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湘中涟源煤盆地早石炭世测水组、晚二叠世龙潭组煤系是中国东南诸省境内最重要的煤系,具有较大的生气、储气能力。本文从煤系的构造热滨化、构造、沉积及煤层理深等方面论述了研究区测水组、龙潭组煤系中煤层气形成气藏的条件,并指出煤层气的开发远景区应该在煤盆地近南缘的诸含煤向斜南西扬起端,其中各主要区域性断裂交汇而成的断块是最重要的靶区。
The Late Carboniferous Hydrothermal Formation in the Lianyuan coal-bearing basin in Hunan Province and the Longtan Formation in the Late Permian coal series are the most important coal measures in the southeastern provinces in the PRC, with a large capacity of gas generation and gas storage. This paper discusses the conditions of formation of gas reservoirs in the study area, Longtan Formation coal seam, from the tectonism of hydrothermal formation, tectonics, sedimentation and coal seam depth, and points out that the prospect of CBM development should be at In the near southern margin of the coal basin, coal-bearing synclines begin to rise from the southwest to the west, of which fault blocks formed by convergence of major regional faults are the most important targets.