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Introduction

• Share our experiences

• Learn from each other

• Understand tools/ applications

• Match tools/ application to needs

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Great Expectations

• Practical suggestions for problem solving

• Sales ideas

• What’s new

• Overview - Grounding

• Networking

• Get feedback

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The class is designed to look at the big picture of which techniques, concepts and principles have worked in the past to solve customers problems

The name of the class is “ Weatherford’s Best Practices in Fishing Technology”

What the class is not !

This is not a class to learn how to re-dress tools

There will not be a lot of hands on training

What the class is !

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Ground Rules

• Be on time

• Be respectful ( diversified cats )

• Participate

• Share equal air time

• No cell phones, please

• Have fun

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W.I.I.F.M.

• Pride of achievement

• Develop customer base

• Increased job security

• Pay raises/Promotion/Travel

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Formula for success

• Mentor

• Visualization skills

• Communication skills

• Behave authentically with integrity

• Enjoy what you do

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Model for Success

• Pair of Hands Role

• Collaborative Role

• Expert Role

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Coordinator Engineer

Company ManFisherman

ONE WAY - LIMITED OPTIONS

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Pair-of-Hands Role

• Fisherman is dependent on Co. Man to isolate the problem and form action plan

• Fisherman / passive role / expertise wasted

• If Co. Man’s diagnosis if wrong, the action plan won’t work

• Fisherman becomes a convenient scapegoat

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Coordinator Engineer

Company ManFisherman

RELATIONSHIP/PARTNERSHIP MULTIPLE OPTIONS

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Collaborative Role

• Hook fisherman’s expertise to Co. Man’s knowledge of how the customer operates

• Problem solving becomes a joint undertaking

• Communication is two way

• Collaboration is considered essential

• Decision making is bilateral

• Responsibility for success or failure is shared

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Expert Role

• Trying to solve a problem for 3 days, calls a Weatherford expert

• I have done all I can, you’re the expert

• Find out what’s wrong and fix it

• Free hand to do whatever you want

• Keep me posted on what you intend to do

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Engineer

Go-to-Guy/Expert SalesProfessional

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TEAM WORK

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Thought for Today

None of us is as smart as all of us.

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• Globalization, demographics and new technology are the driving forces for change

• This opens the door for consolidation and widely dispersed operations

• A growing emphasis on speed, flexibility and innovation is required

• How will these forces impact your job?

Winds of Change

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Systemic Systems

• Si-stem-ik - each part effects the whole

• We work in a system where individual patterns of behavior effect everyone else in the company.

• Training and human resource development is key to insuring this system links individual performance to organizational goals. *

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Agenda• Job planning/ record keeping

• Fishing for Junk

• Pipe recovery methods

• Open hole fishing

• Drilling fluids

• Fishing for Parted Pipe

• Cased hole fishing

• Jarring/Jar placement

• Hydro-Pro/BHA drawing

• Casing repair

• Wireline fishing

• Reversing Tool

• Trip saver bushing

• Multi-string cutting

• M.O.S.T. tool

• W.O.B.O. tool

• Drill collar spear

• Sub sea casing patch

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Quiz

• Gain knowledge of training needs

• Another at the end of classes

• All questions will be discussed

• Take one idea home

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Today’s Agenda

• Job planning; Record Keeping

• Fishing for Junk

• Pipe recovery methods

• Open hole fishing

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Successful fishing jobs start with:

• Excellent job planning

• Meticulous record keeping

Proper preparation ensures that most options are planned for and that equipment, personnel and other assets are available when needed.

Job Planning/ Record Keeping

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Job Planning

Collect information/specific job

• Do your homework thoroughly

• Formulate a game plan

• Present options to customer*

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Non Planned Fishing Jobs True, real time fishing is not planned.

When an unexpected problem arises, immediate help from a fishing expert is required.

Such jobs would include:

• bit cones in hole • a twisted off drill string • stuck pipe

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How Observant Are WeFeature films are the result of years of

scientific study combined with the experience of years.

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Tubular Goods

Drilling and Well Installation Steps

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•Prevents erosion of the hole around the base of the rig•Protects the subsequent casing from corrosion•May be used to support some of the Wellhead load

Conductor Pipe

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Surface Casing•Protects the well from cave-in•Prevents freshwater sand from contamination.

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Intermediate Casing

•Seals off weak zones.•Seals off older production zones.•Protects against lost of circulation.

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Production Casing

•In general is the last string.•Protects Tubing strings and others tools.

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Liner•Hangs off the last string.•Can be run in a shorter amount of time.•Same function as the Intermediate Casing.

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Tubing

•Transmission of fluids or gases to the surface.•Removed from the wellbore as necessary.

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Opportunities!• Well installation services

• Casing handling equipment

• Automatic fill up system (Lafleur Autoseal)

• Cementation products

• Well logging services

• Drilling equipment rentals (DP, DC, Stab.)

• Well control equipment ( BOP’s )

• Directional drilling services

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Opportunities• Electric wireline services

• Underbalanced drilling services

• Liners and liner hanging services

• Casing exit, Whipstock’s, Multi-laterals

• Casing repair, internal/external patches

• Tubulars, Packers, inflatable screens, artificial lift services, TT services etc.

• P@A services, slot recovery, MOST tool

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• Size, weight and depth of all casings?

• Hole size, angle and depth?

• Size/ connections work string drill collars?

• What is the fish ?

• Jars in the hole and are they working ?

• Operations at time of incident ?

Ask the Important Questions

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Fish in Hole

1. 7-7/8 Rock Bit with 4-1/2 Reg. Pin .70

2. Mud Motor x 6-1/2” x 2-7/8 x 4-1/2

Reg. double box 20.50

3. 4-1/2 X.H. box x 4-1/2 Reg. Pin sub 1.89

4. Pony drill collar x 6-1/4 x 3.oo x 4-1/2 X.H. 10.63

5. 6-1/4 x 7-7/8 stabilizer x 4-1/2 X.H. x 2-3/8 I.D. F.N.=1.10 4.55

6. Float Subx 6-1/4 x 2-3/8 I.D. 2.23

7. M/S subx 6-1/4 x 2-3/8 x 4-1/2 X.H. 2.65

8. M.W.D. x 6-1/2 x 2-7/8 x 4-1/2 X.H. 31.10

9. Monel drill collar x 6-1/2 x 2-1/2 x 4-1/2 X.H. 30.70

10. 9 x drill collars x 6-1/4 2-3/4 x 4-1/2 X.H. 272.08

378.92

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Cardinal Rules of Fishing

1. Know your dimensions:

• O.D., I.D., length of fish.

• O.D., I.D., length of fishing assembly.

• O.D., I.D., length of the work string.

• Know where the top of the fish is.

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2. Know all tensile and torsional

3. Never rotate the fish out of the hole.

4. Fast trip time is not always the best.

5. Must be OD fishable.

Cardinal Rules of Fishing

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6. Familiarize yourself with the fish.

• Make use of the composite catalog

• Technical manuals

• Manufacturers drawings

• Have an exact replica of the fish

Cardinal Rules of Fishing

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Maximum O.D. of Tools That Can be Washed Over Casing Size Maximum Wash Pipe to Cover

O.D. I.D. Wt. O.D. O.D. I.D. Wt.

4-1/2 3.754 16.60 2-3/4 3-1/2 2.955 9.20

4-1/2 3.920 13.50 3-1/16 3-3/4 3.250 9.50

5 4.276 18.00 3-1/4 4 3.428 11.60

5-1/2 4.670 23.00 3-1/2 4-3/8 3.749 13.58

5-1/2 4.778 20.00 3-5/8 4-1/2 3.826 16.60 6 5.240 23.00 4-1/8 5 4.276 18.00

6-5/8 5.791 28.00 4-5/8 5-1/2 4.892 17.00

7 6.004 35.00 4-3/4 5-3/4 4.990 22.50 7 6.276 26.00 5-1/8 6 5.325 20.00

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7-5.8 6.625 39.00 5-3/8 6-3/8 5.625 24.00

8-5/8 7.511 49.00 6 7 6.276 26.00

8-5/8 7.825 36.00 6-3/8 7-3/8 6.625 29.00

8-5/8 8.017 28.00 6-5/8 7-5/8 6.875 29.70

9-5/8 8.535 53.50 6-7/8 8-1/8 7.185 39.50

9-5/8 8.835 40.00 7-3/8 8-3/8 7.625 35.00 10-3/4 9.760 55.50 7-7/8 9 8.150 40.00

10-3/4 9.950 45.50 8-3/8 9-5/8 8.681 47.00

13-3/8 All WTS. 10-5/8 11=3/4 10.88 54.00

16 All WTS. 12 13=38 12.415 68.00

Minimum Size Casing Maximum Tools to Run Wash Pipe to Cover With

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Arriving on Location

• Introduce yourself to Co. man

• Verify all pertinate information

• Record BHA/ pipe in hole/driller

• Count all work string on location

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• Tie off any pipe in derrick

• Clean out V door, mark first joint

• On first trip out, strap out of hole

• Verify pipe count/ top of the fish

Arriving on Location

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Accurate Top of Fish

• Stay with these numbers

• Use In/out method, check mistakes

• Ask Drillers to notify you if they pick up or lay down any pipe

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In and Out MethodOut In

D.O.K. 23.65 Shoe 4.60 B.H.A. 311.35 3 Jts. WP 95.96 1Std. D.P. 94.00 Sfty. Jt. 2.75Total out 429.00 Jars 6.90Total In 411.66 X-over 1.45Diff. &Dok 17.34 Tools 111.66 10 D.C. 300.00 B.H.A. 411.66 19 Std. DP 1786.00 2197.66 D.O.K. 17.34 T.O.F. 2215.00

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In and Out Method

• To change from overshot to washpipe string

• Tally length of string, plus kelly to TOF

• Compute laid out length including DOK

• Subtract picked up from laid down

• The difference is DOK with new string

• Total out must exceed total up to use this formula.

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K.B. Measurements

• The Standard Oilfield Measurement to any depth down hole is recorded from ground level, plus the distance to the kelly bushing[KB] on the rig that drilled the well.

• This is called the original elevation and is recorded in the well file.

• If a workover rig is later employed , the difference in this rigs elevation from the original one must be accounted for.

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• The difference in elevation is added to or subtracted from the current pipe tally in order to correlate with the original well elevation.

• This can be of great importance in some cases.

KB Measurements

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• Example: Original elevation is 30.

• Current elevation is 6.

• The difference of 24 must be added to

the current pipe tally so that

downhole depths will correlate.

KB Measurements

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Official Well Depth

Well depth = hole depth plus elevation

Where:

• hole depth = ground level to TD

• elevation = ground level to KB

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Tally Book Rules

• Accurate, legible & current

• Time, date, trip/ job number• Brief description/each trip• Any accidents should be recorded• As if to pass on to relief man • Keep book for future reference

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Well Data

• Last casing: 8-5/8 x 28# @ 5611

• 7-7/8” HOLE: T D @ 9557’

• Bit stuck 74’ off bottom @ 9483’

• Angle of hole = 35%

• Wt.9.8#; Vis. 36 = WL= 20 YP = 10

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Window Milling

Depth R.P.M. S.P.M. W.O.B. Torque Time Minutes Feet

3284-85 88-116 65 1-2 1,000 00:15-01:00 45 1

86 116 65 3 12-18 01:30 30 2

87 116 65 4 11-15 01:45 15 3

88 116 65 4 12-16 01:55 10 4

89 116 65 4. 5 12-16 02:10 15 5

90 116 65 4. 5 12-14 02:25 15 6

91 116 65 4. 5 12-16 02:30 5 7

92 116 65 4. 5 10-18 02:33 3 8

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Example:Tally Book

5-3/4 od x 4-13/16 id: bu = 5.90 serial # w 8925 5-3/4 bos w/2-7/8 bas.Grap.& mcpo: 2.75

5-3/4 od x 4-3/4 id serial # w 2435 5-3/4 bos extension 3.10

FN .85 x 4-3/4 x 2-3/8 id serial # w 8925 3-1/2 if top sub x 5-3/4 os 1.10 4-3/4 od x 2 id serial # B 1461 4-3/4 bbj x 3-1/2 if conn. 9.90 4-3/4 x 3-1/8 id serial # B 124 4-3/4 boj x 3-1/2 if conn. 10.75

4-3/4 x 2-3/8 id rig Six x 4-3/4 drill collars x 3-1/2 if conn. 184.90

4-5/8 x 2-7/16 id serial # w 222 2-7/8 x 8rd. box x 3-1/2 if pin sub 1.50

BHA 214.00

rig 180 joints 2-7/8 x 8rd tubing 5625.00

5839.00

Down on single 11.00

TOF 5950.00

Trip# 1 @ 2:00 pm 2-4-98 Union Oil

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Oilfield abbreviationsR.P.M. - rounds per minute T.O.F. - top of fish

S.P.M. - strokes per minute M.D. - measured depth

W.O.B. - weight on bit T.V.D. - true vertical depth

B.H.A. - bottom hole assembly B.F. - buoyancy factor

W.O.C. - wait on cement D.P. - drill pipe

W.O.O. - wait on orders D.C. - drill collar

W.O.W. - wait on weather D.h - diameter of hole in inches

T.I.H. - trip in hole e - stretch in inches

P.O.H. - pull out hole P - over pull in pounds

G.L.M. - gallons per minute E.S.P. - estimated stuck point

A - annular velocity M.O.P. - margin of over pull

E.C.D. - equivalent circulation density N.P. - neutral point

F.V. - funnel viscosity O.P.T. - optimum

C.&C. - circulate and condition mud M.W. - mud weight in ppg

H.H.P. - hydraulic horsepower Lbs. - pounds

L.C. - loss circulation Len. - length in feet

L.C.D. - loss circulation material L.O.T. - leak off test

Y.P. - yield point B.O.P. - blow out preventor

W.L. - water loss S.L.M. - steel line measurement or strap in/out hole

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Days Qty. Tool Description & Report Serial # Est. Price

1 1 8-3/8 SOD x 7-1/4 SID Scallop R.Shoe 2965 $ 2010.00

1 14 Jts. 8-1/8 o.d. wash-pipe ( 434 ) Pearland $ 985.00

1 1 4-1/2 if x 8-1/8 wp pin canfield bushing 21047 $ 390.00

1 1 6-1/4 od Bowen Fishing Jar x 4-1/2 if 9202071 $ 1450.00

1 1 8-1/8 wash pipe slips 96777 $ 275.00

Days Qty. Tool Description & Report Serial # Est. Price

T.I.H. Tagged top of fish @ 6572. Got overT.O.F. and slacked off to the cement @ 6656.Started milling over fish @ noon. Milled overfish 12 hours from 6656 to 6710. Mill quite.

New Page for 03-16-99Circulate hole clean and start P.O.H. @ 2.00A.M.

SubTotal

PreviousTotal

$6402

$2895$9297

Example Job Report

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Actual Job Resume

Pick up shoe #1, 15 joints washpipe, W.O.B.O. tool, x-o, Jar, x-o and 9 D.C.’s.

O.D. of shoe? Safety joint and x-o sub on bottom of W.O.B.O. tool?

O.D. and footage of washpipe?

Connection on x-o subs?

O.D. and type of jar? O.D. of D.C.’s?

Handling tools? Nubbins, elevators, WP slips, safety clamp, lift sub for jars, bleeder plug for drill pipe?

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Example Resume6-1/8 rough OD x 4.4 SID rotary shoe #1 S.N. xxx $1500

15 joints[450] of 5 x-line washpipe 2500

5-3/8 OD W.O.B.O. tool with 5 x-line pin & 2-7/8 IF box and pi n connections. [per back-off] 1600 4-1/4 OD pin type safety joint with 2-7/8 IF conn.

350

2-7/8 IF box x 3-1/2 PH-6 pin sub 50

3-1/2 IF box x 2-7/8 IF pin sub 60

3-1/2 IF x 4-3/4 OD Bowen Oil Jars first day 1200

Nine 4-3/4 OD drill collars [ NC ]

Washpipe nubbins [ five ] 90

Washpipe elevators 150

Washpipe slips 150

Washpipe safety clamp 110

Bleeder plug for drill pipe 200

Daily Cost Est. $7960.00

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Drilling is impeded by junk in the hole

Junk will fit instandard junk

basket?No

Run Poor Boy Junk basket, Magnetor Junk Mill

Yes

FormationHardRun magnetor jet basket

Jet Basket Magnet

Run magnet

Run jet basket w/no float to 30 ft.above junk. Establish parameters

Wash down to top of junk whilecirculating volume of DP.

Drop ball and circulate down. Once ballhas seated, circulate at maximum

pressure and work basket down to TD.It is not necessary to cut core

TIH to 30 ft. above junk.Establish parameters

Wash down to junk while slowly rotating

Stop pumps and lower magnetto bottom then POOH.

POOHw/recovery

No

Yes

Run junkmilling

assembly

Job complete

POOHw/recovery

Run jet basket(no float)

Soft Run Globe,RCJB or jet

basket

Jet BasketRCJB

Run RCJB w/no float to 30 ft. abovejunk. Establish parameters.

Run Globe Basket withor w/out float.

Wash down to top of junk whilecirculating volume of DP.

TIH to 30 ft. above top ofjunk and establish

parameters

Dropball and circulate down. Once ball has beenseated, circulate at maximum pressure and work basket

down to TD. Cut core equal to head and barrel

While rotating lowerbasket down to junk andcut core equal to barrel

capacity

Yes

POOHW/Recovery

?No

Run junkmilling

assembly

Yes

POOHw/recovery

Yes

Yes

Job complete

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Information/ Short Term Needs

• Sales people are great help in recognizing an

opportunity[ planned work] and collecting

the right information

• This information with the help of a “go to

guy” can increases business dramatically

• Can push for a standby tool basket to cover

short term needs

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Standby Basket / Immediate Needs• Magnet to suit bit cone and holes sizes

• Mill and boot basket to suit hole sizes

• Reverse circulating or globe type junk basket

• Basic overshot with grapples to catch work string, collars, fishing neck on all down hole tools

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Junk in the Hole

• What is the junk? size, weight, condition?

• Is it magnetic?

• Will junk fit into standard junk basket?

• Is the junk millable?

• The choices are to pick it up or mill it up.

• May require a combination of tool runs.

Movie File (MPEG)

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Fishing Magnets

• All small objects with magnetic attraction

• Run on pipe; capability/rotate/ circulate

• Must wash fish; surface/ magnetic pole

• Run boot basket above for small junk

• Most, but not all tungsten carbide bit inserts are non-magnetic

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FISHINGMAGNET

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Complete Recommended Connection Maximum Bore Overall

Assembly Hole Sleeve Length

Number Size O.D. (in.) (in.)

471-000-4 4-1/8 x 4-1/2 2-3/8 Reg. 3 11/16 1 32

471-140 4 - 5/8 x 4- 7/8 2-7/8 Reg. 4 1 32-1/2

471-140 5 x 5-3/4 2-7/8 Reg. 4 1/2 1 32-1/2

471-145 5-7/8 x 6-3/8 3-1/2 Reg. 5 1 1/2 32-1/2

471-145 6-1/2 x 7-3/8 3-1/2 Reg. 5 1/2 1 1/2 32-1/2

471-150 7-1/2 x 8-1/8 4-1/2 Reg. 6 5/8 2 34

471-150 8-5/8 x 9-5/8 4-1/2 Reg. 7 2 34

471-160 9-5/8 x 11-3/8 6-5/8 Reg. 8 1/2 3 36

471-160 11-1/2 x 13 6-1/2 Reg 9 5/8 3 36

Weatherford Type P Boot Basket

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Boot Basket

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Fishing Magnets

• Adapters available to run on wireline

• Usually inside casing with clear fluid

• Prior to running, check charge, sledge hammer

• Will hold hammer, will hold junk

• OD magnet; 1/4 to 1 less/ hole size

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Procedure run Magnet

• TIH Stop approximately 30 from bottom

• Circulate and ream to bottom/ circulate all fill off fish

• Slack off a little while rotating a few rounds

• Don’t rotate excessively

• A magnet is not a drilling tool

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Operating Procedure

• Rotary will slap as guide rakes fish/ face

• Cut Lip/ cripple type guide best suited

• Set 2,000# to 3,000# weight on magnet

• Stop circulation, POH don’t rotate

• Guide prevent fish rubbing off while POH

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Bowen Itco Type Junk Basket

• Soft to medium formation

• Top sub,barrel, carbide shoe

• Two free rotating catchers

• Mill O D 1/4” less hole size

• Carbide I D same as catchers

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Operation:Core Basket

• Ream last 30’ to bottom

• Slow pump rate & RPM

• Watch torque as junk rolls in

• Increase weight 2- 4,000 Lbs.

• Cut core: stop circulation/ rotary

• Pick up to break core

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Core Type Basket • If no junk recovery is made, but a good core

is recovered, normal drilling may be

resumed.

• Because it cannot produce any reverse

circulating , the globe type basket is used

primarily in open hole.

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Reverse Circulating

Junk Basket• Circulate capacity of string

• Check ID’s/ insure ball will pass

• Drop ball: shear pins: reverse

• Not necessary to cut core

• Hyd. power deflects junk/barrel

• Preferred tool for hard formation

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Weatherford Venturi Jet Basket The tool consists of a :

• top sub

• a jetting assembly

• a barrel

• assembly with finger catchers

• a rotary shoe

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The Jetting Assembly

The jetting assembly is contained in the top sub and consists of :

• an ejector pump head

• four jets

• a flushing nozzle

• a valve seat

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Jetting Function Operation

•The action of actuating the valve and pumping mud through the jets produces a vacuum, sucking mud from the inside of the barrel

• Mud deficiency in the barrel will be replenished by mud entering from below, carrying any junk which will be trapped above the finger catchers

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Actual Fish Recovered

The following pictures are of a Motor Base Plug from a Submersible Pump picked up with a 7-7/8 OD Venturi Jet Basket in one trip.

The plug dimensions were 5-3/8 OD x 13 long and weighed 50 lbs.

The second trip picked up small pieces of junk.

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Cone Dimensions

• Know your dimensions

• 7-7/8” bit cone = 5-17/64” OD

• Bowen Itco Type Junk Basket: 7-1/8”OD barrel x 5-28/64”ID

• Weatherford type H Junk Basket:

• 7-1/2” OD barrel x 5-40/64 ID

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Junk Shot• Shaped charge to break up junk into smaller

pieces so it is fishable

• Circulate fill off junk

• Tag fish and fire shot

• Run in open hole only

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POOR BOYBASKET

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Poor Boy Baskets

• Fish is too large for conventional baskets

• Should be 1/2 smaller than hole ID

• Dressed with finger type bottom

• Fingers bend in: catches junk

• Lead, rubber, chain or wrench

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Poor Boy Baskets

• Carbide,wire, dimple rings, rods

• Relies on friction

• Mild steel for bending

• Custom made for a particular job

• Usually one of a kind, used only once

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Peen Shoe

• Burned over packer

• Perforation gun

• Shepherds hook

• Drill pipe rubbers

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Wire Catcher

• Hammer

• Lead

• Rubber

• Chain

• 24” pipe wrench

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Spring Tine

• Small OD sub or mill

• Perforating gun

• Shepherd’s hook

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Spring Tine Basket

Given:Milling on junk inside 2.992 ID

• 2-7/8 O D mill twisted off at box leaving

fishing neck of 2-1/4 OD x .75 long

• Successfully recovered fish with 2-7/8 OD

spring tine shoe

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Available Overshots

• Series 150 x 2-7/8” OD ; Max. catch = 2-1/8

• Series 70 short catch to catch 2-1/4 is 3-5/8

• Series 10 slim hole x 2-13/16 with maximum

catch of 2.330 was unavailable

• Series 20 short catch x 2-7/8” o.d.: Max. catch =

2-5/16 was unavailable

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Match Tool With Junk to be Fished Junk

Fishing Tool

1. Drill Bit Cone

2. 24” pipe wrench

3. Tong Dies

4. Drill Bit

5. Chain

6. Hammer

7. Wire Rope

8. Rubber

9. Lead

10. Shepherd’s hook

A. Magnet

B. Mill

C. Boot basket

D. Core Type basket

E. Reverse Circ.

F. “Po-Boy” basket

G. Ping Shoe

H. Wire Catcher

I. Spring Tine basket

J. Rope spear

K. Impression block

L. Wash pipe

M. Rope spear 2 prong

N. Taper Tap

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Match Tool / Junk

Drill Bit Cone - A,D,E Magnet if only one cone, Reverse basket or po-boy basket if more than one cone.

24 pipe wrench - D,E,F,H Core type basket, reverse circulating basket, po-boy basket, wire catcher basket

Tong dies - A,D,E,F,H Magnet, core type basket, reverse circulating basket, po-boy

basket, wire catcher basket

Drill Bit K,N

Chain - A,D,E,F,H

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Hammer - A,D,E,F,G,H Magnet, core type basket, reverse circulating basket, po-boy basket, wire catcher basket

Wire Rope - J

Rubber - D,E,F,H Core type basket, reverse circulating basket, po-boy basket, wire catcher basket

Lead - D,E,F,H

Shepherd’s Hook - G,H,I Ping shoe, wire catcher basket, spring tine basket

Perforating Gun - G,H,I

Match Tool/Junk

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BladedFlat Bottom

Junk Mills

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Mills

• Surest: more time consuming

• Run with boot basket

• Can spud lightly: break up junk

• Run 1/4” less than bit size

• Smooth OD, stabilizer pads/casing

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Mills

• Insert type best for pipe anchored

• Chatter and vibration are detrimental

• Use shock sub to cut down on vibration

• Carbide performs well in all conditions

• Neither performs well in abrasive formations

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Milling Rates:Surface Feet per MinuteCrushed carbide mills = 150 to 200 S.F.P.M.

Carbide insert mills = 150 to 300 S.F.P.M.

Surface Feet Per Minute = Mill Diameter X R.P.M. X .262

Example: Mill Dia. = 7”, RPM = 120, What is the SFPM ?

7” Mill X 180 RPM X .262 = 330 SFPM

R.P.M. = SFPM \ Dia. Mill X 3.82

Example: 330 SFPM \ 7” Mill X 3.82 = 180 RPM.

Microsoft Excel

Worksheet

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ConclusionsThe two ways to deal with junk in the hole are ….

Magnets are run of pipe because ….

A boot basket is loaded by….

The globe type junk basket is recommended in….

The reverse type junk basket is used in ….

If a core is recovered, but no junk, then ….

When recovery methods fail, it’s time to run ….

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Backoff Jet Cut Chemical Cut

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Ways to Part Pipe• Blind back-off

• Controlled back-off (string shot)

• Chemical cutter

• Jet cutter

• Severing tool

• Mechanical cutters

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Stretch Formula

Any coupled Pipe

K = 1.4 ÷ weight of pipe per foot

Integral Joint tubing or drill pipe

K = 1.5 ÷ weight of pipe per foot

1,000,000 x inches in stretch K x pounds of over pull

=Free Pipe

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Example

Packer set at 8,000 w/2-3/8 N80 tubing String weight of 37,600; Mark pull @ 57,600 20,000# over pull; had 48 of stretch

1.4 ÷ 4.7 = .2978 (K)

1,000,000 x 48 = 48,000,000 = 8,059 free .2978 x 20,000 5956

Conclusion? Stuck at Packer

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Calculations for Free Point in Stuck Drill Pipe Single or Tapered Strings

Enter the Information in the Red cells below, an estimated free point will be calculated

Stretch in inches 41 Measure Stretch in Inches

Overpull in Pounds 40,000 the Following Overpull(s)

Length of Larger Drill Pipe 10,000Length of Smaller Drill Pipe 2,200 2-7/8" DP 25,000.00

Plain-end weight of Larger Drill Pipe 17.93 3-1/2" DP 30,000.00

Plain-end weight of Smaller Drill Pipe 12.31 4-1/2" DP 35,000.00

Weight per/ft w / tool jt. on single string Drill Pipe 19.5 5" DP 40,000.00

EFP = Estimated Free Point EFP

Method #1 single string of drill pipe 13,325 Use the following Weights

For Drill Pipe

EFP Plain End W / Tool Jt.

Method #2 single string of drill pipe 13,513 2-7/8" DP 9.72 10.40

3-1/2" DP 12.31 13.30EFP 3-1/2" DP 14.63 15.50

Method #3 Tapered String Larger / Smaller Drill Pipe 12,412 4" DP 12.93 14.00

4" DP 14.69 15.70

4-1/2" DP 14.96 16.60

Note: If Stuck point is Less than the length of Larger Drill Pipe 4-1/2" DP 18.69 20.00

use the answer from Method #1 or #2 5" DP 17.93 19.50

Microsoft Excel

Worksheet

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Pull weight (above string weight) to obtain 3 - 1/2” of stretch per 1,000 ft of free pipe

Pipe Size (in.) LBS/Ft Required Pull (lbs.) 1 Tubing 2.25 5,000 1 - 1/4 Tubing 2.40 5,500 1 - 1/2 Tubing 2.90 6,500 2 - 1/16 Tubing 3.40 7,500 2 - 3/8 Tubing 4.70 10,000 2 7/8 Tubing 6.50 14,000 3 1/2 Tubing 9.30 20,000 3 1/2 Tubing 12.95 28,000 4 Tubing 13.40 29,000 4 - 1/2 Tubing 12.75 28,000 4 - 1/2 Tubing 15.50 34,000 2 - 7/8 Drill Pipe 10.40 23,000 3 - 1/2 Drill Pipe 13.30 30,000 4 - 1/2 Drill Pipe 16.60 36,000 5 Drill Pipe 19.50 43,000 Wts. not shown: Pull Force = 2208.5 x lbs./ft 5 Casing 15.00 33,000 General Rule in deviated holes: 5 - 1/2 Casing 17.00 36,000 Cased hole - add 400 lbs./degree 6 - 5/8 Casing 24.00 53,000 Open hole - add 700 lbs./degree 7 Casing 35.00 77,000 7 - 5/8 Casing 29.70 66,000 8 - 5/8 Casing 40.00 88,000 9 - 5/8 Casing 43.50 96,00010 - 3/4 Casing 45.50 100,000

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Blind back-off

Blind back-off operations are dangerous and should only be attempted as a last resort.

1. First, tighten the string to the right

2. Determine the weight of pipe to be backed off

3. Mark the pipe with this weight on indicator

4. Work torque to the left without slacking off below the neutral weight until pipe breaks

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Torque Required

• Tbg. 1/2 to1 1to11/2 3/4 to 11/4

• D.P. 1/2 3/4 to 1 1/2 to 3/4

• Csg.1/8 to1/4 1/4 to 1/2 1/8 to 1/4

Free Point Tighten Back-Off

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Shot Chart Example

Grains Per Foot

Mud 5000 10000 15000

4-1/2 10 200 300 350

14 300 350 400

18 300 350 400

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Cable HeadCollar Locator

Sinker Bars(Weights)

Slip Joint

(12”or 24”)

Oscillator

Upper BowSpring Assembly(1” to 10”)

Stresstector™

Lower BowSpring Assembly

Free Point Tool

An electronic strain guage run An electronic strain guage run on a single conductor cable on a single conductor cable used to measure torque or used to measure torque or stretch in a string of stuck pipe.stretch in a string of stuck pipe.

Tools are anchored to the pipe Tools are anchored to the pipe I.D. at two fixed points by either I.D. at two fixed points by either bow springs, dogs or magnets.bow springs, dogs or magnets.

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Avoid pulling pipe into the

wall/ free point with torque

Pipe sticking here while free pointing with stretch, appears jars not working below

Fishing Jars

Bumper Sub

Stuck Point

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String Shot Backoff

A A String Shot is the primacord and String Shot is the primacord and

blasting cap used to part a string of pipe. blasting cap used to part a string of pipe.

A string shot Backoff is the unscrewing of A string shot Backoff is the unscrewing of

a tool joint or coupling with explosives at a tool joint or coupling with explosives at

a predetermined depth.a predetermined depth.

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Advantages of String Shot

• Can run in combination with free point tool

• Can run through smaller ID than cutters

• The shot should not damage the connection,

however lay shot joints down for inspection.

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Other Uses S.Shot

• Outside back off

• Jar shot to free test plug out of well head

• Knock nozzles out of bit

• Knock plastic or corrosion off ID of pipe

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Five Requirements for a Back Off • Free - Connection must be free

• Torque - Correct left hand torque is needed

• Weight - Must be at neutral weight

• Shot - Proper size shot is required

• Across Tool Joint - The shot must be across the tool joint when fired

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Where to Back- 0ff?

Do you intend to fish the well?

No - As deep as you can

Yes - At least one joint above stuck point

Two joints above a key seat

100 feet below a casing seat

Not immediately below a dog leg or a drop of angle

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Where to Back - Off ?

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Pipe Recovery Log

• Along with the free point, a pipe recovery log is

usually required to determine the best fishing

procedure.

• The pipe recovery log utilizes a sonic system

which sets up a vibration in the stuck pipe.

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Pipe Recovery Log

• The vibration, measured by a receiver,

decreases at stuck intervals in proportion

to the severity of the stuck condition.

• The logging instrument is calibrated in known

free pipe, normally near the bottom of

the last casing string.

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Pipe Recovery Log

• After recording, a signal attenuation scale is

placed on the log.

• This scale, expressed in percentages,

accurately indicates the severity of stuck

conditions at each interval.

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Pup Joints

• Use Pup Joints when doing wireline work

• Figure top fish/ space out/pup joints

• Easier working at rotary/ 20 in air

• Saves operator time and money

• Promotes safe work environment

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Chemical Cutter

AdvantagesAdvantages Flare Free FishFlare Free Fish Leaves No DebrisLeaves No Debris Will not damage adjacent Will not damage adjacent

stringstring

DisadvantagesDisadvantages Heavy mud/problemsHeavy mud/problems Limitations on depthLimitations on depth Slips can punch through Slips can punch through

corroded tubingcorroded tubing

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Chemical Cutter

• Preferred method for tubing

• Must have fluid in hole

• Fluid prevents tool from jumping up the hole

• Fire with 10,000 up strain

• 85% success rate Movie File (MPEG)

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Jet Cutters

Sizes available from 1-5/32” to 12” Sizes available from 1-5/32” to 12” OD to Cut 1.660” to 13-3/8” casingOD to Cut 1.660” to 13-3/8” casing

Jet cutter works on the shaped Jet cutter works on the shaped charge principlecharge principle

Used to cut corroded tubingUsed to cut corroded tubing

Cutter will leave a slightly flared fishCutter will leave a slightly flared fish

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Super Jet Cutter

Works on same shaped Works on same shaped charge principal using more charge principal using more explosivesexplosives

Cutting deeper and under Cutting deeper and under higher hydrostatichigher hydrostatic

Will damage casing, used Will damage casing, used mostly for P. and A.mostly for P. and A.

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Severing Tool

• • 2-5/8 O D tool will sever up to 2-5/8 O D tool will sever up to 1111OD drill collarsOD drill collars

• • Used in open hole only Used in open hole only

• • Sizes available 1-3/8”to2-5/8”Sizes available 1-3/8”to2-5/8”

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Severing Tool Used mostly as a sidetrack Used mostly as a sidetrack

tool due to bad flaring tool due to bad flaring and splitting which and splitting which makes fishing difficult.makes fishing difficult.

Fire in the tool joint, it will Fire in the tool joint, it will only flare the tube area. only flare the tube area.

Hold strain up whileHold strain up while firing firing

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Mechanical Internal Cutter

Cost Effective:

Shallow cuts Large O.D. tubulars Cut/retrieve in single trip Well conditions too adverse for W.L.

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