利用有序元素的最佳匹配法进行地层对比

本文提出的利用有序元素的最佳匹配法,目的在于改善对比效果,使利用测井数序进行的地层对比既能研究不同地层的相似程度,又能确定地层的延伸情况,特别是能解决对比井之一的地层因断层或尖灭等原因造成缺失的问题。该方法以有序元素相匹配力基础,以元素配对相似系数极小来反映元素间的相似程度、以及力避开动态规划本身的“维数障碍”而按层取特征向量值的方法进行地层对比。根据所编程序进行的试算结果表明,对比井中地层的深度差异或对比井之一的地层缺失,均能获得比较可靠的对比结果,初步证明该方法用于地层对比是可行的。

Stratigraphic Correlation by Using the Best Match Method of Sequential Elements

The stratigraphic correlation using logging data with computer is what both log analysts and geologists concern. This correlation has made a big progress in recent years. In the above, a best match method using sequential elements is proposed aiming to improve the correlation results so that the stratigraphic correlation by using logging data sequence can resarch the likeness between different strata, determin the stratigraphic trend and, inparticullar, solve the problem of stratigraphic break due to faults or stratigraphic pinching out existing in one of wells to be correlated. By matching sequential elements, this method expresses the similar coefficient in minimum of likeness of elements and correlates strata by extracting eigenvector in stratum to avoid the "dimension limitation" of dynamic optimization. The computation shows that valid results can be obtained in the correlated wells with different depth of stratum or stratigraphic break. It is proved that this method is available for stratigraphic correlation.