Employing our network of global staff, we are providing pre-Front End Engineering Design (pre-FEED), FEED, and detailed engineering design (DED) services for a Concrete Gravity Sub-structure (CGS) Wellhead Platform (WHP) to enable extension of the existing White Rose oil field, situated approximately 350km offshore east-southeast of St. John’s, Newfoundland in the Jeanne d’Arc Basin.
The Wellhead platform comprises a 21,000 metric tonne (dry weight) drilling and accommodation topside supported on a CGS requiring about 72,000 cubic meters of prestressed reinforced concrete. The CGS will be constructed entirely in the dry at a new build graving dock in Argentia, Newfoundland.
As prime consultant for pre-FEED and FEED, we provided project management, design services, cost engineering, and construction planning for the construction and installation of the CGS, fabrication, transportation, and offshore floatover of the topsides at the field.
The FEED is completed with work mainly executed in St. John’s which brings substantial benefits to the Newfoundland province. We are now undertaking DED for the CGS from a dedicated project office in St. John’s with a team of over 70 engineers, designers, and planners.
21,000metric tonne (dry weight) drilling
72,000cubic meters of prestressed reinforced concrete
The dry build CGS solution provides a cost effective solution for fixed platform development on the Grand Banks, permitting year round drilling and subsequent work overs which will enhance oil recovery. The White Rose Extension Project (WREP) CGS will set a new benchmark for dry build CGS design in terms of water depth and associated environmental loading. In particular we have worked very closely with our client to establish a robust basis of design for iceberg loading which has further enhanced design performance and established a new basis for developing marginal oil fields on the Grand Banks.
The concrete gravity substructure solution is a core competence of Arup’s offshore engineering group. The solution delivers a high integrity yet economical substructure solution for marginal offshore developments for oil and gas and renewable energy developments.