<p>A side-pocket gas lift mandrel having tapered end caps threaded onto the ends of the mandrel with metal-to-metal sealing threads. The thickness of each made 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
WO2004018838(A1)
申请公布日期
2004.03.04
申请号
WO2003US23910
申请日期
2003.07.31
申请人
BAKER HUGHES INCORPORATED
发明人
ROTH, BRIAN, A.;HEGDAHL, ROGER, D.;KRITZLER, JAMES, H.