鄂尔多斯盆地富县地区马五段喀斯特储层发育规律

doi:10.11764/j.issn.1672-1926.2018.08.001

天然气地球科学

鄂尔多斯盆地富县地区马五段喀斯特储层发育规律

胡鑫，丁晓琪，梁昌健，朱颖，刘璇，徐小宇，陈乙莱

1.成都理工大学能源学院，四川成都 610059； 2.“油气藏地质及开发工程”国家重点实验室·成都理工大学，四川成都 610059； 3.成都理工大学地球科学学院，四川成都 610059

收稿日期:2018-07-05 修回日期:2018-08-30 出版日期:2018-12-10
通讯作者: 丁晓琪(1981-) ，男，甘肃武威人，副教授，博士，主要从事储层地质学与储层地球化学研究 E-mail:xiaoqiding@ qq.com
作者简介:胡鑫(1992-)，男，重庆奉节人，硕士研究生，主要从事储层地质学与储层地球化学研究.E-mail：huxin.92@qq.com.
基金资助:
国家科技重大专项“海相碳酸盐岩层系重点领域储层形成机理与发育模式”(编号：2017ZX05005-001-010)资助.

Development patterns of karst reservoir of Ma 5 member in Fuxian area,Ordos Basin

Hu Xin,Ding Xiao-qi,Liang Chang-jian,Zhu Ying,Liu Xuan,Xu Xiao-yu,Chen Yi-lai

1.Energy College,Chengdu University of Technology,Chengdu 610059,China; 2.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China; 3.College of Geoscience,Chengdu University of Technology,Chengdu 610059,China

Received:2018-07-05 Revised:2018-08-30 Online:2018-12-10

摘要/Abstract

摘要： 鄂尔多斯盆地富县地区位于岩溶高地，岩溶作用具有时间长强度大的特点，主力气层横向不连续。为了明确奥陶系马五段储层分布规律，通过岩心资料、测井资料及各种分析测试资料对富县地区马五段喀斯特储层进行研究，结果表明：①马五段地层角砾化严重，可以划分为4种岩溶相、3种洞穴相，岩溶强度自西向东逐渐增强；②马五段储层物性整体较差，储集空间主要为未被完全充填的溶蚀孔洞、膏模孔、裂缝及晶间溶孔，优质储层主要分布于北部马五6亚段顶部的裂纹—镶嵌角砾岩相中；③马五段储层发育规律主要受岩性、岩溶相—洞穴相和古地貌3个因素控制，岩性与古地貌控制岩溶相—洞穴相的形成与分布，岩溶相—洞穴相控制储层的分布规律。

关键词: 马五段, 喀斯特储层, 岩溶相, 洞穴相, 储层发育规律

Abstract: Fuxian area of Ordos Basin is located in the palaeokarst upland.The karstification of Fuxianwas characterized by long duration and high intensity of action.The main gas production layer of Fuxian is not continuous in transverse direction.In order to find out the regularities of distribution of reservoirs in Ma 5 member,karst reservoirs in the Ma 5 member are studied through data analysis of cores,well logging and various tests.The results show that:(1)Ma 5 member is severely brecated,and can be divided into 4 karst facies and 3 cave facies.The intensity of karstification gradually increases from west to east.(2)The Ma 5 member has poor physical properties,and the reservoir space is mainly constituted of vugs,gypsum moldic pores,fractures that are not completely filled,intercrystalline pores and intercrystalline pores.High-quality reservoirs mainly distributed in the crackle-mosaic breccia facies at the top of Mawu-6 in the north.(3)The development of reservoirs in Ma 5 member is mainly controlled by three factors:Lithology,karst and cave facies,and paleotopography.Lithology and paleotopography control the development and distribution of karst facies and cave facies,and further control the distribution of reservoirs.

Key words: Ma 5 member, Karst reservoir, Karst facies, Cave facies, Reservoir development

中图分类号:

TE122.2

胡鑫, 丁晓琪, 梁昌健, 朱颖, 刘璇, 徐小宇, 陈乙莱. 鄂尔多斯盆地富县地区马五段喀斯特储层发育规律[J]. 天然气地球科学, 2018, 28(12): 1748–1756.

Hu Xin, Ding Xiao-qi, Liang Chang-jian, Zhu Ying, Liu Xuan, Xu Xiao-yu, Chen Yi-lai. Development patterns of karst reservoir of Ma 5 member in Fuxian area,Ordos Basin[J]. Natural Gas Geoscience, 2018, 28(12): 1748–1756.

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