发明名称 |
AUTOMATED CONTROL SYSTEM FOR BACK-REAMING |
摘要 |
A system that controls a back reaming operation of a drilling rig is provided that includes a hoisting system that moves a drill pipe during a back reaming operation at a hoisting speed and a hoisting torque. The hoisting system comprises at least one back reaming parameter sensor for measuring a corresponding at least one back reaming parameter. An operator control unit allows an operator to input a predetermined value of the at least one back reaming parameter therein. A back reaming parameter sensor obtains the measured value of the at least one back reaming parameter. A control system monitors the at least one back reaming parameter. A braking assembly resists the hoisting torque of the drawworks system when the measured value of the at least one back reaming parameter equals the predetermined value of the at least one back reaming parameter. |
申请公布号 |
WO2004074623(A2) |
申请公布日期 |
2004.09.02 |
申请号 |
WO2004US04751 |
申请日期 |
2004.02.17 |
申请人 |
VARCO I/P, INC.;PRIOR, BRUCE;PORCHE, MIKE |
发明人 |
PRIOR, BRUCE;PORCHE, MIKE |
分类号 |
E21B;E21B19/00;E21B19/02;E21B19/08;E21B44/00;E21B44/02;E21B44/04 |
主分类号 |
E21B |
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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