A group led by Petroleo Brasileiro SA has proved an extension of the 2008 Jupiter presalt oil and gas-condensate discovery in the deepwater Santos basin offshore Brazil, from which production is expected to begin in 2019.
The 3-BRSA-1183-JRS (3-RJS-713) extension well, 26 km northeast of the discovery well on the BM-S-24 block, proved a 160-m gross hydrocarbon column topped at 5,322 m in rocks with good porosity and permeability.
The well identified a 100-m gross oil column with a gas cap and condensate. The gas contains an undisclosed percentage of carbon dioxide.
Analysis of samples from the extension well, known informally as Bracuhy, indicated the fluids to be the same as those encountered in the 1-RJS-652A Jupiter discovery well (OGJ Online, Jan. 29, 2008).
The extension well went to 5,765 m in 2,251 m of water 267 km south of Rio de Janeiro. The well is the third drilled in the Jupiter area.
A formation test is scheduled for 2014 in the oil-bearing zone in order to assess the characteristics and productivity of the reservoirs.
The group will proceed under the evaluation plan approved by Brazil’s National Petroleum, Natural Gas and Biofuels Agency that calls for the drilling of an appraisal well and one formation test in 2014.
BM-S-24 block interests are Petrobras 80% and Galp Energia through its Petrogal Brasil subsidiary 20%.
Galp Energia noted that it also holds stakes in Santos presalt blocks BM-S-11 (10%), BM-S-8 (14%), and BM-S-21 (20%). It said the blocks hold “high exploratory potential.”