The hydrocarbon source rocks is coal-bearing strata in the tidal flat facies.The caprock is related to shaly rocks in the flood plain.

• 控制生成了三角洲相分流河道砂砾岩、水下分流河道砂砾岩以及潮坪相砂坝等有利储集岩带，潮坪相发育的煤系地层为烃源岩，上石盒子组洪泛平原形成泥质岩盖层。