ExxonMobil made its eighth oil discovery offshore Guyana at the Longtail-1 well in the Stabroek Block on June 20. The company encountered 256 feet of oil-bearing sandstone. The well was drilled to 18,057 feet depth in 6,365 feet of water.
Exxon Mobil said that it has discovered additional oil in the Payara reservoir offshore Guyana, increasing the total discovery to approximately 500 million barrels oil equivalent. The result increases the estimated recoverable resources in Guyana’s Stabroek Block formation to about 2.25 to 2.75 billion barrels. By way of comparison, the much-heralded Thunder Horse find in the Gulf of Mexico has reserves of about one billion barrels.
ExxonMobil and its partner Hess Corp. have announced that the major discovery off the coast of Guyana, in the north of South America and bordering with Venezuela, is a discovery that is much larger than previously expected.