裂缝孔隙度数值评价技术

NUMERICAL EVALUATION TECHNIQUES OF FRACTURE POROSITY

裂缝是岩石在构造力作用下发生破裂的结果 ,岩石的破坏程度在一定程度上能反映裂缝的发育程度和裂缝孔隙度的大小。据此 ,我们建立了一套以构造为基础 ,以构造地质和岩石力学理论为指导 ,以数值模拟分析技术为手段的裂缝孔隙度的数值评价技术。文章首先介绍该技术的原理和技术思路 ,然后以GSM沙一油气藏二维裂缝孔隙度数值评价为例 ,简要介绍该技术的步骤和方法 ,并展示了所作的具体结果。

Fractures are the result of the breaking of the rocks by the action of tectonic stress and the degree of the development of fractures and the magnitude of fracture porosity can be reflected to a certain extent by the grade of the breaking of rocks. For this reason, a set of numerical evaluation techniques of fracture porosity were set up by the authors. In the paper, the principle and thinking of these techniques are introduced firstly, then their operation steps and methods are simply stated and the results achieved are presented by taking the numerical evaluation of the 2-D fracture porosity of Shaximiao reservoir in GSM structure in Central Sichuan as an example.