低渗、特低渗透率油藏润湿性对储层性质的影响  

Influence of Wettability of Low- and Extra-Low Permeability Reservoirs to Reservoir Properties

作　　者：周荣安[1] 雷月莲[1] 刘天定[1] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院

出　　处：《低渗透油气田》2009年第1期72-78,共7页

摘　　要：储层的润湿性是影响油藏性质的一个重要因素之一，在低渗、特低渗透率油藏中表现的最为突出。主要表现为两个方面：一是储层的润湿性改变了油、气、水在孔隙中的分布状况，引起岩石电性的变化，使测井解释常常出现失误；二是储层的润湿性改变了流体在孔隙中的渗流规律，给油田开发带来了困难。通过对长庆油田主要层位长8、长6和长2储层润湿性分析，总结出了在特低渗透率油藏中润湿性与储层性质之间的关系。为油田的高效开发提供了依据．The wettability of reservoirs is mainly expressed in two aspects： 1. Wettability of reservoirs changes distribution of oil, gas and water in reservoir pores to result in change of electrical properties of rock, which may frequently cause mistakes in well logging interpretation; 2. Wettability of reservoirs changes percolation laws of fluid in reservoir pores, which may bring difficulties to oilfield development. The relationship between wettability and reservoir properties of extra-low permeability reservoirs is summarized to provide basis for efficient development of oil fields, through analysis of reservoir wettability of main horizons （Chang8, Chang6, and Chang2） in Changqing Oilfield.

关 键 词：润湿性 毛细管作用力 测井解释符合率 自然产能 

分 类 号：TE341[石油与天然气工程—油气田开发工程]