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1. 发明公开

EP2932022A2 SLIDING SLEEVE HAVING CONTRACTING, DUAL SEGMENTED BALL SEAT 审中-公开
标题翻译：滑套有承包，双段式球座
公开(公告)号：EP2932022A2
公开(公告)日：2015-10-21
申请号：EP13814777.2
申请日：2013-12-13
申请人： Weatherford/Lamb, Inc.
发明人： CAST, Michael, W. , WILKIN, James, F.
IPC分类号： E21B34/14 , E21B43/26 , E21B23/04
CPC分类号： E21B34/14 , E21B43/12 , E21B43/26 , E21B2034/007 , Y10T137/0318 , Y10T137/7781
摘要： 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.
摘要翻译：一个滑动套筒打开，展开的球。套筒具有设置在壳体中的座部，并且座部具有利用C形环或其它偏置元件彼此向外偏置的部段。最初，座椅在滑动套筒中具有扩展状态，使得座椅部分向外扩展抵靠壳体的孔。当适当大小的球部署在井下时，球接合扩展的座椅。施加在落座球上的流体压力将座椅移动到内套筒的孔中。发生这种情况时，座位会收缩，从而增加座位与球的接触面积。最终，座椅到达内部套筒的肩部，使得施加在所承受的球上的压力现在使内部套筒移动到外壳中以打开滑动套筒的流动端口。

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