Reuters: Venezuela’s PDVSA offers Rosneft oil stake Venezuela has offered Russian oil producer Rosneft (OTC:RNFTF) a 10% stake in a joint venture in its Orinoco Belt extra-heavy crude area, in a sign of the country's dire economic situation and Russia's growing influence there, Reuters reports. State-run PDVSA owns 70% and Chevron (NYSE:CVX) holds 30% of the Petropiar venture, which includes an oil field and a 210K bbl/day oil upgrader.