浅水水下控制系统集约化设计

Intensive design of shallow water subsesa control systems

针对水下控制系统在渤海海域浅水区应用所面临的水深较浅空间受限、外部干扰因素多、可靠性差及经济效益低等问题,通过系统研究提出了一种集约化、高可靠性、可用性和可维护性的浅水水下控制系统的设计方法。以水下管汇为控制中心,采用1套水下控制模块(SCM)控制2棵水下采油树的1控2模式,简化了水下结构物的尺寸和数量,实现了集约化设计并降低了成本;开展了水下控制模块对接盘和通信组网设计,保障了1控2模式的可行性;基于SCM冗余技术,提出了水下电子模块(SEM)交叉冗余及光纤通信叠加电力载波的双网通信设计方案,开发了控制系统故障诊断和预警模块,提高了浅水控制系统的可靠性、可用性和可维护性。研究成果已在锦州31-1气田开发中成功投运,对中国海域浅水受限区油气田开发中水下控制系统的设计具有重要参考价值。

In response to the problems faced by subsea control systems in shallow water applications,such as limited space,external interference,poor reliability,and low economic efficiency,a design method for an intensive,high-reliability,availability and maintainable shallow water subsea control system was proposed through systematic research.With the subsea manifold as the control center,the design concept of controlling two Christmas trees with one set of subsea control module(SCM)was used to simplify the size and quantity of subsea structures,realizing intensive design and cost reduction.The feasibility of the one-control-two mode was ensured through the design of the docking plate of the subsea control module and the networking design of communication.Based on SCM redundancy technology,a design scheme for dual network communication of subsea electronic module(SEM)cross-redundancy,fiber-optic communication add with power line communication and a fault diagnosis and warning module for the control system was proposed,which improved the reliability,availability and maintainability of the subsea control system.The research results have been successfully applied in the development of the JZ31-1 gas field and have important reference value for the design of subsea control systems in restrict areas in the shallow water of China offshore.