ExxonMobil finds more oil in Longtail area offshore Guyana

Offshore staff

IRVING, Texas – ExxonMobil and its partners have discovered oil with the Longtail-3 well on the Stabroek block offshore Guyana.

The well intersected 230 ft (70 m) of net pay, including newly identified, good-quality hydrocarbon bearing reservoirs below the original Longtail-1 discovery intervals (256 ft/78 m of oil-bearing sandstone reservoir).

It was drilled 2 mi (3.5 km) south of Longtail-1 well by the drillship Stena DrillMAX in more than 6,100 ft (1,860 m) water depth.

“Longtail-3, combined with our recent discovery at Uaru-2, has the potential to increase our resource estimate within the Stabroek block, demonstrating… our high-potential development opportunities offshore Guyana,” said Mike Cousins, senior vice president of exploration and new ventures at ExxonMobil.

The next assignment for the Stena DrillMAX on the Stabroek block will be the Whiptail-1 exploratory well, while another drillship, the Noble Sam Croft, supports development drilling for Liza Phase 2.

Elsewhere in the block, the Mako-2 evaluation well confirmed the quality, thickness, and areal extent of the reservoir, ExxonMobil said. The results, combined with the previously announced Uaru-2 discovery, suggest potential for a fifth FPSO, located east of the Liza complex.

However, the Koebi-1 exploration appears to have found non-commercial hydrocarbons.

06/09/2021