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构造应力场的变化会对岩石力学和物理性质产生影响,进而影响岩石中油气的流动与赋存以及岩石—流体的作用过程。因此“临界转换”状态下的构造应力场对油气聚集成藏有着十分重要的影响,主要表现在:构造应力场的转换总伴随有构造运动的发生,而构造运动所产生的各种裂隙、褶皱,断层等静态的地质要素为油气运移和聚集成藏提供了通道储集空间;变化的地应力场本身还会引起流体势场变化,从而控制了油气的运移与聚集。因此,研究构造应力场及其转换对油气勘探开发具有重要的理论和实际意义。
Changes in tectonic stress field will affect the rock mechanics and physical properties, and then affect the flow and occurrence of oil and gas in the rock and the rock-fluid interaction. Therefore, the tectonic stress field under the state of “critical transition” has a very important influence on the hydrocarbon accumulation and accumulation. The changes of tectonic stress field are always accompanied by the tectonic movement, while the tectonic stress generated by the tectonic movement , Fold, fault and other static geologic elements provide channel storage space for hydrocarbon migration and accumulation. The changed geo-stress field itself also causes the change of fluid potential field and thus controls the migration and accumulation of oil and gas. Therefore, it is of great theoretical and practical significance to study the tectonic stress field and its transformation on oil and gas exploration and development.