发明名称 Geothermal wellhead repair unit
摘要 A geothermal wellhead repair unit including a mechanically set packer to isolate the wellhead for removal and repair thereof. The packer is run into the well string using a running tool. The packer is set by placing tension on the mandrel to set the packing elements and the slip assembly. Once the packer is set, the running tool can be disengaged without gear of collapsing the packer and the wellhead removed for repair or replacement. Upon replacement of the wellhead, the running tool can be used to unset and retrieve the packer.
申请公布号 US4984636(A) 申请公布日期 1991.01.15
申请号 US19890313688 申请日期 1989.02.21
申请人 DRILEX SYSTEMS, INC. 发明人 BAILEY, THOMAS F.;STRICKLAND, JAMES N.
分类号 E21B23/06;E21B33/129 主分类号 E21B23/06
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