强化开采及油气重新运移聚集形成剩余油机理研究

运用流体势原理和油气运移成藏理论,研究了油田注水开发中强化开采及油气重新运移聚集形成剩余油机理和剩余油的分布规律。认为以储层非均质性和构造为主的静态因素与水动力、重力、浮力和毛细管力以及摩擦力等构成的动态因素共同控制剩余油的分布。其中水动力和浮力为油气重新运移聚集的主控因素。油藏内剩余油运移聚集遵循由高势区向低势区运聚的流体势原理。油藏内的低势闭合区是油气重新运移聚集的有利区域。研究结果表明,高含水后期剩余油分布总体上可以总结为"普遍分布、局部富集"。

Research on the Remaining Oil Formation Mechanism of Enforcenent enhance recovery & Migration and Accumulation again

Using the theory of Fluid Potential energy and petroleum migration and accumulation, the remaining oil formation mechanism of enforcenent enhance recovery & migration and Accumulation again was studied during oilfield water flooding development, and the remaining oil distribution was summarized. The research results show that the remaining oil distribution and accumulation law are controlled by the static and dynamic factors of reservoir. The main factor of migration and Accumulation again are hydrodynamics and buoyancy. The remaining oil migration and accumulation follows liquid potential energy theory, and the lower potential energy region is favorable target areas of petroleum migration and accumulation. The study results showed that accumulation as a whole, the remaining oil distribution is summarized space distribution and partial at high water cut stage late.