Woodside Petroleum Ltd., Perth, operator for Sangomar oil field (formerly the SNE field) 100 km offshore Senegal, has submitted its development and exploitation (D&E) plan to the Government of Senegal.
The SNE field was renamed Sangomar several months ago by the country’s president Macky Sall to better reflect its association with the people of Senegal. Sangomar is the name of an island at the southern point of Petite Cote which runs south from the capital Dakar.
Woodside said that the D&E plan, along with an exploitation request, are the final major regulatory submissions required before final investment decisions can be made by each of the joint venture participants. FID is targeted to occur during December subject to the grant of exploitation authorization and relevant JV approvals.
Woodside Chief executive Officer Peter Coleman said the submission is the culmination of front-end engineering and design activities.
Sangomar will be Senegal’s first oil project.
The first phase of development calls for a stand-alone floating production, storage, and offtake (FPSO) facility located on the eastern edge of the field in 800 m of water and fed by subsea infrastructure.
The subsea system will include 23 subsea wells—comprising 11 producers, 10 water injectors and 2 gas injectors—supported by up to 22 km of in-line tees, six manifolds, up to 150 km of flow-lines and risers, up to 50 km of flow-line end terminals, and up to 70 km of umbilicals.
The field has an estimated recoverable reserve of 2.7 billion bbl of 32 degree API gravity oil contained in Cretaceous-age sand reservoirs. Phase 1 will target an estimated 230 million bbl of oil.
The FPSO will be designed to enable the integration of subsequent development phases, including gas export to shore and future subsea tie-backs from other nearby reservoirs and fields.
The FPSO has a planned production capacity of about 100,000 b/d and a storage capacity of 1.5 million bbl of oil. First oil is scheduled for early 2023.
Sangomar was discovered in November 2014. Between 2015 and 2017 there were 10 successful exploration and appraisal wells in the block.
The current shareholding is Cairn Energy PLC with 40%, Woodside 35% and operatorship of the development phase, FAR Ltd. 15%, and Senegal national company Petrosen 10%. Petrosen also has the right to increase its equity to 18% on development.
