岩性油气藏 ›› 2016, Vol. 28 ›› Issue (6): 16–22.doi: 10.3969/j.issn.1673-8926.2016.06.003

• 油气地质 • 上一篇    下一篇

中国中部古老碳酸盐岩有效烃源岩存在的典型实例分析

谢云欣1,周 1,郭 1,陈义才1 Qiumei Zhou2
  

  1. (1. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China;2. Department of Energy and Mineral Engineering,Pennsylvania State University,University Park,PA,16802,US)
  • 收稿日期:2016-08-10 修回日期:2016-09-26 出版日期:2016-11-10 发布日期:2016-11-10
  • 第一作者:谢云欣(1989-),女,成都理工大学在读博士研究生,研究方向为油气成藏地质学。地址:(610059)四川省成都市成华区二仙桥东三路1号成都理工大学。E-mail:154046743@qq.com
  • 通信作者: 周文(1962-),男,博士,教授,主要从事非常规油气地质方面的教学和研究工作。E-mail:zhouwen62@cdut.edu.cn。
  • 基金资助:
    国家重大科技专项“海相页岩气储层评价方法研究”(编号:2016ZX05025002-005)与国土资源部地质调查项目“中国西部大型盆地碳酸盐岩成藏条件及资源潜力研究”(编号:1212011220757)联合资助

Typical cases analysis of effective source rocks existence in ancient carbonate rock of the middle basins of China

Xie Yunxin1 Zhou Wen1 Guo Min1 Chen Yicai1 Zhou Qiumei2
  

  1. 1. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation Chengdu University of Technology 610059,China 2. Department of Energy and Mineral Engineering Pennsylvania State University University Park PA 16802 US
  • Received:2016-08-10 Revised:2016-09-26 Online:2016-11-10 Published:2016-11-10

摘要: 针对古老碳酸盐岩能否成为有效烃源岩的问题,对我国中部盆地典型古老碳酸盐岩热解的实验结果和成烃实例的分析等展开研究,讨论了古老碳酸盐岩烃源岩能否有效生烃和排烃的问题。结果表明,泥灰岩和泥晶灰岩等相对富有机质岩石,热解模拟生烃量高。在数值模拟初次运移时期,泥灰岩和泥晶灰岩等烃源岩排油较为困难,排气是主要形式,且排气方式以微裂缝排气和扩散排气为主,所以,该类灰岩可以成为有效气源岩,这一认识为古老碳酸盐岩层系的烃源岩评价提供了理论依据。

关键词: 有机质丰度, 测井计算, 页岩气, 龙马溪组, 长宁地区, 四川盆地

Abstract: The question if ancient carbonate rocks can be effective source rocks was discussed through typical pyrolysis experiments results and examples in Ordos basin and Sichuan basin in middle of China. The results indicate that rocks such as marlstone and micrite with relatively high organic matter content have high quantity of hydrocarbon generation during pyrolysis experiments, and oil expulsion is probably difficult during primary migration, and gas expulsion is the main form which is mainly expulsed through microfracture and diffusion. It is suggested that marlstone and micrite with relatively high organic matter content are effective gas source rocks. This understanding provides theoretical basis for source rock evaluation of ancient carbonates.

Key words:  organic matter abundance, well logging calculation, shale gas, Longmaxi Formation, Changning area, Sichuan Basin

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