鄂尔多斯盆地贾崾岘油区长2~1油层组沉积相特征研究  

Sedimentary Facies Characteristics of Chang2~1 Oil Group in the JiaYaoXian Oil Region of Ordos Basin

作　　者：王萌[1] 高万朝 杨玉东[1] WANG Meng;GAO Wan-zhao;Yang Yu-dong(Dingbian Oil Production Plant of Yanchang Oilfield Company,Dingbian Shaanxi 718600,China)

机构地区：[1]延长油田股份有限公司定边采油厂,陕西定边718600

出　　处：《辽宁化工》2020年第9期1155-1158,1161,共5页Liaoning Chemical Industry

摘　　要：通过对岩石类型、颜色、沉积构造、粒度特征的研究,结合区域沉积背景、单井沉积微相、连井剖面等综合分析,确定了定边油田贾崾岘油区长2~1油层组沉积相类型及其沉积微相划分,并进行小层沉积微相及砂体平面展布规律研究。结果表明:贾崾岘油区长2~1油层组属于三角洲平原亚相沉积,主要发育水上分流河道和河道间微相,总体来看砂体的发育完全受控于沉积微相的展布,均呈北东—南西方向条带状展布。Through the study of petrological characteristics,rock color,sedimentary structure, particle size characteristics,combined with the comprehensive analysis of regional sedimentary background, single-well sedimentary microfacies and cross-well section, the types of sedimentary facies and sedimentary microfacies of Chang2~1 oil group in the Jiayaoxian oil region were determined,and sand-bodies of sedimentary microfacies patterns and the distribution of sand body were also studied. The results show that the Chang2~1 oil group in Jiayaoxian oil region belongs to the deltaic plain subfacies,which mainly develops the distributary channel and distributary interchannel microfacies. Generally, the development of sand body is completely controlled by the distribution of sedimentary microfacies, which are all in the north-to-south direction of banded distribution.

关 键 词：贾崾岘油区 长2~1油层组 三角洲平原亚相 水上分流河道 

分 类 号：P512.2[天文地球—地质学]