Oilfield workers collect a crude oil sample at an oil well operated by Venezuela’s state oil company PDVSA, in the oil rich Orinoco belt, near Morichal at the state of Monagas April 16, 2015. Venezuela has launched talks this month on a novel plan to blend the country’s heavy crude with light oil from other OPEC allies, seeking to create a new variety that can compete against swelling U.S. and Canadian supplies. The proposal, which would expand on a pilot scheme involving Algerian oil last year, envisions supplying refineries built for medium-grade crudes rather than the light oil that has become plentiful as a result of the North American shale boom, said the head of state oil company PDVSA, Eulogio del Pino. Picture taken on April 16, 2015. REUTERS/Carlos Garcia Rawlins