页岩气富集与高产的地质因素和过程

范昌育; 王震亮

doi:10.11781/sysydz201005465

页岩气富集与高产的地质因素和过程

doi: 10.11781/sysydz201005465

范昌育^1,2,
王震亮^1,2

1.
大陆动力学国家重点实验室(西北大学), 西安, 710069
2. 西北大学, 地质学系, 西安, 710069

基金项目: "大型油气田及煤层气开发"国家科技重大专项课题"中西部前陆盆地油气成藏与富集规律"(2008ZX05003—002)

详细信息

作者简介:
范昌育(1982- ),男,博士生,主要从事油气运移成藏研究.E-mail:fcybestorc@163.com.

中图分类号: TE122.3
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出版历程
- 收稿日期: 2009-12-31
- 修回日期: 2010-08-07
- 刊出日期: 2010-10-28

GEOLOGICAL FACTORS AND PROCESS IN ENRICHMENT AND HIGH PRODUCTION OF SHALE GAS

Fan Changyu^1,2,
Wang Zhenliang^1,2

1.
State Key Laboratory for Continental Dynamics(Northwest University), Xi'an, Shaanxi 710069, China
2. Department of Geology, Northwest University, Xi'an, Shaanxi 710069, China

摘要

摘要: 在查阅大量页岩气研究文献的基础上,考虑到页岩气藏的独特性,结合与其它页岩气藏的横向对比,重点剖析并初步总结了影响美国Fort Worth盆地密西西比系Barnett页岩气富集与高产的地质因素,提出了相应的地质过程概念模型,以期对即将到来的中国页岩气的评价、勘探与开发有些许启示。分析认为,在诸多影响因素中,热成熟度、造成页岩易压裂性因素的存在以及二者的有效匹配,是页岩气能否富集与高产的最重要的因素,其地质过程可归纳为3个阶段,即低熟微裂缝开启生物气逸散阶段、高熟微裂缝胶结裂解气富集阶段、压裂微裂缝开启页岩气高产阶段。
- 热成熟度 /
- 超压 /
- 富集 /
- 裂缝 /
- 页岩气
Abstract: Based on referring to a large number of Chinese and foreign literatures,considering the peculiarity of shale gas reservoir and combining with the horizontal comparison with other shale gas reservoir,this paper focuses on analyzing and summarizing the geological factors in enrichment and high production of the Mississippian Barnett shale gas in the Fort Worth Basin of United States.Finally,the related conceptual model of geological process is proposed in order to offer a little inspiration for the assessment,the exploration and the development of Chinese shale gas,which will come.By the analysis of the influential factors,it is concluded that the thermal maturity,the factors which exist?in shale and make it fractured more easily and the validity matching of the two aspects are the most important factors that determine the enrichment and high production of shale gas.The geological process can be summarized into three stages: the first stage is that organic matter is in low maturity,micro-fractures are opened and biogenic gas is effusion;the second stage is that organic matter is in high maturity,micro-fractures are cemented and the cracked gas is enrichment;the third stage is that micro-fractures are reopened and the shale gas is highly produced under hydraulic fracturing.
- thermal maturity /
- overpressure /
- enrichment /
- fracture /
- shale gas

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参考文献(20)

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