基于振动监测的浅层钻头位置预测模型

发布时间：2019-06-22 12:02

【摘要】：为加强丛式井井眼轨迹的控制与监测,基于钻头破碎岩石的振动信号,建立了浅层钻进时的钻头位置预测模型。通过研究钻头钻进时的振动特征和振动波在套管与地层中的传播衰减,认识到根据套管头处采集的振动信号能量来确定井筒之间的距离,进而实现钻头位置的场强定位是可行的。结合风险井的井眼轨迹测量数据和圆周测距定位算法,推导得出了钻头大地坐标的计算方法。根据渤海某平台的现场监测数据,利用所建模型计算得到了正钻井井眼的三维轨迹,将计算所得井眼轨迹与实际井眼轨迹进行对比,结果显示,该模型可以在一定条件下有效定位钻头位置,确定钻头走向,为防碰预警提供依据。
[Abstract]:In order to strengthen the control and monitoring of cluster hole trajectory, a bit position prediction model for shallow drilling is established based on the vibration signal of broken rock. By studying the vibration characteristics of bit drilling and the propagation and attenuation of vibration wave in casing and formation, it is recognized that it is feasible to determine the distance between wellbore according to the vibration signal energy collected at casing head, and then to locate the field strength of bit position. Based on the wellbore trajectory measurement data of risky wells and the circumferential ranging and positioning algorithm, the calculation method of bit geodetic coordinates is derived. According to the field monitoring data of a platform in Bohai Sea, the three-dimensional trajectory of positive drilling hole is calculated by using the established model, and the calculated wellbore trajectory is compared with the actual wellbore trajectory. The results show that the model can effectively locate the bit position and determine the bit direction under certain conditions, which provides the basis for collision prevention and early warning.
【作者单位】：中国石油大学(华东)石油工程学院;中石化胜利钻井工程技术公司定向井公司;中国电波传播研究所;
【基金】：国家“973”计划(2015CB251200) “十二五”国家科技重大专项(2011ZX05057-002-006,2011ZX05024-002-010)资助
【分类号】：TE24

【相似文献】