中国石油勘探 ›› 2009, Vol. 14 ›› Issue (3): 15-19,1.

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中上扬子地区志留系龙马溪组页岩气资源潜力评价

陈波,皮定成   

  1. 油气资源与勘探技术教育部重点实验室(长江大学);长江大学地球科学学院
  • 出版日期:2009-06-15 发布日期:2009-06-15

Silurian Longmaxi Shale Gas Potential Analysis in Middle & Upper Yangtze Region

Chen Bo and Pi Dingcheng   

  1. Chen Bo1,Pi Dingcheng21. MOE Key Laboratory of Exploration Technologies for Oil and Gas Resources, Yangtze University, Jingzhou City, Hubei Province 434023; 2. School of Geoscience, Yangtze University, Jingzhou City, Hubei Province 434000
  • Online:2009-06-15 Published:2009-06-15

摘要: 中上扬子地区志留系以泥页岩沉积为主,其中龙马溪组下部发育富含有机质的泥页岩。这套泥页岩是在鲁丹期冰川消融期海平面快速上升时沉积的,受台地古地形的影响,厚层富烃泥页岩主要分布在川东、湘西及鄂东地区。龙马溪组泥页岩以含碳粉砂质泥页岩为主,分布稳定;有机碳含量最高达到6.5%,在石柱冷水溪剖面TOC大于1.0%的厚度近105m,有机质类型以Ⅰ—Ⅱ为主,成熟度高,是页岩气勘探的潜力地区。

关键词: 中上扬子地区, 志留系, 页岩气, 资源潜力

Abstract: Mud shale deposition takes the majority of Silurian in Yangtze Region. Mud shale of rich organic matter presents in Lower Longmaxi Formation. It was deposited as sea level rose rapidly in the Rhuddanian. Influenced by ancient terrain of platform, thick hydrocarbon-rich mud shale is mainly distributed in eastern Sichuan, western Hubei and northern Hunan. Longmaxi mud shale is mainly sandy shale containing carbon powder that is distributed stably. Measured total organic carbon values (TOC) exceed 6.5% and total thickness (TOC>1.0%) approximate 105m in Shizhu area of Sichuan. The organic matter type is mainly I or II types and has highly thermal maturity. The potential of exploration for shale gas is great in the region.

Key words: Middle & Upper Yangtze Region, Silurian, shale gas, resource potential

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