed at the shop or upon arrival, once again, confirm that the fishing kit is complete. Pay

close attention to the required grapple sizes for fishing the stuck toolstring and the drillpipe thread sizes of subs required for your job or upon arrival.

5. Over a period of time (different for every situation), the tension may decrease by 200 lbs to 300 lbs. If this occurs, pull backto maximum tension and re-apply the brakes. Doing this several times is not uncommon during the wait period.

6. If the toolstring remains stuck after the wait (usually a few hours), discuss tool retrieval options with client and initiate the most appropriate method.

The Cyclic Method

NOT RECOMMENDED - avoid this method at all costs. It is well known to cause torque imbalance issues and result in cable failure. Utilize only upon client demand, and only after the appropriate advisory of the likelihood for the cable to partwell below its nominal rating.

1. Upon becoming stuck, determine the reference tension.RReeffeerreennccee TTeennssiioonn == mmoovviinngg tteennssiioonn –– ttooooll wweeiigghhtt iinn fflluuiidd –– ttooooll ddrraaggIn deviated wells, the surface tension includes a large amount of drag due to both cable and tool.

2. Pull 50% of the lower weakpoint rating above this Reference Tension without exceeding the Safe Working Load (SWL) of the wireline cable.

3. Wait 5 seconds.4. If not free, close calipers and slack off SLOWLY (1000 ft/hr) to the previous tension before becoming stuck.5. Pull back to 50% of the lower weak point rating. 6. Wait 10 seconds. 7. If not free, reduce tension SLOWLY to Reference Tension less 100 lbs. 8. Check sensors and weight for tool movement. If no movement is apparent, pull SLOWLY to 55% of lower weakpoint rating

above reference tension. 9. Wait 10 seconds. 10. If the tool is still stuck, SLOWLY slack off to reference tension less 100 lbs. 11. Repeat the process in increments of 5% until 75% of the lowerweak point rating or the cable SWL is reached (whichever is

the lower value).

*** DOs & DON’Ts of FISHING ***

During “Cut and Thread” FISHING OPERATIONS, THERE ARE CERTAIN THINGS THAT SHOULD NOT BE DONE OR PERFORMED UNDER ANY CIRCUMSTANCES. EVEN AT THE REQUEST OF THE CLIENT. DO NOT ENTERTAIN THESE IDEAS BECAUSE THEY COULD CAUSE INJURY TO PERSONNEL OR CAUSE THE JOB TO END IN FAILURE.

Do NOT allow Flexible Wire Rope Sinkers to pass over the upper sheave. This has resulted in complete assemblies falling to the floor from great heights with associated potential for fatalities.

Inverted T-Bar: Installing the T-bar upside down should never be attempted. The position is not intrinsically stable - it falls over and the cable parts just above the clamp. Instead, it should be rested on the C-plate. Review equipment section of the Fishing Manual for correct T-bar installation procedure.

Grapple Installation: Ensure that a new grapple and grapple control of the proper size is installed correctly in the downhole overshot assembly.

Avoid the use of “Bicycle Wheels” or “S-pipes” in Top-Drive setups.

Cutting cable under tension: Personnel must never attempt to cut a cable under tension; severe injury or fatality may result.

Under-rated and unapproved equipment: Using equipment not approved for fishing is not permitted.

Equipment dimensions: Always know the smallest inside diameters of both the drillpipe and the casing string upon arrival to the rig. Without knowing this information, certain fishing equipment may be prevented from passing.

Circulating subs: Do NOT run the circulating sub into the well. If lowered into the well, its presence will prevent rope socket hardware from returning to surface after WP breakage.

Heavy-Weight or Slim Drillpipe: The use of heavyweight drillpipe can introduce restrictions which prevent successful passage of rope or socket assemblies and spearheads when required.

Safety Guards: After cable drum changes, ALWAYS reinstall both logging unit drum guards to prevent injury to personnel.

No-Go: If a fishing operation is being performed with SFT-651 or some other small pipe fishing equipment, a No-Go for catching dropped hardware will not be available.

Never attempt to fish wireline with wireline.

Cut and Thread TechniqueThis is Schlumberger‘s method of choice for stuck toolstring retrieval.

Operational Requirements● It is the Field Engineer’s responsibility to act as a proactive advisor during the fishing operation. Good communications and record keeping with all involved are critical. Be aware that a number of fishing companies offer some of the same equipment found in SFT-644, SFT-651 and SFT-709. Do not leave or abandon the operation just because they have been called. Your alertness, experience, expertise and suggestions may lead to a more successful recovery of the tool.● An experienced winch operator It is desirable and occasionally necessary to have a man available to help with signals and/or help with cable movement.● Schlumberger personnel or the fishing specialist should stay on the rig floor to observe the operation until satisfied with alignment, equipment, safety concerns, etc. ● Periodic checks are also suggested especially when a new rig crew takes over. ● Descriptions of all fishing assemblies and BHAs going into the well for recovery should be known. All assemblies, estimated lengths of cable and other retrieved items from the well should be documented.

Reverse Cut and Thread Fishing TechniqueThe Reverse Cut and Thread technique is a subsequent method for retrieving stuck wireline toolstrings. When this procedure is performed, the wireline cable remains connected to the tools after engagement but may be later disconnected at some predetermined depth or at the rig floor.

USE THIS TECHNIQUE:● If the weakpoint cannot be safely broken due to deviation, doglegs or cable strength. ● If requested to keep the cable attached to the toolstring until it reaches the casing shoe or surface.● If it is suspected that the rubber boot on top of a bridle is wedged inside the grapple. ● If positive tool engagement cannot be confirmed.

Fishing Operations: Standard EquipmentSFT-644 – Certified fishing kit rated for 20,000 lbs.2-1/8-in O.D. Rope Socket Kit4-11/16-in O.D. Overshot Kit Optional: 1-11/16-in O.D. Rope Socket Kit

SFT-651 – Certified small pipe fishing kit rated for 8,000 lbs.1-3/8-in O.D. Rope Socket Kit3-3/8-in O.D. Overshot KitOptional: 1-11/16-in O.D. Rope Socket Kit

Refer to WL Equipment Guidelines (InTouch 4217158)

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

Inspect Fishing Kit.

Maximize distance between drillpipe and top-drive

(use long bails/links if available).

Apply tension of +1000 lbs over cable buoyant weight.

Install T-bar; check for cable slippage.

Lower elevators and cut cable.

Relocate upper sheave to the derrick.

Wireline crew builds rope sockets.

Install and test spearhead with spearhead overshot

assemblies.

Assemble downhole overshot; thread spearhead

overshot assembly.

Pick up downhole overshot.

Spool up spearhead overshot assembly to

derrickman, feed through pipe, and lower to floor.

Connect spearhead overshot to spearhead (inspect,

tighten and test connections frequently).

Apply tension to wireline and remove T-bar.

Lower pipe into hole and place C-plate under the

spearhead.

Slack off and disengage spearhead overshot from

spearhead.

Flag cable at drum when spearhead overshot

reaches derrickman.

Flag cable again when spearhead overshot reaches

bottom of pipe.

Proceed cautiously until BHA is in the hole.

Trip DP into hole; inspect the wireline every 10 stands.

Install circulating sub 1 to 2 stands above expected

top of fish.

Circulate to clean grapple and downhole overshot.

Remove circulating assembly and continue in hole

until tension increases.

Confirm fish engagement by:

● increasing and slacking off wireline tension

● picking up drillpipe (reduction in cable tension)

● circulating and comparing pump pressure.

Rupture the drain sub disc with pump pressure.

With fish in overshot, install T-bar under spearhead

at surface.

Break weakpoint with T-bar in elevators; do not

exceed cable SWL.

Install second T-bar at drillpipe and set on a C-plate.

Lay out spearhead/overshot asemblies and cut cable.

Tie loose ends together with a square knot.

Spool slowly and observe the knot tightening.

Tension should not exceed 25% of ends-fixed break

strength. Two T-bars may be required to bring knot

back to winch.

Remove T-bar and carefully spool knot over sheaves

to drum; remove IDW/CMTD and spool knot onto drum.

Reinstall IDW/CMTD and reset depth including cable

footage cut out.

Near surface, slow down and pull out of hole and

tie-off wireline.

Ensure FE is on the rig floor w/ top of fish at 200 ft

and POOH with DP.

With tools at surface, install make-up plate

immediately below overshot and disconnect tools.

Rig down remainder of tool.

Disconnect downhole overshot from drillpipe and

remove tools or send back to base.

Untie the wireline, cut the rope socket, clear rig floor,

and pull cable over the top sheave by hand.

Spool up the cable with the winch.

Fishing― Operational & Safety Tips Schlumberger Wireline Basic Fishing Advisory Brochure

Wireline Fishing Safety Placard

At the Shop:

1. Review

logging program, the toolstrings to be run, and the order of logging descents.

2. Model logging tensions w

ith ToolPlanner softw

are and Stickance m

odel, calculate and select preferred w

eakpoint and estimate m

aximum

safe pulls.3. O

btain drillpipe parameters - top and bottom

connections, inner diameter, crossovers, or subs (pum

p-in, circulating, TIW

-valves).4. O

btain Wellbore inform

ation - hole size, casing sizes, direction, deviation, and expected conditions (fluid type, last circulation)5. P






easuring wheels,





eference Page w

ith Best P


anuals, Equipm



9. Review


Arrival at the W






10. Meet w


, well/rig inform





azard Analysis &

Risk C

ontrol (HA

RC





O N


Allow






age.14. O







Running in the H

ole:15. O



Safe W


17. Run In H




DO

NO


DO

NO


DO

NO


.




its.20. C





i. DO

NO

T EXCEED

THE SA

FE WO

RK

ING

LOA

D O

F THE W

IRELIN

E CA

BLE O

R 75%

OF TH

E LOW

ER W

EAK

POIN

T RA

TING

.




er the tool.



t. + tool wt. In m


ii. DO

NO

T EXCEED

THE SA

FE WO

RK

ING

LOA

D O

F THE W

IRELIN

E CA

BLE O

R

75% O

F THE LO

WER

WEA

KPO

INT R

ATIN

G.

iii. Inform


DO

NO


DO

NO

T cycle cable.D

O N

OT exceed 50%


DO

NO

T break the cable.


hen Stuck:21. P



ethod and determine






everse Cut &






ide-Door O




ay break before w

eakpoint. 22. P

erform a H

AR



er sheave tie-dow



ater table beams.



henever possible.

DO

NO



DO

NO










lient and Schlum


b. The Client and S



chlumberger w





RM





ontrols manual.




mended procedures.

g. Report im

mediately to M


eoMarket H






ashover equipm



v. A


s likely.




ust monitor m



2. If m


ay be



a. Stop the m



b. D


mediately.

c. A


evacuation.



ination.


26. During R



ays be concerned w

ith minim



ust be controlled.



M


ontrols manual.

Yes Yes


No

Con

tinue

Logg

ing

If free

No

No


moving down; free?

Yes


Is the tool free?

No

Yes

If free


PULL MAX





LWF or FISHING JOB

Convert to LWF

Con

tinue

Log

ging

-

MAX SAFE PULL





























1

2

3

4

5

6

7

8



Logging cable



200 degF5.4%

300 degF9.5%

400 degF13.7%

500 degF16.4%

600 degF20.4%











Fig C



100403913 Rev AA Feb 2007

Markat top

Mark atbottom

Fig A Fig B

Wat

ch fo

r ch

ang

e in

g

ap a

t to

p a

nd

bo

tto

m














The Cyclic Method






the lower value).






















1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.










assemblies.


overshot assembly.








spearhead.


spearhead.


reaches derrickman.


bottom of pipe.




top of fish.










at surface.


exceed cable SWL.







back to winch.




footage cut out.


tie-off wireline.


and POOH with DP.






















The Cyclic Method






the lower value).






















1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.










assemblies.


overshot assembly.








spearhead.


spearhead.


reaches derrickman.


bottom of pipe.




top of fish.










at surface.


exceed cable SWL.







back to winch.




footage cut out.


tie-off wireline.


and POOH with DP.









Fishing― Operational & Safety Tips Schlumberger Wireline Basic Fishing Advisory BrochureW

ireline Fishing Safety PlacardA

t the Shop:1. R

eview logging program

, the toolstrings to be run, and the order of logging descents.2. M

odel logging tensions with ToolP

lanner software and S

tickance model, calculate and select preferred

weakpoint and estim

ate maxim

um safe pulls.

3. Obtain drillpipe param

eters - top and bottom connections, inner diam

eter, crossovers, or subs (pump-in,

circulating, TIW-valves).

4. Obtain W

ellbore information - hole size, casing sizes, direction, deviation, and expected conditions (fluid

type, last circulation)5. P






easuring wheels,





eference Page w

ith Best P


anuals, Equipm



9. Review


Arrival at the W






10. Meet w


, well/rig inform





azard Analysis &

Risk C

ontrol (HA

RC





O N


Allow






age.14. O







Running in the H

ole:15. O



Safe W


17. Run In H




DO

NO


DO

NO


DO

NO


.




its.20. C





i. DO

NO

T EXCEED

THE SA

FE WO

RK

ING

LOA

D O

F THE W

IRELIN

E CA

BLE O

R 75%

OF TH

E LOW

ER W

EAK

POIN

T RA

TING

.




er the tool.



t. + tool wt. In m


ii. DO

NO

T EXCEED

THE SA

FE WO

RK

ING

LOA

D O

F THE W

IRELIN

E CA

BLE O

R

75% O

F THE LO

WER

WEA

KPO

INT R

ATIN

G.

iii. Inform


DO

NO


DO

NO

T cycle cable.D

O N

OT exceed 50%


DO

NO

T break the cable.


hen Stuck:21. P



ethod and determine






everse Cut &






ide-Door O




ay break before w

eakpoint. 22. P

erform a H

AR



er sheave tie-dow



ater table beams.



henever possible.

DO

NO



DO

NO










lient and Schlum


b. The Client and S



chlumberger w





RM





ontrols manual.




mended procedures.

g. Report im

mediately to M


eoMarket H






ashover equipm



v. A


s likely.




ust monitor m



2. If m


ay be



a. Stop the m



b. D


mediately.

c. A


evacuation.



ination.


26. During R



ays be concerned w

ith minim



ust be controlled.



M


ontrols manual.

Yes Yes


No

Con

tinue

Logg

ing

If free

No

No


moving down; free?

Yes


Is the tool free?

No

Yes

If free


PULL MAX





LWF or FISHING JOB

Convert to LWF

Con

tinue

Log

ging

-

MAX SAFE PULL





























1

2

3

4

5

6

7

8



Logging cable



200 degF5.4%

300 degF9.5%

400 degF13.7%

500 degF16.4%

600 degF20.4%











Fig C



100403913 Rev AA Feb 2007

Markat top

Mark atbottom

Fig A Fig B

Wat

ch fo

r ch

ang

e in

g

ap a

t to

p a

nd

bo

tto

m

Documents

Basic Fishing Advisory Brochure