“We are excited by the results of a production test of the Liza-2 well, which confirms the presence of high-quality oil from the same high-porosity sandstone reservoirs that we saw in the Liza-1 well completed in 2015,” said Steve Greenlee, president of Exxon Mobil Exploration Company.

“We, along with our co-venturers, look forward to continuing a strong partnership with the government of Guyana to further evaluate the commercial potential for this exciting prospect.”

The Liza wells are located in the Stabroek block approximately 120 miles (193 kilometers) offshore Guyana. Data from the Liza-2 well test is being assessed, the company said.

The Liza-2 well was drilled by ExxonMobil affiliate Esso Exploration and Production Guyana, approximately 2 miles (3.3 km) from the Liza-1 well drilled with Transocean’s Deepwater Champion drillship.

ExxonMobil said that the Liza-2 well encountered more than 190 feet (58 meters) of oil-bearing sandstone reservoirs in Upper Cretaceous formations. The well was drilled to 17,963 feet (5,475 meters) in 5,551 feet (1,692 meters) of water.

“This exploration success demonstrates the strength of our long-term investment approach, as well as our technology leadership in ultra, deepwater environments,” said Greenlee.

The Stabroek block is 6.6 million acres (26,800 square kilometers). Esso Exploration and Production Guyana Limited is operator and holds 45 percent interest in the Stabroek block.

Hess Guyana Exploration Ltd. holds 30 percent interest and CNOOC Nexen Petroleum Guyana Limited holds 25 percent interest.