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Drill Pipe

Drill Pipe

Drill Pipe
drill-pipe.jpg
drill-pipe.jpg
Drill Pipe
drill-pipe.jpg
drill-pipe.jpg

Conventional drill pipes are processed in strict accordance with the API 5DP standard, using internationally advanced thickening technology, heat treatment technology, friction welding technology and advanced production and testing equipment, not only providing users with conventional drills covering all API standard specifications and steel grades At the same time, through independent research and development to provide users with a variety of special and high-end products to meet the differentiated and personalized needs of customers.


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1. Apply WOB to the drill bit;

2. Ensure the necessary strength under compression conditions;

3. Reduce the vibration, swing, and jump of the drill bit, so that the drill bit works smoothly;

4. Control well deviation



Product specifications

1) Product size 3-1/8" to 14"

2) Bar grade: 4145H; 4145H-MOD; P530; P550

3) Product type: smooth drill pipe, spiral drill collar, non-magnetic drill collar

4) Product length: 30 feet, 31 feet or according to customer special requirements

5) Thread type: from NC23 to 6-5/8REG; 7-5/8REG; 8-5/8REG; 8-5/8H90

6) Drill collar specifications: APISPEC7-1, APISPEC 7-2 and API RP7G



Drill Collar Number

Outside Diameter

Inside Diameter

Length

Bevel dia.

Ref.Bending strength Ratio

Df

mm

in

mm

in

mm

ft

in

NC23-31

79.4

3 1/8

31.8

1 1/4

9150

30

3

2.57:1

NC26-35(2 3/8IF)

88.9

3.5

38.1

1.5

9150

30

3 17/64

2.42 :

1

NC31-41(2 7/8IF)

104.8

4 1/8

50.8

2

9150&9450

30 or 31

3 61/64

2.43 :

1

NC35-47

120.7

4 3/4

50.8

2

9150&9450

30 or 31

4 33/64

2.58 :

1

NC38-50

127

5

57.2

2 1/4

9150&9450

30 or 31

4 49/64

2.38 :

1

NC44-60

152.4

6

57.2

2 1/4

9150&9450

30 or 31

5 11/16

2.49 :

1

NC44-60

152.4

6

71.4

2 13/16

9150&9450

30 or 31

5 11/16

2.84 :

1

NC44-62

158.8

6 1/4

57.2

2 1/4

9150&9450

30 or 31

5 7/8

2.91 :

1

NC46-62

158.8

6 1/4

71.4

2 13/16

9150&9450

30 or 31

5 29/32

3.63 :

1

NC46-65(4IF)

165.1

6.5

57.2

1 1/4

9150&9450

30 or 31

6 3/32

2.76 :

1

NC46-65(4IF)

165.1

6.5

71.4

2 13/16

9150&9450

30 or 31

6 3/32

3.05 :

1

NC-46-67(4IF)

171.4

6.75

57.2

.2 1/4

9150&9450

30 or 31

6 9/32

3.18 :

1

NC50-67

171.4

6.75

71.4

2 13/16

9150&9450

30 or 31

6 9/32

2.37 :

1

NC50-70

177.8

7

57.2

2 1/4

9150&9450

30 or 31

6 31/64

2.54 :

1

NC50-70(4 1/2 IF)

177.8

7

71.4

2 13/16

9150&9450

30 or 31

6 31/64

2.73 :

1

NC50-72

184.2

7 1/4

71.4

2 13/16

9150&9450

30 or 31

6 43/64

3.12 :

1

NC56-77

196.6

7 3/4

71.4

2 13/16

9150&9450

30 or 31

7 19/64

2.70:1

NC56-80

203.2

8

71.4

2 13/16

9150&9450

30 or 31

7 31/64

3.02 :

1

6 5/8 REG

209.6

8 1/4

71.4

2 13/16

9150&9450

30 or 31

7 45/64

2.93 :

1

NC61-90

228.6

9

71.4

2 13/16

9150&9450

30 or 31

8 3/8

3.17 :

1

7 5/8 REG

241.3

9 1/2

76.2

3

9150&9450

30 or 31

8 13/16

2.81 :

1

NC70-97

247.6

9 3/4

76.2

3

9150&9450

30 or 31

9 5/32

2.57 :

1

NC70-100

254

10

76.2

3

9150&9450

30 or 31

9 11/32

2.81 :

1

8 5/8 REG

279.4

11

76.2

3

9150&9450

30 or 31

10 1/2

2.84 :

1

Note:

1. Effective Length range:30ft or 31ft.

2. Joint tool thread cold working(C/W).

3.(SRG)stress relief groove and bore back box. Manufactured according to API 7-1 latest version.


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