expro excellence subsea… · • expro’s long-standing relationship and track record using...
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SubseaExpro Exce l lence exprogroup.com
ContactFor further information, please contact:[email protected]/subsea
Objectives/background
• To deliver a suitable landing string for BP’s Quad 204 development in the North Sea
• This was a technically challenging scope of work due to the rig BOPconfiguration/orientation as well as the unique completion/installation methods and bespoke SPS interface – this was to suit BP’s rig of convenience which was a new semi-submersible that had been optimised for drilling operations and harsh environments
• A dual bore vertical xmas tree (VXT) solution was selected by BP
Expro Excellence
• Expro’s long-standing relationship and trackrecord using similar technology, allowed theSubsea team to use previous experienceand lessons learnt to ensure completecompliance with the customer’s expectationsfor the project
• Engineering work was undertaken to providea landing string that fitted the BOP withoutcompromising our customer’s specificproject requirements, nor reducing thelanding string functionality
• Re-engineering work resulted in the creationof a combined Integral Slick Joint (ISJ) andTubing Hanger Running Tool Adapter(THRTA), reducing the overall landing stringassembly length so to accommodate the rigBOP dimensions and configuration
• Production and annulus accessrequirements, along with full helix orientationand BOP and SPS interface challengeshighlighted the unique features within Expro’sbespoke landing string
• Engineering analysis for FMECAs, stressanalysis and multiple GRAs to account forvarious scenarios were undertaken
Value to client
• Expro’s modular/flexible subsea systemallowed use of a rig of convenience
• Cost-efficiencies due to a reduction inequipment complexity:
– Monobore landing String
– Integral Slick Joint
• No requirement for dual bore riser due toExpro’s technical solution, single completionstring deployment, full well control inclusivewithin THOJ/orientation helix arrangement
• Accelerated timeline achieved within ninemonths, in line with rig delivery
/ Expro Excellence
Expro provides bespoke subsea system forBP’s Quad 204 development, increasingfeatures despite decreasing size
Subsea
Expro added value with a dual bore VXT configuration that allowed:
• Orientation helix for BOP alignment included in the system (full well control anddisconnect features were not compromised)
• Deployment with monobore tubing, eliminating the need for dual bore riser• Primary barriers allowing well flow clean-ups prior to the installation of the dual borexmas tree
• Provision of dual bore access for manipulation of the annulus and mechanical accessfor intervention
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