摘要
为了给砂岩非均质油藏进一步开展周期注水矿场试验或工业性开采提供依据，利用三维三相黑油模拟器和准两层地质模型进行了垂向非均质砂岩油藏周期注水开采数值模拟研究。通过研究各种地质、开发因素对周期注水效果的影响程度，得出砂岩非均质油藏周期注水的主要作用机理：周期注水增强了层间压差及弹性力的作用，活化了毛细管力和重力的作用，使高、低渗透层之间产生了油水交渗效应，增大了水驱波及系数，提高了水驱采收率。
The cyclic water flooding in layered heterogeneous sandstone reservoir has been studied by means of VIP simulator and pseudo-2 -layer geologic model in order that the cyclic water flooding method would be tested and widely used in field. By studying the influence of various geologic development and factors on cyclic water flooding results in layered heterogeneous sandstone reservoir, the mechanism of cyclic water flooding in layered!heterogeneous sandstone reservoir has been derived; the interlayer pressure difference and elastic force are strengthened, capillary pressure and gravity are activated, flow passing alternately through low permeability and high permeability layers are caused in cyclic water flooding, and finally the reservoir volume and ultimate recovery factor by water flooding are improved.
出处
《西南石油学院学报》
CSCD
1997年第4期64-68,共5页
Journal of Southwest Petroleum Institute
关键词
砂岩油气藏
周期性
注水
数值模拟
油层
Sandstone reservoir
Cyclic injection
Heterogeneity
Numerical simulation
