Abstract：Niutitang formation black shales are widely distributed in northwestern Hunan, which are the deposition products of reduction environment during Early Cambrian (Terreneuvian-Epoch 2), where the moderate buried depth and large thickness provide good gas reservoir conditions. Physical and chemical analysis shows the black shales are characterized by abundant organic matter (TOC: 0.59%~13.05%, average 3.75%), high maturity (Ro: 1.87%~4.00%, average 3.05%), good hydrocarbon generation potential (the kerogen is dominated by I type with minor II type), favorable reservoir reconstruction (brittle mineral content: 33%~87%, average 68%, clay mineral content:13%~43%, average 26%, and a high ratio of brittle mineral/ clay mineral), and low porosity and low permeability (porosity:0.3%~8.0%, average 3.3%, permeability less than 0.04×10-3 μm2). Comprehensive studies show that Niutitang formation has good potential for shale gas reserves, and the method of conditional probability volume was used to assess resources, which shows abundant shale gas reserves. In addition, six favorable prospecting areas for shale gas are divided in northwestern Hunan, which provides evidence for the further research of shale gas.
李国亮，柏道远，王先辉，罗鹏，姜文，熊雄. 湘西北地区寒武系牛蹄塘组页岩气资源前景[J]. 中国地质调查, 2015, 2(1): 31-39.
LI Guo-liang, BAI Dao-yuan, WANG Xian-hui, LUO Peng, JIANG Wen, XIONG Xiong. Exploration Prospect of the Cambrian Niutitang Formation Shale Gas in Northwestern Hunan. , 2015, 2(1): 31-39.
2015, Vol. 2 
