镇北地区延长组层序地层划分及含油气特征  

STRATA SEQUENCE DIVISIONS AND HYDROCABON-BEARING CHARACTERISTICS OF THE YANCHANG FORMATION IN ZHENBEI REGION

作　　者：杨全民[1] 杨兰锁 李擘 

机构地区：[1]西安石油大学油气资源学院,西安710054 [2]东方地球物理勘探有限责任公司研究院长庆分院,西安710021 [3]中油甘肃销售分公司,兰州730030

出　　处：《陕西地质》2008年第1期46-52,共7页Geology of Shaanxi

摘　　要：依据层序地层学原理,应用钻井、测井和地震等资料,对镇北地区延长组地层层序进行划分。可将其划分成四个三级层序(S1,S2,S3,S4)。每个层序又包括三个体系域;即低位体系域、水进体系域和高位体系域。研究结果表明:层序对含油气特征的控制主要表现在两个方面:(1)层序控制了生储盖的组合;(2)层序控制着储层的展布和储集性能,综合反映延长组合油气特征。According to the sequence of stratigraphy, by means of some data of drilling log, well logging and seismic, we make classification and contrast on the strata sequence of Yanchang Formation in Zhenbei Region and divide it into four sequences （S1, S2, S3 and S4） and every strata sequence contains three systematic ranges： Low-water Level Systematic range, Transgressive Systematic range, and High-water Level Systematic range. The research shows that 1） the sequence controls the combination of source-reservoir-cap; 2） the sequence controls the distribution and some accumulative properties of the reservoirs; and synthetically reflects some hydrocarbon-bearing characteristics of Yanchang Formation.

关 键 词：鄂尔多斯盆地 镇北地区 延长组 地层层序 沉积体系域 含油气特征 

分 类 号：P618.130.2[天文地球—矿床学]