含油气盆地三维构造应力场数值模拟方法

AN APPROACH TO NUMERICAL SIMULATION OF 3 D TECTONIC STRESS FIELD OF THE OIL GAS BEARING BASIN

含油气盆地数值模拟系统是近１０年发展起来的新技术，也是实现石油地质研究定量化的途径之一。该系统包括盆地地史、热史、生烃史、排烃史和油气运移聚集史数值模拟，而含油气盆地三维构造应力场数值模拟是排烃史和油气运移聚集史研究中的一部分重要内容，并且刚刚起步。本文运用ＳｕｐｅｒＳＡＰ有限元程序，通过辽河油田张强凹陷现今三维构造应力场数值模拟，对含油气盆地三维构造应力场数值模拟方法进行了探索。该项研究对排烃史和油气运移聚集史定量化研究，油田合理注采开发，避免或解决油井套损。

In this paper,a numerical simulation of the present 3 D tectonic stress field of the Zhangqiang Depression is made using Super\ SAP finite element program,the technology and methodology here developed can be applied to other petroliferous basins.A knowledge of the existing stress state of an oil basin may prove useful to a quantitative study of the history of the expulsion and accumulation of hydrocarbons,avoidance of damage to wellcasings,and to reasonable recovering of oil as well.