API 7"x 8 1/2" Bow Spring Casing Centralizer
1.These Centralizers are designed for High Restoring Force and Low Starting Force for centralizing the casing pipe in a Vertical, Horizontal and Deviated well.
2.Premium quality Bows are made of special alloy steel and hot formed in totally controlled heat treatment plant to achieve the uniform hardness all over.
3.Spec and performance index of bow spring casing centralizer meet API Spec 10D. The woven centralizer is connected by pin when in use, the unfolded centralizer can be stacked flatly for convenient storage and transportation.
Rigid roller centralizer
Rigid casing centralizer is used in deviated wells and horizontal wells. There are several blades on the rigid roller centralizerthat can keep casing from contacting the wellbore wall.
What is the advantages
1) Designed for high restoring force and low running force.
2) End collars are designed with self-locking action, which are easy to assemble.
3) Undergo special coating process to prevent from rust.
4) Can be shipped in half assembled condition for economy in shipping and storage costs.
Featrues:
1,Our newest design has features making them ideal for both tubing and casing applications:
2,The non-weld design eliminates any weak spots.
3,Tapered pin hold the bows and hinges in the collars
4,High-quality, super-strengthen spring-steel bows and especialy designed collar hinges provide reliable downhole performance.
5,The whole casing centralizer is made without any rivet and no welding.
6,The whole casing centralizer is composed of 3 parts, the spring, the hinges and tapered pin.
7,Easy for installation and transport
8,Conform to API 10D standard
Specifications
| Casing Size |
Hole Size |
Max O.D. |
| in. |
in. |
mm |
in. |
| 20 |
24/26 |
650/714 |
25.591/28.110 |
| 18-5/8 |
22/24 |
590/680 |
23.228/26.772 |
| 16 |
20/22 |
550/613 |
21.654/24.132 |
| 14 |
18 |
484 |
19.055 |
| 13-3/8 |
17-1/2 |
470 |
18.504 |
| 12-3/4 |
17- 1/2 |
466 |
18.346 |
| 10-3/4 |
12-1/4 |
370 |
14.567 |
| 9-5/8 |
12-1/4 |
375 |
14.764 |
| 7-5/8 |
9-7/8 |
273 |
10.748 |
| 7 |
8- 1/2 |
252 |
9.921 |
| 6-5/8 |
8- 1/2 |
245 |
9.646 |
| 5- 1/2 |
8- 1/2 |
256 |
10,079 |
| 5 |
6- 1/2 |
190 |
7.480 |
| 4-1/2 |
6 |
181 |
7.126
|
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