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An Exxon Mobil Corp logo is seen at the Rio Oil and Gas Expo and Conference, in Rio de Janeiro, Brazil, on Sept. 24, 2018.SERGIO MORAES/Reuters

Exxon Mobil Corp. on Tuesday estimated production at its top U.S. shale field would rise to one million barrels of oil and gas a day as early as 2024 – from 600,000 by 2025 previously.

The target is five times as much as the company now produces in the Permian Basin of West Texas and New Mexico where the world’s largest publicly traded oil company has 1.6 million acres.

Exxon said in a statement that its production would be profitable in the Permian even if oil prices fell to US$35 a barrel. U.S. oil futures settled at US$56.59 a barrel on Monday.

Exxon has 48 rigs working in the Permian – about 10 per cent of the region’s total, according to General Electric Co.'s Baker Hughes – and expects to increase the number of drilling rigs to 55 by year-end.

It also has 30 sites under construction to handle oil and gas processing and water handling, and between 4,000 and 5,000 workers on its acreage on any given day, Staale Gjervik, the newly named president of Exxon’s shale arm XTO Energy, said in an interview on Monday. Mr. Gjervik replaced Sara Ortwein, who retired March 1, an Exxon spokeswoman said.

Exxon bought out shale producer XTO in 2009 and in 2017 purchased the Permian holdings of the Bass family of Fort Worth, Texas. Now the company is approaching the acreage with a manufacturing mindset, Mr. Gjervik said. “With the size of this acreage, we can apply some of the more traditional megaproject type tools we have within Exxon Mobil,” he said.

The Permian, which will produce about four million b/d this month, is expected to generate 5.4 million b/d by 2023, greater than any single member of the Organization of the Petroleum Exporting Countries other than Saudi Arabia, according to consultancy IHS Markit.

Exxon said last week that its oil and gas reserves globally rose nearly 23 per cent last year, driven mainly by holdings in U.S. shale, offshore Guyana and Brazil.

The reserve update, which is required annually by U.S. regulators, comes as Exxon has been spending heavily under chief executive Darren Woods on fields and projects to reverse weak oil and gas production.

Exxon holds its annual meeting with analysts on Wednesday in New York.