Linked here is a detailed quantitative analysis of Occidental Petroleum Corporation (OXY). Below are some highlights from the above linked analysis:
Company Description: Occidental Petroleum Corporation is one of the largest oil and gas companies in the U.S., OXY has global exploration and production operations. Its subsidiary, OxyChem, is one of the largest U.S. merchant marketers of chlorine and caustic soda.
Fair Value: In calculating fair value, I consider the NPV MMA Differential Fair Value along with these four calculations of fair value, see page 2 of the linked PDF for a detailed description