Subsea production systems and processes are generally conducted using hydraulic and more recently electro-hydraulic controls. These systems have become complex and expensive to deploy, especially with increasing length of tie-backs, more deepwater installations and challenging environments. Electrically powered and controlled equipment has become the standard for onshore and topsides equipment. Developing a subsea electric control unit that is modular and easily packaged is integral to leveraging the benefits of electric monitoring and control into subsea production systems and processes, as well as many other intervention applications such as subsea chemical storage and injection. In addition to simplifying and reducing costs of these systems, the unit will be able to discern an end component's health and status providing an opportunity to adjust or modify the operation in-situ. and in some instances real-time as well as provide other benefits. New analytical techniques powered by advanced analytics and artificial intelligence (AI) are being developed to examine in greater detail the controlled equipment's operational status, infer its current state of health and even predict future performance and maintenance/repair needs. As more and more data are collected and analyzed, the predictability and accuracy of the analysis and prediction improves. Coupling the newly developed all electric subsea controller unit described in this paper with advanced data analytics will lower operator costs and risks in subsea systems, the system presented herein has been designed as a simple, rugged and reliable piece of equipment based on years of experience with API RP 17H Class 2 torque equipment and variable speed subsea pumps. It utilizes serial communications with position limiting and has a closed loop speed/position control, torque control, and real-time torque limiting. The profiling feature helps establish valve and pump status, functionality and health monitoring. The tool is ideally suited for subsea application to 10,000 fsw for any application requiring up to 250 ft.-lbs. with position and variable speed control. Leveraging learnings from the nuclear industry and their regulators, this 'spring-less' unit includes an option for a 'smart battery' (Lithium ion) back-up for specified failsafe positioning and monitoring. Technical specifications were driven by operator customers. A full set of Functional Design Specs (FDS) were developed as well as an Inspection and Test Quality Plan (ITP). Where practical, acceptance criteria were leveraged from API, ASME and other industry guidance. A full-scale prototype unit has been built, tested and qualified with over 1 million cycles. The unit enables collecting sensed operating data from one or more end devices and one or more control end points, calculating and performing analytics, and reporting health and status of the one or more end devices and one or more control end points. It is currently being utilized on a common industry subsea ball valve, integrated into a subsea chemical storage and injection system as well as a drive for a variable speed subsea chemical injection pump. Regulator authorities in the U.S. have been included in the qualification witnessing.
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机译：水下生产系统和工艺通常使用液压控制以及最近的电动液压控制来进行。这些系统已经变得复杂且部署昂贵，尤其是随着回结长度的增加，深水设施的增加以及环境的挑战性。电动和受控设备已成为陆上和上层设备的标准。开发模块化的，易于包装的海底电气控制单元，是将电气监视和控制的优势利用到海底生产系统和过程以及海底化学品存储和注入等许多其他干预应用中所不可或缺的。除了简化和降低这些系统的成本外，该部门还将能够识别终端组件的健康状况，从而有机会就地调整或修改操作。并且在某些情况下是实时的，还可以提供其他好处。正在开发由高级分析和人工智能（AI）支持的新分析技术，以更详细地检查受控设备的运行状态，推断其当前的健康状态，甚至预测未来的性能和维护/维修需求。随着越来越多的数据被收集和分析，分析和预测的可预测性和准确性提高。本文所述的新开发的全海底电动控制器与先进的数据分析相结合，将降低操作员的成本和海底系统的风险，基于多年的经验，本文介绍的系统已被设计为一种简单，坚固且可靠的设备API RP 17H 2类扭矩设备和变速海底泵。它利用带有位置限制的串行通讯，并具有闭环速度/位置控制，转矩控制和实时转矩限制。概要分析功能有助于确定阀和泵的状态，功能以及运行状况监视。该工具非常适合10,000 fsw的海底应用，适用于需要高达250 ft.-lbs的任何应用。带位置和变速控制。借助核工业及其监管机构的经验教训，该“无弹簧”装置包括一个“智能电池”（锂离子）备份选件，用于指定的故障安全定位和监视。技术规格是由运营商客户驱动的。制定了完整的功能设计规范（FDS）以及检验和测试质量计划（ITP）。在可行的情况下，可以通过API，ASME和其他行业指南来利用验收标准。一个完整的原型单元已经建造，测试并通过了超过一百万次循环的鉴定。该单元使得能够从一个或多个终端设备和一个或多个控制端点收集感测到的操作数据，计算和执行分析，以及报告一个或多个终端设备和一个或多个控制端点的健康和状态。目前，它已在通用的工业海底球阀上使用，已集成到海底化学物质存储和注入系统以及变速海底化学物质注入泵的驱动器中。美国的监管机构已包括在资格见证中。
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