天然气地球科学

• 非常规天然气 • 上一篇    

湖南花垣页岩气区块地质评价与勘探展望

周庆华,宋宁,王成章,李博,王先德,彭传圣,任玉秀   

  1. 1.中国石油大学(北京)地球科学学院,北京102249;
    2.中国华电工程(集团)有限公司油气开发分公司,北京100035;
    3.中国华电集团科研总院,北京  100035
  • 收稿日期:2013-09-30 修回日期:2013-12-17 出版日期:2014-01-10 发布日期:2014-01-10
  • 通讯作者: 周庆华zhqh2008@sohu.com. E-mail:zhqh2008@sohu.com.
  • 作者简介:周庆华(1973-),男,黑龙江大庆人,高级工程师,博士后,主要从事油气地质与地球化学研究. E-mail:zhqh2008@sohu.com.
  • 基金资助:

    国土资源部页岩气探矿权项目(编号:GT2012YQTKQCR0001)资助.

Geological Evaluation and Exploration Prospect of Huayuan Shale Gas Block in Hunan Province

ZHOU Qing-hua,SONG Ning,WANG Cheng-zhang,LI Bo,WANG Xian-de,PENG Chuan-sheng,REN Yu-xiu   

  1. 1.College of Earth Sciences,China University of Petroleum,Beijing 102249,China;2.Oil and Gas Company,China Huadian
    Engineering CO.LTD,Beijing 100035,China;3.China Huadian Science and Technology Institute,Beijing 100035,China.
  • Received:2013-09-30 Revised:2013-12-17 Online:2014-01-10 Published:2014-01-10

摘要:

利用露头、钻井、岩心等资料,以构造、沉积、地球化学、储层和含气性等研究为重点,对湖南花垣区块下寒武统牛蹄塘组页岩气形成的地质条件与特征进行了初步探索,指出区块构造简单,深水陆棚、半深海—深海沉积环境控制牛蹄塘组页岩发育与分布,富有机质页岩厚度大,有机质类型为Ⅰ型,有机碳含量一般大于2.5%,有机质成熟度RO值大于2.0%,达到高—过成熟阶段;页岩的矿物以石英和黏土矿物为主,硅质含量较高、碳酸盐含量低、黏土矿物中主要以伊利石和伊/蒙混层为主,利于后期压裂改造和吸附气的大量富集;储层具有致密非渗特征,但含气性较好;目的层顶\,底板具有封盖性,保存条件较好。通过地质评价和资源量计算,花垣区块牛蹄塘组页岩气资源量较为丰富,勘探有利区面积大,具备较好的页岩气形成地质条件,是较现实的页岩气勘探开发区域。

关键词: 花垣区块, 页岩气, 地质评价, 有利区, 牛蹄塘组, 评价参数, 勘探展望

Abstract:

Based on the tectonic,sedimentary,geo-chemistry,reservoir,and gas potential studying,we systematically discusses the forming conditions and characteristics of the Lower Cambrian Niutitang Formation shale gas by using outcrop,drilling,and core data.It indicates that deep shelf and half-bathypelagic sedimentary environment controlled the development and distribution of the Niutitang Formations organic-rich black shale.The black shale is characterized by high thickness,fine kerogen type,rich organic matter content and high thermal evolution.The mineral composition of shale is quartz and clay minerals (illite and montmorillonite mixture),with high siliceous and low carbonate composition.It is useful for absorbing gas and fracturing shale reservoir.Through the geological evaluation and resources calculation,the Niutitang Formation in the Huayuan block has favorable geological conditions for shale gas resources enrichment.Therefore,it is considered as a the practical targets of shale gas exploration and production.

Key words: Huayuan block, Shale gas, Geological evaluation, Favorable area, Niutitang Formation, Evaluation parameters, Exploration prospect

中图分类号: 

  • TE132.1

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