发明名称 Energizing ring divot back-out lock
摘要 An energizing ring can be used to energize a seal. In embodiments, the energizing ring has a recess, or divot, adjacent to a portion of the seal so that if the seal is deformed during a balloon-type failure, a portion of the deformed seal can occupy the recess. The seal, thus, engages surfaces of the recess to prevent axial movement of the energizing ring relative to the seal.
申请公布号 GB2521955(B) 申请公布日期 2016.02.24
申请号 GB20150005625 申请日期 2013.09.10
申请人 VETCO GRAY INC. 发明人 DANIEL R. BARNHART;NICHOLAS P. GETTE;BAOZHI ZHU;JEFFREY A. RAYNAL
分类号 E21B23/00;E21B33/04;E21B33/12 主分类号 E21B23/00
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