The world’s biggest offshore drilling companies

From Texan drilling giant Schlumberger to Bermudan contractor Seadrill, profiles the world’s 10 biggest drilling companies based on 2014 revenues.

Schlumberger - Epsilon oil field

Schlumberger - $48.6bn

Schlumberger, the world's biggest oilfield services company, earned a record full-year revenue of $48.6bn in 2014, a 7% increase from its 2013 revenue of $45.3bn.

Headquartered in Houston, Texas, Schlumberger provides products and services such as formation evaluation, directional drilling, well cementing and stimulation, well completion and productivity as well as information management, consulting, IT infrastructure and software services.

Its offshore drilling services include extended-reach, deepwater, and high-pressure, high-temperature wells, multilaterals and unconventional gas. Schlumberger provided drilling management services for the Epsilon Oilfield in Aegean Sea, Greece. It was also involved in the development of oilfields like Avouma Field in Gabon and Bream Area Project, Central North Sea, Norway.

Halliburton - $32.9bn

Halliburton, an oilfield services provider based in Houston and Dubai, earned $32.9bn in revenue in 2014, recording 12% growth over its 2013 revenue of $29.4bn.

Halliburton provides products and services to oil and gas industry throughout the reservoir lifecycle, from locating reserves to drilling and formation evaluation, well construction and completion and production optimisation.

Offshore drilling systems and services offered by Halliburton include directional and horizontal drilling, logging-while-drilling, measurement-while-drilling, underbalanced applications, multilateral systems and rig site information systems. Halliburton provided drilling services on the Jasmine field in the North Sea, UK. It was also involved in the development of offshore fields like Tupi, and Barracuda and Caratinga Fields in Brazil.

Baker Hughes - Enfield

Baker Hughes - $24.6bn

Houston-based oilfield services company Baker Hughes recorded revenue of $24.6bn in 2014, a 10% increase over the previous year.

Baker Hughes provides drilling, completion and production services for oil, gas and alternative energy industries. Offshore drilling systems provided by the company include directional drilling services, coiled tubing and re-entry, measurement-while-drilling, logging-while-drilling, drilling optimisation, casing/liner drilling systems, and remote drilling.

Skuld offshore field in the Norwegian Sea and the Who Dat field in the US Gulf of Mexico are some of the major offshore oil fields for which Baker Hughes provided drilling services.

Fluor - $21.5bn

Engineering and construction firm Fluor earned revenue of $21.5bn in 2014, down from $27.4bn in 2015.

Based in Irving, Texas, the group provides engineering, procurement, construction and construction management services for drilling and production facilities at offshore fields and other energy assets.

Fluor was involved in the development of certain major offshore fields such as Nasr/Al-Nasr field development in Abu Dhabi, UAE, the Enfield oil field in Australia, the Bohai Bay field in China and the Ku-Maloob-Zaap field in Mexico.


Weatherford - $14.9bn

Irish oil and natural gas service company Weatherford's revenue in 2014 dropped slightly by 2% to $14.9bn down from 2013.

Weatherford's portfolio of services include well construction, formation evaluation, well completion and artificial lift. The company provides drilling services including rotary-steerable systems (RSSs), performance drilling, highly advanced logging-while-drilling (LWD) technologies, measurement-while-drilling (MWD), underbalanced drilling, and managed pressure drilling.

Weatherford provided drilling services for the Cliff Head Field in Australia and also participated in the development of oilfields Grane field in Norway and Tindalo oil field in the Philippines.

Saipem - $14bn

Italian offshore and onshore oil and gas contractor Saipem, a subsidiary of Italian energy company Eni, earned revenue of approximately $14bn in 2014, compared to $11.3bn in 2013.

Saipem provides engineering, procurement, project management and construction services for the design and the execution of offshore and onshore projects. It operates an advanced drilling fleet in shallow and deep water, composed of 16 units including drillships, semi-submersibles and jack-ups.

Saipem has drilled more than 1,750 offshore wells and was involved in the development of offshore oil fields including Kashagan offshore oilfield in Kazakhstan, Kaombo Ultra-Deep Offshore Project in Angola and Eldfisk Oil and Gas Field in North Sea, Norway.


Transocean - $9.17bn

Revenue earned by Swiss offshore drilling contractor Transocean in 2014 remained steady at $9.17bn as compared to $9.25bn in 2013.

Transocean provides offshore contract drilling services for energy companies, and is specialised in deepwater and harsh-environment drilling. It owns and operates a fleet of 68 mobile offshore drilling units including high-specification rigs consisting of ultra-deepwater, deepwater and premium jack-up rigs.

Some of the offshore projects that utilised Transocean's services include Leviathan gas field in the Mediterranean Sea near Israel, Jack / St Malo Deepwater Oil Project located in US Gulf of Mexico, and the Tyrihans Oil and Gas Field in the Norwegian Sea.

Nabors Offshore - $6.8bn

2014 revenue at Nabors, an oil, natural gas and geothermal drilling contractor based in Bermuda, rose by 10% to $6.8bn compared to $6.15bn in 2013.

Nabors provides drilling technology and equipment, offshore platform workover and drilling rigs, and comprehensive oilfield services across the world. It also provides directional drilling and measurement-while-drilling services.

Nabors provided drilling rig for the development of the Nikaitchuq oilfield and Oooguruk offshore oilfield near the North Slope of Alaska.


Petrofac - $6.2bn

British oilfield services company Petrofac witnessed a marginal drop in 2014 revenue down to $6.2bn from $6.3bn in 2013.

Petrofac offers well engineering design, field evaluation and management, well operations performance improvement and optimisation, and well integrity management. Offshore drilling services provided by the company include deepwater drilling, coiled tubing drilling, extended reach drilling, high pressure, high temperature (HPHT) drilling, hydraulic workover operations (HWU), and multi-lateral wells.

Petrofac was involved with the development of the West Don oil field in North Sea, Satah al-Razboot offshore oilfield in Abu Dhabi and the Bacchus oil field in Central North Sea.

Seadrill - $4.9bn

Seadrill provides rigs for drilling in shallow, deepwater and ultra-deepwater environments. The Bermudan company reported revenues of $4.9bn in 2014, as compared to $5.3bn in 2013.

Seadrill operates a fleet of 69 units comprising drillships, semi-submersibles, jack-ups and tender rigs that are capable of operating in shallow to ultra-deepwater areas.

The company was involved in the development of offshore oil fields including Victoria field in Norway, Erha Deepwater Development in Nigeria and Montara oil field in Timor Sea, Australia.

NRI Energy Technology