This project analyses the supply chain of goods and services to the oil sector (upstream) in Norway and Angola with a particular emphasis on the extent of relation-specific investments and the type of contracts between oil companies and their contractors. The project discusses potential changes in the multilateral framework towards liberalising competition and trade in the oil industry, including Norwegian and Angolan policies towards such liberalisation efforts. The effects of liberalising trade on the market structure of supplier goods and the supply chain in the two countries, including the composition of chains, are to be looked into, also the forms of vertical relations and investment patterns within the chains.