API casing thermoplasic centralizer
Rigid casing centralizer is used in deviated wells and horizontal wells. There are several blades on the rigid centralizer that can keep casing from contacting the wellbore wall
Roller rigid centralizer which is most suitable for highly deviated wells and horizontal wells has two or three rollers in each blade. It can change slipping friction to rolling friction, so it greatly reduces the friction between casing and wellbore wall and let casing go to desired position smoothly.
Applications:
Horizontal wells
Deviated wells
Features:
Available with straight blade centralizer and spiral blade centralizer
Cast steel, cast aluminum and light weight casing rigid centralizer are available
Easy to install
Can move on casing freely, also can be fixed on casing by tighten screws.
Available Size:
4-1/2″ to 20″
Any special sizes or combination can available on request
These are generally shipped in half assembled condition for economy in shipping and storage costs.
| Specifications |
In-Dia(mm) |
Wall
Thickness
(mm) |
Height(mm) |
Total height(mm) |
Largest Dia(mm) |
Spring Number |
| 5-1/2"*8-1/2" |
142-148 |
3-5 |
55 |
650 |
225 |
5 |
| 7"*9-5/8" |
181-186 |
3-5 |
55 |
650 |
255 |
6 |
| 7"*8-1/2" |
181-186 |
3-5 |
55 |
650 |
235 |
6 |
| 8-5/8"*12-1/4" |
223-228 |
3-5 |
55 |
650 |
330 |
8 |
| 9-5/8"*12-1/4" |
250-255 |
3-5 |
55 |
650 |
330 |
8 |
| 10-3/4"*12-1/4" |
274-276 |
3-5 |
55 |
650 |
330 |
9 |
| 13-3/8"*17-1/2" |
342-347 |
3-5 |
55 |
650 |
450 |
11 |
| 18-5/8"*24 |
476 |
3-5 |
55 |
600 |
610 |
12 |
| 20"*26 |
510 |
3-5 |
55 |
600 |
660 |
12 |
Centralizers are an integral part of the cementing process. They provide the mechanism that centers the casing in the hole and allows uniform cement flow around the casing to help protect it at all points. Several styles of centralizers are available for matching different well specifications and hole sizes, including turbulence generating designs that help clean the annulus and distribute the cement more evenly and uniformly. All models offer ample clearance for fluid passage and are extra effective in centering the casing, even in highly deviated holes and improve cement flow by reducing the effects of channeling.
2. Features
1. Spiral blades increase annular turbulence.
2. With the shape of stream-lined, it enables casing run easily in wellbore.
3. Both straight blade and spiral blade are available.
4. The material can be cast steel or cast aluminum.
The composite centralizer features a low coefficient of friction, designed with one-piece composite construction. The rugged is designed for horizontal application and maintains integrity in extreme temperatures and is resistant to high impact and wear. Even with its smooth, lightweight construction, which contains no vulnerable weak points.
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