Water Depth: 70 m / 231 ft
Production start-up: August 2019

The Butch prospect lies in Licenses PL 405 and 405BS in the Norwegian sector of the North Sea in a water depth of 230 ft (70 m). 

In October 2011, a net oil pay of about 164 ft (50 m) in the Upper Jurassic reservoir of the Ula formation was encountered. The Cassidy prospect sits within the PL405 Oda licence and is being drilled back-to-back with the production wells on the Oda structure. The well will target the prospect in the same Jurassic Ula Formation as seen in the Oda Field.

The Oda development concept is a tie-in to the Ula field and the discovery is estimated to contain 43 million boe gross. 

Operators:

Spirit Energy Norge AS: Operator with 40% interest

Suncor Energy: 30% interest 

Aker BP: 15% interest

Faroe Petroleum: 15% interest


Contractor:

Maersk Drilling: Drilling using the Maersk Giant and Mærsk Interceptor rigs

Aibel: Contract to deliver design, engineering and fabrication services

Subsea 7: Contract to provide pipelines, umbilicals and subsea service. Engineering, procurement, construction, installation and commissioning (EPCIC) of subsea umbilicals, risers and flowlines (SURF) including the production pipeline, water injection line, umbilical and related subsea services.

DNV GL: Contract to verify the work executed by Aibel and Subsea 7