Frontera Energy Corp. confirmed pay in the Wei-1 well on Corentyne block, about 200 km offshore Georgetown, Guyana.
The well was drilled by the NobleCorp Discoverer semi-submersible mobile drilling unit about 14 km northwest of the previous Kawa-1 discovery in about 1,912 feet of water to a total depth of 20,450 ft. The well targeted Maastrichtian, Campanian, and Santonian aged stacked sands within channel and fan complexes in the northern section of Corentyne block.
Data acquisition at the Wei-1 well included wireline logging, modular dynamics testing (MDT) fluid samples, and sidewall coring throughout the various intervals (OGJ Online June 28, 2023).
Based on the data acquisition program and additional information from an independent laboratory analysis process, Wei-1 test results confirm 13 feet of net pay in the Maastrichtian. Rock quality is high and consistent with that reported in Liza discovery on Stabroek block. Log analysis and fluid samples retrieved from the Maastrichtian confirm the presence of sweet medium crude oil with a gas-oil ratio (GOR) of about 400 scf/bbl.
In the Campanian, petrophysical analysis confirms 61 ft of net pay almost completely contained in one contiguous sand body with good porosity and moveable oil. Oil sampled during MDT, as well as samples analyzed downhole, confirm the presence of light crude oil.
In the Santonian, petrophysical analysis confirms 40 ft of net pay in blocky sands with indications of oil in core samples. Current interpretation of Santonian and Campanian horizons show lower permeability than the high-quality Maastrichtian. These horizons may offer additional upside potential in the future.
A total net pay of 342 ft has been discovered to date on Corentyne block.
Frontera is majority shareholder of CGX Energy Inc. and joint venture partner with CGX in the block.