库车地区致密砂砾岩胶结指数m和饱和度指数n的主要影响因素及其量化研究  

Major Influential Factor and Quantitative Study on m Exponent and n Exponent in Kuche Region

作　　者：李军[1] 张超谟[1] 唐文生[1] 李进福[2] 肖承文[2] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学),湖北荆州434023 [2]塔里木油田分公司,新疆库尔勒841000

出　　处：《石油天然气学报》2009年第6期100-103,共4页Journal of Oil and Gas Technology

基　　金：国家科技重大专项项目(2008ZX05000-005-006)

摘　　要：塔里木盆地库车地区中、新生界中大量发育致密碎屑岩储层,储层以低孔低渗为特征。为精细储层定量评价需要,以大量实验数据为基础,分析了胶结指数m和饱和度指数n的主要影响因素,包括孔隙度、平均粒径、钙质或膏质胶结物含量以及裂缝等地质因素。通过地质统计方法,确定m值和n值与主要影响因素之间的定量关系,实现了利用测井资料连续计算m、n值,进而计算含油气饱和度。实践表明,采用这种方法大大提高了阿尔奇饱和度方程的适应性和饱和度评价精度。The tight clastic reservoirs of the Eogene Formation,which had the character of low-porosity and low permeability,were greatly grown in Kuche Region,Tarim Basin.On the basis of experimental data,for the needs of fine reservoir evaluation,the main geological factors of m exponent and n exponent (the exponents of Archie formula) were analyzed qualitatively,including the geological factors of porosity,average grain size,calcite cement,gypsum cement.By geological statistics,the qualitative correlation between m,n and major influential factors are determined.The values of m and n are continuously calculated by using logging data,and oil and gas saturation is consequently calculated.Application shows that this method is used for improving the adaptability of Archie formula and precision of saturation evaluation.

关 键 词：胶结指数m 饱和度指数n 含油气饱和度 低孔低渗储层 库车地区 

分 类 号：P631.84[天文地球—地质矿产勘探]