发明名称 MODULAR WELL SERVICING UNIT
摘要 A method of modifying a modular well servicing combination unit comprising the steps of keeping a well servicing module in inventory and removably mounting said well servicing module onto said modular well servicing combination unit.
申请公布号 US2010089589(A1) 申请公布日期 2010.04.15
申请号 US20090451161 申请日期 2009.10.28
申请人 CRAWFORD JAMES B;CRAWFORD PHILLIP;ANDERSON LILA R 发明人 CRAWFORD JAMES B.;CRAWFORD PHILLIP;ANDERSON LILA R.
分类号 E21B19/00;E21B23/00 主分类号 E21B19/00
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