发明名称 ANNULAR PRESSURE RELEASE SUB
摘要 A method and apparatus for a pressure relief valve assembly. The valve assembly may be coupled to one or more casings and/or tubular members to control fluid communication therebetween. The valve assembly is a one-way valve assembly that relieves pressure within an annulus formed between adjacent casings and/or tubular members to prevent burst or collapse of the casings and/or tubular members. The valve assembly is resettable downhole.
申请公布号 EP2702234(B1) 申请公布日期 2016.03.09
申请号 EP20120720346 申请日期 2012.04.27
申请人 WEATHERFORD TECHNOLOGY HOLDINGS, LLC 发明人 HEBERT, JOHN EMILE;BOURG, BRANDON LEE;ARBONEAU, EMMET, J., III;SMITH, JOSHUA T.
分类号 E21B34/06 主分类号 E21B34/06
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