摘要
将部分打开底水油藏内的流动视为上部平面径向流动和下部垂直单向流动的组合,利用上部的平面流动确定地层内压力分布的差异,而在下部流动中考虑地层内的压力差异和重力作用,导出了部分打开裂缝性底水油藏的水相分流量方程,可准确描述不同生产压差下的含水变化规律。水相分流量方程结合无因次采油(液)指数便可对油藏的产量变化规律进行预测。该理论的建立为底水油藏开发中的动态分析和预测提供了依据。
Fluid flow in partially perforated reservoir with bottom water is regarded as the combination of planar radial flow in the upper part and vertical uniflux in the lower part.Water fractional flow equation of partially perforated,fractured reservoir with bottom water has been derived by using the difference of pressure distribution determined by upper planar flow and by considering pressure difference and action of gravity in lower flow.This equation can accurately describe the change of water cut under different producing pressure differential.Oil production can be predicted by combination of water fractional flow equation and dimensionless productivity index.This provides basis for performance analysis and prediction in development of reservoirs with bottom water.
出处
《特种油气藏》
CAS
CSCD
2006年第5期56-58,61,共4页
Special Oil & Gas Reservoirs
基金
国家863项目"海上油田矢量井网研究"资助(项目编号:2004AA616170)
关键词
裂缝性底水油藏
含水率
产量
变化规律
分流量公式
产量预测
fractured reservoir with bottom water
water cut
production
fractional flow equation
production prediction
