陕北地区延长组长8储层特征及其控制因素分析  

Analysis of Chang8 Reservoirs Characteristics and Controlling Factors of Yanchang Formation in Northern Shaanxi

作　　者：程党性[1] 杜金良[1] 黄锦绣[1] 李元昊[1] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院,710021

出　　处：《低渗透油气田》2007年第1期30-34,共5页

摘　　要：陕北地区延长组长8作为一个新的勘探接替层系，越来越受到重视。通过研究区大量岩石薄片、铸体薄片以及扫描电镜、压汞等分析手段，对研究区长8储层的岩石学特征、孔隙类型以及孔喉结构进行了研究，在此基础上分析了储层控制因素。结果表明，陕北地区长8储层非均质性强，其中盐定地区储集性能好，环县一白豹地区次之，姬塬—安塞地区较差。Petrologic characteristics, pore types and pore-throat structures of the Chang8 reservoir in the study area are researched through analysis of large numbers of rock slices, cast sheet and SEM （scanning electron microscopy）, mercury intrusion and so on. Controlling factor of the reservoirs are analyzed on the above basis. The results showed that the Chang8 reservoir of northern Shaanxi is of strong heterogeneity, of which Yanchi-Dingbian areas are with good reservoir performance and the Huanxian-Baibao area is the second, and Jiyuan-Ansai area is poor.

关 键 词：储层特征 控制因素 陕北地区 沉积作用 成岩作用 

分 类 号：P618.130.2[天文地球—矿床学]