CAJ | 학술논문

构造应力场在油气运聚成藏中具有重要的作用。明水组沉积末期是松辽盆地乾安地区高台子油层的一个主要成藏期，期间烃源岩的生、排烃高峰与大规模油气运聚和圈闭的形成在时间上具良好的匹配关系。利用ANSYS有限元模拟软件，对归字井地区明水组沉积末期构造应力场进行了初步模拟；同时利用地应力驱动油气运移理论，对运移势场进行了数值模拟。模拟结果表明，最大主应力受岩性控制明显，而最小主应力主要受埋深控制。已有的试油试气资料表明，具油气显示的井，大部分都位于地应力区和地势区。依据地应力和运移势场的分布，并结合地质构造特征，对油藏有利区进行了预测，为油田的勘探开发提供了科学依据。
구조응력장재유기운취성장중구유중요적작용。명수조침적말기시송료분지건안지구고태자유층적일개주요성장기，기간경원암적생、배경고봉여대규모유기운취화권폐적형성재시간상구량호적필배관계。이용ANSYS유한원모의연건，대귀자정지구명수조침적말기구조응력장진행료초보모의；동시이용지응력구동유기운이이론，대운이세장진행료수치모의。모의결과표명，최대주응력수암성공제명현，이최소주응력주요수매심공제。이유적시유시기자료표명，구유기현시적정，대부분도위우지응력구화지세구。의거지응력화운이세장적분포，병결합지질구조특정，대유장유리구진행료예측，위유전적감탐개발제공료과학의거。
Tectonic stress is very important for oil?gas migration and accumulation. Petroleum accumulation for Gaotaizi reservoir in Songliao Basin mainly occurred in the end of Mingshui period. During this period, the peak of hydrocarbon generation and expulsion matches well with large scale hydrocarbon migration and accumulation periods and the formation of accumulations. In this paper, ANSYS is used to primarily simulate the tectonic stress field in the end of Mingshui period in Guizijing region of Qian′an area in South Songliao Basin. According to oil and gas migration mechanics driven by the crustal stress, migration potential field is also simulated. The results show that the first maximum principal stress is mainly controlled by lithology while the minimum principal stress is buried depth. Therefore, the well testing data shows that most wells with a show of oil and gas locate in low stress zone or low potential zone. Based on the distribution of crustal stress, migration potential fields and geologic structure features, the oil?favored areas predicted in this study will provide scientific guide for oil exploration and development.