Woodside Petroleum is an oil and gas exploration and production company based in Perth. The group is engaged in the exploration, development, production and marketing of gas and oil from Australia, the Americas and Africa to customers worldwide. The company has interests in Australia, Africa, the United States and customer centres in Korea, Japan, China and Singapore. Its major production business is centred on the North West Shelf Venture, which comprises a number of offshore gas and gas-condensate fields.