摘要
渗流场与应力场的耦合作用在油气二次运移过程中突出地表现为应力场影响渗流场。地应力是影响储层沉积水水头的主要因素,地应力梯度是油气水运移的主要驱动力。油气二次运移可分为二个阶段,即沉积物的自重应力梯度驱动阶段和构造应力与自重应力的叠加应力梯度驱动阶段。对两个阶段的古应力场进行量级反演是油气预测的一种新途径。
The coupling action between stress field and seepage field apparently features stress field's affecting seepage field in the process of oil and gas secondary movement.The process may be divided into two stages:self-weight stress gradient drive stage and accumulated stress gradient drive stage.The amount level anti-deduction of the paleostress field of the two stages is a new way to forecast oil and gas.
关键词
油气预测
油气运移
油气藏渗流力学
Stress Field
Seepage Field
Coupling Analysis
Oil and Gas Secondary Movement
oil and Gas Forecast
