高校地质学报2012，Vol.18Issue(3)：447-452,6.
黔西盘县地区煤层气成藏的构造控制
Tectonic Control of Coalbed Methane Reservoirs in Panxian, Western Guizhou
摘要
Abstract
Turning towards the geological complex conditions of coalhed methane (CBM) in Panxian, western Guizhou, the tectonic control of the CBM reservoir was discussed taking the tectonic evolution as a basic approach and combining with the geological field observation and the lab analysis. Results showed that four tectonic stages in the area have be experienced including the intra-continental rift stage from Devonian to Permian, stable platform stage from Early to Middle Triassie, continental depression stage from Late Triassic to Middle Jurassic and fault-folded uplift stage form Late Jurassic to Quaternary. Coal seams occur in the synclines indicating an obvious syncline control of CBM resources. The Late Permian coal-bearing strata were characterized by two periods of subside burials, two periods of uplift erosions and three periods of coalifications. Middle Yanshanian tectonic movement was a key period to CBM reservoiring, in which the modern occurrence of the coal rank was built by the telemagmatic metamorphism on the deep burial metamorphism setting. High CBM content in the area is caused importantly by the compressive and compressive-shear structures. Modern tectonic stress field with the nearly east-west direction of horizontal compression might make the coal seam permeability in the Tucheng and Zhaozihe synclines higher than that in the Panguan and Jiupuan synclines.关键词
贵州盘县/构造演化/煤层气/控气作用Key words
Panxian/ tectonic evolution/ coalbed metahne/ gas-controlled effect/ Guizhou分类
天文与地球科学引用本文复制引用
窦新钊,姜波,秦勇,屈争辉,李明..黔西盘县地区煤层气成藏的构造控制[J].高校地质学报,2012,18(3):447-452,6.基金项目
国家自然科学基金项目(40730422,40672101)和国家重大科技专项项目(2011ZX05034)联合资助 （40730422,40672101）
