摘要
利用三江盆地绥滨坳陷新获取的地震、测井、钻井等勘探资料,通过构造解析和演化史研究认为三江盆地主要表现为中生代构造残留盆地与新生代伸展盆地的叠合,先后经历了晚侏罗世的断陷、早白垩世中—晚期的断陷和坳陷以及新生代的断陷-坳陷等4期成盆演化以及侏罗纪末和晚白垩世2期构造挤压改造。下白垩统含煤地层城子河组和穆棱组是绥滨凹陷中生界的主体。本文采用基于GIS的多层次模糊综合评价方法,从煤层气生气潜力和储气潜力两大项,考虑了煤类、煤厚、含气量、沉积相和构造地质条件等因素,对该区煤层气有利分布区进行了预测,提出绥滨坳陷东南部是煤层气勘探的最有利区域。
By using newly obtained seismic reflection profiles and drilling data, the structures and their evolution in the Suibin depression of the Sanjiang Basin were analyzed. Resutls show that the basin was a superimposed basin of Mesozoic residual and Cenozoic extensional basins, underwent four main evolution stages including the Late Jurassic rifting, the middle to late Early Cretaceous rifting and post-rifting, and the Cenozoic rifting and post-rifting, and two episodes of compressive events including the end of Jurassic and the Late Cretaceous. The coal-bearing Lower Cretaceous Chengzihe and Muling formations are the main successions in the Suibin depression. A multi-level fuzzy comprehensive evaluation method based on the Arcgis software was applied to predict favorable regions for coalbed methane exploration. Two aspects were focused in the evaluation including the coalbed methane gas potential and storage potentiate, g. ,type,thickness,gas content,sedimentary facies and structural conditions of the coals. The southeastern depression was suggested to be most favorable for coalbed methane exploration
出处
《高校地质学报》
CAS
CSCD
北大核心
2017年第2期259-267,共9页
Geological Journal of China Universities
基金
国家自然基金项目(41272231
41330207)
国家科技重大专项(2017ZX005008-001
2016YFC0601004
2017ZX05009-001)
中央高校基本科研业务费专项资金(2017FZA3008
2017XZZX007-01)联合资助
关键词
三江盆地
绥滨坳陷
构造演化
煤层气勘探
多层次模糊综合评价
Sanjiang Basin
Suibin depression
structural evolution
coalbed methane exploration
multi-level fuzzy comprehensive evaluation
