Brazil’s state-owned oil company Petrobras has concluded the drilling of the well 3-BRSA-1305A-RJS (3-RJS-739A), located in the Libra block northwest area, in the pre-salt of the Santos Basin off Brazil, confirming the discovery of good quality oil in reservoirs with excellent productivity.
According to Petrobras, the well found an oil column of around 270 meters and high-quality reservoirs in communication with previous wells in this area.
Two Drill Stem Tests (DSTs), performed on two different intervals, have confirmed the excellent productivity of these reservoirs and good oil quality (28º API), similar to the wells 2-ANP-2A-RJS and 3-RJS-731, the company said.
Currently, two other wells are being drilled in the Libra block northwest area: 3-BRSA-1322- RJS (3-RJS-741) and 3-BRSA-1339-RJS (3-RJS-742). In the well 3-RJS-741, the oil-bearing zone was identified by wireline logging and fluid samples, which will be characterized by laboratory analysis. The well is being drilled at a depth of 5,527 meters. The well 3-RJS-742 started to be drilled on the latest February 6th.
These three wells are part of the Discovery Evaluation Plan activities of the well 2-ANP-2ARJS, submitted to the National Oil, Natural Gas and Biofuels Agency (ANP), on September 15, 2015, and currently under approval process.
The Libra Consortium is composed of Petrobras (operator, with 40% WI), Shell (20%), Total (20%), CNPC (10%) and CNOOC (10%), and the contract manager is Pré-Sal Petróleo S.A. (PPSA).