Barrier Fluidless, Sealless Seawater Canned Motor Pumps

Stover, David L.; Travaini, Luca

doi:10.4043/29473-ms

Cited by 4 publications

(1 citation statement)

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“…The system could be replaced by two SPRINGS systems of 42000 BPD each [4]. The pumps used in the SWIP are designed to be in a 1 to 3 MW range [22]. In this study, each pump will be operating with a rotational speed between 1500 and 4440 rpm with a rated shaft power of 2170 kW [21].…”

Section: Case Studymentioning

confidence: 99%

Subsea Buoyancy and Gravity Energy Storage System for Deep-Water Applications: A Preliminary Assessment

Novgorodcev

Mols

Laguna

2022

Volume 8: Ocean Renewable Energy

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This article presents a preliminary assessment of a subsea buoyancy and gravity energy storage system (SBGESS). The storage device is designed to power an off-grid subsea water injection system to be installed at the Libra oil field in Brazil at 2000 m below sea level. Two 12MW floating wind turbines provide the energy supply. The system performance is evaluated according to historical wind data from reanalysis models, the water injection pumps’ power curves, the required daily water flow rate, and the maximum number of shutdowns allowed per year. A control strategy with three different operation modes and one energy-save sub-mode was implemented to optimise the size of the proposed energy storage system.

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Section: Case Studymentioning

confidence: 99%

Subsea Buoyancy and Gravity Energy Storage System for Deep-Water Applications: A Preliminary Assessment

Novgorodcev

Mols

Laguna

2022

Volume 8: Ocean Renewable Energy

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A New All Electric Subsea Control System Development

Monteverde

Novello

Kristiansen

2019

Day 3 Wed, May 08, 2019

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Over the past few years a specific programme has focused on the development of subsea separators and a subsea water treatment and injection process composed of several modules and requiring a certain amount of new subsea technology (subsea barrier fluid-less water injection pumps, filters, special water analyzers, etc.). One of these technologies is the all-electric subsea control system. The all-electric versus the electro-hydraulic solution was selected for its inherent capability to:enable long step-out distances;run logics such as sequences and fast closed control loops involving subsea proportional valves;handle high frequency of simultaneous valve actuations;implement safety functions, including SIL certified, when required. Within the ongoing industrialization programme of the new technologies, a Joint Development Agreement has been put in place between two partners for the qualification of the open framework platform for the control of subsea processes. The development is pursued according to the API 17N and DNV RP-A203 requirements. The subsea control system is developed according to the approach to interface standardization, which is aimed at guaranteeing:–the interchangeability of modules coming from different vendors;–the reduction of physical interfaces;–the optimization of IMR intervention time. The technology mainly consists of:a qualified basic component platform to be used for project-based assembly;a complete set of tools such as web-server, condition monitoring server, integrated software development environment, etc.;a standard and user-friendly approach for software application development, based on P&ID graphic, in order to facilitate the sharing of software information between contractor and clients;standard industrial communication protocols (no proprietary protocols) accessible to all users, which are designed for easy interfacing of the control system with third party equipment. The JDA activity has concluded the Q1 qualification tests of electronic components and Q2 tests of electronic assemblies, pursuant to API 17F, as well as all the other qualification activities (tests and analyses) relevant to the non-electronic components (e.g. 40kVA subsea electrical transformer), according to the relevant technology qualification plan. Additional software packages have also been developed and successfully tested using the Test Driven Development (TDD) method. The qualification will be completed by Q1 2019 with integration tests of:–Topside Control System;–Subsea Power and Communication Distribution Manager;–Subsea Control Unit. The integration tests will allow to reach TRL 4 of the above subsea equipment, in accordance with API 17N.

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Industrialisation of SPRINGS®, A Qualified Subsea Sea Water Desulfation Process

Giolo

Berthelot²,

Pedenaud³

et al. 2019

Day 1 Mon, May 06, 2019

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SPRINGS® (Subsea PRocessing and INjection Gear for Seawater) is a qualified process for subsea water treatment and injection. It uses membrane technology for water desulfation upstream of water injection wells to prevent sulfate scaling on the production side (nearwell bore, well and production equipment). It moves the water treatment from topside to subsea locations close to the injection wells with only power and communication tie-backs to existing topside facilities. Qualification of the process was achieved through both onshore and offshore trials. In advance of deploying the first industrial application, an industrialisation programme was undertaken in order to ensure that every component necessary for the subsea process implementation was available and had a sufficient technology readiness level to be safely installed and operated within the subsea plant. The existing and available technologies were reviewed vis-À-vis the requirements arising from both the process and the business strategy. Several industrial partners were engaged to determine the elements of novelty that needed to be brought to each technology or component to satisfy such requirements. The new technologies included: Subsea barrier-fluidless pumps Open framework all-electric control systems High-cycling electric actuators and valves Subsea water analyser Subsea storage and injection units for chemicals The design basis for the development of each technology, which in most cases included the realisation of a prototype and relevant qualification testing, was set up to consider a range of possible applications with differing environmental conditions, process data and/or IMR scenarios. The most challenging conditions were selected for each development to determine the relevant required performance. Where available, specific standards, such as API 17F (ref. [8]) for subsea electronics, were followed to determine the qualification plans. In those cases where no dedicated specific standard was available, the evaluation of the proposed solution was performed in conjunction with the technology provider through the risk based approach stated in API 17N (ref. [9]) and DNV A203 (ref. [10]). Failure Modes, Effects and Criticality Analyses (FMECAs) as well as technology readiness assessments were performed in order to develop the technology qualification plans. Most of the key equipment qualification plans will be completed by mid-2019, establishing an industrial platform for the deployment of the subsea water treatment and injection technology in a completely all-electric configuration, i.e. connected to the surface only through a communication and power cable. Such an industrial platform will also contain the building blocks for other subsea processes. The presentation and paper will introduce the elements of technological novelty and will describe the process, the challenges and the results of the relevant qualifications.

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Barrier Fluidless, Sealless Seawater Canned Motor Pumps

Cited by 4 publications

References 0 publications

Subsea Buoyancy and Gravity Energy Storage System for Deep-Water Applications: A Preliminary Assessment

Subsea Buoyancy and Gravity Energy Storage System for Deep-Water Applications: A Preliminary Assessment

A New All Electric Subsea Control System Development

Industrialisation of SPRINGS®, A Qualified Subsea Sea Water Desulfation Process

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