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AUTOMATED DRILLING METHODS AND SYSTEMS USING REAL-TIME ANALYSIS OF DRILL STRING DYNAMICS
AUTOMATED DRILLING METHODS AND SYSTEMS USING REAL-TIME ANALYSIS OF DRILL STRING DYNAMICS
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机译:自动钻探方法和系统使用钻串动态的实时分析
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摘要
Methods and apparatus for identifying downhole dynamics in a drilling system are provided. Acceleration-detecting sensors are mounted at multiple locations near to a drill bit, such as at a drill collar. The sensors may be spaced 90° apart along a circumference of the drill collar. The sensors detect acceleration measurements in a plane orthogonal to the drill string's axis of rotation, with respect to a first reference frame that moves with the drill string. The acceleration measurements are received by a processor and processed to determine rotational and revolution positions of the drill string within the wellbore with respect to a static reference frame. Whirl dynamics may, in particular, be determined based on the results in real time.
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