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SECTION 6 – REPAIR & REMEDIAL
For Ordering:
Sales; 281-376-3784 or 1-800-OVERSHOT (683-7746), or Fax; 281-376.1614
‘www.gotco-usa.com’
1
GOTCO INTERNATIONAL, INC.
OPERATION & MAINTENANCEMANUAL
TABLE OF CONTENTS
CASING ROLLER---------------------------PAGE 2 Illustrations 2
General Description 3
Operation 3
Construction 3
Maintenance 3
How To Order 3-4
Casing Roller Range Tables 5-7
CASING SCRAPER-------------------------PAGE 8
Illustrations 8
General Description 9Construction 9
Assembly 9
How To Order 9-10
CASING PATCH, LEAD SEAL TYPE--PAGE 11
Illustrations 11
General Description 12
Construction 12
Assembly And Operation 12
Options 12
Lead Seal Casing Patch Setting Load Table 12
How To Order 12-13
CASING PATCH, PACKER TYPE-------PAGE 14
Illustrations 14Packer Type Casing Patch Setting Load Table 15
General Description 16
Construction 16
Component Parts 16
Operation 16-17
To Release from the Fish 17
Assembly 17
How To Order 17-18
CROSSOVER SUB (ROTARY SUBS)---PAGE 19Illustrations 19
General Description 19
Construction 19
How To Order 19-20
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SECTION 6 – CASING ROLLER
2
Casing Roller Assembly
Gotco Casing Roller
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SECTION 6 – CASING ROLLER
4
GOTCO CASING ROLLER TO ROLL CASING SIZE 2-3/8
TUB
2-7/8
TUB
3-1/2
TUB
4 & 3-1/2
LP 4
TUB
4-1/2
4-3/4
5 CSG
5-1/2
5-3/4
6 CSG
TOP CONNECTION 10 HARDY
GRIFFIN
1-13/16
WFJ
1-1/4
REG
EUE
1-1/2
2-3/8
REG
2-7/8
REG
CIRCULATION HOLE 3/8 3/8 5/16 1/4 1/2 5/8
INDIVIDUAL ROLLER LENGTH 3 3 3 4 4 5
COMPLETE ASSEMBLY PART# CR-23 CR-27 CR-34 CR-4 CR-5 CR-54
REPLACEMENT PARTS MANDREL PART# CR-23-1 CR-27-1 CR-34-1 CR-4-1 CR-5-11 CR-54-1
NOSE CONE PART# CR-23-2 CR-27-2 CR-34-2 CR-4-2 CR-5-2 CR-54-2
LOWER ROLLER PART# CR-23-3 CR-27-3 CR-34-3 CR-4-3 CR-5-3 CR-54-3
MIDDLE ROLLER PART# CR-23-4 CR-27-4 CR-34-4 CR-4-4 CR-5-4 CR-54-4
UPPER ROLLER PART# CR-23-5 CR-27-5 CR-34-5 CR-4-5 CR-5-5 CR-54-5
BALL BEARINGS PART#
NO. REG.
CR-23-6
9
CR-27-6
13
CR-34-6
9
CR-4-6
7
CR-5-6
9
CR-54-6
13
LOADING SLOT SET
SCREW
PART# CR-23-7 CR-27-7 CR-34-7 CR-4-7 CR-5-7 CR-54-7
GOTCO CASING ROLLER (CONTINUED) TO ROLL CASING SIZE 6-5/8
7CSG
7-5/8
8-5/8*CSG
9
9-5/810* CSG
10-3/4
11-3/4*12* CSG
13
13-3/8
16
18-5/8*
TOP CONNECTION 3-1/2
REG
4-1/2
REG
4-1/2
REG
6-5/8
REG
6-5/8
REG
6-5/8
REG
CIRCULATION HOLE 1 1-1/4 1-1/2 1-3/4 2 2
INDIVIDUAL ROLLER LENGTH 6 7 8 9 10 11
COMPLETE ASSEMBLY PART# CR-7 CR-85 CR-95 CR-106 CR-133 CR-185
REPLACEMENT PARTS MANDREL PART# CR-7-1 CR-85-1 CR-95-1 CR-106-1 CR-133-1 CR-185-1
NOSE CONE PART# CR-7-2 CR-85-2 CR-95-2 CR-106-2 CR-133-2 CR-185-2
LOWER ROLLER PART# CR-7-3 CR-85-3 CR-95-3 CR-106-3 CR-133-3 CR-185-3
MIDDLE ROLLER PART# CR-7-4 CR-85-4 CR-95-4 CR-106-4 CR-133-4 CR-185-4
UPPER ROLLER PART# CR-7-5 CR-85-5 CR-95-5 CR-106-5 CR-133-5 CR-185-5
BALL BEARINGS PART#
NO. REG.
CR-7-6
15
CR-85-6
12
CR-95-6
16
CR-106-6
24
CR-133-6
21
CR-185-6
28
LOADING SLOT SET
SCREW
PART# CR-7-7 CR-85-7 CR-95-7 CR-106-7 CR-133-7 CR-185-7
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SECTION 6 – CASING ROLLER
5
GOTCO CASING ROLLERS – RANGE SHEET
9.5 3.875 7 1/2 4.032
11.6 3.688 5 1/2 3.938
13.6 3.526 4 1/2 3.859
4 3/4 15.75 3.688 3 1/2 3.875 7 1/4 3.688 8 4.032
11.5 4.250 10 4.500
13.0 4.114 9 4.438
15.0 4.192 9 1/2 4.343
17.7 3.976 8 4.234
18.0 3.965 8 4.218
21.0 3.688 3 1/2 4.000 8 3.688 8 4.094
13.0 4.802 14 4.982
14.0 4.738 14 4.950
15.0 4.666 13 4.912
15.5 13 4.888
17.0 4.554 11 4.830
20.0 4.574 11 4.716
23.0 4.358 10 4.608
14.0 5.082 17 5.228
17.0 4.894 15 5.128
19.5 4.894 15 5.028
22.5 4.694 14 4.928
15.0 5.300 20 5.462
16.0 5.250 19 5.438
18.0 5.100 18 5.362
20.0 4.956 16 5.29023.0 4.875 12 4.982 17 4.875 19 5.178
17.0 5.910 24 6.072
20.0 5.745 22 5.987
22.0 5.745 22 5.927
24.0 5.609 20 5.859
26.0 5.478 18 5.793
26.0 5.442 17 5.775
28.0 5.350 16 5.729
29.0 5.547 18 5.699
32.0 5.375 16 5.613
17.0 6.202 29 6.476
20.0 6.038 25 6.394
22.0 6.164 26 6.33623.0 6.108 26 6.304
24.0 6.000 20 6.048 25 6.000 32 6.274
26.0 6.094 26 6.214
28.0 5.970 25 6.152
29.0 5.910 24 6.122
Nose Cone
4.662
CR-5-2 3.125
6
4.0005 1/2
8
12
10 1/2
Casing
3.688
4.250
4.000
Upper Roller Middle Roller
CR-5-4
CR-54-4
CR-5-3
CR-54-3
3.688
4.250
Lower Roller
CR-5-2 3.750
15
13
4.662
4.609
4.359
4.875
CR-7-4
10
5.830
6.250
6.000
16
24
20
5.830
CR-7-3
5.359
6.250
6.000
5.609
5.000
5.500
28
22
36
32
CR-5-2
16
16
Mean Casing
Drift Dia. (Tool
Rolls)Size Wt. Part No. O.D. Wt. Part No. O.D. Wt.Part No. O.D. Wt. Part No. O.D. Wt.
4.662
5.125
5.7346 5/8
7
CR-5-5
CR-54-5
CR-7-5
4 1/2
5
5 1/2
5 3/4
5.125
5.734
5.609
5.359
4.609
4.359
4.875
4.662
6
12
9
15
3 1/2
7 1/2
9
9
22
27
25
5 1/4
6
17
13
19
16
22
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SECTION 6 – CASING ROLLER
6
GOTCO CASING ROLLERS – RANGE SHEET
Size Wt. Part No. O.D. Wt. Part No. O.D. Wt. Part No. O.D. Wt. Part No. O.D. Wt.
30.0 5.854 23 6.09232.0 5.734 15 5.830 23 5.734 27 6.032
35.0 5.776 22 5.609 25 5.942
38.0 5.609 20 5.858
40.0 5.442 17 5.774
20.0 6.875 42 7.062
24.0 6.676 39 6.963
26.4 6.562 37 6.906
29.7 6.686 42 6.812
33.7 6.468 35 6.703
39.0 6.188 30 6.563
24.0 7.758 62 8.035
28.0 7.594 56 7.955
32.0 7.594 56 7.859
36.0 7.402 54 7.763
38.0 7.302 52 7.713
40.0 7.452 54 7.663
43.0 7.304 52 7.589
44.0 7.250 44 7.563
49.0 7.024 45 7.449
34.00 8.000 44 7.676 50 8.000 74 8.212
38.00 7.768 52 8.118
40.00 7.676 50 8.072
45.00 7.812 54 7.954
55.00 7.375 43 7.734
29.30 8.720 82 8.985
32.30 8.696 81 8.973
36.00 8.438 75 8.843
40.00 8.514 77 8.757
43.00 8.350 70 8.677
47.00 8.456 76 8.603
53.50 8.164 63 8.457
10 33.00 8.812 70 9.050 91 8.812 100 9.306
32.75 9.728 78 10.114
40.00 9.976
40.50 9.972
45.00 9.882
45.50 9.872
48.00 9.148 54 9.824
51.00 9.294 60 9.772
54.00 9.162 56 9.706
55.50 9.114 50 9.682
38.0 10.869 122 11.072
42.00 10.754 113 11.002
47.00 10.594 108 10.922
54.00 10.354 104 10.802
60.00 10.138 95 10.694
12 40.00 10.750 90 10.862 120 10.750 150 11.306
36
CR-106-2 8.250
8.750
9.500
9.250
10.250
96
87
128
42
67
57
88
81
8.500
8.250
8.000
CR-106-4
9.444
9.254
68
59
CR-106-3 60
80
74
58
51
CR-7-2 6.500
6.000
44
CR-95-4 CR-95-3
7.718
7.343
CR-85-3
CR-7-2 6.625
7.375
7.125
67
62
58
5.375 3043
40
CR-7-2
5.000 17
CR-85-5 CR-85-4 CR-7-3 CR-7-26.500
48
40
7.562
Casing
Casing
Drift Dia.
Upper Roller Middle Roller Low er Roller Nose Cone
CR-7-4 CR-7-3
CR-85-5 7.562
7.375
7.125
44
39
38
CR-85-4
6.500
6.188 6.188
23
18
11 3/4
CR-7-5
5.609 13
CR-95-5
7.718
7.343
8.500
8.250
8.000
7
7 5/8
8 5/8
9
9 5/8
10 3/4
37
27
CR-106-5 9.500
9.250
10.250
36
27
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SECTION 6 – CASING ROLLER
7
GOTCO CASING ROLLERS – RANGE SHEET
Size Wt. Par t No. O.D. Wt. Par t No. O.D. Wt. Par t No. O.D. Wt. Par t No. O.D. Wt.
40.00 11.846 118 12.360
45.00 11.677 107 12.282
50.00 11.534 100 12.204
54.00 11.410 95 12.142
48.00 12.024 118 12.637
54.50 11.812 117 12.537
61.00 11.625 107 12.437
68.00 11.812 102 12.337
72.00 11.677 97 12.269
83.00 11.320 93 12.097
85.00 11.288 90 12.081
55.00 14.844 250 15.297
65.00 14.554 234 15.17275.00 14.344 220 15.047
84.00 14.114 210 14.932
78.00 17.304 440 17.777
87.50 17.104 392 17.104
96.50 16.904 370 17.577
18 5/8
CR-133-5
Upper Roller Middle Roller Casing
105
146
325
CR-185-5
11.625
14.500
17.000
Mean Casing
Drift Dia. (Tool
Rolls)
13 3/8
16
Lower Roller Nose Cone
CR-133-3
CR-185-3
11.625CR-133-4
CR-185-4
17.000
158
284
463
14.500 34014.00
CR-133-2
CR-185-3
CR-133-4 CR-133-3 11.625 15811.625 105 CR-133-2 10.00 120
13 3/8 12.000 75 12.000 178
13 CR-133-5
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SECTION 6 – CASING SCRAPER
8
Casing Scraper Assembly
Blades
Center Ring
Springs
Body
Top Connection
Retaining
Screws
Casing Scraper-Exploded View
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SECTION 6 – CASING SCRAPER
9
CASING SCRAPER
GENERAL DESCRIPTION
The Gotco Casing Scraper is designed to remove scale,
mud cake, cement sheath, embedded bullets, and other
foreign material from the inside of the casing wall.
Maintaining a clean casing I.D. is vital to the efficient
operation of downhole tools used in drilling the well.
The resulting smooth surface properly prepares the
casing for subsequent downhole operations such as
packer setting and squeeze tools.
CONSTRUCTION
Manufactured from alloy steel and heat treated to
provide strength and durability, each scraper must pass
rigid non-destructive testing to ensure the highest
quality product. Each tool has six blades specially
aligned on the body to provide the maximum cutting
surface aria for vertical and rotational scraping. The blades are designed to give optimum shearing action
with the least amount of restriction to returning well
fluid. The splined body provides absolute safety and
security by locking each blade onto an integral part of
the scraper. This unique body design also allows for
ease of maintenance and dressing of the tool. All Gotco
casing scrapers can be easily set for positive or spring
loaded scraping action. Even when set positive to drift,
the spring loaded design will effectively scrap varied
casing within the well. All blades are cast steel and heat
treated to provide long lasting service life.
ASSEMBLY
Assembly of the Gotco casing scrapper is quick and
simple and can easily be done in the field. Secure the
tool body. Insert springs into the blade body drive. Set
blade over body splines at center of tool, compress
blade and slide into splines. Install remaining blades in
the same manner. Offset the upper blade set from the
lower set by one spline. Secure blades to body with split
collar ring.
ORDERING INSTRUCTIONS
When Ordering Please Specify:1)
Name and part number
2)
Connection, if not standard
3) Casing size and weight
Ordering Information continues on the next page.
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SECTION 6 – CASING SCRAPER
10
CASING SCRAPER(selection table)
CASING SIZE
4” 4-1/2 4-1/2 5” 4-1/2 / 5” 5” 5-1/2
CASING
WEIGHT
9.5 – 13.4 9.5 – 13.5 15.1 – 18.8 15 – 18 4-1/2 - 9.5 – 13.5
5” – 23.2 – 24.1
11.5 - 18 13 - 23
COMPLETE
ASSEMBLY
CS-G-7400-1
3-1/8” O.D.
CS-G-7400-2
3-1/8” O.D.
CS-G-7400-3
3-1/8” O.D.
CS-G-7400-4
3-1/8” O.D.
CS-G-7450-1
3-5/8” O.D.
CS-G-7450-2
3-5/8” O.D.
CS-G-7450-3
3-5/8” O.D.
BODY CS-G-7400 CS-G-7400 CS-G-7400 CS-G-7400 CS-G-7450 CS-G-7450 CS-G-7450
BLADES CS-G-8450-1 CS-G-8450-2 CS-G-8450-3 CS-G-8450-4 CS-G-8452-1 CS-G-8452-2 CS-G-8452-3
CENTER RING CS-G-7455 CS-G-7455 CS-G-7455 CS-G-7455 CS-G-7456 CS-G-7456 CS-G-7456
BOLTS CS-G-7453 CS-G-7453 CS-G-7453 CS-G-7453 CS-G-7457 CS-G-7457 CS-G-7457
SPRINGS CS-G-8458 CS-G-8458 CS-G-8458 CS-G-8458 CS-G-8458 CS-G-8458 CS-G-8458
CASING SIZE 5-1/2 6” 6-5/8 6-5/8 6-5/8 / 7” 7”
CASING
WEIGHT
13 - 23 15 - 23 17 - 23 24 - 32 6-5/8 -17 – 28
7” – 26- 38
17 - 29
COMPLETE
ASSEMBLY
CS-G-7550-1
4.410 O.D.
CS-G-7550-2
4.410 O.D.
CS-G-7550-3
4.410 O.D.
CS-G-7550-4
5-3/8 O.D.
CS-G-7700-1
5-3/8 O.D.
CS-G-7700-2
5-3/8 O.D.
BODY CS-G-7550 CS-G-7550 CS-G-7550 CS-G-7550 CS-G-7700 CS-G-7700
BLADESCS-G-8552-1 CS-G-8552-2 CS-G-8552-3 CS-G-8552-4 CS-G-8702-1 CS-G-8702-2
CENTER RING CS-G-7556 CS-G-7556 CS-G-7556 CS-G-7556 CS-G-7706 CS-G-7706
BOLTS CS-G-7557 CS-G-7557 CS-G-7557 CS-G-7557 CS-G-7707 CS-G-7707
SPRINGS CS-G-8558 CS-G-8558 CS-G-8558 CS-G-8558 CS-G-8708 CS-G-8708
CASING SIZE 7-5/8 7-5/8 8-3/4 9-5/8 9-5/8 9-3/4 / 9-7/8 10-3/4
CASING
WEIGHT
20 - 39 26.4 – 45.3 8-5/8 - 24 – 49
8-3/4 - 49.7
29.3 - 53.5 43.5 – 61.1 9-3/4 – 59.20
9-7/8 – 62.80
32.75 – 55.5
COMPLETE
ASSEMBLY
CS-G-7700-3
5-3/8 O.D.
CS-G-7700-4
5-3/8 O.D.
CS-G-7700-5
5-3/8 O.D.
CS-G-7860-2
7-7/8 O.D.
CS-G-7860-7
7-7/8 O.D.
CS-G-7860-3
7-7/8 O.D.
CS-G-7860-1
7-7/8 O.D.
BODY CS-G-7700 CS-G-7700 CS-G-7700 CS-G-7860 CS-G-7860 CS-G-7860 CS-G-7860
BLADES CS-G-8702-3 CS-G-8702-4 CS-G-8702-5 CS-G-8862-2 CS-G-8862-7 CS-G-8862-3 CS-G-8862-1
CENTER RING CS-G-7706 CS-G-7706 CS-G-7706 CS-G-7866 CS-G-7866 CS-G-7866 CS-G-7866
BOLTS CS-G-7707 CS-G-7707 CS-G-7707 CS-G-7867 CS-G-7867 CS-G-7867 CS-G-7867
SPRINGS CS-G-8708 CS-G-8708 CS-G-8708 CS-G-8868 CS-G-8868 CS-G-8868 CS-G-8868-HD
CASING SIZE 10-3/4 11-3/4 / 11-7/8 13-3/8 10-3/4 11-3/4 13-3/8
CASING
WEIGHT
60.7 – 73.2 11-3/4 - 38-71
11-7/8-71.8
48-72 32.75 – 55.5 38 – 65 48 – 72
COMPLETE
ASSEMBLY
CS-G-7860-4
7-7/8 O.D.
CS-G-7860-5
7-7/8 O.D.
CS-G-7860-6
7-7/8 O.D.
CS-G-13300-2
9-1/2 O.D.
CS-G-13300-3
9-1/2 O.D.
CS-G-13300-1
9-1/2 O.D.
BODY CS-G-7860 CS-G-7860 CS-G-7860 CS-G-13300 CS-G-13300 CS-G-13300
BLADES CS-G-8862-4 CS-G-8862-5 CS-G-8862-6 CS-G-13301-2 CS-G-13301-3 CS-G-13301-1
CENTER RING CS-G-7866 CS-G-7866 CS-G-7866 CS-G-13302 CS-G-13302 CS-G-13302
BOLTS CS-G-7867 CS-G-7867 CS-G-7867 CS-G-7867 CS-G-7867 CS-G-7867
SPRINGS CS-G-8868-HD CS-G-8868-HD CS-G-8868-HD CS-G-8868-HD CS-G-8868-HD CS-G-8868-HD
CASING SIZE 18-5/8
CASING
WEIGHT
78 – 117.5
COMPLETE
ASSEMBLY
CS-G-13300-4
9-1/2 O.D.
BODY CS-G-13300
BLADES CS-G-13301-4
CENTER RING CS-G-13302
BOLTS CS-G-7867
SPRINGS CS-G-8868-HD
NOTE: All but the BODY can be ordered as Replacement Parts, contact GOTCO Sales for details.
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SECTION 6 – CASING PATCH, LEAD SEAL TYPE
11
Lead Seal Casing Patch Assembly
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SECTION 6 – CASING PATCH, LEAD SEAL TYPE
12
CASING PATCH LEAD SEAL TYPE
GENERAL DESCRIPTION
The damaged portion of casing must be cut and
removed from the hole. It is important to properly cut
and dress the top of the downhole casing for effective
engagement and packoff. The top of the string
remaining downhole must be prepared for engagement.
Preparation can include rolling the casing with a Gotco
casing roller to assure roundness and proper diameter.
CONSTRUCTION
The Casing Patch consists of a bowl, guide, grapple
carrier, grapple, grapple control, and seal assembly.
Load bearing components are high strength heat treated
alloy steel to ensure string integrity is maintained. A
box connection on the upper end of the casing patch
will be cut to customer specifications. The seal
assembly is composed of two sleeves manufacturedfrom pure, unalloyed, fully annealed lead. These lead
sleeves will provide the seal in the patch which joins
the two casing strings. Seal rings aid in setting the lead
seals into the correct position.
ASSEMBLY & OPERATION
Make up the casing patch to the bottom of the new
casing string. Be sure to use tongs only on the upper
end of the bowl, near the top connection. Lower the tool
into the hole. When the fish is reached, slowly lower
the casing patch while rotating slowly to the right.
Continue until the fish has passed through the guide and bottomed out in the grapple carrier. Stop rotation.
Slowly pick up the string to remove any weight or
residual torque. Caution: Backlash could cause the
patch to disengage. The lead seal is set by raising the
string. The setting load required will vary depending
on the size of the Casing Patch. After the casing patch
has been set into position, it becomes a permanent part
of the casing string. (See setting load requirements
table.)
The Casing Patch may now be checked for a proper seal
by applying pump pressure. Do not exceed a nominal
500 to 1,000 P.S.I. Before applying pressure, it is betterto first reduce the setting load to a nominal 10,000 to
15,000 pounds load or approximately 1/4th of the
original setting load, using the smaller of the two
variables.
Once the Lead Seals are properly set, only a minimum
load will be required to maintain the seal. In most
cases, the load required to set the slips to maintain the
pipe is sufficient. Avoid over pulling the Casing Patch.
The casing patch may be removed if necessary by
bumping down to release the grip of the grapple.
Slowly raise the string while rotating to the right.
Continue till the patch has cleared the casing. Lift from
the hole.
OPTIONS
Lead Seal Cementing type Casing Patches and special
Packer Type Casing Patches that do not require lead or
cementing, but instead contain a rubber seal designed
to engage, pack off, and become a permanent part of
the repaired casing or tubing.
SETTING LOAD TABLE:
Assembly Casing
Size
Casing
Patch
O.D.
Setting
Load
(lbs.)
LS-23 2-3/8 3-7/16 10,800
LS-27 2-7/8 4 12,700
LS-350 3-1/2 4-3/4 21,000
LS-4 4 5-1/4 22,300
LS-44 4-1/2 5-3/4 26,000
LS-5 5 6-1/4 30,000
LS-54 5-1/2 6-13/16 32,000
LS-56 5-3/4 7-1/16 31,200
LS-6 6 7-5/16 32,500
LS-65 6-5/8 7-15/16 44,000
LS-7 7 8-3/8 42,000LS-75 7-5/8 9 48,000
LS-85 8-5/8 9-5/8 54,000
LS-95 9-5/8 11-1/8 65,000
LS-97 9-7/8 11-3/8 69,400
LS-106 10-3/4 12-5/16 76,000
LS-116 11-3/4 13-1/2 70,500
LS-133 13-3/8 15-1/2 103,000
LS-135 13-5/8 15-7/8 105,000
LS-2000 20 24 283,000
ORDERING INSTRUCTIONS
When Ordering Please Specify:1)
Name and Number of Assembly or Part.
2)
Casing O.D.
3)
Size and Type of Thread
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SECTION 6 – CASING PATCH, LEAD SEAL TYPE
13
GOTCO CASING PATCHES - LEAD SEAL TYPE CASING O.D. 2-3/8 2-7/8 4 4-1/2 5 5-1/2 5-3/4 6
PATCH O.D. 3-7/16 4 5-1/4 5-3/4 6-1/4 6-13/16 7-1/16 7-5/16
COMPLETEASSEMBLY
PART# LS-23 LS-27 LS-4 LS-4 LS-5 LS-54 LS-56 LS-6
REPLACEMENT PARTS BOWL PART# LS-23-1 LS-27-1 LS-4-1 LS-4-1 LS-5-1 LS-54-1 LS-56-1 LS-6-1
GRAPPLECARRIER
PART# LS-23-3 LS-27-3 LS-4-3 LS-4-3 LS-5-3 LS-54-3 LS-56-3 LS-6-3
GRAPPLE PART# LS-23-8 LS-27-8 LS-4-8 LS-4-8 LS-5-8 LS-54-8 LS-56-8 LS-6-8
GRAPPLE
CONTROL
PART# LS-23-7 LS-27-7 LS-4-7 LS-4-7 LS-5-7 LS-54-7 LS-56-7 LS-6-7
GUIDE PART# LS-23-2 LS-27-2 LS-4-2 LS-4-2 LS-5-2 LS-54-2 LS-56-2 LS-6-2
LEAD SEAL
(2 REQD)
PART# LS-23-5 LS-27-5 LS-4-5 LS-4-5 LS-5-5 LS-54-5 LS-56-5 LS-6-5
CENTER SEALRING
PART# LS-23-4 LS-27-4 LS-4-4 LS-4-4 LS-5-4 LS-54-4 LS-56-4 LS-6-4
GOTCO CASING PATCHES - LEAD SEAL TYPE (CONTINUED) CASING O.D. 6-5/8 7 7-5/8 8-5/8 9-5/8 10-3/4 11-3/4 13-3/8
PATCH O.D. 7-15/16 8-3/8 9 10-1/16 11-1/8 12-5/16 13-1/4 15-1/2
COMPLETE
ASSEMBLY
PART# LS-65 LS-7 LS-75 LS-85 LS-95 LS-106 LS-116 LS-133
REPLACEMENT PARTS BOWL PART# LS-65-1 LS-7-1 LS-75-1 LS-85-1 LS-95-1 LS-106-1 LS-116-1 LS-133-1
GRAPPLE
CARRIER
PART# LS-65-3 LS-7-3 LS-75-3 LS-85-3 LS-95-3 LS-106-3 LS-116-3 LS-133-3
GRAPPLE PART# LS-65-8 LS-7-8 LS-75-8 LS-85-8 LS-95-8 LS-106-8 LS-116-8 LS-133-8
GRAPPLE
CONTROL
PART# LS-65-7 LS-7-7 LS-75-7 LS-85-7 LS-95-7 LS-106-7 LS-116-7 LS-133-7
GUIDE PART# LS-65-2 LS-7-2 LS-75-2 LS-85-2 LS-95-2 LS-106-2 LS-116-2 LS-133-2
LEAD SEAL
(2 REQD)
PART# LS-65-5 LS-7-5 LS-75-5 LS-85-5 LS-95-5 LS-106-5 LS-116-5 LS-133-5
CENTER SEALRING
PART# LS-65-4 LS-7-4 LS-75-4 LS-85-4 LS-95-4 LS-106-4 LS-116-4 LS-133-4
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SECTION 6 – CASING PATCH, PACKER TYPE
14
Top Sub Protector
Packer
Barrel
Basket Grapple
Mill Control Packer
GuideExploded Assembly View
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SECTION 6 – CASING PATCH, PACKER TYPE
15
SETTING LOAD TABLE (for Packer Type Casing Patch):
Assembly Casing
Size
Casing
Patch
O.D.
Max.
Internal
Burst(psi)
Max.
Recommended
Pressure (psi)Across
Packers
Tensile
Strength (lbs)
@ Yieldw/ “0” psi
Max.
Recommended
Pull Load (lbs)w/ “0” psi
PCP-287 2-7/8 4” N/A
PCP-350 3-1/2 4-3/4” N/A
PCP-450 4-1/2 5-3/4” 10,600 5,000 398,600 288,900
PCP-550 5-1/2 6-13/16” 10,300 5,000 481,850 361,350
PCP-662 6-5/8 7-15/16” 7,550 5,000 378,550 284,000
PCP-700 7” 8-3/8” 8,050 5,000 415,300 311,500
PCP-962 9-5/8 11-1/8” 7,400 5,000 568,320 426,250
PCP-1175 11-3/4 13-3/8” 7,290 3,500 667,150 500,400
PCP-1337 13-3/8 15-1/8” 6,200 3,500 686,650 515,000
The values listed above are accurate within plus or minus 20% and are intended to be used only as a guide. They do
not constitute a guarantee, actual or implied.
NOTE: The figures listed for “burst” values, apply to the Bowl only. Maximum packer pressure values should NOT
be exceeded. Combined load of tensile and pressure should be taken into account when using the casing patch.
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SECTION 6 – CASING PATCH, PACKER TYPE
16
GOTCO PACKER TYPE CASING PATCH
GENERAL DESCRIPTION:
The Gotco Packer Type Casing Patch is
designed to externally engage with damaged tubing or
casing, pack it off, and become a integral part of the
casing or tubing.
The “fish” must be properly prepared prior to
engaging with the casing patch. When the upper
portion of a casing string is ruptured or not concentric
with the lower portion, the upper portion must be
removed and replaced. The Gotco Packer Type
Casing Patch provides the means necessary to patch
between the old and the new casing.
The method for engaging is very similar to a
standard Gotco Series 150 Overshot which utilizes a
grapple and grapple control to engage and seal off
around the fish. The main difference is that thePacker Type Casing Patch is capable of sealing off the
fish in both directions. This will provide a leak proof
seal which can be released if the need arises.
Full Circulation can be achieved through the
casing or tubing without any restriction.
CONSTRUCTION:
The Gotco Packer Type Casing Patch is
composed of only six mechanical parts, a packer, and
seal sets to prevent leakage and to pack off the fish.
This simple design allows for easy assembly,
operation, and maintenance of the tool. The designincorporates a high grade of steel for all component
parts in order to withstand pulling strains and wear.
COMPONENT PARTS:
The Gotco Packer Type Casing Patch has a
Top Sub with an upper connection in order to properly
makeup to the running string. There is a seal located
at the bottom of the Top Sub to seal off between the
Top Sub and the Bowl.
The Bowl houses the rubber packer, Packer
Protector, Grapple, and the “E” Style Mill Control
Packer. The Bowl is threaded to accept the Guide atthe bottom of the tool.
The Guide is generally flush with the casing or
tubing outside diameter and is furnished with a cut lip
at the end unless specified otherwise. The purpose of
the Guide is to assist the fish in entering the grapple
portion of the Casing Patch. The Guide also helps to
maintain integrity with the internal parts of the
assembly.
The Grapple is similar in design to a standard
Gotco Series 150 Overshot, accept that it is a little
longer than a standard Overshot Grapple of a similar
size. The Grapple contains carburized water tight
wickers in the I.D. for engaging with the fish. There
are spirals machined on the outside diameter that
match opposing spirals on the inside diameter of the
Bowl. It is these opposing spiral angles that apply the
forces necessary to engage and secure the fish while
the tool is pulled upward. The Grapple is designed to
expand as necessary to allow for entry of the fish.
Both the wickers and the spirals on the Grapple are
made with a Left Hand lead, which will allow for
releasing from the fish by using right-hand rotation.
In order to pack-off around the casing or
tubing, a double rubber packer is provided that is
capable of sealing off pressure from both directions.
The Packer is made from compounds that is suitable
for general oil well servicing. The Packer is resistantto most well fluids and abrasion.
When in operation, the Packer is protected by
the Seal Protector. The Seal Protector protects the
upper lip portion of the Packer while engaging with
the fish. As the fish enters the tool, it will push the
Packer Protector in it’s uppermost position against the
end of the Top Sub. As the fish passes the upper
portion of the Packer, the Packer lip will flex down
into a sealing position around the fish.
The Mill Control Packer is located at the
lower end of the tool inside the control cavity located
in the Bowl. The Mill Control Packer serves three
basic functions. First, it deburrs the fish as it entersthe lower portion of the tool. Secondly, it seals off
around the fish. Thirdly, it serves as a key to transmit
torque from the Bowl to the Grapple while allowing
for the Grapple to move freely up and down to engage
and release from the fish.
OPERATION:
Before running the Gotco Packer Type Casing
Patch, the fish must first be prepared. The upper end
of the fish must be free of burrs, splits, abnormalities,
and sometimes, properly sized.
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SECTION 6 – CASING PATCH, PACKER TYPE
17
Assemble the tool to the running string and
buck it up tight. Use Tongs on the Top Sub Only!
Tonging on to the Bowl may cause the Bowl to become
distorted or crushed.
Lower the Casing Patch into the hole until the
fish depth is reached. When a depth just above the
fish is reached, begin slow right-hand rotation while
slowly lowering the Casing Patch. This step is
important for the proper function and operation of the
tool.
Once the Casing Patch has bottomed out on
the fish, the Packer Protector will have moved upward
and rest against the Top Sub. This can be verified by
watching the rig weight indicator. Allow for
approximately 15,000 to 20,000 pounds of weight to
be applied to the Casing Patch.
Pick up the running string and allow for slack
to be removed from the string. Avoid any backlash to
occur during this procedure. The effectiveness of the
Packer may be checked by applying mud pressure.Care must be given to apply pressure slowly
so that the Packer will seat properly. Do not apply
sudden pressure or create shock loading with the mud
pumps during this operation.
Pick up the running string and apply sufficient
pull to remove any slack and set the slips. Do not
apply any upward or downward load. Any excessive
upward strain will reduce the hydrostatic pressure
capacity of the tool.
Note: If for some reason the tool is
disengaged with the fish, no attempt should be made
to re-engage with the fish without first bringing thetool up to the surface to reset the Packer Protector
into the proper position. This will prevent any
damage occurring to the upper lip of the Packer.
TO RELEASE FROM THE FISH:
If for some reason it is necessary to release
and remove the Casing Patch from the tubing or
casing string, proceed as follows:
Bump down until the top of the fish bottoms
out against the Top Sub. After bumping down,
slowly elevate the string while slowly applying right-
hand rotation. Continue this action until the CasingPatch is clear of the fish. The combined right-hand
rotation while slowly raising the string is essential for
proper function of the Casing Patch to release from
the fish.
ASSEMBLY:
1. Clean all parts thoroughly and lubricate all
mechanical connections with grease or oil. If
the part will be stored for a long time, do not
lubricate the rubber parts or the area of the
Bowl that houses the Packer.
2. Insert the Rubber Packer into the Packer
cavity located in the upper portion of the
Bowl. Collapse the Packer inward toward
the center in order to position it into the
Bowl. The orientation of the Packer doesn’t
matter since it is symmetrical.
3. Assemble the Packer Protector. This should
be slid into the upper portion of the Bowl and
into the upper portion of the rubber Packer
until it rest just against the lower lip of the
Packer. Do not go beyond the lower lip of
the Packer. It is a good idea to measure this
distance first in order to check how deep the
Protector will need to go into the Bowl.
4. Assemble the Grapple into the Bowl. The
Grapple will screw into the lower end of the
Bowl using left-hand rotation. The large
control slot should be facing toward you as it
is screwed into place inside the Bowl. TheGrapple should be screwed in until the slot in
the Grapple lines up with the slot in the
Bowl. This will allow the key on the Mill
Control Packer to properly fit inside the Bowl
and mate with the control slot portion of the
Grapple.
5. Insert the Mill Control Packer in the lower
portion of the Bowl making sure that the
control key is facing away from you and rest
into the control slot of the Bowl and Grapple.
6. Assemble the Guide to the lower portion of
the Bowl making sure that thread dope is
applied to the threads first.7. Place the proper O-ring in the O-ring gland
provided on the Top Sub. Apply thread dope
to the threads and assemble the Top Sub to
the Bowl.
** To Disassemble, reverse the order of
assembly as shown above.
ORDERING INSTRUCTIONS
When Ordering Please Specify:
1)
Name and Number of Assembly or Part.
2)
Casing O.D.
3) Size and Type of Thread
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SECTION 6 – CASING PATCH, PACKER TYPE
18
GOTCO CASING PATCHES - PACKER TYPE CASING O.D. 2-7/8” 3-1/2” 4-1/2” 5-1/2” 6-5/8” 7” 9-5/8” 11-3/4”
PATCH O.D. 4” 4-3/4” 5-3/4” 6-13/16” 7-15/16” 8-3/8” 11-1/8” 13-3/8”
COMPLETEASSEMBLY
PART# PCP-287 PCP-350 PCP-450 PCP-550 PCP-662 PCP-700 PCP-962 PCP-1175
REPLACEMENT PARTS TOP SUB PART# PCP-287-3 PCP-350-3 PCP-450-3 PCP-550-3 PCP-662-3 PCP-700-3 PCP-962-3 PCP-1175-3
SEALKIT
PART# PCP-287-7 PCP-350-7 PCP-450-7 PCP-550-7 PCP-662-7 PCP-700-7 PCP-962-7 PCP-1175-7
PACKER
PROTECTOR
PART# PCP-287-9 PCP-350-9 PCP-450-9 PCP-550-9 PCP-662-9 PCP-700-9 PCP-962-9 PCP-1175-9
PACKER PART# PCP-287-6 PCP-350-6 PCP-450-6 PCP-550-6 PCP-662-6 PCP-700-6 PCP-962-6 PCP-1175-6
BOWL PART# PCP-287-1 PCP-350-1 PCP-450-1 PCP-550-1 PCP-662-1 PCP-700-1 PCP-962-1 PCP-1175-1
BASKET
GRAPPLE
PART# PCP-287-4 PCP-350-4 PCP-450-4 PCP-550-4 PCP-662-4 PCP-700-4 PCP-962-4 PCP-1175-4
MILL CONTROLPACKER
PART# PCP-287-5E
PCP-350-5E
PCP-450-5E
PCP-550-5E
PCP-662-5E
PCP-700-5E
PCP-962-5E
PCP-1175-5E
GUIDE PART# PCP-287-2 PCP-350-2 PCP-450-2 PCP-550-2 PCP-662-2 PCP-700-2 PCP-962-2 PCP-1175-2
GOTCO CASING PATCHES - PACKER TYPE (CONTINUED) CASING O.D. 13-3/8”
PATCH O.D. 15-1/8”
COMPLETE
ASSEMBLY
PART# PCP-1337
REPLACEMENT PARTS TOP SUB PART# PCP-1337-3
SEAL
KIT
PART# PCP-1337-7
PACKER
PROTECTOR
PART# PCP-1337-9
PACKER PART# PCP-1337-6
BOWL PART# PCP-1337-1
BASKETGRAPPLE
PART# PCP-1337-4
MILL CONTROL
PACKER
PART# PCP-1337-5E
GUIDE PCP-1337-2
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SECTION 6 – CROSSOVER SUB (ROTARY SUBS)
19
CROSSOVER SUB (ROTARY SUBS)
GENERAL DESCRIPTION
Gotco manufactures a complete line of rotary subs.
Each sub provides a connection between joints of
different size or type of drilling, washover, or tubing
strings. Gotco subs may be used in applications when it
is necessary to have frequent disconnection points.
CONSTRUCTION
All Gotco subs are manufactured form high-alloy, heat-
treated steel and threaded to the customer’s
specifications.
ORDERING INSTRUCTIONS
When Ordering Please Specify:1)
Length of Sub is determined by the required
overall measurement.
2)
Size and type of thread each end, O.D., I.D.,
overall length. Length can be specified from
shoulder to shoulder of the part if desired.
3) For connections other than API, on request.
* Use this column for figuring Sub Blanks.
Note: Subs can be ordered pin to pin, box to box, or
box to pin and are available in lengths up to 96 inches.
Right- or left-hand threads can be provided.
Box to Box Box to Pin Pin to Pin
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SECTION 6 – CROSSOVER SUB (ROTARY SUBS)
20
GOTCO ROTARY SUBS
TYPES: PIN TO PIN, OR PIN TO BOX, UPSET NECK,
ALLOY STEEL, HEAT TREATED, THREADED LARGEST O.D. NOT
LARGER THAN INCHES 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3
COMPLETEASSEMBLYLENGTH
PART#
INCHES
XO-14
10
XO-16
10
XO-20
10
XO-22
10
XO-2473702
10
XO-26
10
XO-30
10
LARGEST O.D. NOT
LARGER THAN INCHES 3-1/4 3-1/2 3-3/4 4 4-1/4 4-1/2 4-3/4
COMPLETEASSEMBLY
LENGTH
PART#
INCHES
XO-32
10
XO-34
10
XO-36
10
XO-40
10
XO-42
10
XO-44
10
XO-46
12
LARGEST O.D. NOT
LARGER THAN INCHES 5 5-1/4 5-1/2 5-3/4 6 6-1/4 6-1/2
COMPLETE
ASSEMBLY
LENGTH
PART#
INCHES
XO-50
12
XO-52
12
XO-54
12
XO-56
12
XO-60
12
XO-62
12
XO-64
12
LARGEST O.D. NOTLARGER THAN INCHES 6-3/4 7 7-1/4 7-1/2 7-3/4 8 8-1/4
COMPLETE
ASSEMBLYLENGTH
PART#
INCHES
XO-66
12
XO-70
12
XO-72
14
XO-74
14
XO-76
14
XO-80
14
XO-82
14
LARGEST O.D. NOT
LARGER THAN INCHES 8-1/2 8-3/4 9 9-1/4 9-1/2 9-3/4 10
S BASED ONMINIMUM BASE
LENGTH
PART#
INCHES
XO-84
14
XO-86
14
XO-90
16
XO-92
16
XO-94
16
XO-96
16
XO-10
16
LARGEST O.D. NOT
LARGER THAN INCHES 10-1/4 10-1/2 10-3/4 11 11-1/4 11-1/2 11-3/4
COMPLETEASSEMBLY
LENGTH
PART#
INCHES
XO-102
16
XO-104
16
XO-106
16
XO-11
16
XO-112
16
XO-114
16
XO-116
16
LARGEST O.D. NOTLARGER THAN INCHES 12 12-1/4 12-1/2 12-3/4 13 13-1/4 13-1/2
COMPLETE
ASSEMBLY
LENGTH
PART#
INCHES
XO-12
16
XO-122
16
XO-124
16
XO-126
16
XO-13
16
XO-132
16
XO-134
16
LARGEST O.D. NOT
LARGER THAN INCHES 13-3/4 14
COMPLETE
ASSEMBLY
LENGTH
PART#
INCHES
XO-136
16
XO-14
16