best practices day 2 afternoon
TRANSCRIPT
8-2-2000 1
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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
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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.
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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
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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
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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.
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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.
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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.
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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.
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• 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.
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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
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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.
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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.
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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)
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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.
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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. = 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.
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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.
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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
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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.
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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
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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
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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
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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’
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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
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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’
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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
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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