发明名称 TOOLS AND METHODS USEFUL WITH WELLBORE REVERSE CIRCULATION
摘要 A method for reverse circulating a tool upwardly through a wellbore, the method including: providing a manipulator tool including an upper end and a lower end, conveying the manipulator tool down hole to a position adjacent a downhole tool, using the manipulator tool to manipulate the downhole tool, and reversing fluid flow through the well to create a pressure differential about at least one of the manipulator tool and the downhole tool such that the at least one of the manipulator tool and the downhole tool is lifted upwardly through the wellbore. A manipulator tool for use in a reverse circulating method is also described as are a tool catcher, a tool catching assembly and a tool catching method.
申请公布号 GB2453281(A) 申请公布日期 2009.04.01
申请号 GB20080022502 申请日期 2007.06.06
申请人 TESCO CORPORATION 发明人 ROBERT M TESSARI;BARRY J TATE;TOMMY M WARREN
分类号 E21B23/00;E21B10/64;E21B23/08;E21B23/10;E21B31/00 主分类号 E21B23/00
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