OGX Petroleo e Gas Participacoes SA, Rio de Janeiro, gauged gas-condensate on a drillstem test in the Santonian section of the 1-OGX-11D-SPS well on the BM-S-59 block on the Santos basin shelf off Brazil.
The well, in 180 m of water 84 km off Rio de Janeiro, in June encountered a 180-m column with 75 m of net pay in the Santonian section of what OGX calls the Natal accumulation. The late September drillstem test flowed gas and 47° gravity condensate that OGX said “should be responsible for more than 20% of the hydrocarbon volume of this structure.
The company said the test results indicate a production potential of 1 MMcmd and 1,200 b/d in a vertical well or as much as 5 MMcmd and 6,000 b/d in a horizontal well.
Alan Petzet is Chief Editor-Exploration of Oil & Gas Journal in Houston. He is editor of the Weekly E&D Newsletter, emailed to OGJ subscribers, and a regular contributor to the OGJ Online subscriber website.
Petzet joined OGJ in 1981 after 13 years in the Tulsa World business-oil department. He was named OGJ Exploration Editor in 1990. A native of Tulsa, he has a BA in journalism from the University of Tulsa.
