鄂尔多斯盆地王渠则地区延9沉积相特征与砂体展布特征  

Sedimentary facies and sand distribution of Yan 9 in the Wangquze Area of the Ordos Basin

作　　者：张瑶瑶[1] 张旭[1] 李帅 Zhang Yaoyao;Zhang Xu;Li Shuai(Yanchang Oil Field Co.,Ltd..Jingbian Oil Mining Factory,Jingbian 718500,China;School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]延长油田股份有限公司靖边采油厂,陕西靖边718500 [2]西南石油大学地球科学与技术学院,四川成都610500

出　　处：《云南化工》2018年第11期98-102,共5页Yunnan Chemical Technology

摘　　要：靖边油田位于鄂尔多斯盆地伊陕斜坡的中部。利用岩心和测井资料对该区域的沉积相和砂体展布特征进行研究,结果表明,王渠则地区发育辫状河沉积,主要的沉积微相为河道和泛滥平原。顺物源方向,东部砂体厚且连通性好,中部河道砂体发育较薄且连通性一般;西部河道砂体较厚但连通性较差;在垂直物源方向,砂体呈孤立分布,连通性差,厚度在工区的西北部较厚。通过对比沉积相平面图和砂体厚度平面图,发现延911、延912、延922厚砂体集中分布在西南部,延913厚砂体集中分布在北东部,王渠则地区厚砂体集中分布在延921小层,且在工区分布较均匀,是下一步的重点勘探目标。Jingbian oilfield is located in the middle of yishan slope of ordos basin.There have been a large number of reservoir discoveries in this area,but few studies have been conducted on sedimentary facies and sand body distribution.In this paper,the characteristics of sedimentary facies and sand body distribution in this area have been studied by using core and logging data.The results showed that braided river deposits were developed in wangquze area,and the main sedimentary microfacies were channel and flood plain.In the direction of provenance source,the sand body in the east is thick and wellconnected;the sand body in the middle channel is thin and moderately connected,and the sand body in the west channel is thick but poorly connected.In the direction of vertical material source,the sand body is distributed in isolation with poor connectivity,and its thickness is relatively thick in the northwest of the work area.By comparing the sedimentary facies plan with the sand body thickness plan,it is found that the thick sand bodies of yan911,yan912 and yan922 are concentrated in the southwest,the thick sand bodies of yan913 are concentrated in the north and east,and the thick sand bodies of wangquze area are concentrated in the small layer of yan921 and distributed evenly in the working area,which is the key exploration target in the next step.

关 键 词：靖边油田 王渠则 延9层 沉积相 砂体展布 

分 类 号：P618.13[天文地球—矿床学]