随着常规气田的可动用储量越来越少，致密气等难动用资源逐渐受到重视。为了增加致密砂岩气田储量动用程度，针对地质构造特征、测井数据，建立了地质气藏各属性精细化模型，评价了目标层位的地质甜点、工程甜点，优选了水平井分段分簇位置，开展了多段多簇裂缝形态模拟及气藏产量数值模拟，分析了水平井开发效果并提出了气田后续产能挖潜的措施，进而形成了致密砂岩气藏地质工程一体化模拟技术。研究结果表明：利用有限元方法建立的压裂模型，能够精确刻画多段多簇裂缝形态。在此基础上，将多段多簇裂缝模型与气藏基质属性模型相互结合，可进一步分析压裂改造后的压力波及范围及产量动态变化。在SM区块致密砂岩气田探索并推广地质工程一体化模拟技术，对气田高效开发提供了宝贵的思路。

With less and less recoverable reserves in conventional gas fields, more and more attention has been paid to difficult-to-deploy resources such as tight gas. In order to increase the degree of reserves exploitation of tight sandstone gas fields, refined models of various attributes of geological gas reservoirs were established according to geological structure characteristics and logging data, geological sweet spots and engineering sweet spots of target formations were evaluated, horizontal well cluster locations were optimized, and multi-stage and multi-cluster fracture morphology simulation and gas reservoir production numerical simulation were carried out. The results of horizontal well development were analyzed, and the measures to tap the potential capacity of the gas field were put forward, and the integrated simulation technology of geological engineering of tight sandstone gas reservoir was formed. The results show that the fracture model established by the finite element method can accurately describe the fracture morphology of multiple stages and clusters. On this basis, combining the multi-stage and multi-cluster fracture model with the reservoir matrix property model, the pressure sweep range and the dynamic change of production after fracturing can be further analyzed. Exploring and popularizing geoengineering integrated simulation technology in tight sandstone gas field in SM Block provides valuable ideas for efficient development of gas field.