ExxonMobil drilling 14th well for Liza Phase 1 development ahead of evaluation exercise

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ExxonMobil will be embarking on an assessment of the Liza Phase 1 Development reservoir results at the prolific Stabroek Block, where the Liza Destiny FPSO is currently producing oil offshore Guyana. The Noble Bob Douglas is currently drilling the 14th well for Liza Phase 1 which will be the last well to be executed in the initial ramp up operations.

The Liza Phase 1 Development will see a total of 17 wells being drilled. Eight are targeting oil production, while six will be used for water injection and three for gas injection. Gas and water are reinjected to maintain favourable levels of production, since pressure drops in the reservoir when the oil with associated liquids are removed.

“[The Noble] Bob Douglas is actually drilling the 14th well right now on Liza Phase 1 and one of the significant pieces of that is that’s going to be the  last well that needs to be executed in the initial ramp up to support the Liza Destiny operations,” said Ryan Turton, Wells Execution Manager at ExxonMobil Guyana, speaking during a recent virtual presentation.

He said when the 14th well is completed development drilling at Liza Phase 1 will pause and the company will move to evaluate the reservoir results and production results before drilling the remaining wells.

Oil producing at Liza Phase 1 is now averaging 105,000 barrels of oil per day (bpd) and is expected to reach full capacity of 120,000 bpd in December.

The Liza-1 well–discovered in 2015–was the first significant oil find offshore Guyana and encountered more than 295 feet (90 meters) of high-quality oil-bearing sandstone reservoirs and was safely drilled to 17,825 feet (5,433 meters) in 5,719 feet (1,743 meters) of water.

So far, ExxonMobil has made 18 discoveries offshore the South American country and has drilled over 40 wells–inclusive of exploration, appraisal, and development wells.

The estimated gross discovered recoverable resources at the Stabroek Block now stand at approximately 9 billion barrels of oil equivalent resources.

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