利用地应力地理信息系统判定构造圈闭

本文提出了利用地理信息系统和应力场判据确定构造圈闭的五种方法,即:构造高、流体势、裂缝密度、平均应力分布及应力场综合构造圈闭判定。上述方法判定的构造圈闭与实际钻井情况基本吻合,采油效果较好的井均落在利用地应力进行构造圈闭判定的区域。地理信息系统用于油气勘探的各种分析、处理和对构造圈闭的判定是有效的,不仅为油田各种信息的科学化管理提供了有效的管理工具,也对局部区块构造圈闭的判定提供了分析和处理手段。

DISCRIMINATION OF STRUCTURAL TRAPS BY GIS TECTONIC STRESS SYSTEM AND RELATED ANALYSIS MODELS

This article introduces five kinds of methods to determine the structure traps by GIS system and criterion of tectonic stress fields, i.e., discrimination of structural traps by structural high, fluid power, density of fractures, average stress distribution and synthetic analysis of tectonic stress fields. The structural traps determined by the methods mentioned above and the results of actual drilling in exploration area are basically identical. The wells having a high production are basically located in the area where the structural traps were determined by tectonic stress field. The GIS system can be effectively used to make various analysis and process of different problems in petroleum exploration, as well as to discriminate structural traps. This system is proved to be not only an useful tool for scientific management of various relative information in oil and gas field, but also an effective tool for determining structural traps in local block through analyzing and processing various information.