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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)
Based on the abundant data, the sedimentary characteristics, gas-bearing and permeability of Permo-Carboniferous coal seams in western Henan have been systematically studied. It is considered that this area has the material basis and the geological conditions of coalbed methane formation . Based on the geological factors influencing the exploration and development of coalbed methane resources, the coalbed gas and reservoir permeability are discussed in detail. It is considered that the major geological factor that causes the coalbed gas to change greatly is the degree of coal evolution and overcoach The thickness of the strata and overburden conditions, the permeability of coal reservoirs are mainly controlled by the type of coal body structure, the development of cleat and the degree of sliding structural improvement. The key geological factors of exploration and development of Carboniferous-Permian coalbed methane resources in western Henan are not the abundance and resources of CBM resources but the reservoir conditions of coal seams. According to the permeability characteristics of coal reservoirs and the geological conditions of coalbed methane, the favorable prospects of coalbed methane resources exploration and development are Pingdingshan, Baofeng and Linru coal-bearing areas. The more favorable areas are southern Yu County, Xin’an and Shantou Coal, unfavorable area for the Yan Long - Gong Gong, Dengfeng - Xinmi and coal in northern Yu County. The Pingdingshan coal-bearing area should be the preferred area for CBM exploration and development pilot deployment. Figure 2 Table 3 Senate 3 (Ning Zheng Wei picks)