在分析鄂尔多斯盆地南部旬宜探区石炭系太原组成煤环境基础上，结合古地貌分析和沉积相研究，明确了太原组聚煤特征。利用工业分析、扫描电镜、等温吸附等实验分析手段，并且结合测井建模评价的方法，明确了煤层的煤岩和煤质、储集物性、含气性等特征，剖析总结了深层煤层气富集控气要素和成藏特征，从而指出了下一步有利区带。结合煤层气勘探实践，明确了深层煤层气具备良好的勘探前景。研究表明：①旬宜探区石炭系太原组煤层发育受潮坪泥炭坪、潟湖泥炭坪2种成煤环境影响。受成煤环境和沉积古地貌影响，煤层分布具有“西薄东厚”的聚煤特征。②煤岩类型以亮煤—半亮煤为主，煤体结构以原生—碎裂结构为主，发育植物胞腔孔、黄铁矿与黏土矿物晶间孔、割理裂隙等储集空间类型。③煤层含气量介于15.8~25.6 m³/t，含气性中等—较好。煤层气富集受控于成煤环境、构造演化、保存条件等因素。④西北斜坡区具有断层不发育、地层常压、地层水动力弱，煤层埋深大的特点，是深层常压煤层气勘探有利区；东南断坡区具有断层较发育、地层低压、地层水动力较强，煤层埋深中等的特点，是中深层低压煤层气勘探有利区。位于东南断坡区的PZ1井煤层压裂测试获低产气流，展示了鄂尔多斯盆缘复杂构造带深层煤层气具有较好的勘探前景。

Based on the analysis of the coal-forming environment of the Carboniferous Taiyuan Formation in Xunyi exploration area, southern Ordos Basin, and combined with paleogeomorphological analysis and sedimentary facies research, the coal accumulation characteristics of Taiyuan Formation were identified. By using experimental analysis methods such as industrial analysis, scanning electron microscopy, and isothermal adsorption, along with well-logging modeling evaluation, the characteristics of coal petrology and coal quality, reservoir physical properties, and gas content were investigated. The key controlling factors for deep coalbed methane accumulation and reservoir formation characteristics were analyzed and summarized, identifying favorable zones for further exploration. Integrated with coalbed methane exploration practice, it was confirmed that deep coalbed methane had promising exploration potential. Research showed that: (1) the development of coal seams in the Carboniferous Taiyuan Formation in the Xunyi exploration area was influenced by two coal-forming environments: tidal flat peat bogs and lagoon peat bogs. Due to the influence of coal-forming environments and sedimentary paleogeomorphology, the coal seam distribution exhibited a “thin in the west and thick in the east” coal accumulation pattern. (2) The coal lithotypes were primarily bright coal and semi-bright coal, with the coal body structures mainly characterized by primary and fractured types. The types of reservoir space included plant cell lumen pores, intercrystalline pores of pyrite and clay minerals, and cleat fractures. (3) The gas content of coal seams ranged from 15.8 to 25.6 m³/t, indicating moderate to good gas-bearing properties. The enrichment of coalbed methane was controlled by factors such as the coal-forming environment, tectonic evolution, and preservation conditions. (4) The northwest slope area was characterized by underdeveloped faults, normal formation pressure, weak formation hydrodynamics, and large coal seam burial depth, making it a favorable zone for deep normal-pressure coalbed methane exploration. The southeast fault slope area had relatively developed faults, low formation pressure, strong formation hydrodynamics, and moderate coal seam burial depth, making it a favorable zone for medium-to-deep low-pressure coalbed methane exploration. The PZ1 well, located in the southeast fault slope area, produced a low gas flow during coal seam fracturing tests, demonstrating the promising exploration potential of deep coalbed methane in the structurally complex margin of the Ordos Basin.