沁水盆地煤层气的水文地质控制作用

首次从沁水盆地水文地质条件出发，论述地下水来源、迳流状况，探讨石炭二叠系煤层及其主要含水层之间的水动力联系、水文地质作用对煤层含气性的影响；从构造及水动力学方面探讨煤系地层压力、煤储集层、含气饱和程度等特征及其变化原因；分析了盆地煤层气可采性的水文地质控制作用。在此基础上，预测盆地南部、寿阳地区南部为煤层气最有利勘探区，其次为盆地东部，盆地中、西部是颇具潜力的后备区。图３表２参２（梁大新摘

Hydro geological control on the coalbed methane in Qinshui basin.

This paper deals, for the first time, with the origin, areal flow of the underground water viewed from the hydrogeological conditions in Qinshui basin, the hydrological inter relationship between Permian Carboniferous coal beds and the main water bearing beds, the hydrogeological action on the gas containing properties of the coal beds, and the reasons causing the variation of the characteristics of gas containing coal beds such as formation pressure, gas saturation etc. from tectonic and hydrodynamic property view points, and analyzes the recoverable properties as well as the hydrogeological control properties. On this basis, it is predicted that southern part of this basis as well as southern Shouyang are the most favorable exploratory areas; the next will be the eastern part of this basin; and the central as well as the western part of this basin will be areas with greater potential.