海上储气库先导试验地面工程建设实践与认识

Practice and understanding of ground engineering construction for pilot testing of offshore gas storage

N储气库是国内第一座海上储气库和第一座油藏改建储气库,先导试验阶段以经济效益为中心,优化方案和布局,充分利用油田已建设施,发挥已建系统潜力,通过加强设计管理、采购管理、施工管理、检测管理和HSE管理,成功达到了试验目的。在建设和运行实践中面对老旧系统评价治理、海上交通不便、压缩机采购周期长、生产运行不适应性等诸多难题,探索了利旧和租赁压缩机、合理协调海运、生产参数调整等管理办法,创新采用了浸泡清洗+钢丝球不卡堵清管、小管容短距离串联增注、气举排液快速建库等技术,在解决问题过程中积累了较丰富的经验做法,可为同类型储气库建设提供借鉴。

The N gas storage is the first offshore gas storage and the first gas storage converted from an oil reservoir in China.In the pilot testing phase,the optimization plan and layout centered around the economic benefits,with the existing facilities in the oilfield fully utilized and the potential of the existing system fully unleashed.The testing objectives were successfully achieved by strengthening design management,procurement management,construction management,testing management,and HSE management.In the construction and operation practice,concerning plenty of difficulties such as the evaluation and governance of old systems,inconvenient maritime transportation,long procurement cycle of compressors,and unsuitable production and operation,management methods were explored accordingly,such as recycling and leasing compressors,reasonable coordination of sea transportation,and adjustment of production parameters.Moreover,technologies were innovated,such as clog-free pipeline cleaning technology combining immersion with the use of steel ball,injection-augmenting technology achieved by short-distance series pipelines with a small capacity,and rapid construction of warehouses technology achieved by gas lift and liquid discharge.In the problem-solving process,considerable experience and practices have been accumulated,providing a reference for the construction of similar gas storages.