Satellite fields development
The White Rose Expansion Project involves the development of three satellite fields: the North Amethyst, the West White Rose and the South White Rose.
Husky Energy, the operator, holds 68.875% in the satellite fields, while Suncor Energy holds 26.125% and the government of Newfoundland & Labrador, through Nalcor Energy, holds the remaining five percent interest.
The main White Rose field started production in November 2005 and, as of March 2014, produced 224 million barrels of oil (mbo). The development plan for all three satellite fields includes a subsea tie-back to the existing SeaRose FPSO.
A formal agreement for the development of the three fields was made in December 2007 and production from the North Amethyst field started in May 2010. The development plan amendment for the South White Rose Extension (SWRX) was approved in June 2013 and production from the project is expected in late 2014.
The final approval for the White Rose Extension Project (WREP), which involves the development of the West White Rose field, is expected to be granted in 2014 and first production is expected in late 2017.
The South White Rose field was delineated in 2003, and it is estimated to hold probable reserves of about 25mbo.
The North Amethyst and the West White Rose satellite fields were discovered in 2006 by delineation drilling. The West White Rose Field is estimated to hold 114.5mbo, while the North Amethyst field is estimated to hold probable reserves of 35.3mbo.
“The field has been developed from three or four drill centres on the seafloor, with production and water and gas injection wells located at each centre.”
The development of the WREP involves the installation of a wellhead platform (WHP) comprised of a concrete gravity structure (CGS) and topsides featuring drilling facilities, wellheads and support services including accommodation facilities for 144 people, utilities, a flare boom and a heli-deck. Production from the satellite field will be transferred to the SeaRose FPSO through subsea pipelines.
The WHP will be capable of accommodating 20 well slots, integrating the conductor sharing wellhead technology, which allows two wells to be drilled in each conductor, doubling the total number of wells to 40. The WHP will be designed to operate for 25 years. The CGS will be constructed at a new graving dock in Argentia.
SWRX project is being developed by constructing a new drill centre about four kilometres from the existing Southern Glory Hole at the main field. The drill centre will comprise of three production wells, two gas injection wells, and a water injection well, and will include further options to accommodate 12 more wells. It also involves the installation of 21km of flow lines and 14 subsea structures.
Wells will be connected to the existing South Drill Centre by subsea facilities. Drilling works for the SWRX are being performed using a semi-submersible mobile offshore drilling unit (MODU).
Cameron supplied 13 subsea wellheads and christmas trees, control systems, manifold components and flowline connection systems, as well as provided engineering and project management support for the North Amethyst field. The final assembly, painting, mechanical outfitting and insulation of the subsea structures for the North Amethyst field were performed by Cahill.
Technip provided more than 30km of flowline and umbilicals for the development of the North Amethyst field, and Jumbo Offshore assisted the company with the installation activities. Technip will also supply and install the gas injection flowlines, umbilicals and subsea structures to support oil production and water injection for the SWRX project.
Wood Group Mustang Canada in collaboration with Wood Group PSN performed the front-end engineering design (FEED) for the topsides of the WREP’s wellhead platform. The two companies will also provide detailed engineering and design for the topsides.
The pre-front end engineering design (pre-FEED), FEED and detailed engineering design for the CGS of the WHP is being performed by Arup. The drilling equipment for the WHP will be supplied by Archer.
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