Exxon Mobil ( XOM) has signaled continued interest in sending an assessment team to Venezuela for evaluating oil infrastructure and other assets, according to Reuters, citing an unnamed source.

Exxon, ConocoPhillips (COP.N) and Chevron were for decades the most prominent partners of state company PDVSA, contributing to developing output at the vast Orinoco Belt, which is now the country's main oil region.