Products
All categories
Spiral Drill Collar 螺旋钻铤
Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from differential pressure. MS brand spiral drill collars are manufactured strictly according to API Spec.7 and Standard SY5144, all mechanical properties meet with above standards.
Spiral drill collar are a kind of petroleum drilling tool series of our company. This kind of drill collar is capable of preventing differential pressure detention of tools during drilling. Spiral grooves will enable the mud to flow freely around the drill collar to use balance pressure to prevent the formation of obstruction so as to effectively prevent differential pressure jamming. The contact area against the wall of the well can be cut so as to effectively reduce the possibility of forming differential pressure obstruction.
Spiral grooves will enable the mud to flow freely around the drill collar to use balance pressure to prevent the formation of obstruction so as to effectively prevent differential pressure jamming. The contact area against the wall of the well can be cut so as to effectively reduce the possibility of forming differential pressure obstruction.
The extensive use of spiral drill collar is based on its characteristics. This special drill collar is able to reduce the contact area between the well wall and the pipe so as to avoid "rock-drilling jamming"of the drill string.
The weight of spiral drill collar is 4-6% less than that of the round drill collar.
Sizes for drill collar spiral groove
|
O.D. |
Cutting depth |
Lead±25.4 |
||
|
Mm |
in |
A(mm) |
B(mm) |
mm |
|
86 |
3 3/8 |
3.5±0.79 |
|
679 |
|
98.4 |
3 7/8 |
4.0±0.79 |
|
914 |
|
101.6～111.1 |
4～4 1/8 |
4.8±0.79 |
|
914 |
|
114.3～130.2 |
4 1/2～5 1/8 |
5.6±0.79 |
|
965 |
|
133.4～146.1 |
5 1/4～5 3/4 |
6.4±0.79 |
|
1067 |
|
149.2～161.9 |
5 7/8～6 3/8 |
7.1±1.59 |
|
1067 |
|
165.1～177.8 |
6 1/2～7 |
7.9±1.59 |
|
1168 |
|
181.0～200.0 |
7 1/8～7 7/8 |
8.7±1.59 |
5.6±0.79 |
1626 |
|
203.2～225.4 |
8～8 7/8 |
9.5±1.59 |
6.4±0.79 |
1727 |
|
228.6～250.8 |
9～9 7/8 |
10.3±2.37 |
7.1±1.59 |
1829 |
|
254.0～276.2 |
10～10 7/8 |
11.1±2.37 |
7.9±1.59 |
1930 |
|
279.4 |
11 |
11.9±2.37 |
8.7±1.59 |
2032 |
WRITE A MESSAGE TO US
Contact Us
Our mainly products: drilling rig parts, drilling equipment, solid control system, wellhead equipment, fishing tools, cementing tools.
You are welcome to consult us!
+86-513-87635480 
Emial 
Copyright © 2021 Rugao Yaou Import & Export Co. LTD. All rights reserved. 苏ICP备06033218号 by:www.300.cn
