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908 companies

Tsakos Shipping & Trading S.A. (Head Office)

Athens,, Hellas, GreeceUpdated Nov 2005
Training

Tsakos Shipping & Trading S.A. is a leading global maritime transportation company based in Greece, operating a diverse and modern fleet across energy, dry cargo, and specialized sectors with over half a century of experience.

Tschudi Shipping Company AS

Lysaker ,, NorwayUpdated Jun 2004

Tschudi Shipping Company AS is a family-owned Nordic maritime business providing integrated logistics, shipping, ship management, transshipment, energy advisory, and offshore wind support services with a global reach and strong presence in the Nordics, Baltic, and Continental Europe.

Tucker Energy Services

Location not listedUpdated Dec 2002

Tucker Energy Services is a multi-service organization providing innovative products and solutions to the energy industry since 1935, specializing in oilfield services with a focus on safety and quality.

Turner & Townsend Internationa

Newcastle upon Tyne, United KingdomUpdated Oct 2005

Turner & Townsend is a global consultancy that drives transparency, predictability, and performance on complex projects and programmes across sectors including real estate, infrastructure, energy, and natural resources.

UIT Energy

Location not listedUpdated Dec 2002
Bunker Supplier

UIT Energy provides comprehensive marine fuel supply and logistics services to the maritime industry.

UK Offshore Operators Associat

Location not listedUpdated Dec 2002
Training

UK Offshore Operators Association provides information and resources related to the UK oil and gas industry, including education, oil rig training, health and safety, and renewable energy.

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.

United Refining Energy Corp

New York,, New York, United StatesUpdated Nov 2009

United Refining Energy Corp is a special purpose acquisition company formed in 2007 to acquire businesses or assets in the energy industry through mergers or similar business combinations.

Unocal Corporation

El Segundo,, California, United StatesUpdated Jul 2002

Unocal Corporation's trading organization focused on improving margins in commodity trading of oil and gas.

Upstream Newspaper

Location not listedUpdated Dec 2002

Upstream Online is an independent news source providing analysis and updates on major oil and gas projects, energy transition, and the international energy industry.

Vanco Energy Company (Corporate)

Houston,, Texas, United StatesUpdated Jan 2008

Vanco Energy Company is a leading deepwater exploration company specializing in African offshore oil and gas licenses, with significant operations in Côte d'Ivoire, Ghana, Equatorial Guinea, Gabon, and the Black Sea region.

Vard Marine Inc.

Houston, TX, United StatesUpdated Sep 2017

Vard Marine Inc. is a consulting naval architecture and marine engineering company providing professional ship design, engineering, and shipbuilding technology services with a focus on advanced offshore and specialized vessels.

W&O Supply

Jacksonville,, FL, United StatesUpdated Aug 2005

W&O Supply delivers mission-critical piping, valves, fittings, actuation, instrumentation, and engineered solutions to the global maritime and upstream oil & gas industries, supporting commercial shipping, shipbuilding, military, offshore energy, and cruise lines.

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.

Waring & Associates/Energy Data Solutions, LLC

New Orleans,, Louisiana, United StatesUpdated Jan 2006

Energy Data Solutions, L.L.C. maintains the OCS BBS website providing up-to-date MMS information and comprehensive data services for the Offshore Gulf of Mexico Oil & Gas Industry since 1995.

Wartsila Australia Pty Ltd

Huntingwood NSW, AustraliaUpdated Aug 2005

Wärtsilä Australia Pty Ltd is the Australian subsidiary of Wärtsilä Corporation, a leading global marine solutions supplier and major provider of energy solutions for decentralized power generation and supporting services.

Wartsila Corporation

Helsinki, FinlandUpdated Apr 2005

Wärtsilä Corporation is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets, focusing on decarbonisation and sustainable power solutions.

Wartsila Norway AS

Rubbestadneset, NorwayUpdated Nov 2004

Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets, offering tailored ship machinery, propulsion, and manoeuvring solutions to enhance efficiency and support decarbonisation.