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504 companies

Trinidad & Tobago National Petroleum Marketing Co Ltd

Port of Spain, Trinidad and TobagoUpdated Jun 2002
Bunker Supplier

The Trinidad & Tobago National Petroleum Marketing Company Limited is the sole marketer of petroleum fuels in Trinidad and Tobago, providing a wide range of fuels, lubricants, and related services including marine and aviation bunkering.

UNOCAL

Location not listedUpdated Dec 2002

UNOCAL was an American oil company engaged in exploration, production, and refining of petroleum products.

USX-Marathon

Location not listedUpdated May 2026

Marathon Oil Corporation is an energy company focused on exploration and production, recently acquired by ConocoPhillips.

Ultra Petroleum Corp.

Location not listedUpdated Dec 2002

PureWest Energy is the largest producer of natural gas in Wyoming, operating over 3,400 wells and managing more than 108,000 net mineral acres in the Pinedale Field, with a focus on responsible and efficient clean natural gas production.

Unit Corporation

Location not listedUpdated Dec 2002

Unit Corporation is a Tulsa-based, publicly held energy company engaged in oil and gas production through its subsidiary, Unit Petroleum Company.

Unocal Corporation

Los Angeles, CA, United StatesUpdated Aug 1999

Union Oil Company of California (Unocal) was a major American petroleum explorer, producer, refiner, and marketer with tanker, pipeline, and marine bunker fuel operations. The company was acquired by Chevron in 2005 and no longer operates as an independent entity.

Valero Marketing and Supply Co.

San Antonio,, Texas, United StatesUpdated Mar 2007
Bunker Supplier

Valero Marketing and Supply Co. is the largest global independent petroleum refiner and the largest renewable fuels producer in North America, focusing on refining, renewable diesel, and fuel supply.

Ventbunkers AS

Ventspils, LatviaUpdated Feb 2000
Bunker Supplier

JSC Ventbunkers is one of the leading oil product transshipment terminals in the port of Ventspils, Latvia, with an annual handling capacity of up to 7 million tons.

WSPA Western States Petroleum Association

Sacramento,, CA, United StatesUpdated Oct 2003

Western States Petroleum Association (WSPA) is a non-profit trade association representing petroleum companies involved in exploration, production, refining, transportation, and marketing in six western U.S. states.

Warrior Technologies, Inc

Location not listedUpdated Dec 2002

Warrior Technology Services, Inc. provides innovative software solutions for the oil and gas industry, specializing in risk analysis and geosteering software.

Wilks Enterprise, Inc.

S. Norwalk, CT, United StatesUpdated Nov 2004

portable, easy to use infrared analyzers for on-site analysis of total oil and grease and total petroleum hydrocarbon concentrations in water and soil

Windsor Port Authority

Windsor,, Ontario, CanadaUpdated Oct 2003

Windsor Port Authority is a key Canadian Great Lakes port facilitating shipments of aggregates, salt, grains, steel, and petroleum, serving as an integrated transportation hub and economic catalyst in the Windsor-Essex region.

Woodside Petroleum

Location not listedUpdated Dec 2002

Woodside Petroleum is an Australian oil and gas company engaged in the exploration, development, production, and marketing of hydrocarbons.

World Environmental Group, Inc.

Ocala,, FL, United StatesUpdated Nov 2002

W.E.G. provides the most effective and environmentally safe cleaners, degreasers, and oil spill dispersants ever offered to the maritime and petroleum industry. Nature Safe™ products quickly and easily cut through hydrocarbon soils, petroleum and derivatives, fats, oils and greases.

World Marine Egypt

Port Said, EgyptUpdated May 2026
Port AgentBunker Supplier

World Marine Egypt is one of the largest and most reputable companies in the Egyptian marine and petroleum sector, offering shipping, logistics, marine services, and ship agency representation across multiple Egyptian ports.