Chevron Corp

Occidental Petroleum Corporation, founded in 1920, is one of the leading producers of oil and natural gas in the United States. The company s areas of operation include oil recovery, exploration and oilfield acquisitions. It uses advanced technological equipment for its drilling activities. The company is also a producer of coal and chemical products, including sodium silicates, polyvinyl chloride, caustic soda, and natural gas odorants. It has a marketing division that offers distribution and risk management services to customers. The company provides financial assistance for community services and economic development. Ray R. Irani has been the chief executive officer for Occidental Petroleum for the more than 15 of the 23 years he has been with the company. Irani graduated from the American University Beirut Lebanon with a bachelor s degree and earned a doctorate from the University of Southern California. Occidental Petroleum Corporation has operations in the United States, Latin America, the Middle East and Asia, and is headquartered in Los Angeles.

Shell Oil Company is a leading oil and gas producer in the deep water Gulf of Mexico, a recognized pioneer in oil and gas exploration and production technology and one of America s leading oil and natural gas producers, gasoline and natural gas marketers and petrochemical manufacturers. The company operates in 50 states and employs more than 22,000 people delivering energy in technically innovative ways. As one of the largest providers of transport fuels, the company is committed to helping drivers use less energy and reduce emissions with advanced fuels and lubricants, leading the search for better biofuels and promoting government policies to reduce CO2 emissions from transport. In the United States, Shell is involved in the protection of the unique ecosystem of coastal Louisiana and has partnered with several local and national groups, such as America s Wetland Campaign, working to preserve the state's natural assets. It is an affiliate of the Shell Group, a worldwide group of energy and petrochemical companies that operate in more than 140 countries and territories. The Shell Group was started from an alliance made in 1907 between Royal Dutch Petroleum Company and The Shell Transport and Trading Company. Shell Oil Company maintains a location in Houston.