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成煤过程中伴随有大量天然气的生成,并在有利条件下能聚集成气藏(田)。本文从煤成气观点出发,对有关沁水盆地否定评价提出了异议,讨论了该盆地天然气生成及气藏形成条件的基本地质因素。对盆地煤系地层总生气量,可能从煤层和泥质岩中运移出的气量以及可能聚集气量作了估算,并指出了那种认为煤层生成天然气大部分被煤层吸附了的看法是值得讨论的,肯定了该盆地的含气远景,在此可能找到中、小型气藏(田),并提出进行勘探的建议。
During the coal formation, a large amount of natural gas is generated, and can be gathered into gas reservoirs (fields) under favorable conditions. Based on the view of coal gasification, this paper disagrees with the negative evaluation of Qinshui Basin and discusses the basic geological factors of natural gas generation and gas reservoir formation conditions in this basin. It is estimated that the total amount of gas generation in the coal measures in the basin, the amount of gas that may have migrated from the coal and argillaceous rocks and the amount of possible gas accumulation, and pointed out the view that the majority of natural gas generated by the coal seam is adsorbed by the coal seam is worth discussing , Confirmed the gas prospect of the basin. It is possible to find medium and small gas reservoirs (fields) and put forward proposals for exploration.