鄂西下寒武统牛蹄塘组页岩特征及页岩气富集主控因素

张焱林; 段轲; 刘早学; 金春爽; 陈科; 罗凡

doi:10.11781/sysydz201905691

鄂西下寒武统牛蹄塘组页岩特征及页岩气富集主控因素

doi: 10.11781/sysydz201905691

1. 湖北省地质调查院, 武汉 430034;
2. 中国地质调查局油气资源调查中心, 北京 100029

基金项目:

国家科技重大专项“大型油气田及煤层气开发”项目（2016ZX05025）和南方页岩气基础地质调查工程“南方地区1∶5万页岩气基础地质调查填图试点”项目（DD20160182）联合资助。

详细信息

作者简介:
张焱林(1984-),男,硕士,工程师,从事页岩气地质调查与资源评价综合研究。E-mail:396575193@qq.com。

中图分类号: TE122.11
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- 文章访问数: 947
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- 被引次数: 22
出版历程
- 收稿日期: 2019-01-18
- 修回日期: 2019-07-30
- 刊出日期: 2019-09-28

Characteristics of shale and main controlling factors of shale gas enrichment of Lower Cambrian Niutitang Formation in western Hubei

1. Hubei Institute of Geological Survey, Wuhan, Hubei 430034, China;
2. Oil & Gas Survey, China Geological Survey, Beijing 100029, China

摘要

摘要: 综合大量野外露头、钻井、气测录井、地震、岩石矿物学分析、有机地球化学以及现场解吸等数据，对鄂西宜昌—秭归地区下寒武统牛蹄塘组黑色含气页岩特征、岩石物性、矿物成分、孔隙结构和含气性等地质特征进行了系统研究，并对页岩气富集主控因素进行了初步探讨。鄂西宜昌—秭归地区下寒武统牛蹄塘组黑色页岩主要以深水陆棚沉积为主，TOC含量平均值约3.2%，有机质处于过成熟阶段，矿物成分富含碳酸盐矿物，石英次之。页岩有机质孔隙和微裂缝发育，现场解吸及气测录井均显示含气性较好，且页岩单层有效厚度和总厚度越大，页岩含气性越好。
- 富有机质页岩 /
- 主控因素 /
- 牛蹄塘组 /
- 下寒武统 /
- 鄂西地区
Abstract: We conducted some detailed studies of shale characteristics, physical properties, mineral composition, pore structure and gas content, and further offered a preliminary discussion about the shale gas enrichment regularity of the Lower Cambrian Niutitang Formation in the western Hubei by combining outcrop and core descriptions, gas logging, seismic cross section, mineralogical analysis, organic geochemical analysis with site desorption data. The black shale of the Lower Cambrian Niutitang Formation in Yichang and Zigui area was deposited mainly on a deep water shelf. The average TOC content is~3.2% and the organic matter is over-mature. The samples are dominated by clay minerals with quartz the second. The greater the effective thickness and total thickness of the shale in a single layer, the better the gas-bearing capacity of the shale.
- organic-rich shale /
- main controlling factors /
- Niutitang Formation /
- Lower Cambrian /
- western Hubei

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