发明名称 |
OPTIMAL TRAJECTORY CONTROL FOR DIRECTIONAL DRILLING |
摘要 |
A feedback control system for steering a tool along a well-plan. Optimum steering instructions may be generated by a recursive optimization of multiple objectives. These objectives can include accuracy and quality. The quality objective can include the objective of drilling a smooth borehole by minimizing strain energy and torsion. The accuracy objective can include the objective of minimizing the deviation of the borehole trajectory during the real-time drilling process from a predefined well-plan. The trajectory control problem, therefore, can be a multi-objective problem where, in some embodiments, the weightings of the individual objectives can be adjusted along the process. |
申请公布号 |
EP2932033(A4) |
申请公布日期 |
2016.09.28 |
申请号 |
EP20130863170 |
申请日期 |
2013.12.13 |
申请人 |
SCHLUMBERGER TECHNOLOGY B.V.;SCHLUMBERGER HOLDINGS LIMITED;SERVICES PÉTROLIERS SCHLUMBERGER;PRAD RESEARCH AND DEVELOPMENT LIMITED |
发明人 |
PANCHAL, NEILKUNAL;WHIDBORNE, JAMES FERRIS;BAYLISS, MARTIN THOMAS;RINGER, MAURICE |
分类号 |
E21B47/0224;E21B7/08 |
主分类号 |
E21B47/0224 |
代理机构 |
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代理人 |
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