|
|
Exploration Prospect of the Cambrian Niutitang Formation Shale Gas in Northwestern Hunan |
LI Guo-liang, BAI Dao-yuan, WANG Xian-hui, LUO Peng, JIANG Wen, XIONG Xiong |
Oil & Gas Research Center, Hunan Institute of Geological Survey, Changsha,Hunan 410116, China |
|
|
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.
|
Received: 24 November 2014
|
|
|
|
|
[1] 王祥,刘玉华,张敏,等.页岩气形成条件及成藏影响因素研究[J].天然气地球科学,2010,21(2):350-356. [2] 张金华, 魏伟, 钟太贤. 国外页岩气资源储量评价方法分析[J]. 中外能源, 2009, 16(9): 38-42. [3] 张金川,薛会,张德明,等.页岩气及其成藏机理[J].现代地质,2003,17(4):466. [4] 陈更生,董大忠,王世谦,等. 页岩气藏形成机理与富集规律初探[J].天然气工业,2009,29(5):17-21. [5] Anping Yang, Graig Davis, 陈更生, 等. 中国页岩气地质研究进展[M]. 北京: 石油工业出版社, 2011: 50-60. [6] 陈玉明, 高星星, 盛贤才. 湘鄂西地区构造演化特征及成因机理分析[J].石油地球物理勘探,2013,48(增刊1):157-162. [7] 吴朝东.湘西震旦—寒武纪交替时期古海洋环境的恢复[J]. 地学前缘,2000,7(S1):45-57. [8] 湖南省地质矿产局. 湖南省区域地质志[M]. 北京: 地质出版社, 1988: 41-61. [9] 朱定伟, 丁文龙, 邓礼华,等. 中扬子地区泥页岩发育特征与页岩气形成条件分析[J].特种油气藏,2012,19(1):34-37. [10]张琳婷, 郭建华, 焦鹏,等. 湘西北下寒武统牛蹄塘组页岩气藏形成条件与资源潜力[J].中南大学学报(自然科学版),2014,45(4):1163-1171. [11]李国亮,柏道远,王先辉,等.湖南震旦—志留系页岩气成藏条件及勘探前景[J].湖南地学新进展,2014(11):308-315. [12]王阳, 朱炎铭, 陈尚斌, 等. 湘西北下寒武统牛蹄塘组页岩气形成条件分析[J]. 中国矿业大学学报, 2013, 42(4): 588-594. [13]Cheng A L, Huang W L. Selective adsorption of hydrocarbon gases on clays and organic matter[J].Organic Geochemistry,2004,35:413-423. [14]李苗春, 姚素平, 丁海,等. 湘西牛蹄塘组黑色岩系的地球化学特征及其油气地质意义[J].煤炭学报,2013,38(5):854-862. [15]马超,宁宁,王红岩,等.湘西-黔东地区牛蹄塘组页岩气勘探前景[J].特种油气藏,2014,21(1):38-41. [16]周庆华,宋宁,王成章,等.湖南花垣页岩气区块地质评价与勘探展望[J].天然气地球科学,2014,25(1):130-139. [17]林柘,张金川,李博,等.湘西北常页1井下寒武统牛蹄塘组页岩气聚集条件及含气特征[J].石油学报,2014,35(5):839-845. [18]韩双彪, 张金川, 李玉喜,等. 黔北地区下寒武统牛蹄塘组页岩气地质调查井位优选[J]. 天然气地球科学,2013,24(1):182-186. [19]王光凯, 焦鹏. 湘西北地区下寒武统牛蹄塘组页岩气成藏条件[J].能源与节能,2013,1:35-51. [20]龙鹏宇, 张金川, 李玉喜,等.重庆及其周缘地区下古生界页岩气成藏条件及有利区预测[J].地学前缘,2012,19(2):221-233. [21]游先军, 戴塔根, 息朝庄,等. 湘西北下寒武统黑色岩系地球化学特征[J].大地构造与成矿学,2009,33(2):304-312. [22]曹双林, 潘家永, 马东升,等. 湘西北早寒武世黑色岩系微量元素地球化学特征[J].矿物学报,2004,24(4):415-418.
|
[1] |
HU Hui, ZHOU Ping. Extraction of alteration information and oreprospecting based on ASTER data in Liuyuan area of Gansu Province[J]. , 2017, 4(5): 86-92. |
[2] |
CUI Kai. Geological characteristics and resource potential of shale gas from well Suiye 1 in the Niutitang Formation, northern Guizhou[J]. , 2016, 3(3): 16-20. |
[3] |
HUANG Xing-wen, HU Xiao-lin, GUO Yun, WANG Ke. Gabon Basin Salt Characters and Its Influences on Pre-salt Oil and Gas Exploration[J]. , 2015, 2(3): 40-48. |
|
|
|
|