DIRECTIONAL TENDENCY PREDICTORS FOR ROTARY STEERABLE SYSTEMS |
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| 申请号 | EP14899834 | 申请日 | 2014-08-11 | 公开(公告)号 | EP3132117A4 | 公开(公告)日 | 2017-11-01 |
| 申请人 | LANDMARK GRAPHICS CORP; | 发明人 | SAMUEL ROBELLO; ZHANG YUAN; | ||||
| 摘要 | A directional tendency prediction system or method that provides: determining geometric parameters of a bottomhole assembly having at least a stabilizer, a bit, and an eccentering mechanism that provides a range of eccentricity settings; deriving a side force on the bit across the range of eccentricity settings; and based at least in part on the side force on the bit, determining a walk angle or dogleg severity (DLS) across the range of eccentricity settings. The resulting DLS range may be compared with requirements for a desired borehole trajectory and if suitable, the parameters may be used to configure the bottomhole assembly, and the DLS dependence may be expressed in a tabular or functional form to control steering. | ||||||
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