黑龙江东部三江盆地绥滨坳陷构造演化与煤层气勘探评价

发布时间：2019-05-16 06:17

【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。
[Abstract]:Based on the newly obtained seismic, logging, drilling and other exploration data in Suibin Depression of Sanjiang Basin, through structural analysis and evolution history, it is considered that Sanjiang Basin is mainly characterized by the superposition of Mesozoic tectonic residual basin and Cenozoic extensional basin. It has experienced four stages of basin-forming evolution, such as late Jurassic fault depression, early Cretaceous middle-late fault depression and Cenozoic fault depression-depression, as well as structural compression transformation at the end of Jurassic and late Cretaceous. The lower Cretaceous coal-bearing strata Chengzihe formation and Muling formation are the main bodies of the Mesozoic in Suibin sag. In this paper, the multi-level fuzzy comprehensive evaluation method based on GIS is used to consider the factors such as coal type, coal thickness, gas content, sedimentary facies and tectonic geological conditions from the two major items of coalbed methane gas generation potential and gas storage potential. The favorable distribution area of coalbed methane in this area is predicted, and it is pointed out that the southeast of Suibin depression is the most favorable area for coalbed methane exploration.
【作者单位】：浙江大学地球科学学院;教育部含油气盆地构造研究中心;大庆油田勘探开发研究院;
【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
【分类号】：P618.13

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