宁夏银川市红墩子矿区红三井田煤层气赋存特征研究

Study on CBM Hosting Features in Hongsan Minefield,Hongdunzi Mining Area,Yinchuan City,Ningxia

概述了红三井田含煤地层及煤层,详细叙述了红三井田煤的吸附性、煤层含气量、气成分、煤层渗透性、储层压力等煤储层关键特征,对煤层气含气量控制因素的煤层生气条件、煤的储气能力、煤层埋藏深度、地质构造、煤层围岩封盖条件及水文地质条件进行了分析,分析表明,红三井田煤层气含量低,且煤层基本处于瓦斯风化带内,就煤层含气性而言,暂时不具备进行地面煤层气开采条件。

Coal-bearing strata and coal seams in the Hongsan minefield have been summarized and coal adsorptivity,coal seam gas content,gas composition,coal seam permeability and reservoir pressure etc coal reservoir key features accounted in detail.Coal seam gas generation condition,coal gas reservation capability,coal buried depth,geological structure,coal seam country rock sealing condition and hydrogeological condition etc controlling factors on CBM content have been analyzed.The analysis has shown that CBM content in Hongsan minefield is low and coal seams are basically within gas weathering zone.With respect to coal gas-bearing property,the area is temporary without condition to carry out surface CBM exploitation.