SCHLUMBERGER

Schlumberger Limited is the world's largest oilfield services company. Schlumberger employs approximately 100,000 people representing more than 140 nationalities working in more than 85 countries.

canadian natural (cnrl)

Canadian Natural Resources Limited, or CNRL or Canadian Natural, is a Canadian oil and gas exploration, development and production company, with its corporate head office in Calgary, Alberta. Along with its core area Western Canadian Sedimentary Basin (WCSB), CNRL also has North Sea and offshore West Africa fields. By 2011, with a production of 121,000 barrels (19,200 cube meters), CNRL was Canada's largest oil company and Canada's "single biggest conventional heavy oil producer".

Transocean

Transocean Ltd. is one of the world's largest offshore drilling contractors and is based in Vernier, Switzerland. The company has offices in 20 countries, including Switzerland, Canada, United States, Norway, Scotland, India, Brazil, Singapore, Indonesia and Malaysia.

Tetra

TETRA Technologies, Inc. (NYSE: TTI) is a geographically diversified oil and gas services company, focused on completion fluids and associated products and services, comprehensive water management solutions, frac flowback, production well testing, offshore rig cooling, and compression services and equipment. TETRA owns an equity interest, including all of the general partner interest, in CSI Compressco LP (NASDAQ:CCLP), a master limited partnership. Headquartered in The Woodlands, Texas, TETRA is a global company with employees and operations on six continents.

mi swaco

M-I SWACO, a Schlumberger company, offers drilling fluid systems to improve drilling performance, technology to maximize production, and environmental solutions to safely manage waste volumes.

weatherford

Weatherford is one of the world's largest multinational oil and natural gas service companies. The company provides products and services for drilling, evaluation, completion, production and intervention of oil and natural gas wells, along with pipeline construction and commissioning.

VANCO / PAN ATLANTIC

PanAtlantic Energy Group offers oil and gas exploration and production services. The company’s services include shelf geological and geophysical prospecting, deep-water drilling, and crude oil and natural gas production. It was formerly known as Vanco Overseas Energy Limited and changed its name to PanAtlantic Energy Group in May 2012.

KCA DEUTAG

KCA Deutag is an international oil and gas services company with headquarters in Aberdeen, United Kingdom. It has approximately 9,000 employees and operates in more than 20 countries worldwide.

tullow oil

Tullow Oil plc is a multinational oil and gas exploration company founded in Tullow, Ireland with its headquarters in London, United Kingdom. It has interests in over 150 licenses across 25 countries with 67 producing fields and in 2012 produced on average 79,200 barrels of oil equivalent per day. Its largest activities are in Africa and the Atlantic Margins, where it has discovered new oil provinces in Ghana, Uganda, Kenya and French Guiana.

DOLPHIN DRILLING

Dolphin Drilling is one of the longest established independent drilling contractors in the offshore arena tracing its roots back to the earliest offshore exploration activity in the North Sea in the mid nineteen sixties. Dolphin Drilling forms part of Fred. Olsen Energy ASA which is part of the Fred. Olsen Group which has a strong shipping history stretching over 160 years.

vantage DRILLING

Vantage Drilling International is an offshore drilling contractor that operates and manages a fleet of modern, high specification drilling rigs on a worldwide basis. Their owned and managed fleet currently consists of three ultra-deep-water Drillships, four premium BMC 375 Jackups and one standard Jackup. They also provide construction management services for two ultra-deep-water drillships.

lukoil

The PJSC Lukoil Oil Company is a Russian multinational energy corporation headquartered in Moscow, specializing in the business of extraction, production, transport, and sale of petroleum, natural gas, and petroleum products.

FRANK’S INTERNATIONAL

Frank's International is a global oil services company providing highly engineered tubular running services, tubular fabrication, and specialty well construction and well intervention solutions with a focus on complex and technically demanding wells.

Foxtrot

Maersk drilling

Maersk Drilling is a drilling rig operator based in Copenhagen, Denmark. It is a subsidiary of the A.P. Moller – Maersk Group, established in 1972. Maersk Drilling is one of the A.P. Moller – Maersk Group's core businesses.

ocean rig

Ocean Rig UDW Inc. is an operator of semi-submersible oil rigs and UDW drillships based in Athens, Greece. The company also maintains offices in Luanda, Angola, Jersey, Rio de Janeiro, Brazil and Stavanger, Norway.

african petroleum

African Petroleum listed on the Oslo Axess (APCL), is an independent oil and gas exploration company led by an experienced Board and management team, with substantial experience in oil and gas exploration, appraisal, development and production. The Company is a significant net acreage holder in West Africa with estimated net unrisked mean prospective oil resources in excess of 7.4 billion barrels.

total

Total, energy producer and provider, is the world's 4th-ranked international oil and gas company and a major player in low-carbon energies.

vitol

The Vitol Group is a global energy and commodity trading company. Though physical trading, logistics and distribution are at the core of the business, these are complemented by refining, shipping, terminals, exploration and production, power generation, mining and retail businesses. Vitol has 40 offices worldwide and its largest operations are in Geneva, Houston, London, and Singapore.

Vioco

Vioco Petroleum Limited operates as an oil and gas company that focuses on the exploration and development/production of hydrocarbons in Cote d’Ivoire. Vioco Petroleum Limited was formerly known as Rialto Energy (Côte d'Ivoire) Limited and changed its name to Vioco Petroleum Limited in December 2013.

sapurakencana drilling (SKD)

Sapura Energy Berhad (formerly known as SapuraKencana Petroleum Berhad) (“Sapura Energy” or “Group”) is a global integrated oil and gas services and solutions provider operating across the entire upstream value chain. The Group’s spectrum of capabilities covers exploration, development, production, rejuvenation, as well as decommissioning and abandonment.

Altus intervention

Altus Intervention Limited, a well intervention specialist, provides wireline, wireline tractor, and logging services in Norway, Denmark, and the United Kingdom. It provides heavy duty fishing services, wireline tractor services, scale removal services, stroker services, and auxiliary services. The company also offers coiled tubing and pumping services, well engineering, pipeline services, vacuum testing, well barrier surveillance, and process services.

Pacific drilling

Pacific Drilling is an offshore ultra-deepwater drilling company. Their fleet of seven ultra-deepwater drillships represents one of the youngest and most technologically advanced fleets in the world.

aggreko

Aggreko plc is a supplier of temporary power generation equipment and of temperature control equipment. For more than 50 years they have helped businesses around the world improve productivity, manage power demands and plan for emergencies.

halliburton

Halliburton is an American multinational corporation. One of the world's largest oil field service companies, it has operations in more than 70 countries. It owns hundreds of subsidiaries, affiliates, branches, brands, and divisions worldwide and employs approximately 50,000 people.

ophir

Ophir Energy plc is an oil and gas exploration and production company based in London. It owns both operating and non-operating assets in Africa, Asia, and Mexico.

seadrill

Seadrill is a deepwater drilling contractor that provides drilling services to the oil and gas industry. It is incorporated in Bermuda and managed from London. Seadrill has operations in Angola, Brunei, the Republic of Congo, Indonesia, Malaysia, Nigeria, Norway, Thailand, Brazil, Saudi Arabia, UAE, United States and the United Kingdom.