发明名称 DOWNHOLE TOOL STOP DEVICE AND METHOD FOR USE OF SAME
摘要 The present invention relates to a downhole-tool stop device (1) and a method of using the same, the stop device (1) comprising a first collar (4) attached to an elongated body (9), characterized by the stop device (1) including a second collar (6) attached to the elongated body (9), and the second collar (6) being displaceably attached to the elongated body (9), and the first collar (4) and the second collar (6) being placed a distance (A1) apart.
申请公布号 WO2015050458(A8) 申请公布日期 2015.05.14
申请号 WO2014NO50180 申请日期 2014.09.30
申请人 WELLBORE AS 发明人 EVERTSEN, STEFFEN
分类号 E21B23/01;E21B23/00 主分类号 E21B23/01
代理机构 代理人
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