由于沉积环境的不同，海陆过渡相页岩与海相页岩存在较大差异。基于鄂尔多斯盆地东缘海陆过渡相页岩储层的特点，建立了纵向多岩性叠置储层水平井产能数值模型，分析了不同岩性组合模式下的气井单段生产动态特征，研究了煤层渗透率、储层叠置关系等关键参数以及生产制度对生产特征的影响。研究结果表明：①富煤型页岩储层合层开采初期气水同产，采出气主要来自砂岩和页岩储层的游离气，采出水主要来自压裂液及煤层水。煤层的渗透率越高，合层开采的累计产气量越大，累计产水量也随之提升。②含煤叠置组合类型进行合层开采最理想的空间叠置顺序为页—砂—煤，在该叠置顺序下，煤层产水对合层开采干扰最小。③煤层产气量受应力敏感的影响最大。

Distinct sedimentary environments lead to notable disparities between marine-continental transitional shale and purely marine shale. This study develops a numerical model to evaluate the productivity of horizontal wells in vertically multi-lithologic superimposed reservoirs, focusing on the marine-continental transitional shale reservoirs at the eastern margin of the Ordos Basin. The model analyses the dynamic characteristics of single-stage gas well production under various lithologic combination modes. It particularly investigates key parameters such as coal seam permeability, the superposition relationships of reservoirs, and the impact of the production system on output characteristics. The findings indicate that: ① In the early stages of combined extraction from coal-rich shale reservoirs, both gas and water are produced simultaneously. The gas primarily originates from the free gas in the sandstone and shale reservoirs, while the water is predominantly sourced from fracturing fluid and coal seam water. Notably, higher coal seam permeability correlates with increased cumulative gas and water production. ② The optimal spatial stacking sequence for combined layer mining in coal-bearing superimposed reservoirs is identified as page-sand-coal. This sequence minimizes the interference of coal seam water production on the overall mining process. ③ The production from coal seams exhibits significant stress sensitivity, impacting overall gas output.