大牛地奥陶系马五段岩溶白云岩储层主控因素

doi:10.11885/j.issn.1674-5086.2016.02.28.01

西南石油大学学报(自然科学版) ›› 2017, Vol. 39 ›› Issue (3): 23-33.DOI: 10.11885/j.issn.1674-5086.2016.02.28.01

大牛地奥陶系马五段岩溶白云岩储层主控因素

白晓亮^1,2, 张哨楠², 丁晓琪³, 湛小红², 陈泉键²

1. 中国石油西南油气田分公司勘探开发研究院, 四川成都 610051;
2. 西南石油大学地球科学与技术学院, 四川成都 610500;
3. 成都理工大学能源学院, 四川成都 610059

收稿日期:2016-02-28 出版日期:2017-06-01 发布日期:2017-06-01
通讯作者: 白晓亮,E-mail:bxl7336@163.com
作者简介:白晓亮,1985年生,男,汉族,陕西岐山人,博士研究生,主要从事储层地质学、储层地球化学研究工作。E-mail:bxl7336@163.com;张哨楠,1957年生,男,汉族,河南南阳人,教授,博士生导师,主要从事储层地质学与储层地球化学方面的研究。E-mail:ZSN@cdut.edu.cn;丁晓琪,1981年生,男,汉族,甘肃武威人,副教授,博士,主要从事储层地质学方面的研究工作。E-mail:Xiaoqiding@qq.com;湛小红,1990年生,女,汉族,湖北钱江人,硕士研究生,主要从事储层地质方面研究工作。E-mail:hongxiaozhan@126.com;陈泉键,1992年生,女,汉族,四川北川人,硕士研究生,主要从事储层地质方面研究工作。E-mail:wwpo4291592@163.com
基金资助:
国家科技重大专项（2011ZX04045）

Main Controlling Factors of the Karst Dolomite Reservoir of Ma 5 Member in Daniudi Area

BAI Xiaoliang^1,2, ZHANG Shaonan², DING Xiaoqi³, ZHAN Xiaohong², CHEN Quanjian²

1. Research Institute of Petroleum Exploration and Development, PetroChina Southwest Oil & Gas Field Company, Chengdu, Sichuan 610051, China;
2. School of Geosciences and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
3. College of Energy, Chengdu University of Technology, Chengdu, Sichuan 610059, China

Received:2016-02-28 Online:2017-06-01 Published:2017-06-01

摘要/Abstract

摘要： 针对鄂尔多斯盆地大牛地气田马五段储层成因的多样性，开展对岩溶白云岩储层主控因素的研究。通过岩芯、薄片观察及物性分析，明确了白云岩储层岩石学、储集空间及物性特征，并在此基础上利用测井，建立储层的识别标准。通过测井解释，运用风化壳残余厚度图和连井剖面，解释白云岩储层的主控因素，最后认为：（1）岩溶微古地貌沟槽溶蚀作用极为强烈，多发育溶蚀垮塌角砾岩，储层发育极差；岩溶高地储层相对较好；（2）岩性的差异导致白云岩储层溶蚀程度的强弱，膏质白云岩边溶蚀边垮塌，横向上延伸范围较广，垂向上可形成较深的垮塌，加剧了岩溶发育程度，含极少膏质白云岩容易发育溶孔及裂缝，有利储层发育；（3）不同白云石化作用造成储层的非均质性，准同生期发育的泥晶白云岩较为致密，粉细晶白云岩孔隙较为发育，且两者互层分布使得储层纵向上变化较大，但横向上较为连续。

关键词: 大牛地, 马五段, 白云岩, 岩溶作用, 白云石化作用

Abstract: We discuss the main controlling factors of the karst dolomite reservoir of the Ma 5 Member in the Daniudi area, with the aim of understanding its complexity and diversity. Through core and thin section observation, and analysis of porosity and permeability properties, we studied the petrology, reservoir space, and physical properties of the dolomite reservoir. Based on this analysis, we constructed a reservoir identification standard using well logging data, and inferred the main controlling factors of the dolomite reservoir through logging interpretation, the residual thickness of crust, and the profile of connected wells. We concluded that:(1) the hollows in the karst topography were intensively corroded, and had developed into collapse breccias which display weak reservoir properties, and the karst upland reservoir is generally superior; (2) lithologic differences determine the extent of dolomite reservoir dissolution, with gypsum dolomite being simultaneously corroded and collapsed and it is distributed in a comparatively wide area. However, serious collapse may occur vertically, which contributes to karst development. Solution pores and cracks, which are conducive to reservoir development, can easily develop in gypsum-bearing dolomite; (3) different dolomitization causes dolomite reservoir heterogeneity. Micrite dolomite in the penecontemporaneous period is tight and more pore spaces have developed powder-fine dolomite. Both types are interbedded, which makes the reservoir vary greatly laterally, but relatively continuous horizontally.

Key words: Daniudi, Ma 5 Member, dolomite, karstification, dolomitization

中图分类号:

TE121

白晓亮, 张哨楠, 丁晓琪, 湛小红, 陈泉键. 大牛地奥陶系马五段岩溶白云岩储层主控因素[J]. 西南石油大学学报(自然科学版), 2017, 39(3): 23-33.

BAI Xiaoliang, ZHANG Shaonan, DING Xiaoqi, ZHAN Xiaohong, CHEN Quanjian. Main Controlling Factors of the Karst Dolomite Reservoir of Ma 5 Member in Daniudi Area[J]. 西南石油大学学报(自然科学版), 2017, 39(3): 23-33.

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大牛地奥陶系马五段岩溶白云岩储层主控因素

Main Controlling Factors of the Karst Dolomite Reservoir of Ma 5 Member in Daniudi Area

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