Drilling at Longtail-3 encountered 230 ft (70 m) of net pay, including newly identified, high quality hydrocarbon bearing reservoirs below the original Longtail-1 discovery intervals. The well is located approximately two miles (3.5 km) south of the Longtail-1 well. It was drilled in more than 6100 ft (1860 m) of water by the Stena DrillMAX.
“Longtail-3, combined with our recent discovery at Uaru-2, has the potential to increase our resource estimate within the Stabroek block, demonstrating further growth of this world-class resource and our high-potential development opportunities offshore Guyana,” said Mike Cousins, senior vice president of exploration and new ventures at ExxonMobil. “We will continue to leverage our core competitive advantages in our ongoing exploration campaign, delivering substantial value to the Guyanese people, our partners and shareholders.”
The Longtail-1 discovery in the Stabroek Block was drilled in 2018, encountering approximately 256 ft (78 m) of high-quality, oil-bearing sandstone reservoir.
ExxonMobil has deployed two additional drillships in 2Q21; the Stena DrillMAX and the Noble Sam Croft to enable further exploration and evaluation, while continuing development drilling activities offshore Guyana. As the company advances its 15-well campaign in the Stabroek block, DrillMAX will move to Whiptail-1, while the Noble Sam Croft supports development drilling for Liza Phase 2.
In other drilling activity in the Stabroek Block, the Mako-2 evaluation well confirmed the quality, thickness and areal extent of the reservoir. When integrated with the previously announced discovery at Uaru-2, the data supports a potential fifth floating production storage and offloading vessel in the area east of the Liza complex. The Koebi-1 exploration well in the Stabroek block has shown evidence of non-commercial hydrocarbons.
The Stabroek Block is 6.6 million acres (26 800 km2). ExxonMobil affiliate Esso Exploration and Production Guyana Limited is operator and holds 45% interest in the Stabroek Block. Hess Guyana Exploration Ltd. holds 30% interest and CNOOC Petroleum Guyana Limited, a wholly-owned subsidiary of CNOOC Limited, holds 25% interest.
Read the latest issue of Oilfield Technology in full for free: Issue 1 2021
Oilfield Technology’s first issue of 2021 begins with a look at US tight oil’s prospects this year. The issue then moves on to cover completions technology, production forecasting, electric fracturing, sand recovery and more.
Exclusive contributions come from Rystad Energy, Archer, Weatherford, Halliburton, CGG, NOV, TETRA Technologies, Clariant and more.
Read the article online at: https://www.oilfieldtechnology.com/exploration/09062021/exxonmobil-makes-new-stabroek-block-discovery/
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