- 责任者：Gao Xiaoyue (State Key Laboratory of Petroleum Resources and Prospecting ; China University of Petroleum ; Beijing 102249 ; China) ; Liu Luofu
- 刊名：Acta Petrolei Sinica
- 出版年：2013
- 卷期：34(4)
- 关键词：页岩气 ; shale gas ; 油气藏形成 ; reservoir formation ; 塔里木盆地 ; Tarim Basin
- 页码：p.647-659
- 图表：illus., 2 tables, 62 refs.
- 分类号：1003
- issnNo：ISSN0253-2697
- isbnNo：CN11-2128/TE
Shale gas, as one of the most important unconventional energy resources, is of an enormous prospect of exploration and ex- ploitation. The Jurassic shale in the Tarim Basin is a typical continental deposit and is mainly deposited in swamped shallow lake, semi-deep lake, flooding swamp, flooding lake and lakeshore swamp facies. The organic matter is mainly of Type Ⅲ, with TOC var- ying between 0.5% ～3% and Ro between 0.5% ～2%. The Jurassic shale, with an accumulative thickness ranging between 204400 m and burial depth between 2 000～8 000 m, is mainly deposited in the Kuqa Depression, northeastern and southwestern Tarim Ba- sin. This Jurassic shale is mainly composed of quartz and clay minerals that are dominated by illite. The porosity ranges mainly be- tween 0.5 % and 4% and the permeability varies between 0. 006 mD and 0.01 mD. Granular and intergranular pores, organic nanop- ores and micro-fractures with 1～3 μm in width are well developed. The maximum adsorption capacity of the shale varies between 1 m3/t and 2 m3/t and is in direct proportion to the organic matter abundance and clay mineral content. Generally, the Jurassic shale in the Tarim Basin shows good accumulation properties, its distributional and geochemical characteristics are comparable with the five series of gas-containing shales in U. S. and with the Lower Paleozoic shale in the Sichuan Basin. Therefore, the Jurassic shale in the Tarim Basin is favorable for shale gas accumulations and is of good potential in hydrocarbon exploration and exploitation. Specifical- ly, the Kuqa depression and the southwestren Tarim are the most favorable areas for shale gas accumulations.