随着深层煤层气水平井的规模建产，其井间压窜问题也日益突显，严重影响邻近生产井的正常生产，为了避免与减缓井间压窜事件的发生以及促进压窜井的高效复产，以鄂尔多斯盆地东缘大宁–吉县区块深层煤层气水平井为研究对象，系统开展井间压窜评估。首先，依据压窜井压窜前后的产气、产液、氯离子浓度等生产及实验参数变化特征，建立井间压窜影响程度的量化指标，将其压窜影响程度按由弱至强划分为3级，依次为Ⅰ(弱干扰)、Ⅱ(中等干扰)、Ⅲ(强干扰)。然后，基于大宁–吉县区块客观地质条件和开发生产实践认识，运用多因素的灰色关联分析法，评价了开发部署(井间距离、水平段位置、垂深)、地质(天然裂缝强度)、工程(平均单簇用液规模、射孔簇数、单段用液规模、施工排量)、排采(母井生产时间)等四大类九小项影响因素，最终确定井间距离、母井生产时间、平均单簇用液规模、天然裂缝为大宁–吉县区块深层煤层气水平井压窜的主要控制因素，并基于此形成了对应的预防对策。最后，基于井间压窜影响程度的强弱及压窜主控因素分析，按照压窜井由弱至强的排液需求，从而针对性、差异化的形成了常规排液、强排措施、连油分段排液、更换采气工艺等4类高效复产措施。现场试验表明，该研究成果对大宁–吉县区块深层煤层气减小井间压窜及高效复产具有重要的指导意义。

With the large-scale construction and production of deep coalbed methane horizontal wells, the problem of inter-well frac hit has become more and more obvious, which seriously affects the normal production of neighboring wells. In order to avoid and slow down the occurrence of inter-well frac hit and promote the efficient recovery of tampered wells, we systematically carry out the evaluation of inter-well frac hit by taking the deep coalbed methane horizontal wells of Daning-Jixian block in the eastern edge of Ordos Basin as the research object. Firstly, based on the production and experimental parameters such as gas production, liquid production and chloride ion concentration before and after the pressure frac hit, the quantitative indexes of the influence degree of the pressure frac hit between wells were established, and the influence degree of the pressure frac hit was classified into three grades from weak to strong, which were Ⅰ (weak interference), Ⅱ (medium interference) and Ⅲ (strong interference) in the order of the degree of influence of the pressure frac hit. Then, based on the objective geological conditions of Daning-Jixian block and the understanding of development and production practice, using the multi-factor gray correlation analysis method, we evaluated four categories and nine sub-factors of influencing factors, such as development and deployment (distance between wells, location of horizontal section, vertical depth), geology (strength of natural fracture), engineering (average scale of single-cluster fluid, number of perforation clusters, scale of single-section fluid, and construction displacement), and drainage and extraction (production time of the parent well), the distance between wells, production time of the parent well, average single-cluster fluid size, and natural fracture were identified as the main control factors for the pressure frac hit of deep-seated coalbed methane horizontal wells in Daning-Jixian block, and corresponding preventive countermeasures were developed based on these factors. Finally, based on the analysis of the strength of the influence degree of pressure frac hit between wells and the main controlling factors of pressure frac hit, four types of high-efficiency production recovery measures, such as conventional drainage, strong drainage measures, oil-linked segmental drainage, and replacement of gas extraction process, are formed in a targeted and differentiated manner according to the drainage needs of pressure frac hit wells from weak to strong. The field test shows that the research results are of great significance for reducing the pressure frac hit between wells and efficient production recovery in Daning-Jixian block.