He clearly intends to become President-for-Life so the only way he'll leave office is feet first. The only question is will his reign be short or will he have the time to wreck Venezuela the way his idol has wrecked Cuba.
It won't happen until we start to hear that oppenents and their families are mysteriously disappearing.
Best thing the oil companies can do is tell this lunatic they are shutting down and moving their operations. Force unemployment on the people and blame it on Chavez.