INTECSEA - Latest technology initiatives

Latest technology initiatives

Decommissioning In Design Joint Industry project
INTECSEA is organizing a Joint Industry Project to collate industry experience related to decommissioning and define key issues that should be considered during the design of a new installation. Currently, decommissioning platforms and subsea developments are costing operators and government millions of dollars. Significant savings can be gained during the design phase by forward planning for decommissioning. This project proposes to organize decommissioning issues and establish a standard approach for incorporating decommissioning into the design and execution phase. See the full proposal here

Strain Based Engineering Critical Assessment (ECA) Round Robin – Technology Qualification
Engineering Critical Assessment (ECA) for pipeline girth weld is performed to assess the criticality of flaws or defects found at the girth welds during inspection. Conventionally, the assessment is carried out based on the Failure Assessment Diagram (FAD) approach using guidelines in standards or recommended practice such as BS7910, API 579, SINTAP and FITNET. Amongst them, the most widely accepted procedure, in the pipeline industry, is based on BS7910 [Ref. 1]. However, this procedure is essentially stress-based and will result in unnecessary conservatism when applied in its unaltered form to modern pipelines requiring plastic design with large strains. The uncertainties, in terms of robustness of the approach, are greater when the large strains are applied in combination with other factors such as multi-material domains (from clad/lined pipe) and non-overmatching weld.

The alternative, Strain-Based ECA (SBECA), has been proposed and developed recently within the industry. Nevertheless, there is lack of a unified approach presented in any design standard. In the absence of a clear codified guidance, installation contractors and design houses have executed a number of SBECA studies in various approaches limiting the confidence level on SBECA.

INTECSEA is pleased to announce a collaborative round-robin exercise focused as an initial step towards the development of a unified methodology and framework for performing SBECA within the industry. Learn more

Mercury Removal From Rich MEG
Current Challenge
Both Hg speciation and partitioning in the MRU is of interest to industry to ensure accurate prediction of Hg passage into MRU streams. Unfortunately Hg speciation/distribution in the MRU system has not been studied to any great extent. However, this information is needed to establish Rich MEG Hg removal efficiency as well as identify where to put Hg removal equipment on individual MRU rundown streams if Hg removal from Rich MEG is not a viable option.

Currently the chemistry and effectiveness of Hg removal from Rich MEG has not been studied, or is not available in the public domain. The presence of Fe2+ from pipeline corrosion, as well as Ca2+ and Mg2+ from Formation Water breakthrough and/or wellhead startup, are potential divalent ion candidates, that often require their own removal processes, and could compete with Hg in the Hg removal process. Since little is known about these interactions further study is required.

INTECSEA and leading Technical Advisors from Operators have identified a challenge currently facing our industry in the area of MEG Regeneration/Reclaiming operations. The immediate objective is to garner feedback from selected organisations to establish viability for research into an area where little knowledge exists.

By identifying current knowledge, and determining the information gaps that need to be addressed, the appropriate course of action will be defined. If sufficient commitment is provided, INTECSEA will prepare a detailed proposal for
review and discussion with JIP participants that outlines literature survey, simulation, and bench/pilot testing objectives to support design guidance objectives. JIP feedback on objectives and approach will be integrated into the approved program. Learn more

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