鄂尔多斯盆地深层煤层气资源量丰富，神木气田X区块是冀东油田在该盆地的重点勘探开发区块，其深层本溪组8号煤层是该区块的重要建产资源，主要通过水平井钻探和大规模压裂改造的方式进行生产。本溪组8号煤层局部构造多变，煤层脆、软，钻速快，易坍塌，水平段轨迹控制难度大，储层钻遇率难以得到有效保障。因此，如何提高煤层气水平井的储层钻遇率并实现快速钻井、完井，成为该领域勘探开发所面临的关键技术难题。基于此开展地质、地震、测井、录井、钻井等多学科技术研究，形成以精细地震构造解释为前提、以近钻头方位伽马成像分析为核心的深层煤层气水平井地质导向技术，包括煤层构造精细刻画、煤层特征预测、着陆井轨迹控制、煤层综合判定、水平段地质导向和钻井工程参数控制等多项关键技术。通过这些技术的有效整合与合理运用，实现了水平井的精准着陆和实时水平轨迹的精细调整。在该区块探评井和先导试验井的地质导向实践中，水平井地质导向技术已展现出显著效果，煤层钻遇率由首口风险探井的70.4%提升至目前的平均值94.0%，此外，该技术还实现了工程井眼轨迹的光滑顺畅，确保了下套管和固井施工的顺利实施，缩短了钻井、完井周期。深层煤层气水平井的高效钻井、完井为后续大规模压裂改造和效益开发生产打下了坚实的资源基础，对鄂尔多斯盆地其他区块深层煤层气地质导向具有较好的借鉴意义。

The Ordos Basin is rich in deep coalbed methane resources, with block X of the Shenmu gas field being a key exploration and development area for the Jidong Oilfield in the basin. The deep Benxi Formation the 8th coal seam is an important production resource in this block, mainly produced through horizontal well drilling and large-scale fracturing operations. The Benxi Formation the 8th coal seam is characterized by complex local structures, brittle and soft coal layers, fast drilling rates, and a tendency for collapse, making trajectory control of the horizontal section difficult and posing a challenge to achieving a high rate of reservoir drilling encounter. Therefore, improving the high drilling encounter rate of coalbed methane horizontal wells and achieving rapid drilling and completion have become key technical challenges in the exploration and development of this domain. To address these challenges, multidisciplinary technical research, including geology, seismic analysis, logging, mud logging, and drilling, were conducted. This research led to the development of a deep coalbed methane horizontal well geological guidance technology, which included fine seismic structural interpretation as the foundation and near-bit orientation gamma imaging analysis as the core. This technology involved several key aspects: precise coal seam structural characterization, coal seam feature prediction, landing trajectory control, overall coal seam determination, geological guidance for the horizontal section, and control of drilling engineering parameters. Through the effective integration and proper application of these technologies, precise well landing and fine-tuning of the horizontal trajectory in real time were achieved. In geological guidance practices in the exploration and pilot test wells of this block, the horizontal well geological guidance technology demonstrated significant results, increasing the coal seam drilling encounter rate from 70.4% in the initial risk exploration well to the current average of 94%. Additionally, this technology ensured smooth and seamless wellbore trajectory, facilitating the successful implementation of casing and cementing operations and shortening the drilling and completion cycle. The efficient drilling and completion of deep coalbed methane horizontal wells have laid a solid resource foundation for subsequent large-scale fracturing and economic production, providing valuable insights for geological guidance in deep coalbed methane exploration in other blocks of the Ordos Basin.