HW Weatherford 07b - Gma

TECHNICAL DATA HANDBOOK

HEAVY WEIGHT DRILL PIPE (HWDP)

Thick Walled pipe called Heavy Weight Drill Pipe (HWDP) was developed to provide gradual transition from the heavy drill collar to the relatively light weight drill pipe. This intermediate-weight pipe has a wall thickness of approximately 1", and helps to prevent stress concentration at the top of the drill collar. It, also, allows you to drill at a higher rpm, reducing toque and differential pressure sticking. HWDP is intended primarily for directional drilling. Because it bends easily, it simplifies directional control and minimizes connection fatigue problems common to high-angle or horizontal drilling. The reduced number of pipe failures and increased drill-stem service, also, make HWDP appropriate for some straight-hole applications. Various Combinations of HWDP, drill collars, and standard drill string can be created to meet the challenge of severe drilling conditions.

7 - 76

© 2002 Weatherford. All Rights Reserved


57.15

47.53

4 101.60

2 1/8 53.98 2 50.80 2 1/16 52.39 2 1/4 57.15 2 1/4 57.15 2 1/4 57.15 2 1/16 52.39 2 9/16 65.09 2 9/16 65.09 2 9/16 65.09 2 9/16 65.09 2 1/4

12.50 18.60 17.00 25.30 23.46 34.91 23.70 35.27 23.96 35.66 23.96 35.66 25.65 38.17 27.93 41.56 28.40 42.26 29.90 44.50 29.92 44.53 31.94

I

W

W

W

I

W

W

W

W

I

I

W

2 7/8 73.03 3 1/16 77.79 3 1/2 88.90

in mm

lb/ft kg/m

in mm

Tube I.D.

Weight HW* w/Tool Type Joints

Nom. Size "A"

114.30

3 3/8 85.73 3 7/8 98.43 4 101.60 4 101.60 4 101.60 4 101.60 4 101.60 4 1/2 114.30 4 1/2 114.30 4 1/2 114.30 4 1/2 114.30 4 1/2

in mm

Center Upset "C"

104.78

N/A N/A N/A N/A 3 5/8 92.08 3 7/8 98.43 3 5/8 92.08 3 5/8 92.08 3 7/8 98.43 4 1/8 104.78 4 1/8 104.78 N/A N/A 4 1/8 104.78 4 1/8

in mm

Upset Diam. "B"

420,300

161,900 72,000 464,700 206,700 691,000 307,300 310,400 138,000 310,500 138,100 310,500 138,100 345,500 153,600 815,200 362,600 407,600 181,300 407,500 181,200 407,600 181,300 944,900

lb daN

Tube Tensile Yield

81,000

8,600 11,600 24,400 33,000 39,200 53,100 18,400 24,900 18,500 25,000 18,500 25,000 19,600 26,500 55,300 74,900 27,600 37,400 27,600 37,400 27,600 37,400 59,800

ft.lb N.m

Tube Torsion Yield

Tool Joint O.D. "D" in mm

3 1/2 XH

120.65

3 3/4 95.25 2 7/8 SL H-90 3 7/8 98.43 3 1/2 SH 4 1/8 2 7/8 API IF, NC26 104.78 3 1/2 IF 4 3/4 120.65 3 1/2 IF 4 7/8 NC38 123.83 3 1/2 HT38 4 7/8 123.83 3 1/2 API IF 4 3/4 NC38 120.65 4 SH 4 3/4 3 1/2 XH 120.65 HT38 4 7/8 123.83 4 FH 5 1/4 NC40 133.35 4 FH 5 1/4 NC40 133.35 4 SH 4 3/4

2 7/8 SL H-90

Connection Type

57.15

2 1/8 53.98 2 50.80 2 1/16 52.39 2 1/4 57.15 2 5/16 58.74 2 5/16 58.74 2 3/16 55.56 2 9/16 65.09 2 9/16 65.09 2 9/16 65.09 2 5/8 66.68 2 1/4

in mm

Tool Joint I.D.

266,500

346,300 154,000 406,900 180,900 432,500 192,300 724,900 322,400 700,400 311,500 700,400 311,500 749,000 333,100 469,400 208,700 591,100 262,900 768,400 341,800 740,400 329,300 599,300

lb daN

T.J. Tensile Yield

24,400

9,900 13,400 12,000 16,200 11,500 15,500 17,500 23,700 21,000 28,400 30,700 41,600 17,600 23,800 14,000 18,900 27,000 36,600 25,300 34,300 24,500 33,200 18,000

ft.lb N.m

T.J. Torsion Yield

12,800

5,080 6,800 6,100 8,200 6,200 8,400 9,900 13,400 11,600 15,700 18,400 24,900 10,500 14,200 7,400 10,000 16,200 21,900 14,400 19,500 12,900 17,400 9,500

Max. Make Up Torque ft.lb N.m

HEAVY WEIGHT DRILL PIPE DIMENSIONAL / MECHANICAL PROPERTIES

2.571

0.187 2.32 0.163 2.02 0.173 2.15 0.207 2.57 0.208 2.58 0.208 2.58 0.176 2.19 0.268 3.328 0.268 3.33 0.268 3.33 0.270 3.35 0.207

gal/ft. L/m

Cap. With T.J.

6.073

0.195 2.42 0.262 3.25 0.359 4.46 0.355 4.41 0.366 4.55 0.366 4.55 0.392 4.87 0.427 5.303 0.434 5.39 0.457 5.68 0.458 5.69 0.489

gal/ft. L/m

Disp. With T.J.


7 - 77

7 - 78

41.45 61.68 50.38 74.97 46.70 69.50 46.70 69.50 55.62 82.77 62.41 92.88 61.63 91.72 57.42 85.45 62.31 92.73 71.43 106.30 75.02 111.64

4 1/2 114.30 5 127.00 5 1/2 139.70

I

W

I

W

W

W

I

W

I

W

2 3/4 69.85 3 76.20 4 101.60 4 101.60 3 1/2 88.90 3 1/4 82.55 3 1/4 82.55 4 101.60 5 127.00 4 1/2 114.30 4 1/2 114.30

in mm

Tube I.D.

5 127.00 5 1/2 139.70 6 152.40 6 152.40 6 152.40 6 152.40 6 152.40 6 3/8 161.93 7 1/4 184.15 7 1/4 184.15 7 1/4 184.15

in mm

Center Upset "C"

4 5/8 117.48 5 1/8 130.18 5 5/8 142.88 5 5/8 142.88 5 5/8 142.88 5 5/8 142.88 5 5/8 142.88 6 152.40 6 3/4 171.45 6 15/16 176.21 6 3/4 171.45

in mm

Upset Diam. "B"

548,100 243,800 691,200 307,400 1,119,200 497,800 615,500 273,700 1,413,700 628,800 850,400 378,200 850,400 378,200 799,800 355,700 1,483,700 659,900 1,021,600 454,400 1,857,400 826,200

lb daN

Tube Tensile Yield

Connection Type

4 1/2 XH 40,700 55,100 4 API IF, NC46 56,500 5 XH 76,600 4 1/2 API IF, NC50 113,100 5 1/2 API FH 153,300 62,200 5 1/2 API FH 84,300 131,300 5 1/2 API FH 178,000 75,900 5 1/2 HT55-375 102,900 75,900 5 1/2 API FH 102,900 82,700 5 7/8 XT57 112,100 185,500 6 5/8 API FH 251,500 118,900 6 5/8 API FH 161,200 216,100 6 5/8 API FH 292,900

ft.lb N.m

Tube Torsion Yield

6 1/4 158.75 6 5/8 168.28 7 1/4 184.15 7 1/4 184.15 7 177.80 7 3/8 187.33 7 1/4 184.15 7 177.80 8 1/2 215.90 8 203.20 8 1/2 215.90

Tool Joint O.D. "D" in mm 2 7/8 73.03 3 1/16 77.79 4 101.60 4 101.60 3 1/2 88.90 4 101.60 3 5/16 84.14 4 101.60 5 127.00 4 1/2 114.30 4 1/2 114.30

in mm

Tool Joint I.D. ft.lb N.m

T.J. Torsion Yield

1,024,500 38,800 455,700 52,600 1,265,500 51,600 562,900 69,900 1,054,800 47,000 469,100 63,700 1,054,800 47,000 469,100 63,700 1,349,400 52,400 600,200 71,000 1,054,800 65,000 469,100 88,100 1,499,700 65,000 667,000 88,100 1,169,300 88,500 520,100 119,900 1,207,000 62,400 536,900 84,600 1,580,100 73,200 702,800 99,200 1,580,100 82,000 702,800 111,100

lb daN

T.J. Tensile Yield

20,000 27,100 26,800 36,300 24,300 32,900 24,300 32,900 31,200 42,300 39,000 52,800 33,600 45,500 53,100 71,900 32,000 43,300 42,100 57,000 42,100 57,000

Max. Make Up Torque ft.lb N.m

Notes: (1) * Heavy Weight Drill Pipe Type : W = Welded Tool Joints, I = Integral Tool Joints. For Welded Tool Joints (W): Tube Tensile Yield is 55,000 psi For Integral Tool Joints (I) : Tube Tensile Yield is 110,000 psi for pipe less than 5 1/2 O.D. and 100,000 psi for 5 1/2 an larger pipe O.D. (2) Drift diameter = I.D. minus .125 inches

5 7/8 149.23 6 5/8 168.28

lb/ft kg/m

in mm

W

Weight HW* w/Tool Type Joints

Nom. Size "A"

HEAVY WEIGHT DRILL PIPE DIMENSIONAL / MECHANICAL PROPERTIES

0.313 3.887 0.369 4.58 0.653 8.11 0.653 8.11 0.500 6.21 0.463 5.75 0.433 5.378 0.653 8.11 1.020 12.67 0.826 10.26 0.826 10.26

gal/ft. L/m

Cap. With T.J.

0.635 7.886 0.771 9.58 0.717 8.90 0.717 8.90 0.851 10.57 0.955 11.86 0.943 11.711 0.878 10.90 0.953 11.84 1.093 13.57 1.148 14.26

gal/ft. L/m

Disp. With T.J.




 HWDP GRANT PRIDECO SPIRAL-WATE D Spiral-Wate Heavy Weight Drill Pipe offers strength, flexibility, weight and unique spiral design to improve drilling efficiency. The full length deep spiral grooves keep drilling mud flowing continuously between the pipe and the well bore, regardless of down hole deviation .This reduces the chances of differential sticking while minimizing tube wear. The full length deep grooved spiral design means your entire intermediate drill string will bend more uniformly with only half the conventional "wear pad" type heavy weight drill pipe, thus eliminating two critical stress areas.

D

C A A

B

B

The Spiral-Wate unique design has eliminated the center wear pad that causes casing wear problems.

A

D

2 9/16", 3 3/16" SPIRAL-WATE


D

3 1/2" - 6 5/8" SPIRAL-WATE

7 - 79

7 - 80

1.975 50.17

1.975 50.17

10.5 15.6

10.5 15.6

2 9/16 65.09

in

4 1/2 114.30

2 3/4 69.85

49.5 73.7

2 9/16 65.09

28.4 42.3

2 3/4 69.85

2 1/4 57.15

32.9 49.0

49.5 73.7

2 9/16 65.09

2 1/2 63.50

27.2 40.5

29.9 44.5

2 1/4 57.15

30.4 45.2

4 101.60

2 1/4 57.15

30.4 45.2

3 1/2 88.90

2 1/8 53.98

15.1 22.5

3 3/16 80.96

mm

lb/ft

kg/m

in

Tube I.D.

Weight w/Tool Joints

mm

Nom. Size "A"

5 127.00

5 127.00

4 1/2 114.30

4 1/2 114.30

4 1/2 114.30

4 101.60

4 101.60

4 101.60

3 5/16 84.14

2 7/8 73.03

2 7/8 73.03

mm

in

Spiral O.D. "B"

4 5/8 117.48

4 5/8 117.48

4 1/8 104.78

4 1/8 104.78

4 1/8 104.78

3 5/8 92.08

3 5/8 92.08

3 5/8 92.08

N/A

N/A

N/A

mm

in

Upset O.D. "C"

548,100 243,800

548,100 243,800

407,600 181,300

944,900 420,300

407,600 181,300

518,400 230,500

310,500 138,100

310,500 138,100

487,700 216,900

230,300 102,400

230,300 102,400

daN

lb

Tube Tensile Yield

40,700 55,100

40,700 55,100

27,600 37,400

59,800 81,000

27,600 37,400

32,900 44,600

18,500 25,000

18,500 25,000

27,000 36,600

11,300 15,300

11,300 15,300

N.m

ft.lb

Tube Torsion Yield

4 1/2 XH (NC46)

4 1/2 XH (NC46)

4 SH (3 1/2 HT 38)

4 SH (3 1/2 XH)

4 FH (NC40)

3 1/2 HT 38

3 1/2 IF (NC 38)

3 1/2 IF (NC 38)

2 7/8 SL H-90

2 3/8 SL H-90 High Torque

2 3/8 SL H-90

Connection Type

6 1/4 158.75

6 1/4 158.75

4 7/8 123.83

4 3/4 120.65

5 1/4 133.35

4 7/8 123.83

4 3/4 120.65

4 7/8 123.83

3 3/4 95.25

3 1/8 79.38

3 1/8 79.38

mm

Tool Joint O.D. "D" in

2 7/8 73.03

2 3/4 69.85

2 9/16 65.09

2 1/4 57.15

2 11/16 68.26

2 1/2 63.50

2 1/4 57.15

2 1/4 57.15

2 1/8 53.98

1.975 50.17

1.975 50.17

mm

in

Tool Joint I.D.

1,024,500 455,700

1,085,200 482,700

595,100 264,700

599,300 266,500

711,700 316,500

622,400 276,800

724,900 322,400

725,000 322,400

398,600 177,300

202,700 90,100

218,500 97,100

daN

lb

T.J. Tensile Yield

38,200 51,700

41,100 55,700

27,000 36,600

18,000 24,400

23,500 31,800

28,600 38,700

17,500 23,700

21,000 28,400

10,600 14,300

6,800 9,200

4,900 6,600

N.m

ft.lb

T.J. Torsion Yield

21,700 29,400

21,300 28,800

16,200 21,900

9,500 12,800

12,400 16,800

17,100 23,100

9,900 13,400

12,000 16,200

5,400 7,300

3,900 5,200

2,500 3,300

N.m

ft.lb

Make Up Torque

0.31 3.838

0.31 3.838

0.268 3.328

0.207 2.57

0.271 3.366

0.255 3.17

0.207 2.57

0.207 2.57

0.184 2.29

0.159 1.97

0.159 1.97

gal/ft. L/m

Cap. With T.J.

GRANT PRIDECO SPIRAL-WATE HWDP PIPE DIMENSIONAL / MECHANICAL PROPERTIES

0.76 9.414

0.76 9.414

0.434 5.390

0.489 6.07

0.458 5.688

0.416 5.17

0.465 5.77

0.465 5.77

0.231 2.87

0.160 1.99

0.160 1.99

gal/ft. L/m

Disp. With T.J.



4 101.60

3 1/2 88.90

4 101.60

4 101.60

4 101.60

59.2 88.1

56.7 84.4

65.2 97.0

55.2 82.1

55.2 82.1

57.5 85.6

5 127.00

5 1/2 139.70

in


5 127.00

73.4 109.2

7 1/8 180.98

7 1/8 180.98

6 3/8 161.93

6 152.40

6 152.40

6 152.40

6 152.40

6 152.40

5 1/2 139.70

mm

in

Spiral O.D. "B"

615,600 273,800

691,200 307,400

daN

lb

Tube Tensile Yield

49,800 67,500

56,500 76,600

N.m

ft.lb

Tube Torsion Yield

639,800 284,500

615,600 273,800

615,200 273,600

615,600 273,800

82,700 112,100

62,200 84,300

62,200 84,300

62,200 84,300

6 3/4 1,483,700 185,500 171.45 659,900 251,500

6 3/4 1,857,400 216,100 171.45 826,200 292,900

6 152.40

5 5/8 142.88

5 5/8 142.88

5 5/8 142.88

5 5/8 1,413,700 131,300 142.88 628,800 178,000

5 5/8 142.88

5 1/8 130.18

mm

in

Upset O.D. "C"

Note: Drift diameter = I.D. minus .125 inches.

4 1/2 114.30

86.1 128.1

6 5/8 168.28

4 101.60

65.4 97.3

5 7/8 149.23

3 76.20

mm

lb/ft

kg/m

in

Tube I.D.

Weight w/Tool Joints

mm

Nom. Size "A"

6 5/8 FH

6 5/8 FH

5 7/8 XT57

5 1/2 HT 55-375

5 1/2 HT 55-375

5 1/2 FH DS55 5 1/2 FH DSTJ

5 1/2 FH

5 1/2 FH

4 1/2 IF (NC50)

Connection Type

8 203.20

8 203.20

7 177.80

7 3/8 187.33

7 177.80

7 177.80

7 177.80

7 1/4 184.15

6 5/8 168.28

mm

Tool Joint O.D. "D" in 1,298,200 577,400

daN

lb

T.J. Tensile Yield

52,400 71,000

47,000 63,700

53,000 71,800

N.m

ft.lb

T.J. Torsion Yield

65,000 88,100

5 1,207,000 127.00 536,900

4 1/2 1,580,100 114.30 702,800

61,400 83,200

73,100 99,100

4 1,169,300 88,500 101.60 520,100 119,900

4 1,054,800 101.60 469,100

64,400 87,300

1,349,400 74,300 600,200 100,700

1,349,400 600,200

4 1,054,800 101.60 469,100

3 1/2 88.90

3 1/2 88.90

4 1,054,800 101.60 469,100

3 76.20

mm

in

Tool Joint I.D.

32,000 43,300

42,100 57,000

53,100 71,900

39,000 52,800

38,600 52,300

44,600 60,400

31,200 42,300

24,300 32,900

27,500 37,200

N.m

ft.lb

Make Up Torque

1.020 12.67

0.826 10.26

0.653 8.11

0.653 8.11

0.653 8.11

0.631 7.837

0.500 6.21

0.653 8.11

0.367 4.56

gal/ft. L/m

Cap. With T.J.

GRANT PRIDECO SPIRAL-WATE HWDP PIPE DIMENSIONAL / MECHANICAL PROPERTIES

1.123 13.95

1.317 16.36

1.000 12.42

0.879 10.92

0.845 10.49

0.845 10.494

0.998 12.39

0.868 10.78

0.905 11.24

gal/ft. L/m

Disp. With T.J.


7 - 81


RECOMMENDED PRACTICE FOR MILL SLOT AND GROOVE METHOD OF DRILL STRING IDENTIFICATION

STANDARD WEIGHT HIGH STRENGTH DRILL PIPE

HEAVY WEIGHT HIGH STRENGTH DRILL PIPE

DRILL PIPE GRADE CODE STANDARD GRADES Grade

Symbol

HIGH STRENGTH GRADES Grade

Symbol

N-80 ................... N

X-95 ................... X

E ......................... E

G-105 ................. G

C-75 ................... C

S-135 ................. S V-150 ................. V

HEAVY WEIGHT GRADE E DRILL PIPE

7 - 82



RECOMMENDED PRACTICE FOR MILL SLOT AND GROOVE METHOD OF DRILL STRING IDENTIFICATION SAMPLE MARKINGS AT BASE OF PIN 1 2 3 4 5 ZZ 6 70 N E 1 - Tool Joint Manufacturer's Symbol ZZ Company (Fictional for example only) 2 - Month Welded 6 - June 3 - Year Welded 70 - 1970

TOOL JOINT MANUFACTURER'S SYMBOL

4 - Pipe Manufacturer's Symbol N - United States Steel Company 5 - Drill Pipe Grade E - Grade E75 Drill Pipe MONTH AND YEAR WELDED Month

Year

1 through 12

Last two digits of year

DRILL PIPE GRADE Grade Symbol E75 .................................... E X95 .................................... X G105 ................................. G S135 .................................. S HEAVY WEIGHT DRILL PIPE (Double Stencil Pipe Grade Symbol)

Tool Joint Manufacturer's Symbol, Month welded, Year welded. Pipe Manufacturer and Drill Pipe Grade Symbol shall be stencilled at the base of pin as shown above. Pipe Manufacturer symbol and Drill Pipe Grade symbol applied shall be as represented by Manufacturer, Supplier, Owner or User documents such as mill certification papers or purchase orders.

Mill

Refer to the eleventh edition 1993 of the IADC Drilling Manual* (Section B-19) for list of Tool Joint Manufacturer's symbols. * Available from: International Association of Drilling Contractors (IADC) P.O. Box 4287, Houston, TX 77210 PIPE MANUFACTURERS (PIPE MILLS OR PROCESSORS) ACTIVE INACTIVE Symbol Mill

Algoma X British Steel Seamless Tubes Ltd Seamless AI Dalmine D Kawasaki H Nippon I NKK K Mannesmann M Reynolds Aluminum RA Sumitomo S Siderca SD Tamsa T US Steel N P Vallourec V Used U Processor Symbol Grant TFW TFW Omsco OMS Prideco PI

Armco B

Symbol A American

B&W W CF & I C J&L J Lone Star L Ohio O Republic R TI Z Tubemuse TU Voest VA Wheeling Pittsburgh Youngstown

Y

The "Manufacturer" may be either a pipe mill or processor. See API Spec 5D, Specification for Drill Pipe. These symbols are provided for pipe manufacturer identification and have been assigned at pipe manufacturer's requests. Manufacturers included in this list may not be current API Spec 5D licensed pipe manufacturers. A list of current licensed pipe manufacturers is available in the Composite List of Manufacturers, (Licensed for Use of the API Monogram.) Pipe mills may upset and heat treat their own drill pipe, or they may have this done according to their own specifications. In either case, the mill's assigned symbol should be used on each drill string assembly since they are the pipe manufacturer. Pipe processors may buy "green" tubes and upset and heat treat these according to their own specifications. In this case, the processor's assigned symbol should be used on each drill string assembly since they are the pipe manufacturer.


7 - 83



7 - 84




NOTE A: Standard weight Grade E drill pipe designed by an asterisk (*) in the drill pipe weight code will have no groove or milled slot for identification. Grade E heavy weight drill pipe will have a milled slot only, in the center of the tong space. NOTE B: Groove radius approximately 3/8 inch. Groove and milled slot to be 1/4 in. deep on 51/4 in. O.D. and larger tool joints, 3/ 16 in. deep on 5 in. O.D. and smaller tool joints. NOTE C: Stencil the grade code symbol and weight code number corresponding to grade and weight of pipe in milled slot of pin. Stencil with 1/4 in. high characters so marking may be read with dril pipe hanging in elevators.

DRILL PIPE WEIGHT CODE 1

2

3

4

Size

Nominal

Wall

Weight

(O.D.)

Wt.

Thickness

inches Lb. per ft. Inches 2-3/8 2-7/8 3-1/2

4

4-1/2

LPB = Pin Tong Space Length (See Table 4.2, Spec 7 of the A.P.I. Drill Stem Design Eighth Edition, pg. 67).

5

5-1/2

6-5/8

Code Number

04.85

.190

1

06.65*

.280

2

06.85

.217

1

10.40*

.362

2

09.50

.254

1

13.30*

.368

2

15.50

.449

3

11.85

.262

1

14.00*

.330

2

15.70

.380

3

13.75

.271

1

16.60*

.337

2

20.00

.430

3

22.82

.500

4

24.66

.550

5

25.50

.575

6

16.25

.296

1

19.50*

.362

2

25.60

.500

3

19.20

.304

1

21.90*

.361

2

24.70

.415

3

25.20*

.330

2

27.70

.362

3

*Designates standard weight for drill pipe


7 - 85

TECHNICAL DATA HANDBOOK CLASSIFICATION OF USED DRILL PIPE (All sizes, weights and grades. Nominal dimension is basis for all calculations.) 1

Class 2

Class 3

Two White Bands

Yellow Bands

Orange Bands

One Center Punch Mark

Two Center Punch Marks

Three Punch Marks

Premium Class Pipe Condition

4

EXTERIOR CONDITIONS A. OD Wear Wall

Remaining wall not less than 80%

Remaining wall not less than 70%

B. Dents and mashes

Diameter reduction not over 3% of OD Diameter reduction not over 3% of OD

Diameter reduction not over 4% of OD Diameter reduction not over 4% of OD

Depth not to exceed 10% of the average adjacent

Depth not to exceed 20% of the average adjacent

Crushing, necking C. Slip area Mechanical damage Cuts2, gouges2

wall

5

wall

D. Stress induced diameter variations 1. Stretched

Diameter reduction not over 3% of OD 2. String shot Diameter increase not over 3% of OD E. Corrosion, cuts, and gouges 1. Corrosion Remaining wall not less that 80% 2. Cuts and gouges Longitudinal Remaining wall not less than 80% Transverse Remaining wall not less than 80% F.

Cracks3

None

Any imperfections or damages exceeding CLASS 2

5

Diameter reduction not over 4% of OD Diameter increase not over 4% of OD Remaining wall not less than 70% Remaining wall not less than 70% Remaining wall not less than 80% None

None

INTERIOR CONDITIONS A. Corrosive pitting Wall B. Erosion and wear Wall

Remaining wall not less than 80% measured from base of deepest pit Remaining wall not less than 80%

C. Cracks3

None

Remaining wall not less than 70% measured from base of deepest pit Remaining wall not less than 70% None

1

The premium classification is recommended for service where it is anticipated that torsional or tensile limits for Class 2 drill pipe and tubing Class shall be identified with two white bands, plus one center punch mark on the 35 degree or 18 degree shoulder of the pin end tool joint. 2 Remaining wall shall not be less than the value in I.E.2, defects may be ground out providing the remaining wall is not reduced below the value shown in I.E.1 of this table and such grinding to be approximately faired into outer contour of the pipe. 3 In any classification where cracks or washouts appear, the pipe will be identified with the red band and considered unfit for further drilling service. 4

An API Recommended Practice 7G inspection cannot be made with drill pipe rubber on the pipe

5

Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge adjacent to the deepest penetration.

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Class 1 ............................................................................................................. One White Bands Premium Class ................................................................................................ Two White Class 2 ........................................................................................................... One Yellow Class 3 ............................................................................................................... One Blue Class 4 ............................................................................................................ One Green Scrap ................................................................................................................... One Red

Tool Joint And Drill Number And Color Pipe Classification of

Color Of Bands Scrap Or Shop Repairable ............................................................. Red Field Repairable ........................................................................... Green

Tool Joint Condition

DRILL PIPE AND TOOL JOINT COLOR CODE IDENTIFICATION


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BLANK

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HW Weatherford 07b - Gma

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