摘要
为研究辽河坳陷东部凸起古生界煤层气勘探开发潜力,以优选有利区为目标,利用钻井、地震、录井、测井、煤岩心化验分析及动态测试资料,通过对煤层沉积条件、生气条件、储集条件、构造条件、岩性组合条件以及水文地质条件的研究,探讨了辽河坳陷东部凸起古生界煤层气成藏地质条件,描述了煤层气藏特征,并对有利区进行评价。结果表明:研究区古生界煤系地层沉积环境为潮坪、泻湖亚相,煤层发育、分布稳定;煤岩经历两期变质作用,变质程度高、产气量大;储集层裂缝发育,有利于煤层气储集;后期构造活动较弱,煤层封闭性好;水文地质条件有利,保存条件好;煤层气为热解成因,成藏主要受构造因素控制;资源勘探潜力大.
Exploration and development potential of Paleozoic coal bed methane （CBM） in Eastern uplift, Liaohe Depression, is tremendous. Aiming at advantageous area optimization, this research carded out the reservoir forming conditions, of Paleozoic coal bed methane though analysis of sedimentary conditions, hydrocarbon generation, reservoir condition, structure condition, the lithology combination and hydrogeological conditions based on drilling, seismic, logging, well logging, core analysis and dynamic test data. Meanwhile, characteristics of CBM reservoir was described, and the favorable zones were evaluated. The depositional environments are tidal fiat and lagoon with stable distribution. Coal rock has undergone two phases of high degree metamorphism to generate a large number of gases. Coal reservoir with fracture development is favorable to coal bed methane reservoir. Hydro-geological conditions are favorable for preservation. Coal-bed gas formation is mainly controlled by the structural factors. Exploration potential is great.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2016年第12期1426-1433,共8页
Journal of Liaoning Technical University (Natural Science)
基金
国家重大科技专项(2010ZX05005)
关键词
煤层气
东部凸起
古生界
辽河坳陷
成藏条件
coal bed methane
the east uplift
paleozoic
liaohe depression
reservoir forming conditions
