鄂尔多斯盆地东缘晋西挠褶带临兴中部区块深部煤层气资源潜力大，基于区内煤层气地质评价和单井试采效果，从试采井生产特征入手，分析深部煤层气井气水产出特征。重点从裂缝展布和应力特征方面，浅析深部煤层气井控产地质因素，同时结合煤系气多类型气层（致密气层、煤层）匹配关系，探讨了区内深部煤层气潜在可采地质模式。结果表明：①临兴区块煤层气资源潜力巨大，具有“煤层厚、含气量高、煤岩煤质较好、煤岩顶底板封盖好、滞留水环境”特征，煤层埋深较深，高应力、低孔低渗是制约区内煤层气开采的主要地质因素。②深煤层应力较大，以常规清水压裂为主的直井单压煤层模式难以有效压裂煤层、气井生产效果较差；“兼压砂层差气层、主采煤层气”模式可改善深部煤层气开发效果，且直井产气曲线仍以煤层气典型形态为主，具有“单井见气快、产水多,易应力敏感、气产量上升缓慢”的特点；③煤系地层微裂缝发育区为深煤层单井突破的潜力区。依据临兴区块现有气井开发经验，临兴区块深部煤层气可划分出2种潜力地质开发模式，其中“内生外储型”的Ⅰ型可采地质模式是目前深部煤层气开发现实可行的优选地质模式。“内生外储型”Ⅱ型可采地质模式、“内生内储”的Ⅰ型可采地质模式是后期深部煤层气开发的潜力接替模式。

The deep coalbed methane resources in the central part of Linxing which lies in the eastern margin of Ordos Basin are potentially abundant. Based on the geological evaluation of coalbed methaneand the effect of single well test in this area, this paper describes the gas and water output characteristics of the deep coalbed methane well, and then analyzes the geological factors affecting the productivity of single wells. This paper focuses on the geological factors controlling the production of deep coalbed methane wells in terms of crack distribution and stress characteristics. Then, it describes the matching relationship of multi-type gas layer (tight gas layer and coalbed methane) of coal-based gas to discuss the potential recoverable geological models of deep coalbed methane in the area.The research shows that:①The potential of coalbed methane resources in the block is relatively large, with characteristics of thick coal seam, high gas content, good coal quality, good sealing of coal rock roof and bottom, and water retaining environment. But, high stress,poor porosity and permeability are the main geological factors that restrict the exploitation of coalbed methane in the area.② Due to the large coal seam stress in the deep coal seam, it is difficult to effectively fracture the coal seam with the single-pressure coal seam mode dominated by conventional clean water fracturing in vertical wells and the production effect is poor. The development effect of deep coalbed methane can be improved by the mode of “double pressure sand bed poor gas layer and main mining coalbed methane”. The gas production curve of the vertical well is still dominated by the typical form of coalbed methane, and it has the characteristics of “quick gas production in a single well, high water production, easy stress sensitivity and slow increase in gas production”.③ The micro-fracture development zone of the coal-bearing strata is the potential area for the single-well breakthrough in deep coal seams.Based on the existing experience of gas well development in Linxing Block, two potential geological mining models have been explored. Among them, the type Ⅰ geological mining model of “endogenous and external storage type” is the realistic and feasible geological mode for the mining of deep coal seams in the region.The type Ⅱ of “endogenous external storage type” geological mining model and the “endogenous internal storage” type Ⅰ geological mining model are potential replacement modes for the later mining of deep coalbed methane.