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Pull 2 7/8 Tubingand seals with

landing joint

Latch in and backout PBR with Itco

Spear

Yes

Landing jointmade up in

hanger

Pull Tubing andseals with shoulder

type Itco spear

No

No

Movementat hanger

Yes

Chemical cutabove PBR

Yes

Mechanical cut 10'below hanger

Jar out hanger

Pull seals w/overshot

Yes

No

No

Yes

Free point and BOor cut at top of

stuck point

No

Decision to be basedon type of stuck pipe and

depth of stuck point

Mill and recoverpacker

Bit and Scrapper

Job Complete

8-2-2000 3

Differences Open/Cased Hole • Junk more hazardous in cased hole

• Few pieces can foul tool/ slips on packer

• Small clearances increases chance of sticking due to sand or junk.

• Can’t wall off as in open hole

• Labor bound W/ tubing/ pumping, rotating capacity/ non viscous fluid.

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Mud Stuck Tubing

• Most common WO fishing jobs are stuck tubing

• Caused by de-hydrated mud o sand in annulus

• Best method is to free point and back-off, circulate out, screw back together, work the pipe, free point, etc.

Shortcut to most common.mpg.lnk

8-2-2000 5

Sand Stuck Tubing

Sand in annulusentered thru hole in tubing

� It is common to have a slot It is common to have a slot worked in the sand causing worked in the sand causing the free point tool to show free the free point tool to show free pipe, that cannot be pulled.pipe, that cannot be pulled.

� Freepoint should be run with Freepoint should be run with maximum pull to avoid this. maximum pull to avoid this.

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Stuck Tubing

• Other causes of stuck tubing are collapsed casing or a frozen packer.

• Permanent packers can be milled over and retrieved

• Retrievable’s are usually releasable/ no sand on top

• Retrievable’s are difficult to mill,made of premium alloy steel

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Retrieving Packers

• Tubing free to packer, string shot/free

• No success, cut tubing 1/2 Jt. above Pkr.

• Either jar free or mill over and retrieve

• Stuck long way from packer, cannot jar

• Out side wash down cutter on washpipe

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Washover Operations/Cased Hole

Performed in cased hole to:

• Wash sand or dehydrated mud from around completion string

• Mill over packers/other completion tools

• Mill junk from the outside of a fish

• Make external cuts on completion string

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Washover Operations

Shortcut to washover.mpg.lnk

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H.E. Washover External Cutter

• Designed to washover, cut and retrieve tubulars in one trip.

• The tool can be rotated and reciprocated without damage.

• Uses the tubing collar or integral joint to activate the cutting section as needed.

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H.E. Washover External Cutter• The cutter can be manipulated to cut or

release from collar connected or bottle neck pipe.

• This is achieved without any left hand rotation, jay joints, shear pins, or pump manipulation.

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H.E. Washover External Cutter

The “DH” external cutter is made up of three sections:

• The overshot section

• The drive section

• The cutting section

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Houston Engineers Mechanical External Wash Down Cutter

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Knifes are Protected

• The cutting section cannot be damaged by heavy loads placed on the overshot section.

• The load on the knifes is fixed by the way the cutter is designed.

• By protecting the cutting section, long and heavy loads can be recovered.

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Attempt to Pull Fish• After the last washover is completed down

to a packer, it may be desirable to pull on the fish to attempt a total recovery.

• Maximum bearing loads are specified

• Example: The 5-9/16″ OD cutter will handle 30,000 pounds.

• Maximum cutting loads are also specified

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Nominal Size 3-3/4 4 4-1/2 5-1/2

Actual O.D.-INS 3-3/4 4-1/8* 4-9/16 5-9/16

Actual I.D. –INS 2-7/8 3-3/16 3-3/8 4

Tubing to Cut 1″ to 1-1/2″

1-1/2 to2-3/8″

2-3/8″ 2-7/8″

Max. Load onBearing

10,000 15,000 20,000 30,000

MaximumLengthTubing to cut

1,000′ 1,000′2″Eue

1,500′2″Eue

1,000′x2-1/2 Eue

Maximumcuttingload

2,000 3,000 3,000 4,000

Cutting Speed 20 to 60RPM

20 to 60RPM

20 to 60RPM

20 to 60RPM

ApproximateCutting Time

1-5Min.

1-5Min.

1-5Min.

1-5Min.

Cutter Capacity

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Weight on Indicator to Cut

• Weight of the blocks

• Weight of the fishing string

• Weight of the fish

• Maximum cutting load weight

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Procedure to Release Cutter

• To release the cutter, slowly rotate the

pipe while raising it simultaneously.

• Pick up until the cutter overshot engages

the collar,taking a slight up strain

• The cutter will jump off the collar

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Procedure To Cut Pipe

• Pick up on string without rotation, until

cutter engages the coupling

• Take recommended pull load.

• Rotate to the right. Cut is made in one to

five minutes.

8-2-2000 20

a

Outside Cutter

8 1/8” Bowen externalDP Cutter

1 Joint 8 1/8”washpipe

Rachet Paul

Spring

Will recoverstub app. 2.50’

Maximum cutterclearance 6 1/2”

Knives

Measure from topof fish to flipper“dogs”

22 1/2’

Two trip operation

8-2-2000 21

Bowen External Cutter

• A two trip cutter

• Fish must have been washed over first to insure the cutter will go

• Tool is run on bottom of washpipe

• Cut one joint above lowest point washed to

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Dressing the Cutter

• Select proper catching assembly

• Spring Dog; square shouldered pipe

• Ratchet pawl; bottle neck pipe

• Assemble cutter Per Bowen Manuel

• Wedge knifes in slots with soft line

8-2-2000 23

Cutting Procedures

• Circulate at top of fish, record torque

and drag parameters.

• Rotate as little as possible while getting

over fish.

• Take care not to break the knives while

picking up to pull the slips.

8-2-2000 24

Cutting Procedures

• Slowly raise the string until the ratchet pawls engage the tool joint

• Upward strain will cause the mainspring to compress snapping the shear pin.

• The main spring will fed the knives automatically with even cutting pressure.

8-2-2000 25

Cutting Procedure

• Thereafter, the cut is made by rotating the string slowly to the right.

• Weight gain and loss of torque indicate that the cut is made.

• The spring dog or ratchet pawl will retain the cut off section.

• Do not rotate while POH

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Bowen Hydraulic External Cutter

• It is hydraulically operated to cut tubing or drill pipe externally.

• Knives are fed entirely by pump pressure.

• Will cut any where on the tube,doesn’t have to be under a collar.

8-2-2000 33

Operation Procedures• At cutting depth, begin pumping slowly with the

fill up line and standpipe valves open.

• Slowly close the fill up line until 150 P.S.I. is reached to shear the shear pins.

• Bleed the standpipe pressure off, begin rotating at 15 to 25 R.P.M.’s.

• Slowly bring pump pressure up until torque is encountered.

8-2-2000 34

• The 6-1/16″ O.D. tool requires only 40 P S I to make a cut.

• A rough chattering action followed by the smoothing of the torque will signal when the cut is made.

• Bring the cut section out and strip it from the washpipe.

Operating Procedures

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Inside Mechanical Cutter

• Used to cut casing that can be retrieved prior to running a casing patch.

• Rotation to the right allows the friction assembly to unscrew from the mandrel.

• Further lowering permits the cone to be driven through the slips, thereby anchoring the tool.

8-2-2000 41

Cutter Operation• As the slips firmly engage, the wedge block

forces the knives outward.

• This action is continued until the pipe is cut as indicated by either increased or decreased torque.

• When the cut is completed, the pipe is raised, the slips disengage, the knives retract, and the friction assembly returns automatically to the run in position.

8-2-2000 42

Unique Feature of Tool

• A unique feature or the tool is the “automatic nut” which allows the resetting and disengaging of the tool any number of times without P.O.H.

• A bumper sub should be run one drill collar up to set a predetermined amount of weight on the cutter to avoid breaking the knives.

8-2-2000 43

SPECIFICATIONS AND REPLACEMENT PARTS

BOWEN INTERNAL CUTTER-ITCO TYPE

Principal Parts of all Cutters are Shown in the Column Under and Assembly No. and May be Adapted to Cut All Other Sizes in itsRange by Substituting the Parts Shown Under a Given “Can Be Dressed to Cut” Table. This includes the “Extra” Parts.

Designed To Cut1.9

Tub.2-3/8Tub.

2-7/8Tub.

2-7/8Tub.

3-1/2 O.D.Tub.

4-1/2F.H.D.P.

4-1/2I.F.D.P.

5 I.U.D.P.

Can Be Dressed to Cut2-7/8

I.F.D.P.2-

7/8 Tub.

3-1/2I.F.D.P.

4 Tub. 41/2Tub.

4-1/2F.H.D.P.

4-1/2Csg.

4-1/2 Csg.4-3/4 Csg.

5 Csg.

Minimum O.D. 1-1/2 1-13/16 2-1/4 2-1/4 2-5/8 2-1/2 3-3/8 3-3/8I.D. Solid Solid Solid Solid ½ Solid Solid Solid

Standard Assembly With DragSpring or Wiper Block

D.S. D.S. D.S. D.S. W.B. D.S. W.B. D.S.

Complete Assembly Part No. Weight

2594015

217416-1/2

850522

917628-1/2

857039

946539

884454

908171

Designed To Cut5 O.D.Csg.

6 O.D.Csg.

7 O.D.Csg

8-5/8 & 9O.D.Csg.

9-5/8O.D. Csg.

11-3/4Csg.

13 & 13-3/8 O.D.

Csg.

16 Csg. 20 Csg.

Can Be Dressed to Cut

5-1/2Csg.

6-5/8 Csg.7 Csg.

7-5/8Csg. 8Csg. 8-½ Csg.

9-5/8Csg.

10-3/4Csg. 11-¾ Csg.

12 L.P. 18-5/8Csg.

20-3/4Csg.

Minimum O.D. 4 5 5-11/16 7-1/4 8-1/4 11-3/4 14-1/2 18-5/8I.D. 5/8 1 1-1/2 2 2-1/4 3-1/4 3-1/4 5 5Standard Assembly With DragSpring or Wiper Block W.B. W.B. W.B. W.B. W.B. W.B. W.B. W.B. W.B.Complete Assembly Part No. Weight

8200130

14785180

8745251

15532410

15080680

41876900

195251120

212401150

197601200

8-2-2000 44

Packer Retrieving Tools

Common packer retrieving tools; Weatherford J-B bushing, Weatherford shear pin type, Bowen Simplex, HE - PRT

Mill out extension determines which to use

• If mill out extension present, any tool

• If no mill out extension, use Weatherford J-B bushing

8-2-2000 45

Mill out extension, seal bore and no extension

I

II

III

PermanentPacker Mill Out Extension

SealBore

PositionNipple

W/ No-Go

PupJoint

Re-EntryGuide

Shortcut to retrieving packers.mpg.lnk

8-2-2000 46

Video Clip

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D E P T H D E S C R I P T I O N O . D . I . D .

7 " 2 9 # S - 9 5 C a s i n g3 1 / 2 " 9 . 3 # L - 8 0 N e w V a m

3 1 / 2 " 9 . 3 # L - 8 0 N e w V a m F l o w C o u p l i n g3 1 / 2 " x 2 . 8 1 " " T E - 5 "T R S C S S V

3 1 / 2 " x 2 . 7 5 " C M D

3 1 / 2 " 9 . 3 # L - 8 0 N e w V a m F l o w C o u p l i n g

8 0 - 4 0 G - 3 6 C T S A

8 5 - 4 0 " F B 3 3 6 R C B & C8 0 - 4 0 x 2 0 ' s e a l B o r eE x t e n s i o n

8 0 - 4 0 S B X x 3 1 / 2 9 . 3 # N e w V a m X - o v e r3 1 / 2 " x 1 0 ' P u p J o i n t3 1 / 2 " x 2 . 5 6 " " F " N i p p l e

3 1 / 2 P e r f o r a t e d J o i n t

3 1 / 2 " x 2 . 5 6 " " R " N i p p l e

3 1 / 2 W i r e l i n e E n t e r y G u i d e

4 5 0

1 2 , 1 5 0

1 2 , 3 0 0

1 2 , 3 4 5

1 2 , 1 3 3

4 5 9

4 4 8

1 2 , 1 8 4

1 2 , 1 7 41 2 , 1 7 3

1 2 , 1 5 3

1 2 , 1 4 7

1 2 , 2 4 7

1 2 , 2 4 6

1 2 , 1 9 4

2 . 8 1 0

4 . 0 0 0

2 . 7 5 0

2 . 9 9 2

2 . 9 9 2

2 . 9 9 26 . 0 5 9

2 . 5 6 02 . 9 9 22 . 9 9 2

4 . 0 0 0

2 . 9 9 2

4 5 02 . 5 6 0

2 . 9 9 2

5 . 3 8 0

5 . 8 7 5

3 . 8 0 3

3 . 8 0 3

3 . 8 0 3

3 . 8 0 37 . 0 0

3 . 8 0 33 . 8 0 35 . 5 0 0

5 . 5 0 0

3 . 9 7 8

4 . 5 0 03 . 8 0 3

3 . 8 0 3

8-2-2000 48

Packer Job Preparation• Schematic and date of well setting

• Production string details

• Permanent or releasable, make, model,etc.

• Releasing Procedures

• Special retrieving tools

• Blast joints, x-nipples, ball valves, etc.

8-2-2000 49

Assembly Checklist

• Insure shear pins are in place, note the number and shear values.

• Ensure enough working space is available between the rotary shoe and the attachment tool.

• Make sure the inside diameter of the rotary shoe is large enough to pass over the catching device.

8-2-2000 50

Assembly Checklist

• Ensure there is enough washpipe above the (JB) bushing to cover the fish,plus the inner mandrel and the fishing tool attachments.

• If a spear is used, make sure the grapple is locked in the catch position with a pin down in the gap area.

8-2-2000 51

Running Procedure

• TIH, do not engage fish yet.

• Break circulation slowly and record all parameters.

• Make sure enough kelly is available above the rotary to engage fish, release from the (JB) bushing and mill over the entire fish. (Disregard if top drive is available)

8-2-2000 52

Releasing Instructions• Slowly lower the work string and make

engagement to the fish.

• Pick up to shear the pins; about 5,000 lbs.

• Hold 1/4 round left hand torque (at the tool) while slacking off approximately one foot. This should clear the lugs from the spline.

• Begin milling operations with 1 to 2,000# wt. to groove the top of packer.

8-2-2000 53

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. = 4.5” ; RPM. = 120 ; What is the SFPM ?

4.5” Mill X 120 RPM X .262 = 142 SFPM

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

Example: 142 SFPM \ 4.5” Mill X 3.82 = 120 RPM.

8-2-2000 54

Parameters

• Max.Wt. = 1,000# per OD inch of mill

• Mill with torque; not weight

• Set torque limit; weakest connection

• A.V. of 150/200 Ft./min.

8-2-2000 55

Observations

• Should space rings begin to turn; dry drill with maximum drill collar weight until they lock up and torque is regained

• Run high viscosity sweep’s

• Check cuttings often for signs

• 8 rd. tubing will make up 1”/1,000

8-2-2000 56

Shoe Design

• Important, custom build to specific needs

• Qualified carbide welder a must

• Factory made crown larger than tube

• Allows for counter boring for larger rod

• Dress crown OD to casing drift size

• Packer type to be milled determines ID

8-2-2000 57

Shoe ID Size

• For permanent packers dress the ID so the mandrel will be OD fishable after burn over

• For dual packers and retrievable types,dress the shoe to cut as little as possible off the packer, but still cut the slips to effect release.

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H.E. & Bowen Simplex PRT’s

Pickup Packer Hull and Remove from Well with Spear

Cut Packer Loose with Shoe

Trip in Hole and Engage Packer

8-2-2000 66

Last cut - optional

2nd Cut

1st Cut

1. Duals are 90% retrievable if you clean the sand off top.

2. Clean out I.D. of tubing with Sand Bailer or Coil tubing.

3. Free point both strings - make decision accordingly.

4. Cut between Packers first - attempt to release S.S. - cut 2nd.

5. Cut long string last.

6. Step way down - 500’ intervals - keep tops 1-1/2 joints apart.

7. Use 1” or 1 1/4” C.S. Hydril wash string if annulus area permitting.

8. Use smaller O.S. - example 4 11/16” instead of 5 3/4”.

9. Run thin shoes to Mill Packer.

10. Good Luck!

25’

5’

8-2-2000 67

Mechanical Sticking

Wrap Around

� Caused by the two string wrapping Caused by the two string wrapping around one another while running around one another while running them in the hole.them in the hole.

� In free pointing, stretch can be In free pointing, stretch can be transmitted deeper than torque.transmitted deeper than torque.

� If cuts in both strings are If cuts in both strings are needed,they should be staggered a needed,they should be staggered a minimum of 45 Feet.minimum of 45 Feet.

8-2-2000 68

Mule Shoe Joint with “No-Go”

2.000 1.600

1.315 O.D.1” CS Hyd. Box Conn.

No-Go

.975 I.D.

2.000

48” +/-

8-2-2000 69

2 3/8” O.D. Special Washdown Mill

1.0000 1.00006.0000

2.3750

2.375

0.250

0.500

0.500

2.300”O.D.

2 1/16”CS Hyd.

Three water coursesplaced 120 apart

Dress round partof mill only

1.25

150º

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3 1/2” DSS Tubing

3 7/8” O.D. x 2.920” I.D.

9 5/8” 47#Casing (8.681” I.D.)

3 1/2” O.D.Washdown Tool

9-5/8 - 47#

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7” 29# Casing

2 7/8” O.D.EUE 8RD Tubing --3.668” O.D. x 2.441” I.D.

2 3/4” O.D.Washout Assembly

7” O.D. x 6.184” I.D.

8-2-2000 72

7″ x 35 pound

2.875

2.875

2.000

Collars on2 3/8” 8-Acme

Tubing

6.004

7.000

7”

35#

C

asin

g

Washtool

8-2-2000 73

Wash Down in AnnulusWorst Case - All Three Major O.D.s of the Strings Coming

Together at the Same Time

5 1/2” 17#Casing with4.892” I.D.

Fish in Hole:1 1/2” EUE10Rd (O.D. ofCoupling)

Wash String: 1”CS Hyd. (O.D.of Upset)

Fish in Well: 1 1/2”CS Hyd. (O.D.of Connection)

∅2.5000

∅2.1130

∅1.6000

8-2-2000 74

A-5 Packer

2 3/8” 4.7#CS Hyd. Tubing

11,570’

Position NippleW/1.875” I.D.

7 5/8” 29.7#Casing

11,920’

2 3/8” 4.7”.8Rd Tubing

Baker A5 Dual Packer

5,500’ of 9/16” Lineand Swab Assembly

Baker DB Packer

Top Wire @ 6420

8-2-2000 75

1. Wash sand from S.S. w/coil tbg. Unit.

2. Fish wireline from L.S. w/coil & scrugrab.

3. Cut long string below dual packer.

4. Move in and rig up rig.

5. Pull short string.

6. Pull long string and dual packer.

7. Burn over permanent packer with trip saver bushing.

Procedure #1

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Procedure # 2

1. Pull short string

2. Chemical cut long string at 6400

3. Rec. /w.L., spear,1.660, shear pin

4. Run 5-3/4 O.S.

5. Chemical cut 1/2 joint below dual and recover same

6. W.P., trip saver, retrieve seals and/or burn over lower packer

8-2-2000 78

A-5 Packer

6,128’

11,570’

Position NippleW / 1.875” I.D.

2 3/8” Tubing Cut AboveWireline in Long String

Baker A5 Dual Packer

Swab and 9/16” LineLeft in Tubing

Baker DB Packer

7 5/8” 29.7#Casing

11,920’

8-2-2000 79

1) Pull short string.

2) Wash sand to top of lower Pkr., using 420′of 1″ CS Hydril with mule shoe.

3) Chemical cut long string @ 6400.

4) Run 5-3/4 O.S., jars etc., recover dual and seals from lower packer

5) Run P.R.T. for lower packer.

Procedure # 3

8-2-2000 80

Clean out between packers

Work String

5,500’ of2 3/8” CS Hyd.

Tubing

420’ of1” CS Hyd. Tubing

W / Mule Shoe

6,128’

Baker A5 Dual Packer11,570’

7 5/8” 29.7#Casing

Baker DB Packer11,920’

8-2-2000 81

1. Pull short string.

2. Chemical cut long string @ 6400, just above the wireline.

3. Run 5-3/4″ overshot and inside-outside back off collar.

4. Make an outside back-off with a 40′ long shot

5. Fish exposed wireline with a rope spear

6. Engage long string with overshot and chemical cut 15′ below dual packer.

7. Recover dual packer and proceed with fishing the tubing and permanent packer.

Procedure # 4

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Inside-Outside Backoff Collar

Wireline Crossed Over From Work String to Casing

Fish4 9/16” O.D.Overshot

7 5/8”Casing

Inside-OutsideBackoff Collar Crossover

WorkString

Drain Hole

4.12

5”

5.75

0”

2 7/8” IF Pin Defection Window 2” I.D. 2 7/8” IF Box

8-2-2000 83

1. Pull short string.

2. Chemical cut long string @ 6400, just above the wireline.

3. Run 5-9/16″ H.E. wash down cutter, cut 300′ below top of wireline

4. Fish exposed wireline with a rope spear

5. Engage long string with overshot and chemical cut 15′ below long string.

6. Recover dual packer and proceed with fishing the tubing and permanent packer.

Procedure # 5