胜利油区稠油油藏注蒸汽热采后储层物性变化特征

将胜利油区稠油油藏在不同开发方式、不同开发阶段完钻的热采密闭取心井岩心分析资料,与邻近或相同沉积条件下的老取心井的岩心分析资料进行对比,探讨了碎屑岩稠油油藏储层参数经过注蒸汽热采后的变化特点、变化机理及其对开发效果的影响;总结了稠油注蒸汽热采与常规注水开采后的储层特性变化异同点,为稠油热采过程中制定改善储层渗流条件、提高油藏采收率的对策或措施提供了依据。

Reservoir physical property variation features after steam injection for thermal recovery of the heavy oil reservoir at Shengli petroliferous province

In Shengli petroliferous province, there are thermal recovery wells of the heavy oil reservoirs drilled in various development schemes and stages, the sealing core data of the wells compared with relevant core data of the adjacent old wells or the old wells in the same sedimentary condition. Reservoir parameter variation features, mechani (?) and its influence on development effect after thermal recovery by steam injection for the clastic heavy oil reservoir were studied. The same and the different aspects of these reservoir property variations after the thermal recovery by steam injection in the heavy oil reservoirs and common water flooding are summed up. It provides foundations for making policy and measures of improving the reservoir percolation conditions and the oil recovery efficiency during the thermal recovery of the heavy oil reservoir.