发明名称 ANNULAR PRESSURE RELEASE SUB
摘要 <p>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.</p>
申请公布号 WO2012149426(A2) 申请公布日期 2012.11.01
申请号 WO2012US35598 申请日期 2012.04.27
申请人 WEATHERFORD/LAMB, INC.;HEBERT, JOHN EMILE;BOURG, BRANDON LEE;ARBONEAU, EMMET, J., III;SMITH, JOSHUA T. 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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