海上油田与陆上油田聚驱开发效果对比及影响因素研究

Study on the comparison of development effects of polymer flooding in offshore and onshore oilfield and its influencing factors

由于海上与陆上油田在储层物性及开采工艺等方面存在较大差异,对比海上与陆上注聚开发效果,总结影响海上聚驱效果发挥的最主要因素,结果表明:海上油田与陆上油田聚驱开发水平均较好;相比于陆上油田,海上油田早期注聚,更利于聚驱效果的发挥;原油黏度大、地层水矿化度高等问题制约海上聚驱开发效果,但可通过改善聚合物性能得到解决。

There are great differences in reservoir property and production technology in offshore and onshore oilfield. Therefore, the development effects of polymer flooding are contrasted and the main factors influencing the effect of polymer flooding in offshore oil are obtained. The results show that the development effect of polymer flooding in offshore oilfield is lower than that of onshore oilfield. The problems, including high viscosity of crude oil and high salinity of formation water, can be solved by improving the properties of polymer. The reservoir rhythm and the well patterns, which are not complete because of the cross distribution of water and polymer injection wells, are the main factors that influence the effect of polymer flooding in offshore oilfield.