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法面距离计算是邻井防碰分析、实钻井眼轨迹监控的重要内容,由于井眼轨迹在数学上是三维连续光滑曲线,但是计算机只能处理离散数据,所以在计算两口井之间的法面距离时,一般使用法面距离扫描法。法面距离扫描的当前算法存在一个漏洞,当相邻的两个基准点的法面与比较井井眼轨迹一个存在交点、另一个不存在交点时,基准井井眼轨迹上在这两个基准点之间必定存在一个井身点,使得该点成为有/无交点的分界点,而当前扫描算法不能求出这样的分界点。对法面距离扫描的当前算法进行完善,增加了一段使用二分法计算分界点的程序处理单元,使得扫描算法能够快速、准确地求出分界点。使用完善后算法的计算结果数据所绘制的法面距离扫描图中的法面距离曲线准确反映了法面距离的变化,不再有信息丢失的缺陷。
The calculation of the legal plane distance is an important part of the anti-collision analysis of the adjacent well and the real-time monitoring of the borehole trajectory. Because the well trajectory is a mathematically three-dimensional continuous smooth curve, the computer can only process the discrete data. Therefore, Surface distance, the general use of the law surface distance scanning method. There is a loophole in the current algorithm of plane-distance scanning. When there is an intersection between the plane of the two adjacent reference points and the trajectory of the comparative well, and the other does not have an intersection point, There must be a well-body point between points so that this point becomes the point of delineation with / without a point-of-intersection, and the current scan algorithm can not find such a demarcation point. The current algorithm of scanning the normal distance is improved, and a program processing unit that uses the dichotomy to calculate the cutoff point is added, so that the scanning algorithm can quickly and accurately calculate the cutoff point. The curve of the distance from the surface of the plane drawn by the calculation result data of the improved algorithm accurately reflects the change of the distance of the plane of reference and no longer has the defect of information loss.