The study is focused on tight sandstone gas reservoirs with poor physical properties. The Sulige gas field is considered as an example gas reservoir: As the number of low-productivity and low-efficiency wells increases every year, the intermittent production scheme provides a way to maintain the stable production of those wells. However, the existing differences in the classification of intermittent wells and the production pattern are not conducive to the standardized management of gas wells. Therefore, according to the geological characteristics of intermittent wells, as well as the production performance, the intermittent wells were classified into three types: natural decline type (ND), poor reservoir physical property type (PRPP), and liquid loading type (LL). Furthermore, the charts of optimal shut-in time for different types of intermittent wells were established by analyzing the relationships between the shut-in time, the pressure recovery degree, and the gas productivity growth rate. Finally, according to the optimal shut-in time chart, the research results reveal the reasonable and optimal shut-in time in a well, providing the way to the production pattern optimization of the intermittent wells in the Sulige gas field.

该研究的重点是物理性能较差的致密砂岩气藏。苏里格气田被认为是一个示例性的气藏：随着低生产率和低效率井的数量逐年增加，间歇性生产计划为维持这些井的稳定生产提供了一种途径。但是，间歇井的分类和生产方式存在差异，不利于气井的规范管理。因此，根据间歇井的地质特征和生产性能，将间歇井分为自然下降型（ND），储层物性较差（PRPP）和液体加载型（LL）三种类型。 。此外，通过分析关井时间，压力恢复程度和天然气生产率增长率之间的关系，建立了不同类型间歇井的最佳关井时间图。最后，根据最优关井时间图，研究结果揭示了井中合理，最优的关井时间，为苏里格气田间歇井的生产模式优化提供了途径。