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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两个阶段，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 between seepage field and stress field prominently appears as the effect of stress field on the seepage field during the secondary migration of oil and gas. In-situ stress is the main factor affecting the head of reservoir sedimentary water, and the geostress gradient is the main driving force of hydrocarbon migration. The secondary migration of oil and gas can be divided into two stages, namely, the gravity stress gradient driving stage of sediments and the superimposed stress gradient driving stage of tectonic stress and self-contained stress. The inversion of the magnitude of paleo-stress fields in two stages is a new way of hydrocarbon prediction.