石油实验地质2016，Vol.38Issue(2)：178-182,188,6.DOI:10.11781/sysydz201602178
阿尔金南缘山前侏罗系页岩气地质特征
Geological characteristics of the Jurassic shale gas play in the frontal area of the southern Altun Tagh
摘要
Abstract
The Jurassic shales were deposited in the frontal area of the southern margin of the Altun Tagh, but shale gas exploration or assessment has not be carried out. Some samples have been analyzed and tested using field geological surveys and core observation and description to determine the distribution and organic geochemical characteristics of shale layers in the Jurassic. Also the occurrence and distribution of effective shales in the frontal area of the Altun Tagh were identified. The Dameigou Formation, which forms the majority of the Jurassic shale layers, developed in a semi⁃deep lacustrine environment and shale was distributed in the NE-SW direction along the frontal area. Total organic carbon ( TOC) ranges from 1.00% to 5.19% for high organic matter abundance, the organic matter maturity (Ro) varies from 1.11%to 2.87%, and the organic matter is dominated by type⁃II1 kerogen to type⁃II2 kerogen. The shale layers of the Dameigou Formation in the frontal area are thick, the abundance of organic matter is high, the type and the thermal evolution stage are favorable to produce gas, and comparison with North American deposits suggests that the geological conditions to accumulate shale gas are good. There are four favorable exploration targets for shale gas, including Yueyashan, Heishishan-Sanjiaojia, Chaishuigou-Qingshuihe, and Mangya areas.关键词
页岩气/地质特征/有机地化/侏罗系/阿尔金山前Key words
shale gas/geological condition/organic geochemistry/Jurassic/frontal area of the Altun Tagh分类
石油、天然气工程引用本文复制引用
李伟奇,康志宏,周磊,童雪飞,皇甫静静..阿尔金南缘山前侏罗系页岩气地质特征[J].石油实验地质,2016,38(2):178-182,188,6.基金项目
国家自然科学基金项目（41272132）和中国地质调查局地质调查项目（12120113040000）资助。 （）
