【摘要】 为了提高救援井与事故井之间的连通成功率,提出一种瞬变电磁阵列探头救援井近距离探测方法。以井下瞬变电磁探测系统的阵列信号处理为基础,结合Radon变换原理和瞬变电磁阵列探头的对称特性,对被测范围内的一段事故井套管与救援井的相对姿态进行判断。模拟试验结果表明:该方法可有效改善救援井近距离探测性能,识别事故井与救援井的相对姿态,为救援井的跟随钻井阶段提供关键信息。更多还原

【Abstract】 In order to improve the connection rate between relief well and accident well,a transient electromagnetic( TEM) array probe detecting method for relief well drilling in short distance is presented. Based on the array signal processing of the borehole TEM detecting system,combined with the symmetry of the proposed array probe Radon transform,where the relative attitudes between a relief well and a blowout well can be determined within the detection range. Simulation experiment results demonstrate the effectiveness of the proposed method for improving detection performance in short distance,identify relative attitude of accident well and relief well,offer significant information for the tracing phase of relief well.更多还原