澳大利亚东部S区块煤层气储层特征及有利区预测

doi:10.12108/yxyqc.20190106

岩性油气藏 ›› 2019, Vol. 31 ›› Issue (1): 49–56.doi: 10.12108/yxyqc.20190106

澳大利亚东部S区块煤层气储层特征及有利区预测

淮银超^1,2, 张铭², 谭玉涵³, 王鑫⁴

1. 西北大学地质学系, 西安 710069;
2. 中国石油勘探开发研究院, 北京 100083;
3. 中国石油集团测井有限公司测井应用研究院, 西安 710077;
4. 中国石油长庆油田分公司第七采油厂, 西安 710200

收稿日期:2018-03-18 修回日期:2018-06-09 出版日期:2019-01-18 发布日期:2019-01-18
作者简介:淮银超(1988-),男,博士,主要从事油气田开发地质、测井解释方面的研究工作。地址:(710069)陕西省西安市太白北路229号西北大学地质学系。Email:hycchd2008@126.com。
基金资助:
青年科学基金项目“未固结砂岩中的井孔声波传播特征研究”（编号：41504090）、中央高校基金基础研究项目“页岩气储层测井评价方法研究”（编号：310826161021）与“疏松砂岩储层中的井中声波数值模拟”（编号：310826161014）联合资助

Reservoir characteristics and favorable areas prediction of coalbed methane in S block,eastern Australia

HUAI Yinchao^1,2, ZHANG Ming², TAN Yuhan³, WANG Xin⁴

1. Department of Geology, Northwest University, Xi'an 710069, China;
2. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China;
3. Research Institute of Logging Applications, CNPC Well Logging Company Limited, Xi'an 710077, China;
4. No.7 Oil Production Plant, PetroChina Changqing Oilfield Company, Xi'an 710200, China

Received:2018-03-18 Revised:2018-06-09 Online:2019-01-18 Published:2019-01-18

摘要/Abstract

摘要： 开发技术较成熟、需求量大等为澳大利亚东部S区块的低煤阶煤层气开发提供了良好的条件，但是缺乏系统性的关于低煤阶煤层气储层特征的研究。利用研究区的低煤阶煤层气区块的钻井、测井以及煤岩取心分析等资料开展煤层发育、煤质特征、储层物性、含气性以及保存条件等储层特征的研究。在此基础上，利用多层次模糊评价方法预测S区块的开发有利区。结果表明：澳大利亚东部S区块发育有6套中-高灰分长焰煤，累计厚度25 m，宏观上煤质以半亮煤-亮煤为主，显微组分中镜质组含量最高；孔隙结构以中孔和大孔为主，割理和裂缝较发育，渗透率为399.85 mD；含气质量体积平均为3.65 m³/t；良好的水文地质条件以及温度压力系统也在一定程度上保证了煤层气的富集。开发有利区分布主要受到含气量、累计厚度以及渗透率等因素控制。综合认为：澳大利亚东部S区块低煤阶煤层气资源具有较好的开发潜力。

关键词: 低煤阶煤层气, 含气量, 渗透率, 有利区预测, 澳大利亚

Abstract: The mature development technology and large demands of coalbed methane provide favorable conditions for the development of low rank coalbed methane in S block of eastern Australia. However,there is a lack of systematic research on the characteristics of low rank coalbed methane reservoirs. Therefore,the reservoir characteristics such as coal seam development,coal quality characteristics,reservoir physical properties,gasbearing property and preservation condition for low rank CBM were studied by using drilling,logging and core analysis data from S block,eastern Australia. On this basis,a multi-level fuzzy evaluation method was applied to predict favorable areas in S block. The results show that there are six sets of long flame coal with medium-high ash and a cumulative thickness of 25 m are developed in the study areas. Macroscopically,the coal is mainly composed of semi-bright coal and bright coal,the content of vitrinite is the highest in macerals,and vitrine is the dominated microstructure in coal. The pore structure is mainly mesopores and macrospores,cleats and fractures are relatively developed,and the permeability is 399.85 mD. The average gas content is 4.3 m³/t,and good hydrogeological conditions and temperature,pressure system also ensure the enrichment of coalbed methane to a certain extent. The distribution of favorable areas is mainly controlled by gas content,cumulative thickness and permeability. It is considered that the low rank coalbed methane resources in S block of eastern Australia have good potential for development.

Key words: low rank coalbed methane, gas content, permeability, favorable areas prediction, Australia

中图分类号:

TE122

淮银超, 张铭, 谭玉涵, 王鑫. 澳大利亚东部S区块煤层气储层特征及有利区预测[J]. 岩性油气藏, 2019, 31(1): 49–56.

HUAI Yinchao, ZHANG Ming, TAN Yuhan, WANG Xin. Reservoir characteristics and favorable areas prediction of coalbed methane in S block,eastern Australia[J]. Lithologic Reservoirs, 2019, 31(1): 49–56.

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澳大利亚东部S区块煤层气储层特征及有利区预测

Reservoir characteristics and favorable areas prediction of coalbed methane in S block,eastern Australia

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