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2. 发明申请

WO2017209607A1 A METHOD OF AND A DEVICE FOR ESTIMATING DOWN HOLE SPEED AND DOWN HOLE TORQUE OF BOREHOLE DRILLING EQUIPMENT WHILE DRILLING, BOREHOLE EQUIPMENT AND A COMPUTER PROGRAM PRODUCT 审中-公开
标题翻译：一种钻井，钻井设备和计算机程序产品钻井设备的井下和井下转矩估算方法及装置
公开(公告)号：WO2017209607A1
公开(公告)日：2017-12-07
申请号：PCT/NL2017/050348
申请日：2017-05-30
申请人： ENGIE ELECTROPROJECT B.V.
发明人： VELTMAN, André
IPC分类号： E21B44/00
摘要： A method of and a device, borehole drilling equipment and a computer program product for estimating at least one of down hole speed and down hole torque of borehole drilling equipment while drilling a borehole in an earth formation. The borehole equipment comprising a rotational drive system, a drill string, a bottom hole assembly comprising a drill bit, a top end coupled to the rotational drive system, and a speed controller arranged for controlling rotational top end drive speed by commanding a top end drive torque. The method being performed in a computer based on a two-port spectral domain transfer matrix computational model of the borehole drilling equipment (50). While drilling, rotational top end drive speed and top end drive torque are obtained (54) and down hole speed and down hole torque of the borehole drilling equipment are calculated (55) by reducing spectral bandwidth of and applying a time delay term to the calculations (53) enabling a causal time domain solution.
摘要翻译：钻孔设备和计算机程序产品的方法和设备，用于在钻探地层中的钻孔的同时估计钻孔设备的井下速度和井下扭矩中的至少一个。钻孔设备包括旋转驱动系统，钻柱，包括钻头的底部钻具组合，联接到旋转驱动系统的顶端以及布置成通过命令顶端驱动控制旋转顶端驱动速度的速度控制器扭矩。该方法基于钻孔设备（50）的双端口光谱域传递矩阵计算模型在计算机中执行。在钻孔时，获得旋转顶端驱动速度和顶端驱动扭矩（54），并且通过降低光谱带宽并且将时间延迟项应用于计算来计算钻孔设备的井下速度和井下扭矩（55）（55）（53）启用因果时域解决方案。

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