The five equal participants in the North West Shelf Project are:

BP Developments Australia Pty Ltd is a subsidiary of the BP plc global oil and gas company. The BP group has been active in Australia since 1920, in both exploration, refining (Kwinana, Western Australia) and the marketing of oil and gas products. BP Developments Australia Pty Ltd holds a 1/6th share in the North West Shelf Joint Venture as well as licenses in the Browse and Carnarvon basin.

Chevron is one of the world's leading integrated energy companies and through its Australian subsidiaries, has been present in Australia for more than 60 years. Chevron Australia is the operator of the Gorgon and Wheatstone natural gas projects; manages its equal one-sixth interest in the North West Shelf Venture; and operates Australia's largest onshore oilfield on Barrow Island. Chevron is also a significant investor in exploration offshore northwest Australia and its Perth-based Global Technology Centre provides technology support and solutions to the company's operations in Australia and around the world.

Japan Australia LNG (MIMI) Pty Ltd - known colloquially as "MIMI" - is an Australian-resident company owned equally by the long-established and well respected Japanese trading houses Mitsubishi Corporation and Mitsui & Co., Ltd. MIMI was established by these two houses in 1985 to manage their 1/6th interest in the North West Shelf LNG Project, which they acquired following an historic agreement signed in 1984. The core of MIMI's business is the supply of LNG through long-term contracts to Asian power and gas utilities.

Shell Australia Pty Ltd is part of The Shell Group, a global group of energy and petrochemical companies. Our aim is to meet the energy needs of society, in ways that are economically, socially and environmentally viable, now and in the future. Shell commenced operations in Australia in 1901 and is now a major participant in the country's upstream oil and gas industry. 

Woodside is Australia's largest independent oil and gas company with a global portfolio, recognised for its world-class capabilities - as an explorer, a developer, a producer and supplier of energy. Since 1984, Woodside has operated the North West Shelf Project on behalf of the Project participants. In 2022, Woodside merged with BHP’s petroleum business , the company’ s global portfolio includes oil and gas assets and interests in Australia, the Gulf of Mexico, the Caribbean, Senegal and Timor-Leste.

The China National Offshore Oil Corporation is also part of the North West Shelf Venture but does not have an interest in its infrastructure.