ExxonMobil has been awarded a 35-year concession for another block in Vaca Muerta, a massive shale play that has been driving the company's growth in oil and natural gas production in Argentina.

The government of Neuquen, a southwestern province where most of the play is located, said late Aug. 13 that it granted ExxonMobil the concession for Los Toldos II Oeste, according to a statement. ExxonMobil is the operator of the block with a 90% stake, with the rest held by Gas y Petroleo del Neuquen, the province's state oil company.

As part of the concession, ExxonMobil vowed to drill and complete two wells during a four-year pilot program on the 19,200-acre block in the volatile oil window with the view to drilling 44 wells as part of the transition to full-scale development.

The test wells will have 1,200-meter (3,937-feet) horizontal laterals and 20 frac stages, while the subsequent 44 wells will have 3,000 meter laterals and 50 frac stages each, according to the statement.

As part of the pilot, ExxonMobil will also drill a well into Tordillo, a tight formation that lies just below Vaca Muerta. It will also build facilities to process the production and acquire 3D seismic data for Vaca Muerta, the provincial government said.

Los Toldos II Oeste is adjacent to Bajo del Choique-La Invernada and Los Toldos I Sur, ExxonMobil's most productive oil blocks in the play that have been driving its production growth in the country.

ExxonMobil's total oil production in Argentina, where it is focused on Vaca Muerta, shot up more than fourfold to 5,510 b/d in March -- before a nationwide slump during the coronavirus lockdown of the economy that is still in effect -- from 1,227 b/d in the year-earlier month, according to data from the Argentina Oil and Gas Institute, an industry group. Over the same period, its gas production more than doubled to 1.8 million cu m/d from 703,000 cu m/d, the data show.