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公开(公告)号:US4364432A
公开(公告)日:1982-12-21
申请号:US187383
申请日:1980-09-15
申请人: C. Joe Bass , Elmer R. Peterson
发明人: C. Joe Bass , Elmer R. Peterson
IPC分类号: E21B33/12 , E21B33/16 , E21B34/06 , E21B34/12 , E21B34/14 , E21B41/00 , E21B43/10 , E21B23/04 , E21B33/14
CPC分类号: E21B43/10 , E21B33/12 , E21B33/16 , E21B34/06 , E21B34/063 , E21B34/12 , E21B34/14 , E21B41/00
摘要: Disclosed is apparatus for sealing between two concentric annular surfaces whereby the sealing engagement may be disrupted in response to an excess pressure differential acting on the sealing apparatus in one axial direction sense. Elastic means restore the apparatus to its sealing configuration upon reduction of the pressure differential. Apparatus and method disclosed are particularly applicable to cementing liners in wells.
摘要翻译: 公开了用于在两个同心的环形表面之间进行密封的设备,由此密封接合可以响应于在一个轴向方向上作用在密封装置上的过大的压力差而被破坏。 弹性装置在降低压力差时将装置恢复到其密封结构。 所公开的装置和方法特别适用于井中的固井衬里。