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Structural Integrity Management of J-Area Platforms-UK

NST were commissioned by one of worldwide major Oil and Gas operators to undertake the responsibility of structural integrity management of five off their offshore platforms in the U.K waters at the North Sea.

 

During this project, NTS managed to successfully deliver the following scope of work. 

 

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  • Developing standards and specification for asset integrity management as well as design and construction of brand new structures on behalf of the Company​

  • Establishing structural integrity plan (RBI) for three brand new platforms and execution of baseline inspection

  • Updating and executing RBI plans for the Judy and Jade platforms

  • Conducting several risk-based assessments for reported anomalies

  • AirGap Monitoring of the Judy platform haveing wave-in-deck issue 

  • Performing advanced pushover analysis demonstrating ultimate strength of the Judy platform

  • Several riser and caisson analyses

  • Management of design, construction, and installation of a repair subsea clamp

  • Management of repair of several topside line-pipes using advanced material

  • Preparing several work packs for complex repair and inspection 

  • Training and mentoring of engineering team of the Company

Jackdaw Tie-Back to JRP, Structural Feasibility Study- UK

NST performed a feasibility study into a potential tie-back between the Jackdaw field and Judy Riser platform.

 

The tie-back was a module located on the Upper Weather Deck of the JRP. The module would replace the GTM which were located there. 

 

As part of the feasibility project, NST, on behalf, the Company were commissioned to analyse the in-place structural model of the JRP for the proposed changes. The analysis was conducted to determine the maximum allowable weight of the Jackdaw module. It also analysed the sensitivity of the module’s CoG location, plan, and the number of setting down points. 

 

Members that would potentially require strengthening were determined.

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Structural Engineering of Clyde Platform

The Clyde platform is located approximately 175 miles south-east of Aberdeen; the eight-leg fixed steel jacket and module support frame has facilities for drilling, production, accommodation and associated utilities. Design work on Clyde started in 1982, with installation completed in 1986 and first oil production in 1987. Talisman-Sinopec UK currently operates this platform.

 

An additional 2655te module was installed at northern face of the platform as part of Flynder-Cowder project at 2016.

 

NTS was commissioned by Talisman-Sinopec UK to lead structural integrity engineering of Clyde platform for Flyndre-Cawdor project on behalf of the Company.

 

During this project, NTS managed to successfully deliver the following scope of work.

 

  • Project Management Consultancy (PMC)

  • Performing and advanced ship impact analysis demonstrating overall structural integrity of topside framing under ship impact loading conditions

  • Endorsement of design modifications proposed by contractors 

Picture from; http://www.oilrig-photos.com/

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