The deepwater exploration licence No. 2/93 covering four blocks in the Slyne Trough was granted on 1 January 1993 for a period of 11 years to Enterprise Oil and its partners Saga Petroleum Ireland Limited, Statoil Exploration (Ireland) Limited, and Marathon International Petroleum Hibernia Limited.
In 2002, Enterprise Oil was acquired by Royal Dutch Shell who took over the operatorship of the project.