发明名称 GAS LIFT MANDREL
摘要 <p>A side-pocket gas lift mandrel having tapered end caps threaded onto the end s of the mandrel with metal-to-metal sealing threads. The thickness of each ma de up thread set is the same as the thickness of the small end of each end cap, resulting in a mandrel having the same outside diameter as if the end caps were welded on, without sacrificing any inside diameter in the small ends of the end caps, compared to a welded mandrel.</p>
申请公布号 CA2496737(A1) 申请公布日期 2004.03.04
申请号 CA20032496737 申请日期 2003.07.31
申请人 BAKER HUGHES INCORPORATED 发明人 ROTH, BRIAN A.;KRITZLER, JAMES H.;HEGDAHL, ROGER D.
分类号 E21B23/03;E21B43/12;(IPC1-7):E21B43/12 主分类号 E21B23/03
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