Super-strengthen spring steel is applied to centralize casing in wellbore, and improves cementing quality.
Features:
1. Every attachment is pressed into shape by moulding instead of welding and rivet.
2. 3-Section structure for easy transport.
3. Starting force and restoring force conform to API standards.
4. Easy-and-convenient to use.
5.Alternative turbulence plates can effectually improve displacement efficiency.
Specifications:
|
Specifications |
20" |
18⅝" |
16" |
14" |
13⅜" |
12¾" |
10¾" |
9⅝" |
7⅝" |
7" |
6⅝" |
5½" |
5" |
4½" |
|
Casing Size |
20" |
18⅝" |
16" |
14" |
13⅜" |
12¾" |
10¾" |
9⅝" |
7⅝" |
7" |
6⅝" |
5½" |
5" |
4½" |
|
Open Hole Size |
24" |
22" |
20" |
18" |
17½" |
17½" |
12¼" |
12¼" |
9⅞" |
8½" |
8½" |
8 ½" |
6 1/2" |
6" |
|
Max O.D. ,mm |
650 |
590 |
550 |
484 |
470 |
466 |
370 |
375 |
273 |
252 |
245 |
256 |
190 |
181 |
The RCR Centralizer consists of a rigid body, on which machined five spiral blades and streamlined diversion trenches between blades. On every spiral blade, there are three or four rollers made from modified alloy steel fully heat treated. The assembly is shown as following fig. Because of the rigid body and rolling friction between the rollers and inside wall of well or casing, the capability of the RCR Centralizer is better than others of all. Recommend to use the tool in cementation of deviated holes and horizontal holes.
Advantages:
1.Reducing friction resistance obviously.
2.Increasing casing to depth prognosis.
3.Ensuring all casings are centralized.
4.Improving flow characteristics around centralizer.
5.Bettering conditions of cement injection.
Installation:
RCR can be installed in any of following three ways:
1.Below a coupling with one stop ring.
2.Anywhere on a joint between two stop rings.
3.Free floating between couplings.
Specifications: (in)mm
|
Mark |
RCR5 |
RCR7 |
RCR9 |
RCR13A |
RCR13B |
|
Casing |
(5-1/2〞) |
(7〞) |
(9-5/8〞) |
(13-3/8〞) |
(13-3/8〞) |
|
Minimum |
(8-1/2〞) |
(8-1/2〞) |
(12-1/4〞) |
(16〞) |
(17-1/2〞) |
|
I．D． OF |
143±0.2 |
181±0.3 |
247.5±0.3 |
344±0.3 |
344±0.3 |
|
O．D． of |
211 |
213.9 |
305.4 |
402 |
438 |
|
Length of |
260 |
260 |
260 |
260 |
360 |