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Document Text Contents
Page 1

Engineering Data: GUIBERSON GW Packer Cups
Includes GW-SS and GWD-HD

Page 2

2

GW Cup-Type Packers and Cups

Tubing and Casing Cup-Type Packers

Cameron’s GUIBERSON® GW packer is available in a full range of tubing and casing sizes, in

two-cup or four-cup models and with either standard or special-purpose cups. In its simplest

form, the two-cup GW has a one-piece seamless steel mandrel with box-up and pin-down

connections. It has no slips; no latch or locking mechanism to be fouled by sand, shale or mud;

it does not require tubing weight to be set; and it packs off equally well at any point in the hole.

The GW packer is offered in two types, GW-SS and GW-SP. Simplicity of design, rugged

construction and unusually low cost make the GW attractive to the operator for a wide variety

of applications.

GW-SS Packer

The GW-SS packer has a seamless steel mandrel with an extra-large opening. GW-SS, GW-HD

and GW-ST cups fit this packer. It is suitable for all applications involving normal pressures.

GW-HD cups contain two rows of interlocking steel springs for extra reinforcement during

rugged service. Thermal GW-ST cups have the same reinforcement for extrusion protection for

its special elastomer. GW-ST cups are recommended for use in steam injection applications at

maximum injection pressures of 1200 psi and for temperatures to 550° F (288° C).

GW-SP Packer

The GW-SP packer has a full-opening, thick-wall seamless steel mandrel, making it ideal for

rugged, high-pressure applications. GW-SP cups fit this packer.

Heavy-Duty GWD-HD

The GWD-HD is a heavy-duty packer cup that incorporates two rows of interlocking steel

springs as molded-in reinforcement. This unique design makes the cup especially effective in

high-pressure, rugged applications such as testing and fracturing. This cup fits the Standard

GW packer.

CP Cup

The Type CP casing packer cup is a one-piece unit designed for use between casing strings. The

CP cup is used as a liner and a means of sealing inner string, and for protecting low-pressure

productive sands during cementing, acidizing and similar operations. Call for sizes and pricing.

Page 3

3

TUBING/CASING GW-SS
(Std. Service)

GWD-HD
(Hvy. Duty)

GWD-ST
(Steam)

OBSOLETE
(Spci-GW)

GWD-SP
(Seal Pos.)

GWD-HD
HNBROD (inches) Weight (lb)

2-3/8 4.6 3E-10716

2-7/8
6.4
8.8

3E-10047
3E-10047-002

-

3-1/8 3E-16370

3-1/2
8.5 - 10.2

12.8 - 13.2
3E-14960
3E-14082

3E-14960-002
-

3E-16146 3E-92737-001

4
9.5

10.8 - 11.9
3E-14036
3E-14036

3E-54136 3E-54136-001

4-1/2
9.5 - 12.6

13.5 - 18.1
3E-30509
3E-10430

3E-54864
3E-54430

3E-30509-002
3E-10430-002

3E-54864-001
3E-54430-001

5
13 - 15
18 - 21

3E-25389
3E-17831

3E-54865
3E-54866

3E-54865-001
3E-54866-001

5-1/2
13 - 15

15.5 - 17
17 - 23

3E-22624
3E-22626
3E-19710

3E-93989
3E-54752
3E-54760

3E-87318
3E-87317
3E-87316

3E-13654
3E-15277
3E-13657

3E-30848
3E-30847
3E-30846

3E-93989-001
3E-54752-001
3E-54760-001

5-3/4 14 - 17 3E-14714

6
14 - 18

20
3E-14721
3E-14714

3E-54721
3E-54714

3E-14721-002
3E-14714-002

3E-16178
3E-54721-001
3E-54714-001

6-5/8
20 - 22
24 - 28

32

3E-19389
3E-19277
3E-19278

3E-54872
3E-54870
3E-54795

3E-87319
3E-54870-002

-

-
3E-14962
3E-15490

-
3E-30851
3E-30850

3E-19389-001
3E-54870-001
3E-54795-001

7
17 - 20
22 - 24
26 - 30

3E-17819
3E-17461
3E-17356

3E-54819
3E-54796
3E-54810

3E-87322
3E-87323
3E-87321

3E-14648
3E-14650
3E-14649

3E-30854
3E-30853
3E-30852

3E-54819-001
3E-54796-001
3E-54810-001

7-5/8
26.4 - 29.7
29.7 - 33.7

39

3E-19391
3E-21293
3E-23051

3E-54391
3E-54825
3E-54051

3E-54391-001
3E-54825-001
3E-54051-001

8 26 3E-93421

8-5/8
28 - 36
36 - 40
40 - 49

3E-16111
3E-16113
3E-16115

3E-87326
3E-87325
3E-87327

3E-16110
3E-16112
3E-16114

9 40 - 45 3E-15941 3E-54941 3E-15941-002 3E-15942 3E-54941-001

9-5/8
36 - 43.5
47 - 53.5

3E-10354
3E-33850

3E-54032
3E-54850

3E-90100
-

3E-14970
-

3E-54032-001
-

10-3/4
32.5-55.5
55.5-65.7

3E-13197
3E-13198

3E-54034
3E-54198

3E-13197-002
3E-54034-001
3E-54198-001

11-3/4 38 - 60 3E-14246 3E-54246-003 3E-54246-001

13-3/8 48 - 72 3E-16298 3E-54298 3E-16298-002 3E-54298-001

Type GW Packer Cups

Page 4

4

OD
Tubing &
Casing
(inches)

Weight (lb)
ID

(inches)
Cup Part
Number

Thimble Part
Number

Cup Major
Diameter
(inches)

A

Cup Minor
Diameter
(inches)

B

Thimble
OD

(inches)
C

Cup Heel
Diameter
(inches)

D

Cup & Thimble
Height
(inches)

E

Sleeve
OD

(inches)
F

Cup
ID

(inches)
G

Thimble
Height
(inches)

H

Bushing
Length
(inches)

J

Cup
Length
(inches)

K

Cup Heel
Angle

(degrees)
L

Thimble Flange
Thickness
(inches)

M

2-3/8 4.6 - 4.7 1.995 3E-10716 3E-6435 2.000 1.915 1.875 1.312 3.625 1.250 1.094 1.000 0.875 3.250 69 0.375
2-7/8 6.4 2.441 3E-10047 3E-6436 2.490 2.365 2.260 1.750 3.812 1.500 1.343 1.190 1.250 3.435 75 0.375

3-1/2
8.5 - 10.2

3.018
2.922

3E-14960 3E-6439 3.020 2.900 2.750 2.125 4.000 1.500 1.344 1.375 1.446 3.625 75 0.375

12.7 - 13.3
2.750
2.674

3E-14082 3E-14085 2.770 2.610 2.438 1.750 4.000 1.500 1.344 1.380 1.306 3.625 75 0.375

4 9.5 - 11
3.548
3.476

3E-14036 3E-6696 3.510 3.397 3.250 2.660 3.750 2.130 1.938 1.380 1.190 3.250 75 0.500

4-1/2 9.5 - 12.6
4.090
3.958

3E-30509 3E-18319 4.120 3.938 3.688 2.937 4.750 2.625 2.406 1.937 1.437 4.250 70 0.500

4-1/2 DP 13.5 - 18.1 3.92 3E-10430 3E-16297 3.910 3.723 3.500 2.937 4.000 2.625 2.406 1.937 1.437 3.500 70 0.500

5
13 - 15

4.494
4.408

3E-25389 3E-6448 4.500 4.313 4.125 2.937 5.500 2.625 2.406 1.937 1.437 4.250 70 0.500

18 - 21
4.276
4.154

3E-17831 3E-6754 4.300 4.130 4.000 2.937 5.500 2.625 2.406 1.812 1.437 4.250 70 0.500

5-1/2

13 - 15
5.044
4.974

3E-22624 3E-18320 5.100 4.910 4.625 3.687 5.500 3.250 2.910 1.625 1.437 5.000 76 0.500

15.5 - 17
4.950
4.892

3E-22626 3E-18320 5.010 4.820 4.625 3.687 5.500 3.250 2.910 1.625 1.437 5.000 76 0.500

17 - 20
4.892
4.779

3E-19710 3E-18320 4.920 4.670 4.625 3.687 5.500 3.250 2.910 1.625 1.437 5.000 76 0.500

23 4.67 3E-19710 3E-23230 4.920 4.670 4.500 3.682 5.500 3.250 2.910 1.625 1.437 5.000 76 0.500

6-5/8 and 7
20 - 22

6.049
5.989

3E-19389 3E-18322 6.120 5.925 5.625 4.500 5.625 4.000 3.525 1.812 1.250 5.000 70 0.630

32 - 35.3
6.094
6.000

3E-19389 3E-18322 6.120 5.925 5.625 4.500 5.625 4.000 3.525 1.812 1.250 5.000 70 0.630

6-5/8 and 7
24 - 28

5.921
5.791

3E-19277 3E-18322 5.940 5.705 5.625 4.500 5.625 4.000 3.525 1.812 1.250 5.000 70 0.630

38 5.920 3E-19277 3E-18322 5.940 5.705 5.625 4.500 5.625 4.000 3.525 1.812 1.250 5.000 70 0.630

7

17 - 20
6.538
6.456

3E-17819 3E-17542 6.560 6.316 6.000 5.000 6.250 4.000 3.525 1.875 1.250 5.000 70 0.630

22 - 24
6.398
6.336

3E-17461 3E-17542 6.450 6.204 6.000 5.000 6.250 4.000 3.525 1.875 1.250 5.000 73 0.630

26 - 30
6.276
6.154

3E-17356 3E-17543 6.330 6.090 5.875 5.000 6.250 4.000 3.525 1.687 1.250 5.63 73 0.630

7-5/8

26.4 - 29.7
6.969
6.875

3E-19391 3E-6366 7.055 6.862 6.375 5.000 6.250 4.000 3.525 1.687 1.250 5.625 73 0.630

29.7 - 33.7
6.875
6.765

3E-21293 3E-6366 6.910 6.745 6.375 5.000 6.250 4.000 3.525 1.687 1.250 5.625 73 0.630

39 6.625 3E-23051 3E-6366 6.688 6.470 6.375 5.000 6.250 4.000 3.525 1.687 1.250 5.625 73 0.630

8-5/8

28 - 36
7.807
7.825

3E-16111 3E-17545 8.060 7.795 7.375 6.500 6.375 5.000 4.531 1.937 1.502 5.625 75 0.750

36 - 40
7.825
7.725

3E-16113 3E-17545 7.880 7.680 7.375 6.500 6.375 5.000 4.531 1.937 1.502 5.625 75 0.750

40 - 49
7.725
7.511

3E-16115 3E-17545 7.760 7.480 7.375 6.500 6.375 5.000 4.531 1.937 1.562 5.625 75 0.750

9 40 - 45
8.150
8.030

3E-15941 3E-17545 8.170 8.000 7.375 6.500 6.375 5.000 4.531 1.937 1.562 5.625 75 0.750

9-5/8
36 - 43.5

8.891
8.735

3E-10354 3E-17575 8.950 8.730 8.250 7.250 7.000 5.000 4.531 2.312 1.437 6.000 75 1.000

47 - 53.5
8.662
8.520

3E-33850 3E-34702 8.781 8.375 8.125 7.250 7.010 5.000 4.531 2.312 1.437 6.000 75 1.000

10-3/4
32.8 - 55.5

10.191
9.760

3E-13197 3E-1478 10.210 9.776 9.500 8.060 8.000 5.000 4.531 2.750 1.562 7.000 70 1.000

60.7-65.7
9.760
9.560

3E-13198 3E-31708 9.945 9.479 9.136 8.060 8.000 5.000 4.531 2.750 1.475 7.000 70 1.000

11-3/4 38 - 60
11.150
10.772

3E-14246 3E-14248 11.170 10.752 10.375 8.062 8.000 5.000 4.531 2.750 1.562 6.875 70 1.000

13-3/8 48 - 72
12.715
12.347

3E-16298 3E-16312 12.739 12.305 11.875 9.625 9.000 6.000 4.531 4.000 1.562 7.500 70 1.500

.13 R

.5 R



M
THIMBLE
FLANGE

THICKNESS

J
BUSHING
LENGTH

K
CUP LENGTH

E
CUP & THIMBLE LENGTH

A
MAJOR

DIA
F

SLEEVE
OD

H
THIMBLE HEIGHT

G
CUP ID

D
CUP HEEL

DIA

C
THIMBLE

OP

B
CUP

MINOR
DIA

PACKER CUP
GW-SS

GWD-HD

GW-SS and GWD-HD

Page 5

5

OD
Tubing &
Casing
(inches)

Weight (lb)
ID

(inches)
Cup Part
Number

Thimble Part
Number

Cup Major
Diameter
(inches)

A

Cup Minor
Diameter
(inches)

B

Thimble
OD

(inches)
C

Cup Heel
Diameter
(inches)

D

Cup & Thimble
Height
(inches)

E

Sleeve
OD

(inches)
F

Cup
ID

(inches)
G

Thimble
Height
(inches)

H

Bushing
Length
(inches)

J

Cup
Length
(inches)

K

Cup Heel
Angle

(degrees)
L

Thimble Flange
Thickness
(inches)

M

2-3/8 4.6 - 4.7 1.995 3E-10716 3E-6435 2.000 1.915 1.875 1.312 3.625 1.250 1.094 1.000 0.875 3.250 69 0.375
2-7/8 6.4 2.441 3E-10047 3E-6436 2.490 2.365 2.260 1.750 3.812 1.500 1.343 1.190 1.250 3.435 75 0.375

3-1/2
8.5 - 10.2

3.018
2.922

3E-14960 3E-6439 3.020 2.900 2.750 2.125 4.000 1.500 1.344 1.375 1.446 3.625 75 0.375

12.7 - 13.3
2.750
2.674

3E-14082 3E-14085 2.770 2.610 2.438 1.750 4.000 1.500 1.344 1.380 1.306 3.625 75 0.375

4 9.5 - 11
3.548
3.476

3E-14036 3E-6696 3.510 3.397 3.250 2.660 3.750 2.130 1.938 1.380 1.190 3.250 75 0.500

4-1/2 9.5 - 12.6
4.090
3.958

3E-30509 3E-18319 4.120 3.938 3.688 2.937 4.750 2.625 2.406 1.937 1.437 4.250 70 0.500

4-1/2 DP 13.5 - 18.1 3.92 3E-10430 3E-16297 3.910 3.723 3.500 2.937 4.000 2.625 2.406 1.937 1.437 3.500 70 0.500

5
13 - 15

4.494
4.408

3E-25389 3E-6448 4.500 4.313 4.125 2.937 5.500 2.625 2.406 1.937 1.437 4.250 70 0.500

18 - 21
4.276
4.154

3E-17831 3E-6754 4.300 4.130 4.000 2.937 5.500 2.625 2.406 1.812 1.437 4.250 70 0.500

5-1/2

13 - 15
5.044
4.974

3E-22624 3E-18320 5.100 4.910 4.625 3.687 5.500 3.250 2.910 1.625 1.437 5.000 76 0.500

15.5 - 17
4.950
4.892

3E-22626 3E-18320 5.010 4.820 4.625 3.687 5.500 3.250 2.910 1.625 1.437 5.000 76 0.500

17 - 20
4.892
4.779

3E-19710 3E-18320 4.920 4.670 4.625 3.687 5.500 3.250 2.910 1.625 1.437 5.000 76 0.500

23 4.67 3E-19710 3E-23230 4.920 4.670 4.500 3.682 5.500 3.250 2.910 1.625 1.437 5.000 76 0.500

6-5/8 and 7
20 - 22

6.049
5.989

3E-19389 3E-18322 6.120 5.925 5.625 4.500 5.625 4.000 3.525 1.812 1.250 5.000 70 0.630

32 - 35.3
6.094
6.000

3E-19389 3E-18322 6.120 5.925 5.625 4.500 5.625 4.000 3.525 1.812 1.250 5.000 70 0.630

6-5/8 and 7
24 - 28

5.921
5.791

3E-19277 3E-18322 5.940 5.705 5.625 4.500 5.625 4.000 3.525 1.812 1.250 5.000 70 0.630

38 5.920 3E-19277 3E-18322 5.940 5.705 5.625 4.500 5.625 4.000 3.525 1.812 1.250 5.000 70 0.630

7

17 - 20
6.538
6.456

3E-17819 3E-17542 6.560 6.316 6.000 5.000 6.250 4.000 3.525 1.875 1.250 5.000 70 0.630

22 - 24
6.398
6.336

3E-17461 3E-17542 6.450 6.204 6.000 5.000 6.250 4.000 3.525 1.875 1.250 5.000 73 0.630

26 - 30
6.276
6.154

3E-17356 3E-17543 6.330 6.090 5.875 5.000 6.250 4.000 3.525 1.687 1.250 5.63 73 0.630

7-5/8

26.4 - 29.7
6.969
6.875

3E-19391 3E-6366 7.055 6.862 6.375 5.000 6.250 4.000 3.525 1.687 1.250 5.625 73 0.630

29.7 - 33.7
6.875
6.765

3E-21293 3E-6366 6.910 6.745 6.375 5.000 6.250 4.000 3.525 1.687 1.250 5.625 73 0.630

39 6.625 3E-23051 3E-6366 6.688 6.470 6.375 5.000 6.250 4.000 3.525 1.687 1.250 5.625 73 0.630

8-5/8

28 - 36
7.807
7.825

3E-16111 3E-17545 8.060 7.795 7.375 6.500 6.375 5.000 4.531 1.937 1.502 5.625 75 0.750

36 - 40
7.825
7.725

3E-16113 3E-17545 7.880 7.680 7.375 6.500 6.375 5.000 4.531 1.937 1.502 5.625 75 0.750

40 - 49
7.725
7.511

3E-16115 3E-17545 7.760 7.480 7.375 6.500 6.375 5.000 4.531 1.937 1.562 5.625 75 0.750

9 40 - 45
8.150
8.030

3E-15941 3E-17545 8.170 8.000 7.375 6.500 6.375 5.000 4.531 1.937 1.562 5.625 75 0.750

9-5/8
36 - 43.5

8.891
8.735

3E-10354 3E-17575 8.950 8.730 8.250 7.250 7.000 5.000 4.531 2.312 1.437 6.000 75 1.000

47 - 53.5
8.662
8.520

3E-33850 3E-34702 8.781 8.375 8.125 7.250 7.010 5.000 4.531 2.312 1.437 6.000 75 1.000

10-3/4
32.8 - 55.5

10.191
9.760

3E-13197 3E-1478 10.210 9.776 9.500 8.060 8.000 5.000 4.531 2.750 1.562 7.000 70 1.000

60.7-65.7
9.760
9.560

3E-13198 3E-31708 9.945 9.479 9.136 8.060 8.000 5.000 4.531 2.750 1.475 7.000 70 1.000

11-3/4 38 - 60
11.150
10.772

3E-14246 3E-14248 11.170 10.752 10.375 8.062 8.000 5.000 4.531 2.750 1.562 6.875 70 1.000

13-3/8 48 - 72
12.715
12.347

3E-16298 3E-16312 12.739 12.305 11.875 9.625 9.000 6.000 4.531 4.000 1.562 7.500 70 1.500

Page 6

6

DOWNHOLE ENVIRONMENT

NATURAL
RUBBER

NITRILE
Soft/

Medium
(60-85 Duro)

NITRILE
Hard

(85+ Duro)

HNBR
Sulfur Cured

HNBR
Peroxide

Cured
NEOPRENE

EPDM
Peroxide

Cured

VITON/FLUOREL(1)
(High-Fluorine

Fluorel)
AFLAS HYDRIN

Standard Oilfield Service(2) OK-? OK OK OK OK OK NR OK OK OK

Sour Service (in H2S) NR NR NR ?(3) OK(3) ? OK OK OK NR

Carbon Dioxide (CO2) NR ? OK ? ? ? OK OK OK OK

Explosive Decompression(4) NR NR OK ? ? NR NR ? OK OK

Zinc or Calcium Bromide NR NR NR ? ? ? OK OK OK -

Methane, Natural Gas ? ? ? ? ? ? ? OK OK OK

Steam (above 300° F or 149° C) NR NR NR NR OK NR OK ? OK NR

Strong Acid (HCl, HF): Cold NR ? ? ? ? ? OK OK OK ?

Strong Acid: Hot (above 200° F or 93° C) NR NR NR NR NR NR NR OK OK NR

Water-Based Amine Inhibitors NR OK OK OK OK OK OK NR OK NR

Oil-Based Amine Inhibitors NR NR NR NR NR NR NR NR OK NR

High pH Fluids (Alkaline)(5) ? ? ? ? ? ? OK NR OK ?

Aromatic Solvents(6) NR NR NR NR NR NR NR OK ? NR

Halogenated Solvents(7) NR NR NR NR NR NR NR OK OK NR

Cost Factor: for material only(8) 0.9 1.0 1.1 4.0 6.5 1.3 1.5 11 17 2.9

Maximum(9) Temperature Limit
° F 250° 275° 275° 325° 350° 250° 550° 400° 450° 275°

(° C) (121°) (135°) (135°) (163°) (177°) (121°) (288°) (204°) (232°) (135°)

(This chart offers a general guideline for the use of various elastomers in downhole oilfield applications.
See the notes below the chart for some of the specific assumptions and discussion.)

NOTES:
(1) Viton and Fluorel are very similar, except in a few applications.
(2) Standard Service – crude oil, natural gas, brine, most drilling muds, etc.
(3) HBNR can be used in H2S up to a concentration of 10% (sulfur cured) or 15% (peroxide cured).
(4) Explosive Decompression can be controlled using a proper bleed-off procedure.
(5) Use of Nitrile or HBNR in High pH depends on type of fluid, temperature and concentration.
(6) Aromatic Solvents include: benzene, xylene, MEK, toluene, etc.
(7) Halogenated Solvents include: carbon tetrachloride, trichloroethylene, trichlorethane, etc.
(8) Cost Factor: a guideline only; refers only to the cost of the material (compound).
(9) Maximum Temperature Limit: Listed is the temperature above which serious deterioration of the rubber is likely to occur. This is for applications having

a good backup system for the rubber (such as O-rings with backup rings, packer elements with petal plates or garter springs, etc.)

Rod Guides, Drillpipe Protectors and Control Line Protectors seem to perform well up to 250° F (121° C) due to the specialized rubber compounding
used in the products.

For applications having no backup system, such as all rubber swab cups, the practical limit is 200° F (93° C), due to softening of the rubber. Having a
limited backup system, such as wire reinforced swab cups or standard packer cups, the practical temperature limit is 225° F (107° C).

OK - Recommended for this service NR - Not recommended ? - Questionable or depends on more factors

Type GW Packer Cups

Page 7

7

Cameron’s GUIBERSON GW packer cups have been an industry performance leader for more than 50 years. As

part of a continuing improvement process, performance verification was done on production GW packer cups.

The cups were 22- to 24-lb, 7” cups taken from stock.

Oil-resistant nitrile rubber (NBR) and hydrogenated nitrile rubber (HNBR) GW packers cups were tested in

hydrocarbon oil from ambient temperature to 350° F (177° C) to simulate typical oilfield applications. Test

pressure was applied in discrete steps that varied with the test temperature shown. The test pressure was held

for one hour at each step. These temperature/pressure tests were repeated for three cycles followed by the

same pressure steps at ambient temperature. Both the NBR and HNBR GUIBERSON packer cups successfully

passed this performance verification.

Ethylene propylene diene (EPDM) GW packer cups were tested in water/steam to a similar test sequence

but at higher temperatures and lower pressures to simulate requirements in the field for steam injection or

SAG D. The first two temperature cycles were performed to 550° F (288° C). Again, the GUIBERSON packer

cups successfully completed performance verification.

GUIBERSON GW Packer Cup Performance Verification

Pressure (psi) Temperature

8000 100° F (38° C)

7500 150° F (66° C)

7500 200° F (93° C)

6000 250° F (121° C)

3000 300° F (149° C)

2500 350° F (177° C)

Pressure (psi) Temperature

1200 400° F (204° C)

1200 450° F (232° C)

1200 500° F (260° C)

1200 550° F (288° C)

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