深层低渗油层渗流规律及水驱油特征研究  

Seepage Flow Patterns and Water Driving Characteristics of Deep Low Permeability Oil Layers

作　　者：陈新平[1] 王胜利[1] 王中良[1] 盖东玲[2] 周锦成 

机构地区：[1]中原油田分公司勘探开发科学研究院,河南濮阳457001 [2]中原油田分公司油藏监测研究中心 [3]中原石油地质录井处

出　　处：《河南石油》2004年第2期32-34,共3页Henan Petroleum

基　　金：中国石化股份有限公司"十条龙"项目"复杂断块油田提高采收率技术(P01034)"资助

摘　　要：深层低渗油藏的渗流规律及水驱油特征具有特殊性。通过中原油田文13北块的岩心试验资料的分析、研究,认为深层低渗油藏单相流体渗流表现为非达西流特征,渗透率越低,启动压力梯度越大;油水两相渗流特性反映束缚水饱和度高,油水两相流动范围窄;具有垂直于流动方向裂缝的储层采收率最高。为该块及同类型油藏分析剩余油分布规律、制定合理的提高采收率方案提供了依据。Seepage flow patterns and water driving characteristics are special in deep low permeability oil layers. Based on analysis and study of core experiment data acquired from Wen 13 block in Zhongyuan oilfield, it is concluded that single phase seepage flow in deep low permeability reservoirs is characterized by non - Darcy flow. The lower the permeability is, the higher the starting pressure gradient; irreducible water saturation is high and the scope of oil and water two - phase flowing is narrow; and the oil recovery is the highest in reservoirs with fractures perpendicular to flow direction. It provides a basis for identifying remaining oil distribution and determining a rational program to enhance oil recovery in similar reservoirs.

关 键 词：深层低渗油层 渗流规律 水驱油特征 水驱油效率 

分 类 号：TE311[石油与天然气工程—油气田开发工程]