临盘油田盘二块稠油油藏水驱油规律试验研究

Rules of Waterflooding in Heavy Oil Reservoir of Block Pan 2 in Linpan Oilfield

通过室内水驱油模拟试验，分别研究了盘二块稠油油藏注水过程中注水强度、注水方式对中、高渗储层水驱油效率的影响以及水驱油对储层物性的影响。结果表明：①常规稠油油藏注水开发高含水期可采出总可采储量的70％～75％以上；②提高注水强度、注水压力可有效地提高水驱油效率，且对中低渗稠油油藏更敏感；③水驱油可在一定程度上改变储层物性特征。

A waterflooding simulation experiment is conducted in the laboratory to respectively study the effects of water injection intensity,injection mode on oil displacement efficiency and on the reservoir physical properties of middle and high permeability reservoirs during the water injection process of heavy oil reservoirs in Block Pan 2.The result shows that:①at the high water-cut stage of conventional heavy oil reservoir waterflooding,more than 70% to 75% of total recoverable reserves can be produced;②waterflooding efficiency can be effectively improved by raising water injection intensity and injection pressure and it is more sensitive to mid-low permeability heavy oil reservoirs;③the reservoir physical properties can be changed to certain extent with waterflooding.