Venezuela has also suffered a large-scale "brain drain," as a once vibrant and specialized oil workforce has spent the past decade leaving the country for other, more stable and higher-paying markets such as Houston and the Middle East.In Venezuela's oil fields, rigs have fallen apart and been robbed by thieves, while spills go unmanaged. At the country's ports, infrastructure has fallen into such disrepair that it can take up to five days to load a supertanker where once it took only one day, according to ...