盐穴储气库造腔节能优化技术

Energy-saving optimization technology of salt cavern gas storage

为实现盐穴储气库建设降本增效,必须识别能耗关键点,针对注水造腔工艺过程进行优化,避免注水二次循环。在满足造腔量及外输卤水浓度的要求下,应用非线性规划理论结合水溶造腔生产实际,建立多井溶腔工艺参数优化数学模型,进行了多井溶腔工艺参数方案优化,提高注水溶盐效率。根据优化方案,改造现场注水工艺流程,保证一次循环多井采卤浓度满足外输要求,提高盐穴储气库建库效率。通过现场对工艺优化后,改造后工艺流程有效降低单位造腔体积能耗41.18%,对盐穴储气库建设具有重要意义。

In order to realize the cost reduction of salt cavern gas storage, it is necessary to i- dentify the key points of energy consumption, and to optimize the process of water injection cavity to avoid secondary circulation of water injection. Under the requirement of satisfying the amount of cavity and the concentration of brine, the mathematical model of optimization parameters of multi-well cavity was established by using non-linear programming theory combined with the actual production of water-soluble cavity. The process parameters of multi-well cavity were optimized to improve the efficiency of water injection. According to the optimization plan, the field water injection process is reformed to ensure that the concen- tration of multiple wells in a single cycle meet the requirements of external transmission and improve the efficiency of salt storage. Through the field to optimize the former process, after the transformation of the process to effectively reduce the unit cavity volume energy con- sumption of 41.18 %, the construction of salt caverns is of great significance.