摘要
综述沁水盆地煤层气地质的相关研究成果。根据研究,沁水盆地煤层气地质特征可以总结为:主要为高—过成熟的热成因气,仅有少量次生生物气;太原组煤层较山西组煤层吸附性强、渗透性好;煤层的含气性在南部相对较好,在西北部最差;煤层一般发育两组裂隙且以吸附孔为主,盆地南部部分裂隙被热液矿物充填;深成变质与燕山期构造热事件叠加所引起的二次生烃是盆地煤层气藏形成的主要气源,沁南富气区的勘探前景较好。关于煤层气成藏动力场的研究,已经实现了多因素耦合的研究方法。煤层气成藏分析相关研究已经对边界和类型作出划分和厘定。
Based upon the study of the representative publications in recent years, the present paper summaries the characteristics of CBM geology in Qinshui Basin. Most of it is thermogenic gas which formed in high and over ma- ture stage, only a small amount of secondary biogenic gas. Coal seam of Taiyuan group has better coal strong ad- sorption, good permeability than in Shanxi group. Gas content in coal seams in the south is relatively good, in the northwest is the worst. Coalbed generally develops two groups of fracture and adsorption pores, part of the fracture that in southern part of the basin is filled by hydrothermal minerals. Plutonic metamorphism and Yanshan tectonic thermal events superimposed caused the secondary hydrocarbon generation is the main gas source of Basin CBM res- ervoir formation, Qinnan gas rich area have a good exploration prospect. On the basis of the existing research the main problems and next research orientation of CBM geology in Qinshui Basin are further discussed.
出处
《重庆科技学院学报（自然科学版）》
CAS
2013年第6期70-74,共5页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
国家科技重大专项(2011ZX05033-004)
关键词
沁水盆地
煤层气
地质特征
动力场
吸附性
成藏分析
Qinshui Basin
coalbed methane
geological characteristics
dynamic field
adsorption
reservoir analysis
