LIMA, Nov 3 (Reuters) - Peruvian oil firm Upland Oil and Gas said on Monday it would ask the South American nation's regulator to review its application to operate in Block 192, once Peru's largest Amazon oilfield, days after it was disqualified.

State agency Perupetro disqualified Upland, which operates other reserves in the country's Amazon region, on grounds it did not demonstrate financial capacity, but Upland said it did have sufficient capital to invest and resume exploitation.

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The now dormant block has been the site of protests by local Indigenous communities demanding remediation for extensive damage to the surrounding forest, soil and waterways.

Block 192, which is located near the border with Ecuador, is considered key to supplying the Talara refinery of state oil firm Petroperu (PETROBC1.LM) , opens new tab, which is battling a debt crisis following its expensive modernization of the plant.

A Perupetro commission determined late last week that the financial solvency presented by Upland was "insufficient to prove its economic and financial capacity to assume 79% of the license contract for Block 192."

"Upland Oil and Gas reiterates that it has sufficient capital and financing to comply with the investment program indicated by Perupetro - despite considering it excessive," Upland responded in a statement.

It added that it was willing to provide a credit line to the embattled state oil firm.

A source close to Upland said the firm already had the $147.5 million Perupetro had asked of the private oil firm to demonstrate its financial capacity, and that it had informed the regulator in early October.

Perupetro was not immediately available to comment.

State producer Petroperu, which would be a minority partner in the block, has previously said it expects to produce up to 12,000 barrels per day of crude oil from the reserve.

"This important asset for the country has been paralyzed for more than five years, causing the Peruvian government to lose more than $1 billion in taxes and royalties," Upland said.

Once Peru's largest - and leakiest - field, Block 192's production was put on hold largely as a result of a number of oil spills permeating the tropical topsoil, native plants and streams that flow to the Amazon River.

https://www.reuters.com/business/energy/perus-upland-challenges-disqualification-relaunch-top-amazon-oilfield-2025-11-03/