澳大利亚博文盆地中部地区煤层气富集主控因素分析

doi:10.13776/j.cnki.resourcesindustries.20170323.013

资源与产业 ›› 2017, Vol. 19 ›› Issue (2): 57-65.DOI: 10.13776/j.cnki.resourcesindustries.20170323.013

澳大利亚博文盆地中部地区煤层气富集主控因素分析

俞益新 1，吴晓丹 1，谷峰 1，唐颖 1，石雪峰 2

(1 中海石油气电集团有限责任公司技术研发中心，北京 100028；2中海油能源发展股份有限公司工程技术分公司，天津 300457)

收稿日期:2017-01-22 修回日期:2017-03-23 出版日期:2017-04-20 发布日期:2017-04-25

THE DOMINANT CONTROLS OF COALBED METHANE ACCUMULATION IN CENTRAL BOWEN BASIN IN AUSTRALIA

YU Yi-xin 1, WU Xiao-dan 1, GU Feng 1, TANG Ying 1, SHI Xue-feng 2

(1.Technical Research and Development Center, CNOOC, Beijing 100028, China;2.Engineering Technology Branch, CNOOC, Tianjin 300457, China)

Received:2017-01-22 Revised:2017-03-23 Online:2017-04-20 Published:2017-04-25

摘要/Abstract

摘要： 澳大利亚博文盆地是典型的弧后聚煤盆地，煤层气商业化开发较早，其中部地区勘探程度低，是潜在的储量接替区，但煤层气富集规律尚不清楚，为此，分析盆地中部地区的构造特征、煤层发育特点、煤岩煤质与含气性等地质特征。研究结果表明，该区构造变形强烈，煤层埋深处于100~800 m，煤层厚8~22 m，煤岩灰分与惰质组含量较高，Ro为1.5%~2.5%，煤层含气量普遍较高。通过深入剖析构造动力条件、煤岩演化条件及煤质条件与含气量的相关关系，认为：该区煤层气富集以构造动力条件为主要影响因素，斜坡、逆断层下盘等保存条件好的区域煤层含气量高，在背斜轴部、靠近断层等区域，煤层气保存条件差，含气量低；在相似的构造条件下，煤层气富集还受到煤质及演化程度的影响。

关键词: 博文盆地, 煤层气, 主控因素, 含气性, 构造条件, 保存条件

Abstract: Bowen basin in Australia as a typical back-arc coal basin has a long history in commercially development coalbed methane. Parts of this basin is less explored, where is of coalbed methane potential, but with its concentration rule unknown. This paper studies its structure, coal beds, coalbearing rock, coal quality and coalbed methane geology. The structure had undergone a strong structural deformation. Coalbed, 8~22 m thick, is buried at a depth of 100~800 m, high ash and inertinite content, Ro 1.5%~2.5%, high CBM. From the relation of structure, coal-bearing rock evolution and coal quality with CBM, the structural dynamic play a leading role in enriching CBM, which is high in slope or footwall of thrust fault where has a well preservation condition, low in axis of anticline, near the fault zone where has a poor preservation. Enrichment of CBM is also influenced by coal quality and coal evolution degree under similar condition.

Key words: Bowen basin, CBM, dominant control, gas content, structure, preservation

中图分类号:

F206

俞益新，吴晓丹，谷峰，等. 澳大利亚博文盆地中部地区煤层气富集主控因素分析[J]. 资源与产业, 2017, 19(2): 57-65.

YU Yi-xin, WU Xiao-dan, GU Feng, TANG Ying, SHI Xue-feng . THE DOMINANT CONTROLS OF COALBED METHANE ACCUMULATION IN CENTRAL BOWEN BASIN IN AUSTRALIA[J]. Resources & Industries, 2017, 19(2): 57-65.

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澳大利亚博文盆地中部地区煤层气富集主控因素分析

THE DOMINANT CONTROLS OF COALBED METHANE ACCUMULATION IN CENTRAL BOWEN BASIN IN AUSTRALIA

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