Economy of Venezuela is mostly based on their crude oil supply, although they do also export things like steel and aluminum. Many other countries depend on the crude oil from Venezuela, including the United States. Venezuala is the fifth largest crude exporter in the world, and supplies only about 13 percent of daily oil imports to the United States which makes them our forth largest supplier. They produce about three million barrels of crude oil each and every day, however they only export about 75 percent of that. (http://news.bbc.co.uk/1/hi/business/2549589.stm).
Venezuela is a founding member of OPEC, which handles the prices and quantity of oil that is pumped to other places. From what I have read, Venezuela depends on selling crude oil for its livelyhood. This puts them in a bad position.