Vintage Petroleum, Inc. (NYSE: VPI)

Good to the last drop. Vintage Petroleum makes a living from what other oil and gas producers have left behind. The firm specializes in buying producing properties and trying to increase their yields through various reworking techniques. Vintage has proved reserves of 437.2 million barrels of oil equivalent. It owns properties in the East Texas, Gulf Coast, West Coast, and midcontinent regions of the US. Vintage also has assets in Argentina, Bolivia, and Yemen. It has sold its oil reserves in Ecuador and Trinidad and Tobago to pay down debt. In 2004 Vintage acquired the Argentine assets of Rio Alto Resources International for $36.4 million. That year Vintage sold its Canadian assets for $275 million.