S_(wi)与Φ关系及其油气层识别作用  

Relationship between Φ and S_(wi) and Its Application in Identification of Oil and Gas Reservoirs

作　　者：王正付[1] 李显路[1] 曾小阳[1] 

机构地区：[1]河南石油勘探开发研究院,河南南阳473132

出　　处：《河南石油》2000年第1期1-3,共3页Henan Petroleum

摘　　要：束缚水饱和度是描述地层特性的一个重要参数。它的求取对于确定地层流体性质、分析水淹状况、估算油气田的地质储量、渗透率、含水率都有着十分重要的意义。本文以岩石导电的电阻车模型为基础，导出了利用岩石孔隙度计算束缚水饱和度的关系式，即对于给定的岩性Swi与Φ在双对数坐标下呈抛物线关系，并用实验资料进行了验证。由该关系式建立的测井解释交会图版能有效地识别低阻油层。Irreducible water saturation (Swi) is a majorparameter in formation characteristics description which play a key role in determining properties of formation fluids, analyzing water flow status and calculating gcologicreserves, permeability and water - cut. A relationalexpression for calculating irreducible water saturation by using rock porosity is given in this paper and is verified with experimental data. Low resistivity oil layers can be identified easily on log interpretation crossplot chart constructed by using this relational expression.

关 键 词：束缚水饱和度 孔隙度 油气层识别 测井交会图版 

分 类 号：P618.130.8[天文地球—矿床学] TE311[天文地球—地质学]