摘要
用斜井钻孔崩落资料求取地壳应力状态是一个非线性反演问题。而遗传算法是解反演问题的有效方法之一。本文由斜井钻孔崩落的理论模型 ,用人工数据检验了遗传算法应用于此问题的有效性。对冀中坳陷内的饶阳凹陷和深县凹陷两个地区的 6口油井的钻孔崩落数据进行了处理 ,用遗传算法反演了这两个凹陷的上地壳应力状态 ,与用非线性反演和枚举相结合的方法相比 ,大大减少了计算量 。
It is a non linear inversion to calculate crustal stress field with collapse data of inclined borehole.Genetic algorithm is one of the most effective methods to solve the inverse problem.In this paper,according to collapse model we tested the effectiveness of genetic algorithm with analog data.We processed the collapse data from 6 inclined oil wells in Raoyang sag and Shenxian sag in the middle part of Hebei province,and reversed the crustal stress state of the two sags with genetic algorithm.Compared with the join method of non linear inversion and enumeration,the amount of calculation is greatly reduced and the results are satisfactory.
出处
《华北地震科学》
2000年第1期1-8,共8页
North China Earthquake Sciences
基金
地震科学联合基金!资助项目 ( 950 0 0 2 6)
关键词
应力测量
钻孔崩落
斜井
遗传算法
地壳应力
morth China
stress measuring
collapse of borehole
inclined well
algorithm
stress state
