2. Pull 2 7/8 Tubing
and seals with
landing joint
Yes
Yes
No
8-2-2000 2
Latch in and back
out PBR with Itco
Spear
Yes
Landing joint
made up in
hanger
Pull Tubing and
seals with shoulder
type Itco spear
No
No
Movement
at hanger
Chemical cut
above PBR
Mechanical cut 10'
below hanger
Jar out hanger
Pull seals w/
overshot
Yes
No
No
Yes
Free point and BO
or cut at top of
stuck point
Decision to be based
on type of stuck pipe and
depth of stuck point
Mill and recover
packer
Bit and Scrapper
Job Complete
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.
8-2-2000 3
4. 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.
8-2-2000 4
Shortcut to most common.mpg.lnk
6. 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
8-2-2000 6
7. 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
8-2-2000 7
8. 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
8-2-2000 8
10. 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.
8-2-2000 10
11. H.E. Washover External
• The cutter can bCe umtatneirpulated 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.
8-2-2000 11
12. H.E. Washover External
Cutter The “DH” external cutter is made up of
three sections:
• The overshot section
• The drive section
• The cutting section
8-2-2000 12
14. 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.
8-2-2000 14
15. 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 5-9/16² OD cutter will
handle 30,000 pounds.
• Maximum cutting loads are also specified
8-2-2000 15
16. 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 1² to 1-
1/2²
1-1/2 to
2-3/8²
2-3/8² 2-7/8²
Max. Load on
Bearing
10,000 15,000 20,000 30,000
Maximum
Length
Tubing to cut
1,000¢ 1,000¢
2²Eue
1,500¢
2²Eue
8-2-2000 16
1,000¢x2-
1/2 Eue
Maximum
cutting
load
2,000 3,000 3,000 4,000
Cutting Speed 20 to 60
RPM
20 to 60
RPM
20 to 60
RPM
20 to 60
RPM
Approximate
Cutting Time
1-5
Min.
1-5
Min.
1-5
Min.
1-5
Min.
Cutter Capacity
17. Weight on Indicator to Cut
• Weight of the blocks
• Weight of the fishing string
• Weight of the fish
• Maximum cutting load weight
8-2-2000 17
18. 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
8-2-2000 18
19. 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 19
20. Outside Cutter
8 1/8” Bowen external
DP Cutter
1 Joint 8 1/8”washpipe
Rachet Paul
Spring
Will recover
stub app. 2.50’
Maximum cutter
clearance 6 1/2”
Two trip operation
Measure from top
of fish to flipper
“dogs”
Knives
22 1/2’
8-2-2000 20
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
8-2-2000 21
22. 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 22
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 23
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 24
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
8-2-2000 25
32. 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 32
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 33
34. Operating Procedures
• The 6-1/16² 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.
8-2-2000 34
40. 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 40
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 41
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 42
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 its
Range by Substituting the Parts Shown Under a Given “Can Be Dressed to Cut” Table. This includes the “Extra” Parts.
Designed To Cut 1.9
Tub.
2-3/8
Tub.
2-7/8
Tub.
2-7/8
Tub.
3-1/2 O.D.
Tub.
4-1/2
F.H.D.P.
4-1/2
I.F.D.P. 5 I.U.D.P.
Can Be Dressed to Cut
2-7/8
I.F.D.P.
2-
7/8 Tub.
3-1/2
I.F.D.P.
4 Tub. 41/2
Tub.
4-1/2
F.H.D.P.
4-1/2
Csg.
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 3-3/8
I.D. Solid Solid Solid Solid ½ Solid Solid Solid
Standard Assembly With Drag
Spring or Wiper Block D.S. D.S. D.S. D.S. W.B. D.S. W.B. D.S.
Complete Assembly Part No.
Weight
25940
15
2174
16-1/2
8505
22
9176
28-1/2
8570
39
9465
39
8844
54
8-2-2000 43
9081
71
Designed To Cut
5 O.D.
Csg.
6 O.D.
Csg.
7 O.D.
Csg
8-5/8 9
O.D.
Csg.
9-5/8
O.D. Csg.
11-3/4
Csg.
13 13-
3/8 O.D.
Csg.
16 Csg. 20 Csg.
Can Be Dressed to Cut
5-1/2
Csg.
6-5/8 Csg.
7 Csg.
7-5/8
Csg. 8
Csg. 8-
½ Csg.
9-5/8
Csg.
10-3/4
Csg. 11-
¾ Csg.
12 L.P. 18-5/8
Csg.
20-3/4
Csg.
Minimum O.D. 4 5 5-11/16 7-1/4 8-1/4 11-3/4 14-1/2 18-5/8
I.D. 5/8 1 1-1/2 2 2-1/4 3-1/4 3-1/4 5 5
Standard Assembly With Drag
Spring 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
8200
130
14785
180
8745
251
15532
410
15080
680
41876
900
19525
1120
21240
1150
19760
1200
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 44
45. Mill out extension, seal bore and no extension
8-2-2000 45
I
II
III
Permanent
Packer Mill Out Extension
Seal
Bore
Position
Nipple
W/ No-Go
Pup
Joint
Re-Entry
Guide
Shortcut to retrieving packers.mpg.lnk
47. 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 g
3 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 g
3 1 / 2 x 2 . 8 1 T E - 5
T R S C S S V
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
3 1 / 2 x 2 . 7 5 C M D
8 0 - 4 0 G - 3 6 C T S A
8 5 - 4 0 F B 3 3 6 R C B C
8 0 - 4 0 x 2 0 ' s e a l B o r e
E 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 r
3 1 / 2 x 1 0 ' P u p J o i n t
3 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
8-2-2000 47
4 4 8
4 5 0
4 5 9
1 2 , 1 3 3
1 2 , 1 4 7
1 2 , 1 5 0
1 2 , 1 5 3
1 2 , 1 7 3
1 2 , 1 7 4
1 2 , 1 8 4
1 2 , 1 9 4
1 2 , 2 4 6
1 2 , 2 4 7
1 2 , 3 0 0
1 2 , 3 4 5
6 . 0 5 9
2 . 9 9 2
2 . 9 9 2
2 . 8 1 0
2 . 9 9 2
2 . 7 5 0
2 . 9 9 2
4 . 0 0 0
4 . 0 0 0
2 . 9 9 2
2 . 9 9 2
2 . 5 6 0
2 . 9 9 2
2 . 5 6 0
4 5 0
7 . 0 0
3 . 8 0 3
3 . 8 0 3
5 . 3 8 0
3 . 8 0 3
3 . 8 0 3
3 . 9 7 8
5 . 8 7 5
5 . 5 0 0
5 . 5 0 0
3 . 8 0 3
3 . 8 0 3
3 . 8 0 3
3 . 8 0 3
4 . 5 0 0
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 48
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 49
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 50
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 51
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 52
53. Milling Rates:Surface Feet per Minute
Crushed 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 53
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 54
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 55
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 56
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.
8-2-2000 57
65. 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 65
66. Last cut - optional
2nd Cut
1st Cut
25’
5’
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!
8-2-2000 66
73. Wash Down in Annulus
Worst Case - All Three Major O.D.s of the Strings Coming
Together at the Same Time
5 1/2” 17#
Casing with
4.892” I.D.
Fish in Hole:
1 1/2” EUE
10Rd (O.D. of
Coupling)
Wash String: 1”
CS Hyd. (O.D.
of Upset)
Fish in Well: 1 1/2”
CS Hyd. (O.D.
of Connection)
Æ2.5000
Æ1.6000
Æ2.1130
8-2-2000 73
74. A-5 Packer
2 3/8” 4.7#
CS Hyd. Tubing
11,570’
Position Nipple
W/1.875” I.D.
7 5/8” 29.7#
Casing
11,920’
2 3/8” 4.7”
.8Rd Tubing
Top Wire @ 6420
Baker A5 Dual Packer
5,500’ of 9/16” Line
and Swab Assembly
Baker DB Packer
8-2-2000 74
75. Procedure #1
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.
8-2-2000 75
77. 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 77
78. A-5 Packer
6,128’
11,570’
Position Nipple
W / 1.875” I.D.
2 3/8” Tubing Cut Above
Wireline in Long String
Baker A5 Dual Packer
Swab and 9/16” Line
Left in Tubing
Baker DB Packer
7 5/8” 29.7#
Casing
11,920’
8-2-2000 78
79. Procedure # 3
1) Pull short string.
2) Wash sand to top of lower Pkr., using
420¢of 1² 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.
8-2-2000 79
80. Clean out between packers
Work String
5,500’ of
2 3/8” CS Hyd.
Tubing
420’ of
1” CS Hyd. Tubing
W / Mule Shoe
6,128’
Baker A5 Dual Packer
11,570’
7 5/8” 29.7#
Casing
Baker DB Packer
11,920’
8-2-2000 80
81. Procedure # 4
1. Pull short string.
2. Chemical cut long string @ 6400, just above the
wireline.
3. Run 5-3/4² 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.
8-2-2000 81
82. Inside-Outside Backoff Collar
Wireline Crossed Over From Work String to Casing
Fish
4 9/16” O.D.
Overshot
7 5/8”
Casing
Inside-Outside
Backoff Collar Crossover
8-2-2000 82
Work
String
Drain Hole
4.125”
5.750”
2 7/8” IF Pin Defection Window 2” I.D. 2 7/8” IF Box
83. Procedure # 5
1. Pull short string.
2. Chemical cut long string @ 6400, just above the
wireline.
3. Run 5-9/16² 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.
8-2-2000 83
