The company is drilling the well to a depth of 4,250m to test the Eocene and Maastrichtian geologic zones.
CGX Energy president and CEO Steve Hermeston said the company is returning to drill the Eagle prospect that was halted in June 2000 due to overlapping maritime border claims between Guyana and Suriname.
The Eagle-1 well is being drilled by the Ocean Saratoga semi-submersible rig owned by a unit of Diamond Offshore Drilling.
CGX Energy is a Canada-based oil and natural gas company focused on the exploration of oil in the Guyana-Suriname basin.