PetroSA (The Petroleum, Oil and Gas Corporation of South Africa SOC Ltd.) is the national oil company (NOC) of South Africa. Its main activities are the extraction of natural gas from offshore fields about 89 km from Mossel Bay, the production of synthetic fuels from this gas through a gas to liquids (GTL) process, and the extraction of crude oil from oil fields off the South Coast of South Africa.[1] The GTL Refinery is located in Mossel Bay.