鄂尔多斯盆地大牛地气田盒2、3段沉积微相研究  

Sedimentary microfacies of He2 and He3 Member in Daniudi gas field of Ordos basin

作　　者：罗东明[1] 陈召佑[2] 吝文[3] 苑保国[3] 向树安[3] 

机构地区：[1]中国石化油田勘探开发事业部,北京100029 [2]中国石化华北分公司勘探开发研究院,郑州450006 [3]中国地质大学能源学院,北京100083

出　　处：《大庆石油地质与开发》2007年第5期21-24,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金(40672078)资助项目

摘　　要：通过岩心观察,认为工区盒2、3段,不仅仅发育单一河流相沉积体系,而是发育一套辫状河三角洲-浅湖沉积体系。识别并划分了工区内沉积相、沉积亚相、沉积微相。另外,对工区特有沉积特点的研究,结合沉积过程和岩性特征,对重点沉积微相进一步划分为超微相。早二叠世,鄂尔多斯盆地克拉通沉积阶段,盆地内部坡度非常平缓的地形和北部蚀源区的抬升是形成大牛地气田辫状河三角洲-浅湖沉积体系的主要地质背景。Based on core observation, it is thought that not only single fluvial facies sedimentary system but also a set of braid river delta-shallow lacustrine sedimentary system are developed in He2 and He3 Member. The sedimentary facies, subfacies and microfacies can be identified. In addition, according to the research on sedimentary characteristics, sedimentary process and lithology characteristics, the important microfacies are divided into ultra-microfacies. In lower Permian, the Craton depositional period of Ordos basin, the flat landform in the basin and the lifting of the north provenance are the main geological environment for the formation of braid river delta-shallow lacustrine sedimentary system in Daniudi gasfield.

关 键 词：鄂尔多斯盆地 大牛地气田 辫状河三角洲-浅湖沉积体系 沉积相 

分 类 号：TE121.3[石油与天然气工程—油气勘探]