南海东部低孔低渗储层测井评价方法  

Logging evaluation of low porosity and permeability reservoirs in the east of South Sea of China

作　　者：宋延杰[1] 王海琦[1] 唐晓敏[1] 王瑛[2] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]中海油田服务股份有限公司油田技术事业部,北京101149

出　　处：《大庆石油学院学报》2010年第6期106-110,共5页Journal of Daqing Petroleum Institute

基　　金：黑龙江省自然科学基金项目(TE2005-24)

摘　　要：针对南海东部储层具有孔隙度小、渗透率低、孔隙结构复杂、束缚水饱和度高等特点,采用参数单相关分析方法,优选影响束缚水饱和度和渗透率的主要参数,利用多元回归法建立渗透率和束缚水饱和度解释模型;考虑可动水和微孔隙水导电路径不同及黏土附加导电,基于岩电实验结果和有效介质对称导电理论,建立南海东部低孔渗砂岩含水饱和度模型.实际应用表明储层评价方法求取的参数精度较高,且应用效果好.Since the reservoirs in the east of South Sea of China are characterized by low porosity,low permeability,complex pore structure and high capillary bound water saturation,capillary bound water saturation and permeability are difficult to determine.In the paper a correlation analysis method is used to optimize the main parameters that influence capillary bound water saturation and permeability,and then multiple regression is used to establish capillary bound water saturation and permeability interpretation models.Considering the differences of electrical paths of free water and capillary bound water,and clay excess conductance,the water saturation model in low porosity and low permeability reservoirs is given based on the experimental results of rock electrical conductivity and symmetrical effective medium conductance theory.Practical application shows that the accuracy of determination of parameters is enhanced,and good results are achieved.

关 键 词：低孔低渗储层 单相关分析 参数优选与建模 微孔隙水导电 黏土附加导电 有效介质对称导电理论 含水饱和度 

分 类 号：P631.4[天文地球—地质矿产勘探]