The two companies would form a transitory business union contract (UTE) to conduct the exploration.
"A" envelopes for technical offers were opened July 16 and "B" envelopes for economic offers will be opened October 8.
Provincial authorities could not say when contacted by BNamericas if the concession would continue to the economic round, be fast tracked or relaunched.
The concession covers the Beazley block (6,299km2), the Estancia La Daisy block (1,430km2) and the Pampa de Las Salinas (1,888km2) block.
Three companies had purchased data packages including Repsol YPF and Epsur, in addition to the San Luis Energia-Rovella Carranza UTE.
Exploration works will require a minimum investment of US$20mn, BNamericas previously reported.
The eventual winner will hold the concession for nine years and will conduct geological work and exploratory drilling to confirm or rule out the existence of hydrocarbons in the province, according to the statement.
Visit BNamericas to access our real-time news reports, 10-year archive, Fact File company database, and latest research reports. Click here for a Free two week trial to our Latin America Oil & Gas information service.
Most Popular Articles
From the Career Center
Jobs that may interest you