南中国海深水气田流动保障技术研究

Research on Flow Assurance in Deep Water Gas Field in the South China Sea

面对深水流动保障问题的挑战,针对南中国海深水气田项目,分析研究了深水气田流动保障开发中的一些关键技术。分别论述了深水流动保障特点;水下流动保障设计工作流程;如何操作初始投产分步启动,以符合上部平台段塞流捕集器接收系统的设计;开展了井低温启动模拟分析,利用瞬态仿真结果对水下设备的设计温度给出依据和指导;进行持液率敏感性分析及如何确定系统流动保障的最小输量;砂管理分析和砂沉积速度的详细计算,并给出深海气田流动保障的操作策略。利用多相流仿真软件OLGA展开动态模拟研究。对类似实际工程的设计和研究具有实际指导意义。

This paper discusses some problems on flow assurance in the South China Sea.Some key technologies on deep water flow assurance are analyzed.Minimum temperatures for system’s initial start-up and well’s start-up are analyzed.Sensitive analysis of liquid hold-up and minimum flow rate is confirmed.Sand production and deposition,minimum sand settling velocity is researched on.The flow is modeled with the dynamic multiphase flow simulator OLGA,and a SPS operation scenario flow chart is proposed.It has practical guiding significance to the design and research of similar practical projects.