[12] Patent
[11] Patent No.:GC0010782  
[45] Date of Publishing the Grant of the Patent: //                0/  
Number of the Decision to Grant the Patent:2020/162086
Date of the Decision to Grant the Patent:21/Jan/2020

[21] Application No.:GC 2013-26003

[22] Filing Date:12/12/2013

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
13/12/2012
61/736.993

[72] Inventor: Cesar G. Garcia

[73] Owner: WEATHERFORD TECHNOLOGY HOLDINGS, LLc, 2000 St. James Place, Houston, 77056, Texas, USA

[74] Agent: Saud M. A. Shawwaf Law Office

  

 

  

[51]IPC:
Int. Cl.: E21B 23/04, 34/14, 43/26 (2006.01)

[56] Cited Documents:

- FracPoint EX-C Frac sleeve system ,
4 October 2011
-US 2009/044948 Al (AVANT MARCUS A [US] ETAL) 19 February 2009
-US 2012/261115 Al (XU YING QING [US] )18 October 2012
 
Examiner: Eng. Fahad M. AlBaker

[54] SLIDING SLEEVE HAVING CONTRACTING, RINGED BALL SEAT
[57] Abstract: A sliding sleeve opens with a deployed ball. The sleeve has a seat disposed in the housing, and the seat has segments biased outward from one another with a C-ring or other biasing element. Initially, the seat has an expanded state in the sliding sleeve so that the seats segments expand outward against the housing’s bore. When an appropriately sized ball is deployed downhole, the ball engages the expanded seat. Fluid pressure applied against the seated ball moves the seat into the inner sleeve’s bore. As this occurs, the seat contracts, which increases the engagement area of the seat with the ball. Eventually, the seat reaches the shoulder in the inner sleeve so that pressure applied against the seated ball now moves the inner sleeve in the housing to open the sliding sleeve’s flow port.
No. of claims: 17     No. of figures: 16


 

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