Copyright © 2018 Shandong Mingzhu Petroleum Equipment Co., Ltd.
Heavy Weight Drill Pipe
As the transition drill string section between the ordinary drill rode and drill collar, it can effectively alleviate the transition stress concentration in their combination, provide drilling pressure, and effectively reduce the connection area of drill string and well wall and the wear rate of outside diameter.
(Specifications, Pipe Body, Outside Diameter, Inside Diameter, Upset Size, Middle Part, End, Joint, Screw Type, Chamfer Diameter, Single Weight)
Specification (in) |
Tube |
Connector |
Single weight |
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Outside diameter D |
Inner diameter d |
Thicker size |
Thread Type |
Outside diameter |
Inner diameter |
Chamfer diameter DF |
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Central |
Ends |
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3-1/2 |
88.9 |
54.2 |
116.3 |
98.4 |
NC38 |
127 |
55.6 |
116.3 |
312 |
4 |
101.6 |
65.1 |
114.3 |
106.4 |
NC40 |
133.4 |
68.3 |
|
|
4-1/2 |
114.3 |
69.9 |
127 |
119.1 |
NC46 |
158.8 |
73 |
|
|
5 |
127 |
76.2 |
139.7 |
130.2 |
NC50 |
168.3 |
77.8 |
|
|
5-1/2 |
139.7 |
92.1 |
152.4 |
144.5 |
5-1/2FH |
184.2 |
88.9 |
|
|