Petrobras has announced that they have concluded the drilling of well 3-BRSA-1305A-RJS (3-RJS-739A), located in the northwestern area of the Libra block, in the Santos Basin pre-salt cluster, and confirmed the discovery of oil of good quality in reservoirs of excellent productivity.
The well found an oil column measuring approximately 270 meters and high quality reservoirs in communication with other wells that had already been drilled in the area. Two formation tests, carried out in two separate intervals, confirmed these reservoirs’ excellent productivity and the good quality of the oil (28º API), similar to what was found in wells 2-ANP-2A-RJS and 3-RJS-731.
Petrobras is currently currently drilling two other wells in the northwest area of the Libra block: 3-BRSA-1322-RJS (3-RJS-741) and 3-BRSA-1339-RJS (3-RJS-742). At the former, the oil carrier range was found through cable profiles – record of hydrocarbon formations traversed by the well – and fluid samples, which will be characterized by laboratory analyses. The well is currently at a depth of 5527 meters. The latter, 3-RJS-742, meanwhile, started being drilled on February 6.
These three wells are part of the activities of the Discovery Assessment Plan (DAP) for well 2-ANP-2A-RJS submitted to the National Petroleum Agency (ANP) on September 15, 2015, and currently in the approval process. The Libra Consortium is formed by Petrobras (operator, 40%), Shell (20%), Total (20%), CNPC (10%), and CNOOC (10%), with contract management by Pré-Sal Petróleo S.A. (PPSA).
In the same cluster, the Sépia Anticipated Production System has been started, previously the Northeastern area of Tupi. The operation got underway with vessel platform FPSO Cidade de São Vicente, the output of which will be about 20,000 barrels of oil per day during the test period. Installed in waters where depth is approximately 2,200 meters, the platform was connected to the 1-RJS-691 well and will remain in place for a period of 180 days. This is the fourth Early Production System in the Transfer of Rights area of the Santos Basin. The oil produced, of good quality (26 API), will be transported by shuttle tankers.
Among other data, the Sépia Anticipated Production System aims to collect technical information about reservoir behavior and oil flow in subsea lines. This information will support the development of the final production system, expected to come into operation in the area in 2020.
Located at about 185 kilometers from the coast of Rio de Janeiro, the Sépia field had its commerciality declaration announced by Petrobras in September 2014.