湖南省煤成气特征及重点区块抽采利用潜力

选择湖南省高瓦斯（突出）矿区，分析了其地质背景、聚煤期沉积环境及同沉积构造。结合煤成气成藏条件、含气性及煤储层物性特征，查明了煤成气资源，进行了地面抽采有利区块优选及其适用条件研究，确定了重点抽采区块，制定了高瓦斯矿区煤成气的抽采模式和开发应用规划，为煤成气勘查利用提供了理论依据和开发利用方向。

Characteristics of Coal Gas Formation and Utilization Potential of Key Blocks in Hunan Province

The high gas (prominent) mining area in Hunan Province is selected,its geological background,sedimentary environment and co sedimentary structure during coal accumulation are analyzed,combine coal forming gas accumulation conditions,gas bearing properties and physical properties of coal reservoirs are discussed,and coal derived gas resources is identified.The selection of favorable blocks for surface extraction is done and its applicable conditions are studied,the determination of key extraction blocks is done,the development of coal derived gas extraction mode and development and application planning in high gas mines are conducted,so as to provide theoretical basis and development and utilization direction for coal gas exploration and utilization in Hunan Province.