Guyana's Ministry of Natural Resources has announced that ExxonMobil's Lancetfish-2 appraisal well in the Stabroek Block has resulted in a significant discovery. This marks the fourth offshore discovery in Guyana for the year 2023 and brings the total number of discoveries from 2015 to date to a total of 46. The earlier discoveries made in 2023 include Fangtooth SE-1 and Lancetfish 1 in the Stabroek Block, as well as the Wei-1 discovery in the Corentyne Block.

The Lancetfish-2 discovery in the Liza Petroleum Production License area has unveiled an estimated 20 meters of hydrocarbon-bearing reservoir, along with approximately 81 meters of additional hydrocarbon-bearing sandstone. This newly discovered reservoir will undergo a comprehensive appraisal process, which aligns with the ongoing appraisal activities for other discoveries in the region.

The Stabroek Block is 6.6 million acres (26,800 sq kms). ExxonMobil affiliate Esso Exploration and Production Guyana is operator and holds 45% interest. Hess Guyana Exploration holds 30% interest and CNOOC Petroleum Guyana holds 25% interest.