油气地质

鄂尔多斯盆地华庆地区长6 油层组超低渗砂体成因分析

  • 李威 ,
  • 文志刚
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  • 1.成都理工大学沉积地质研究院, 四川成都610059;2.中国石油勘探开发研究院西北分院, 甘肃兰州730020
王宏波(1975-),男,高级工程师, 成都理工大学在读博士研究生,研究方向为沉积学及石油地质学。地址:(730020)甘肃省兰州市城关区雁儿湾路535 号。电话:(0931)8686005。E-mail:whb2233@163.com

网络出版日期: 2012-10-20

Origin of super-low permeability sand bodies of Chang 6 oil reservoir set in Huaqing area, Ordos Basin

  • LI Wei ,
  • WEN Zhigang
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  • 1. Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China; 2. PetroChina Research Institute of Petroleum Exploration & Development-Northwest, Lanzhou 730020, China

Online published: 2012-10-20

摘要

砂质碎屑流是对“鲍玛序列”和“浊积扇”等深水沉积理论的部分否定和完善。根据野外露头、岩心观 察,样品分析与测试,砂体特征分析及砂体形态描述等,认为鄂尔多斯盆地华庆地区长6 油层组超低渗厚 层块状砂体主要为砂质碎屑流沉积,改变了传统认为湖盆中心只发育规模较小浊流沉积的观点。进一步 研究认为,砂质碎屑流等深水重力流沉积主要受深水沉积坡折带控制,华庆地区长6 油层组超低渗砂体 属典型缓坡型砂质碎屑流沉积类型。

本文引用格式

李威 , 文志刚 . 鄂尔多斯盆地华庆地区长6 油层组超低渗砂体成因分析[J]. 岩性油气藏, 2012 , 24(5) : 61 -64 . DOI: 10.3969/j.issn.1673-8926.2012.05.011

Abstract

The theory of sandy debris flowis partial negation and improvement of deep-water sediments concepts such as Bouma sequence and turbidite fan. Based on crop, core observation, sample analysis, combined with sand body characteristics, it is considered that the sandy debris flow is the dominant sediments of Chang 6 oil reservoir set in Huaqing area, which changes the traditional concept of that there is only small-scale turbidite in the center of the lake basin. The further study suggested that the sandy debris flow is mainly controlled by deep water sedimentation slope break belt. The thick-bedded super-lowpermeability sand bodies of Chang 6 oil reservoir set in Huaqing area is typical gentle slope sandy debris flowsediment.

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