(Rigzone,Monday, September 16, 2019) -- Exxon Mobil Corp. reported Monday that it has made another oil discovery on the Stabroek Block offshore Guyana at the Tripletail-1 well in the Turbot area, adding to Stabroek’s previously announced estimated recoverable resource exceeding 6 billion oil-equivalent barrels.

“This discovery helps to further inform the development of the Turbot area,” Mike Cousins, ExxonMobil’s senior vice president of exploration and new ventures, said in a written statement emailed to Rigzone.

According to ExxonMobil, Tripletail-1 – drilled in 6,572 feet (2,003 meters) of water by the Noble Tom Madden drillship – encountered approximately 108 feet (33 meters) of a high-quality oil-bearing sandstone reservoir. After the drillship completes operations at Tripletail, which is located roughly three miles (five kilometers) northeast of the Longtail discovery, it will drill the Uaru-1 well roughly six miles (10 kilometers) east of the Liza field, the supermajor added.

ExxonMobil affiliate Esso Exploration and Production Guyana Limited operates Stabroek and owns a 45-percent stake in the block. Hess Guyana Exploration Ltd. and CNOOC Petroleum Guyana Limited own 30-percent and 25-percent interests, respectively.

“Tripletail is the 14th discovery on the Stabroek Block and further underpins the Turbot area as a major development hub,” Hess CEO John Hess said in a separate written statement. “The discovery adds to the previously announced gross discovered recoverable resource estimate of more than 6 billion barrels of oil equivalent on the Stabroek Block, with multibillion future barrels of future exploration potential remaining.”

Elsewhere in Stabroek, the Stena Carron drillship is drilling the Ranger-2 well and will subsequently conduct a well test at Yellowtail-1, ExxonMobil and Hess stated. Moreover, the firms noted the Noble Bob Douglas drillship is completing development drilling operations for the Liza Phase 1 project – set start up by early 2020 and product up to 120,000 barrels of oil per day with the Liza Destiny floating production storage and offloading (FPSO) vessel.

Additionally, ExxonMobil noted that it will add a fourth drillship in Stabroek – the Noble Don Taylor – next month.

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