API 10D Bow Spring Centralizer for Oil Casing
casing centralizer
1.roller centralizer
2.bow spring centralizer
3.rigid centralizer
4.cast aluminium centralizer
API 10D casing centralizer
Casing centralizer is a cementing tool which applied to centralize casing to improving the cementing quality. They are designed for High Restoring Force and Low Starting Force for centralizing the casing pipe in a Horizontal and Deviated well.
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.
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.
Characteristics:
A) Designed for High Restoring Force and Low Starting & Running Force
B) End collars are designed with self-locking action, which are easy to assemble.
C) Undergo special coating process to prevent from rust.
D) Can be shipped in half assembled condition for economy in shipping and storage costs.
E) Specification: 4"---20". Any special sizes or combination can available on request.
There are welded and non-welded type, double bow and single bow available for supplying.
Technical Specification and Parameters:
Non-weld casing centralizer
Model |
Hooping In-Dia. |
Hooping Thickness |
Hooping Height |
Total Length |
Max. Out-Dia. |
Spring Pieces |
|
| in |
mm |
mm |
mm |
mm |
mm |
pcs |
| 5-1/2*8-1/2 |
142-148 |
3-5 |
90-120 |
650±50 |
225±5 |
5 |
| 7*9-5/8 |
181-186 |
3-5 |
90-120 |
650±50 |
255±5 |
6 |
| 7*8-1/2 |
181-186 |
3-5 |
90-120 |
650±50 |
235±5 |
6 |
| 8-5/8*12-1/4 |
223-228 |
3-5 |
90-120 |
650±50 |
330±5 |
8 |
| 9-5/8*12-1/4 |
250-255 |
3-5 |
90-120 |
650±50 |
330±5 |
8 |
| 10-3/4*12-1/4 |
274-276 |
3-5 |
90-120 |
650±50 |
330±5 |
9 |
| 13-3/8*17-1/2 |
342-347 |
3-5 |
90-120 |
650±50 |
450±5 |
11 |
| 18-5/8*24 |
476±1 |
3-5 |
90-120 |
600±50 |
610±5 |
12 |
| 20*26 |
510±1 |
3-5 |
90-120 |
600±50 |
660±5 |
12 |
Our non-welded bow spring casing centralizer is made of spring steel which
has been heat teated and hardened tempered to ensure proper and consistent
spring characteristics.
2) End collar hinges are folded toward inside. This way will minimize the collar
stretch taht tends to occur when centralizers encounter tapers, commonly found
in certain type of pipe connections.
3)A reinforcing rib stamped into the end collar. This way will strengthen and
preserve it's round configuration during transport.
4)Several different spring bow heights that are available to accommodate most
of casing-to-hole configuration.
5)Centralizers with built-in stop devices as well as those of uncommon sizes are
available based on request.
Weld casing centralizer
Model |
Hooping In-Dia. |
Hooping Thickness |
Hooping Height |
Total Length |
Max. Out-Dia. |
Spring Pieces |
|
| in |
mm |
mm |
mm |
mm |
mm |
pcs |
| 5-1/2*8-1/2 |
142-148 |
5-7 |
50-60 |
650±50 |
225±5 |
5 |
| 6*8-1/2 |
154-158 |
5-7 |
50-60 |
650±50 |
255±5 |
5 |
| 13-3/8*17-1/2 |
342-349 |
8 |
50-60 |
580 |
450±5 |
6 |
| 20*26 |
510-518 |
8 |
50-60 |
650±50 |
670±5 |
10 |
Audited Supplier 
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