关键词: 致密砂岩油藏, 中等偏强水敏, 注水开发, 储层保护, 低渗透

Abstract: The reservoir in Shuangtaizi area in the western depression of Liaohe Oilfield belongs to low to ultra low porosity, low permeability and extra low permeability reservoir and high content of clay mineral, when waterflood development was applied to the extra low permeability reservoirs, reservoir protection measures were crucial. But the traditional test method of sensitivity flow was not the appropriate evaluation method to the tight sandstone oil and gas reservoirs, thus the surface area method and the positive inflation method were applied to evaluate the water sensitive of reservoir. And on the basis of the new method to determine the water sensitivity the reservoir of the area in Shuangtaizi was medium to strong, therefore site development needed to take antiinflation measures.

Key words: Tight sandstone reservoir, Medium to strong water sensitivity, Waterflooding, Reservoir protection technology, Low permeability