On the basis of rich data available, the authors systemetically studied the deposition characteristices, gas content potential and permeability of reservior in the Carboniferous and the Permian, West Henan. It is regarded that material conditions to generate coalbed gas and geological conditions are existed. Geological factors that affect coalbed gas exploration and development are emphasized and gas content potential and permeability of reservoir are stated in detial. It is put forward that the main geological factors that affect gas content potential of coal seams are diagenetic metamorphism of coal seams, effective thickness of overburden layer and overlying cover conditions, and permeability of coal seam is mainly affected by coal structure, cleat development and sliding structure. The key geological factors that affect coalbed gas exploration and development in the Carboniferous and the Permian, West Henan are not the abundance of coalbed gas resources and resource volume but reservoir conditions of coal seam. Combined with the permeability of coal seam and geological conditions for coalbed gas storage, the fairway, general area and bad area are divided based on coalbed gas exploration and development prospect. Coalbed gas exploration and pilot development shall be conducted firstly in coal-bearing area in Pingdingshan.%以丰富的资料对豫西地区石炭-二叠系煤层的沉积特征、含气性和储集层的渗透性进行了系统的研究，认为该区具有煤层气生成的物质基础和赋存的地质条件。以影响煤层气资源勘探开发的地质因素为重点，详细论述了煤层含气性和储集层渗透性，认为导致煤层含气性变化较大的主要地质因素是煤的演化变质程度、上覆有效地层厚度和上覆盖层条件，煤储集层渗透性主要受煤体结构类型、割理发育性和滑动构造改造程度的控制。豫西地区石炭-二叠系煤层气资源勘探开发的关键地质因素不是煤层气资源的丰度和资源量，而是煤层的储集层条件。综合煤储集层渗透性特征及煤层气赋存地质条件，认为煤层气资源勘探开发前景有利区为平顶山、宝丰和临汝含煤区,较有利区为禹县南部、新安和陕渑含煤区,不利区为偃龙—荥巩、登封—新密和禹县北部含煤区。平顶山含煤区应作为煤层气勘探开发试验部署的首选区。图2表3参3 (宁正伟摘)
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