sect-6 repair & remedial.pdf

8/10/2019 Sect-6 REPAIR & REMEDIAL.pdf

http://slidepdf.com/reader/full/sect-6-repair-remedialpdf 1/20

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


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


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


Construction 19

How To Order 19-20



SECTION 6 – CASING ROLLER

2

Casing Roller Assembly

Gotco 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




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




6


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




7


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



SECTION 6 – CASING SCRAPER

8

Casing Scraper Assembly

Blades

Center Ring

Springs

Body

Top Connection

Retaining

Screws

Casing Scraper-Exploded View




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.




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.



SECTION 6 – CASING PATCH, LEAD SEAL TYPE

11

Lead Seal Casing Patch Assembly




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



Name and Number of Assembly or Part.

2)

Casing O.D.

3)

Size and Type of Thread




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


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)


CENTER SEALRING


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


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


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)


CENTER SEALRING




SECTION 6 – CASING PATCH, PACKER TYPE

14

Top Sub Protector

Packer

Barrel

Basket Grapple

Mill Control Packer

GuideExploded Assembly View




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.




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.




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.


When Ordering Please Specify:

1)

Name and Number of Assembly or Part.

2)

Casing O.D.

3) Size and Type of Thread




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


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


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



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.



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



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

sect-6 repair & remedial.pdf

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