Schlumberger Limited is an oilfield services company. Schlumberger employees represent more than 140 nationalities working in more than 120 countries. Schlumberger has four principal executive offices located in Paris, Houston, London, and The Hague.
Baker Hughes Company is an American international industrial service company and one of the world's largest oil field services companies. The company provides the oil and gas industry with products and services for oil drilling, formation evaluation, completion, production and reservoir consulting. Baker Hughes is organized in Delaware and headquartered in Houston. The company was originally known as Baker Hughes Incorporated until 2017 when it was merged with GE Oil and Gas to become Baker Hughes, a GE Company (BHGE), then in 2019 the company divested from General Electric and became Baker Hughes Company. As of September 2020, GE is no longer majority owner of Baker Hughes, owning less than 37% and intending to completely divest its ownership stake over the next few years.
Ensign Energy Services Inc. is a publicly traded Canadian company that provides oilfield services for the North American and international market. Founded in 1987, Ensign is headquartered in Calgary, Alberta. Ensign's Common Shares are publicly traded though the facilities of the Toronto Stock Exchange under the trading symbol ESI.
Aker Solutions ASA, an engineering company based in Oslo, provides the products, systems and services required to unlock energy from sources such as oil, gas and offshore wind. The company, founded in 1841, was known as Aker Kværner until 2008.
Transocean Ltd. is the world's largest offshore drilling contractor based on revenue and is based in Vernier, Switzerland. The company has offices in 20 countries, including Canada, the United States, Norway, Scotland, India, Brazil, Singapore, Indonesia, and Malaysia.
The China National Petroleum Corporation (CNPC) is a major national oil and gas corporation of China and one of the largest integrated energy groups in the world. Its headquarters are in Dongcheng District, Beijing. CNPC was ranked fourth in 2020 Fortune Global 500, a global ranking of the largest corporations by revenue.
China Oilfield Services (COSL) is an oilfield services company. It is a majority owned subsidiary of Chinese state owned company CNOOC Group. It also has a listed sister company in Hong Kong, CNOOC Limited.
NOV Inc. is an American multinational corporation based in Houston, Texas. It is a leading worldwide provider of equipment and components used in oil and gas drilling and production operations, oilfield services, and supply chain integration services to the upstream oil and gas industry. The company conducts operations in more than 600 locations across six continents, operating through three reporting segments: Rig Technologies, Wellbore Technologies, and Completion & Production Solutions.
Apache Corporation is an American energy company engaged in hydrocarbon exploration. It is organized in Delaware and headquartered in Houston. The company is ranked 411th on the Fortune 500.
Prosafe SE is the world's leading owner/operator of semi-submersible accommodation vessels. The company is listed on the Oslo Stock Exchange.
Seadrill is a deepwater drilling contractor for the petroleum industry. It is incorporated in Bermuda for tax purposes and managed from London And Houston The company operates semi-submersible platforms, jackup rigs and drillships.
Aker Drilling, was a Norwegian drilling rig operation company; based in Stavanger, Norway and majority owned by the Aker Group. It was listed on Oslo Stock Exchange under the ticker - 'AKD'.
Weatherford International plc is an American Irish-domiciled multinational oil and gas company which is one of the largest in the world.
Songa Offshore SE is a European offshore drilling contractor founded in 2005 with offices in Cyprus, Stavanger, Oslo, Houston, Kuala Lumpur, Aberdeen, and Singapore.
Nabors Industries is an American global oil and gas drilling contractor based and headquartered in Houston, Texas. Nabors owns the largest land drilling fleet in the world with approximately 400 rigs in more than 20 countries. Company consists of the following business segments: U.S. Drilling, Canada Drilling, International Drilling, Drilling Solutions, and Rig Technologies.
Saipem S.p.A. is an Italian multinational oilfield services company and one of the largest in the world. Until 2016 it was a subsidiary of Italian oil and gas supermajor Eni, which still retains approximately 30% of Saipem's shares.
Roxar AS was a provider of products and associated services for reservoir management and production optimisation in the upstream oil and gas industry. Roxar was headquartered in Stavanger, Norway and operated in 19 countries with around 900 employees. Roxar offered software for reservoir interpretation, modelling and simulation, as well as instrumentation for well planning, monitoring, metering and production optimisation. Roxar was acquired by Emerson Electric Company in April 2009.
Helix Energy Solutions Inc., known as Cal Dive International prior to 2006, is an American oil and gas services company headquartered in Houston, Texas. The company is a global provider of offshore services in well intervention and ROV operations of new and existing oil and gas fields.
Cameron International Corporation though now operating under Schlumberger, is a global provider of pressure control, production, processing, and flow control systems as well as project management and aftermarket services for the oil and gas and process industries. Cameron was acquired by Schlumberger (SLB) in 2016, and now operates as 'Cameron, a Schlumberger Company.' At the start of the SLB acquisition in 2015, Cameron employed approximately 23,000 people and delivered $9.8 billion in revenue.
Dana Energy is a private oil and gas company headquartered in Tehran, Iran. It is an Exploration and Production (E&P) and Oilfield Services company operating in MENA. Dana Energy was formed in 2000, initially as an Oilfield Services company and ventured into field development in 2008. By the addition of petroleum products trading to its portfolio in 2013, Dana Energy has extended into the midstream sector.
$70.3 million (2007)
