Additionally, OGX has identified an oil-bearing interval in the Aptian section of well 1-OGX-5-RJS located in the BM-C-43 block and also situated in the shallow waters of the southern part of the Campos basin. OGX holds a 100% working interest in both blocks.
The well OGX-4 was drilled to a depth of 3,467 meters, resulting in the detection of hydrocarbons in sandstone reservoirs characterized by excellent levels of permo-porosity in the Eocene section. Based on the final well information combined with the 3D seismic data interpretation, OGX estimates recoverable oil volume of between 100 and 200 million barrels, the company said.
In well OGX-5, an oil column of 46 meters with around 20 meters of net pay was encountered in carbonate reservoirs of the Aptian section. The drilling of OGX-5 is in its final stage and is expected to reach a depth of approximately 4,300 meters. This is the second discovery in well OGX-5. The first one was made in carbonate reservoirs of the Albian section.
The OGX-5 well is located in the BM-C-43 block and is situated approximately 79 kilometers off the coast of the state of Rio de Janeiro at a water depth of approximately 150 meters. The rig Ocean Ambassador, provided by Diamond Offshore, initiated the drilling activities in December 2009.
Ocean Quest, a rig used at OGX-4, was mobilized to well 1-OGX-6-RJS in block BM-C-41. Drilling of the next well OGX-6, also located in the shallow waters of the southern part of the Campos basin, will commence and is expected to take approximately 60 days.
