Combining the Most Efficient Active Heating Technology with Subsea Electrical Distribution to Develop Remote Resources

Verdeil, Julien; Giraudbit, Sonia; Silcock, Donald; Cherkaoui, Saad

doi:10.4043/27722-ms

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…There is no heat attenuation during the heat preservation process for long-distance pipelines, as occurs with circulating hydrothermal heating, and electrochemical corrosion caused by current flowing through the pipeline is avoided. Electrical heat tracing can be applied to any target sea area and provide protection for pipeline flow by changing the layout density and heating power of the heating cable (Verdeil et al, 2017). Electromagnetic induction heating is equivalent to combining direct electric heating technology and electrical heat tracing.…”

Section: Introductionmentioning

confidence: 99%

Thermal system for a new flexible composite tank

Liu

Li²,

Zhu³

2022

Front. Mater.

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A flexible thermal insulation system is proposed in this study, which considers the application and promotion of flexible composite materials in the field of marine engineering. This system is designed to provide a cost-effective and convenient thermal insulation solution for avoiding impurity precipitation and formation of wax plugs caused by extremely low temperature during mining, transportation, and storage of oil. The thermal insulation system includes two main parts: the insulation layer and the heating source. In accordance with the laws of thermodynamics and the primary characteristics of the flexible structure, two different insulation systems were designed and model tests were performed to compare performance in heating efficiency, thermal insulation, and temperature field distribution under identical environmental conditions. Compared with the plan 1 thermal insulation system, the plan 2 system has lower requirements for heating power, more uniform temperature field distribution inside the flexible structure, and a difference of only 7.18°C between the highest and lowest temperatures.

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Section: Introductionmentioning

confidence: 99%

Thermal system for a new flexible composite tank

Liu

Li²,

Zhu³

2022

Front. Mater.

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Innovative Subsea Electrical Field Architecture and Technology Solutions for Longer Tiebacks and Offshore Energy Management

Manach

Verdeil

Bouzard

et al. 2022

Day 4 Thu, May 05, 2022

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The paper discusses integrated all-electric solutions (iAES) that offer significant optimisation of field architecture and enhanced viability of both greenfield and brownfield developments. The discussion will be on field optimisations related to power and subsea chemical distribution to fully enhance the subsea electric field of the future. Conventional subsea field developments rely on electrohydraulic architectures to distribute chemicals, power, control, and communications from the host to the drill centres. The multiplication of tiebacks and their distance to a single host, as well as the increasing depths of subsea development, provide opportunities for a change in the technologies used subsea today, to improve the overall project economics. Yet the pace of change in technologies and field architectures remains slow. Over the last two decades, major improvements have been made in the development and qualification of subsea electrical equipment. The track record of the equipment installed on the seabed is now significant, although all-electric architecture has not become the new standard yet. The main advantages of an iAES lie in the simplification of subsea architecture and the reduction in the number of components. This lighter design allows a reduction of capital expenditures (CAPEX) and operational expenditures (OPEX), as well as shorter project delivery times and installation campaigns. The energy efficiency is also greatly improved, leading to a reduction in greenhouse gas emissions. The iAES is an enabler toward the energy transition, facilitating the integration of renewable sources into power subsea equipment. This paper will introduce the iAES and show how it offers significantly optimised field architecture and enhances viability of both greenfield and brownfield projects. It will provide the all-electric technology building blocks for subsea structures and will also explain how to optimise power in the field and in subsea chemical distribution to fully enhance the subsea electric field of the future. And it will include an outline of integrated control concepts for subsea production systems, boosting systems, and the subsea chemical storage and injection skids.

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Flowline Sustainable Operations through Monitoring and Digitalisation – Ærfugl Project Case Study

Hendawy

Boohene

Labib

et al. 2023

Day 4 Thu, May 04, 2023

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Unlocking the value of product data for the subsea industry is essential to improving efficiency and sustainability from early engagement to fabrication, installation and throughout the product life cycle. Unlike standard flowlines managed with temperature sensors on trees which provide limited information to the operator, Ærfugl Project implemented distributed flowline temperature monitoring, to allow effective mitigation against hydrate formation utilising active heating technology. The case study was a collaborative effort between the project's subsea umbilical, riser and flowline (SURF) Contractor (hereafter referred to as the COMPANY) and its subsidiaries, with support from the owner and operator of the Ærfugl development (hereafter referred to as the CLIENT). A pre-existing Alliance between the two companies worked to turn live project data into operationally valuable insights. The case study capitalised on monitored temperature data from the COMPANY's first functional 20km electrically heat-traced flowline (hereafter referred to as the PRODUCT). The PRODUCT is a subsea pipe-in-pipe system with electrical heating wires and fibre optics laid in the annulus. The fibres provide a temperature reading every metre along the flowline length via distributed temperature sensing (DTS). The DTS topside interrogator collects, processes and stores the data offshore, simultaneously visualising it for the offshore operator. The case study successfully extended offshore data acquisition to the cloud, further processing the data onshore to produce valuable outputs visualised on cloud-based dashboards. In collaboration with the operator, offshore data acquisition was successfully performed using Open Platform Communication Direct Access protocol, all the while maintaining the required cyber security. The data was then processed and correlated to the flowline design parameters to monitor and create temperature visuals, report thermal insulation efficiency, hence, aiding flow assurance and operations. Data is processed and visualised on dashboards within the COMPANY's bespoke digital delivery interface (hereafter referred to as the DATA INTERFACE) – a cloud-based platform where all stakeholders have a common integrated interface – showing status, profiles, trends, warnings, alarms, and operator recommendations where applicable. The benefits and value of this solution include the reduced risk for production downtime and loss of integrity through proactive asset monitoring and management, effective decision-making by operators for operations, inspection, repair & maintenance activities, and improved vessel utilisation (thus reducing associated carbon emissions). More broadly, value is created by reducing unplanned production downtime, limiting (mono-ethylene glycol) MEG injection and flaring, validating and expanding operational envelopes by reducing design envelope conservatism, and allowing Subject Matter Expert-assessed, automated reporting. Furthermore, production and integrity envelopes through the product life cycle can be inherently validated, providing invaluable feedback and insight. Geared with such knowledge, conservatism in design may be reduced, system usage is improved and adjusted as the system ages and project delivery is enhanced. This paper highlights the value of useful data creation and processing resulting from constant monitoring of smart flowlines, allowing for improved product operation and development, building towards an actionable digital twin. Relying on a collaborative approach, a comprehensive field data management strategy highlights a critical tool and a repeatable/scalable process to provide value, supporting sustainability and efficient asset lifecycle management.

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Combining the Most Efficient Active Heating Technology with Subsea Electrical Distribution to Develop Remote Resources

Cited by 3 publications

References 6 publications

Thermal system for a new flexible composite tank

Thermal system for a new flexible composite tank

Innovative Subsea Electrical Field Architecture and Technology Solutions for Longer Tiebacks and Offshore Energy Management

Flowline Sustainable Operations through Monitoring and Digitalisation – Ærfugl Project Case Study

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