发明名称 |
SYSTEM AND METHOD FOR DRILL PIPE TALLYING |
摘要 |
A method for drill pipe tallying includes detecting that a drill bit (14) has tripped in through a rig floor and monitoring movement of a drawworks (6) that supports the drill bit and a length of drill pipe. If a tag interrogating device does not detect a wireless tag (26) associated with a set of slips, the method includes counting the movement of the drawworks toward a drill pipe tally. If a tag interrogating device detects a wireless tag associated with a set of slips, the method includes not counting the movement of the drawworks toward the drill pipe tally. The tag interrogating device is positioned at a fixed location relative to the rig floor. |
申请公布号 |
WO2013165943(A3) |
申请公布日期 |
2014.08.21 |
申请号 |
WO2013US38749 |
申请日期 |
2013.04.30 |
申请人 |
NATIONAL OILWELL VARCO, L.P.;LIMBACHER, CHRISTOPHER LEE |
发明人 |
LIMBACHER, CHRISTOPHER LEE |
分类号 |
E21B47/04;E21B17/00;E21B44/00 |
主分类号 |
E21B47/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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