石油勘探与开发2011，Vol.38Issue(3)：341-344,368,5.
低含油饱和度油藏开发特征
Development characteristics of low oil saturation reservoirs
摘要
Abstract
The filtration characteristics of low oil saturation reservoirs are obviously different from that of conventional reservoirs. The development performance and the influence factors for low oil saturation reservoirs were studied using laboratory large model physical modeling and reservoir numerical simulation, to match and establish the empirical formula of water cut variation. In the numerical stimulation process, the effect of threshold pressure on filtration for low permeability reservoirs was considered, which made the results more realistic. There wasn't a period ofoil recovery without water for low oil saturation reservoirs; the water cut increased rapidly at the beginning, and dropped slightly before the period of oil production with stable water cut. The higher the initial water saturation, the shorter the production time with stable water cut. Recovery changed greatly with the injection/production pressure gradient when the injection/production pressure gradient was close to the pseudo threshold pressure gradient. Recovery changed little, even no change, with the injection/production pressure gradient when the injection/production pressure gradient was far larger than the pseudo threshold pressure gradient. There was a positive correlation between recovery degree and water injection rate when the injection/production pressure gradient was less than the pseudo threshold pressure gradient.关键词
低含油饱和度油藏/低渗透油藏/拟启动压力梯度/渗流特征Key words
low oil saturation reservoir/ low permeability reservoir/ pseudo threshold pressure gradient/ filtration分类
能源科技引用本文复制引用
刘柏林,王友启..低含油饱和度油藏开发特征[J].石油勘探与开发,2011,38(3):341-344,368,5.基金项目
国家自然科学基金项目(10802079) （10802079）
