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Drill Collar
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Products description:


Product Name: API Non Magnetic Drill Collar

General Description: The Petroleum drilling tools of us mainly include Drill collars, Spiral drill collars, Non magnetic drill collars, Short drill collars, Drill tool stabilizers, Non magnetic drill tool stabilizers, Integral heavy weight drill pipes, etc.

Material: Non magnetic steel

Shape: It is the round pipe with smooth surface and thick wall, and the both ends are machined screw thread for connection.

Use: It is mainly used for the inspection in the process of petroleum drilling.

Standard: API Spec 7-1 or SY/T5144 Standard.

Inspection&Test: When producing, traceability are maintained from the receipt of raw material to completion of final products, and serial numbers are die-stamped on each workpiece body. During each manufacturing process, inspection and test are performed.

Magnetic permeability: (MPS=1×105/4∏A/m),average: Ur<1.010.magnetic field gradient: ΔB≤0.05μT,carbon steel ,high quality API Drill Collar 31/8"-11" .


Connections

ODmm

IDmm

Lengthmm

NC23-31

79.4

31.8

9150

NC26-35

88.9

38.1

9150

NC31-41

104.8

50.8

9150 or 9450

NC35-47

120.7

50.8

915 or 9450

NC38-50

127

57.2

9150 or 9450

NC44-60

152.4

57.2

9150 or 9450

NC44-60

152.4

71.4

9150 or 9450

NC44-62

158.8

57.2

9150 or 9450

NC46-62

158.8

71.4

9150 or 9450

NC46-65

165.1

57.2

9150 or 9450

NC46-65

165.1

71.4

9150 or 9450

NC46-67

171.4

57.2

9150 or 9450

NC50-67

171.4

71.4

9150 or 9450

NC50-70

177.8

57.2

9150 or 9450

NC50-70

177.8

71.4

9150 or 9450

NC50-72

184.2

71.4

9150 or 9450

NC56-77

196.8

71.4

9150 or 9450

NC56-80

203.2

71.4

9150 or 9450

6 5/8REG

209.6

71.4

9150 or 9450

NC61-90

228.6

71.4

9150 or 9450

7 5/8REG

241.3

76.2

9150 or 9450

NC70-97

247.6

76.2

9150 or 9450

NC70-100

254

76.2

9150 or 9450

8 5/8REG

279.4

76.2

9150 or 9450





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