Project Profile
Location: Offshore Angola
Water Depth: 1,350m
Discovery date: January 1998
Start-up year: June 2007
The Rosa field lies in block 17, 135km off the coast of Angola in water depths of 1,350m. It was discovered in January 1998 and came onstream in June 2007. The field is operated by Total E&P Angola with 40% interest, with Sonangol being the block 17 concessionaire.
Other partners are Esso Exploration Angola (block 17) Limited (20%), BP Exploration (Angola) Ltd. (16.67%), Statoil Angola Block 17 AS (13.33%) and Norsk Hydro Dezassete (10%). Rosa, with proven and probable reserves amounting 370 million barrels will maintain the FPSO\'s production plateau at 250,000 barrels per day (bpd) until early in the next decade.
Block 17 is composed of four major zones: Girassol and Dalia, both in production; Pazflor is in the bidding process before sanction and CLOV, a fourth major production area based on the Cravo, Lirio, Violeta and Orquidea discoveries, whose development is currently being studied. Future production from these fields will come in addition to the 500,000bpd that are currently pumped from Girassol and Dalia structures on the block 17.
The main work for the Subsea Production System (SPS) was awarded to FMC in a EPC (Engineering, Procurement and Construction) contract. The scope of work included 13 production trees rated to 5,000psi and ten injection trees. FMC subcontracted Roxar for the multiphase flow meter on each well to monitor the flowrates.
The christmas trees and wellhead guide bases were installed using the drilling rig as the wells were being drilled, while the manifolds were installed by Saipem using its Saipem FDS DP monohull crane and pipelay vessel.
Operators:
Total E&P: Operator with 40% interest
Esso Exploration Angola: 20% interest
BP Exploration: 16.67% interest
Statoil: 13.33% interest
Norsk Hydro Dezassete: 10% interest
Contractors:
CGGVeritas: Seismic survey
FMC: EPC contract
Saipem: Install manifolds
Subcontractors:
Roxar: Monitor the flowrates for FMC