储层构造裂缝定量预测中地质数学模型的建立与应用研究

储层裂缝的空间分布和裂缝表征参数的定量研究是石油地质学前沿问题,人们常用三维有限元数值模拟技术进行构造裂缝的定量预测[1],确定储层裂缝的组系、方位和密度,弄清储层裂缝的三维分布。以辽河欢喜岭地区为实例进行了中生界古构造研究与恢复,反演了古区域应力场,建立了三维地质模型与相应的应力场计算模型,从构造力学和应力场的角度进行了该区中生界火山岩储层的裂缝预测。

TO ESTABLISH AND RESEARCH OF THREE-DIMENSIONAL GEOLOGICAL AND MATHEMATICAL MODEL FOR QUANTITATIVE PREDICTION OF STRUCTURAL FRACTURE

The research of fractured oil and gas reservoir prediction is in the search stage worldwide, quantitative research of spatial distribution and fracture apparent parameter of reservoir fracture is very important topic in the petroleum science. For quantitative prediction of structural fracture, that means modeling and calculating palaeo-structure stress field formed in fracture stage, usually we use three- dimensional finite element modeling technique for quantitatively predicting fracture, for confirming system, orientation, density of reservoir fracture, in order to understand three-dimensional distribution of reservoir fracture. This paper will use Huanxiling Liaohe as example to research and restore Mesozoic palaeo-structure, to inverse palaeo-regional stress field, to establish three-dimensional geological model and stress field calculation model, and finally to predict Mesozoic volcanic reservoir fracture in Huanxiling Liaohe from structure mechanics and stress field.