Resources

Types of Oil Drilling Rigs

o    An oil drilling rig is a structure that houses equipment such as the derrick, pipe, drill bits and cables necessary to extract petroleum from beneath the earth's surface. Oil drilling rigs can be either offshore for drilling into the ocean floor or land-based.

Jackups

o    According to Rigzone, the most often used offshore, movable drilling structures, called jackups, have bottom supports. The hull or main deck area is supported by columnar or open-truss legs. These units drill up to 350 feet deep.

Two types of drilling equipment are used on jackups. One, the most recent and the most used, is the cantilevered jackup, which has the drilling derrick mounted on an arm extending out from the main deck. These allow drilling to be done with or without platforms.

The other type, the slot-type or keyway jackup, has an opening in the drilling deck with a derrick positioned over it. This type of drilling unit can be jacked up over another smaller structure and drill down through its hull.

Floaters

o    Other offshore oil rigs, floaters, or semi-submersible drilling units float offshore on hollow columns or giant pontoons which when filled with water can submerge the rig to the required depth. This type of rig is normally used for drilling Wildcat Wells (new wells) and can withstand rough seas.

Fixed Platforms

o    More permanent offshore immobile steel or cement structures, called fixed platforms, house drilling rigs that open new development wells. These large units also house crew and equipment and are connected to the ocean floor. Most of these are found on continental shelves up to depths of 1,700 feet, and because of their directional drilling capacities can be attached to numerous wells up to a five-mile radius.

Complaint Towers

o    Another type of offshore drilling rig, the complaint tower, consists of a flexible, narrow tower supported by a piled foundation. Its conventional deck operates both drilling and production, and this sturdy unit sustains lateral forces and deflections in water from 1,500 to 3,000 feet depths.

Drillships

o    Drillships, usually built on tanker hulls, have been fitted with drilling devices and are used in deep water for experimental drilling. Dynamic positioning systems keep the ship over the well.

Types of Oil Rig Jobs

o    Oil rigs operate 24 hours a day, seven days a week, usually with three or four crews that operate the rig in shifts. Some oil rigs run on eight-hour shifts, others on 12-hour shifts. There are many different jobs be done on an oil rig, including technical drilling, management, mechanical maintenance, security as well as cleaning and catering for the crew.

Drill Crew

o    The drill crew usually is made up of five positions. "Roughnecks" work on the floor of the rig and in the mud room, operating machinery and maintaining equipment as necessary. Derrickmen are responsible for running mud-room equipment, including mud pumps and holding pits. Derrickmen are assisted by a pumpman, and both positions undertake roughneck duties as required. The assistant driller supervises the roughneck, pumpman and derrickman, and assists the driller, who is in charge of the drilling operation and who runs the equipment. The driller has a high level of responsibility and expertise. University education is not required, but technical training and experience is for drillers and drillers assistants. As of May 2010, roughnecks could expect to earn about $59,000 annually; pumpmen $60,500; derrickmen $65,000; assistant drillers $72,500 and drillers $86,000.

Deck Crews

o    The deck crews consist of five positions. Maintenance roustabouts perform general maintenance duties such as cleaning and painting the rig deck; as of May 2010 they could expect to earn about $47,000 annually in this entry-level job. The maintenance foreman is responsible for overseeing the work of the maintenance roustabouts and earns about $59,000. General roustabouts, distinct from maintenance roustabouts, help guide the deck crane and also help roughnecks on the rig floor when needed; they earn about $54,000. Assistant crane operators are typically experienced roustabouts who have the qualifications to operate cranes, earning $59,000. The crane operator has the main task on deck of operating the crane and of supervising the deck crew. The crane operator earns about $69,500.

Security

o    Since a large number of the world's gas and oil reserves are offshore in unstable regions such as the Middle East, Africa and South America, security is a concern aboard oil rigs. Most security guards aboard oil rigs are employees of specialized firms and many are ex-servicemen with significant expertise in security issues. Technology plays a large part in oil rig security, including the use of radar sensors to detect incoming vessels. While the mean annual wage for a conventional security guard in 2009 was $26,430, according to the Bureau of Labor Statistics, security personnel in the energy sector had a mean annual wage of $64,610.

List of Names for Oil Rig Jobs

o    Oil rigs are large industrial structures with a wide variety of different jobs, ranging from those that drill for oil and handle the equipment to those who support the operations of the oil rig and take care of the other workers. These jobs suit a wide variety of vocational skill sets, though they all require living on or near an oil rig for extended periods of time.

Roustabout

o    Roustabouts work with heavy machinery on the deck of the oil rig, moving crane loads and supplying equipment to the rig's floor. They are also responsible for keeping the main deck areas clean and tidy. When times are very busy, roustabouts also assist roughnecks. Roustabouts make over $50,000 per year on most rigs.

Roughnecks

o    Roughnecks work on the drilling floor in teams of three and are the main people responsible for operating the equipment, repairing it and making sure it is working efficiently. They are directed to do different things on the floor by the driller and are also responsible for checking the mud levels on the drill itself by checking with the Mudman on a regular basis. Roughnecks make about $60,000 per year, on average.

Driller

o    Drillers are the highest position on the drilling floor and are the generals of how the equipment operations are done. They are also in charge of everything that is happening on and above the rig floor. The driller is the person who actually operates the drilling rig equipment and makes a hole in the sea bed to try and find the oil. Drillers make over $80,000 per year on average.

Company Man/Woman

o    The Company Man or Woman is the oil company's representative who lives and works on board the oil rig. They are not employed by the drilling company who is operating the rig, but by the oil company funding the operation. Their responsibility is to monitor what is occurring on board and report back to the oil company to make sure everything is running smoothly. A Company Man or Woman makes upwards of $150,000 per year.

CRO's

o    CRO's are control room operators who monitor the controls, electricity and general operations are working on board. They monitor weather in the area and make sure the rig's basic systems, like electricity and plumbing, are operating correctly. They have a number of assistants who are all seasoned seamen and know how to work and live on the open ocean. CRO's make around $65,000 per year; their assistants make just under $60,000 per year.

Jobs in an Oil Drilling Company

An oil company is in business to extract oil and sell it on the world market. Most of the time, this means drilling. The largest oil companies, commonly referred to as "Big Oil," usually do not own the drilling rigs used to find and extract oil. They lease the rigs from companies that do nothing but move from location to location and drill wells for the companies that hire them. Most of the jobs available in the oil field are with the drilling companies.

1.   Drill Crew (Labor)

o    Operational jobs on a rig are directly related to drilling the well. Once a new hire is trained in rig operations and safety, he can become a roughneck. The roughneck works to connect new sections of drill pipe to the section already in the hole. This process is repeated as the drill bit, or tool, is pushed further into the well. The roughneck also performs preventative maintenance on rig equipment and mixes the chemicals for the drilling fluid that lubricates the bit as it is pushed through the well.

Roughnecks can be promoted to other positions on the drill crew, such as motorman or derrickman. The motorman, as the name implies, is responsible for the motor that drives the drill. On an oil rig, time is money, so any delay or malfunction can quickly cost the company tens of thousands of dollars or more. Therefore, the motorman's job in keeping the motor in top shape is crucial to the rig's operations.

The derrickman is responsible for everything in the truss work, or derrick, seen on most drilling rigs. The derrickman climbs to the top of the derrick and helps guide new sections of pipe into position so the roughnecks on the rig floor can connect them. Fear of heights is not an attribute for a derrickman to have. The derrickman is also responsible for preventative maintenance on all the equipment in the derrick.

2.   Drill Crew (Supervisory)

o    The assistant driller is the first-level supervisory job. He supervises all the roughnecks and works directly with the driller to ensure smooth operation of the well.

The upper supervisory positions are the driller and the rig supervisor. The driller operates the drill motor and acts as the primary on-scene decision-maker on the rig floor. He directs the actions of the assistant driller, motorman, derrickman and roughnecks to ensure smooth rig operations. He also determines the speed and pressure of the drill bit, which determines how fast the tool gets pushed into the hole.

The rig supervisor, once known as the "toolpusher," is the top of the heap in rig operations. He is responsible for all rig service, maintenance and operations.

If ExxonMobil leases a rig from TransOcean, ExxonMobil would naturally want to have its own man on the rig. This individual is called the company man. He works directly with the rig supervisor to ensure the well meets the company's expectations. The company man is therefore the final authority on rig site except on some off-shore rigs where an installation manager, who acts as captain of the ship, can overrule the company man on issues of safety.

3.   Rig Service (Deck Crew)

o    Operational jobs are very similar, whether the rig is land-based or offshore. Rig service jobs have similarities between land-based and offshore rigs, but there are some noticeable differences. The first major difference is that "rig service" is called "deck crew" on an offshore rig.

A roustabout is an unskilled laborer who is responsible for just about everything not related to drill operations. Jobs such as painting stairs and unloading trucks fall under the responsibility of a roustabout. On offshore rigs, the roustabout's main duty is to guide the crane operators as they move heavy equipment, pipe and cargo containers.

An operator supervises a team of roustabouts. He is also trained in the operation of hoisting equipment such as cranes and wenches. On an offshore rig, the crane operators are vital to the rig. They operate heavy-lift cranes to transfer cargo, and sometimes personnel, back and forth between the rig and its supply ships.

4.   Specialists

o    Drilling rigs have several specialists. Some work on a full-time basis, while others are only present when their services are needed.

The mud engineer ensures the drilling fluid meets the specifications called for by the rig supervisor and the company man. The chemical makeup and density of the drilling fluid is varied depending on well conditions.

Various forms of cement are used at different times in the well. Like the mud engineer, the cementer is responsible for ensuring the cement meets the specifications called for by the rig supervisor and the company man.

A geologist is on hand to examine all the available data from the well to help drillers know what to expect. They also examine data to determine the progress of the potential for reaching oil.

Many offshore rigs also have a division called subsea, which operates a small unmanned submarine to inspect all the underwater portions of the rig, especially where the drill pipe enters the seafloor.

5.   Support

o    A crew has to eat. Catering services are sometimes a part of the service crew for an oil rig, but sometimes catering services are contracted out.

Depending on the size of the rig site, roustabouts might be responsible for keeping things clean. On offshore rigs, housecleaning services are required for the living quarters as a deck crew or drill crew can be living on the rig for a month or more at a time.

6.   Safety

o    Safety is the responsibility of everyone from the roustabout to the rig supervisor, but each rig has a dedicated safety officer. The safety officer runs the rig's safety programs, conducts safety meetings and safety reviews, and routinely inspects the rig for safety issues.

In the list of petroleum companies and oil exploration industry below you can find information about locations where the oil fields are operating and drilling programs for oil & gas wells:

Aera Energy LLC – oil and gas producer Bakersfield, USA, America(North)

Afren plc – independent oil and gas exploration, development and production company
London, UK, Europe(North)

AGIP Petroli SpA – operates in the refining and marketing of petroleum products
Rome, Italy, Europe(South)

Aker Floating Production – own, operate, and charter out converted tankers equipped for offshore oil and gas production and storage Oslo, Norway, Europe(North)

Aminex plc – experienced, independent, oil and gas company London, UK, Europe(North)

Anadarko Petroleum – one of the largest independent crude oil and natural gas exploration and production companies Houston, USA, America(North)

Antrim Energy inc – an oil and gas exploration and production company Calgary, CANADA, America(North)

Anzon Australia Limited – upstream oil and gas company formed to acquire, develop and commercialise defined oil and gas fields Sydney, Australia, Australia

Arc Energy – petroleum production and exploration company Perth, Australia, Australia

Atlantic Petroleum – oil and gas exploration company Tórshavn, Faroe Islands, Europe(North)

ATP Oil and Gas Corporation – develop already-discovered offshore petroleum reserves
Houston, USA, America(North)

Australian Worldwide Exploration Ltd – Australian oil and gas exploration and production company Sydney, Australia, Australia

Azerbaijan International Operating Company (AIOC) – a consortium of 10 major international oil companies and SOCAR, is developing the Azeri, Chirag and deep-water portion of Gunashli fields Baku, Azerbaijan, Middle East

Bass Strait Oil Company – exploration and production activities Melbourne, Australia, Australia

Beach Petroleum – oil and gas Exploration and Production Company Glenside, Australia, Australia

BG Norge – engaged in exploration for and production, transmission, distribution and supply of natural gas Stavanger, Norway, Europe(North)

Bharat Petroleum – Refining, Storing, Marketing and distributing petroleum products
Mumbai, India, Asia

BHP Billiton – an international oil and gas exploration and production company in australia Melbourne, AUSTRALIA, Australia

Blue Dolphin Energy Company – pipeline and oil gas exploration services Houston, USA, America(North)

Bow Valley Energy Ltd. – is leveraging its knowledge of the international oil and natural gas industry to identify and exploit niche opportunities Calgary, Canada, America(North)

Bowleven – African focused oil and gas company Edinburgh, UK, Europe(North)

BP Norge AS – Holds 15 licences and is operator of 11. Operatorships include the Valhall/Hod and Ula/Tambar fields. Stavanger, Norway, Europe(North)

BPZ Energy – is an oil and gas exploration and production company which has exclusive license contracts for oil and gas exploration and production Houston, USA, merica(North)

BW Offshore AS – world’s leading FPSO contractors and a market leader within dvanced offshore loading and production systems Oslo, Norway, America(North)

Cabinda Gulf Oil Company Ltd, CABGOC – Luanda, ANGOLA, Africa

Cabot Oil and Gas – natural gas producer and marketer Houston, USA, America(North)

Cairn Energy PLC – oil and gas exploration and production company based in Edinburgh, Scotland Edinburgh, SCOTLAND, Europe(North)

Cairn India – largest producing oil field in the Indian private sector Gurgaon, India, Asia

Callon Petroleum Company – engaged in the exploration, development, acquisition and operation of oil and gas properties Houston, USA, America(North)

Caltex – is the largest refiner and marketer of petroleum products in Australia Sydney, Australia, Australia

Canadian Natural Resources – oil and natural gas production canada Calgary, CANADA, America(North)

Carrizo Oil and Gas – independent energy company engaged in the exploration, development and production of natural gas and oil Houston, USA, America(North)

Centrica plc – upstream gas production and exploration Windsor, UK, Europe(North)

Cheetah Oil & Gas Ltd – is an exploration stage oil and gas company engaged in exploring for petroleum and natural gas Port Moresby, Guinea, Asia

Chevron Upstream Europe – one of the world’s leading integrated energy companies, with subsidiaries that conduct business worldwide Aberdeen, UK, Europe(North)

ChevronTexaco – among the world’s largest global energy companies San Francisco, USA, America(North)

CHINA Petroleum Technology & Development Corp – China’s largest professional foreign trade company for petroleum and petrochemical materials, equipment and technologies Beijing, China, Asia

Chornmornaftogas NSC – searching, exploration drilling, construction of fixed platforms and underwater pipelines, development and exploitation of oil and gas fields Simferopol, Ukraine, Europe(North)

Circle Oil Plc – is an oil and gas exploration, development and production company with an attractive portfolio of assets in Morocco, Namibia, Oman, Panama and Tunisia Limerick, Ireland, Europe(North)

CNOOC – China National Offshore Oil Corporation – China National Offshore Oil Corporation – CNOOC Beijing, CHINA, Asia

CNPC – The China National Petroleum Corporation Beijing, CHINA, Asia

Cobalt International Energy – a private oil and gas exploration and production company focusing on the deepwater of the Gulf of Mexico and West Africa. Houston, USA, America(North)

Conoco Inc – integrated oil company explores for oil and gas production Houston, USA, America(North)

Cosmo Oil – product range for the petrochemical business Tokyo, Japan, Asia

Dana Petroleum – ten North Sea fields in production Aberdeen, SCOTLAND, Europe(North)

Desire Petroleum Plc – explore and identify commercial hydrocarbon reserves London, UK, Europe(North)

Devon Energy – independent oil and gas exploration services and producer Oklahoma City, USA, America(North)

Discover Petroleum – unique exploration technology that will transform hydrocarbon exploration Tromsø, Norway, Europe(North)

DONG – danish oil and gas exploration services company Hørsholm, DENMARK, Europe(North)

Dragon Oil – is an independent oil development and production company Dubai, UAE, Middle East

Ecopetrol, S.A. – carries out hydrocarbon exploration activities Bogota, Columbia, America(South)

EGAS – Egyptian Natural Gas Holding Company – handle the activities of the natural gas resources of Egypt Cairo, EGYPT, Middle East

ENAP – exploration and production activities for crude oil and natural gas and the refining and logistics of fuels and other petroleum by products Santiago, Chile, America(South)

Encana – one of North America’s largest independent gas and oil exploration producers
Calgary, CANADA, America(North)

EnCore Oil plc – is an oil and gas exploration and production (E&P) company
London, UK, Europe(North)

EnerGulf Resources Inc – international oil and gas exploration and production company
Houston, USA, America(North)

Eni SpA – integrated energy production company Rome, ITALY, Europe(South)

Enterprise Oil plc – a crude oil and natural gas exploration and production operator company London, UK, Europe(North)

EOG Resources, Inc. – independent (non-integrated) oil and natural gas companies in the United States Houston, USA, America(North)

Ernst & Young LLP – financing international exploration, acquisition structuring, transfer pricing, or tax compliance, the energy, St John, Canada, America(North)

Essar Oil – operates a fully integrated oil company of international size and scale in India.
Mumbai, India, Asia

Falkland Oil and Gas – survey and hydrocarbon exploration London, UK, Europe(North)

Famfa Oil Limited – Nigerian oil and gas exploration and production company Lagos, Nigeria, Africa

Forest Oil Corporation – exploration, acquisition, development, production and marketing of natural gas and crude oil Denver, USA, America(North)

Fred. Olsen Production – Floating Production, Storage and Offloading (FPSO) and Floating Storage and Offloading (FSO) units Oslo, Norway, Europe(North)

Frontier Drilling AS – an independent supplier of drilling and production services for the oil industry Bergen, NORWAY, Europe(North)

Galp Energia, SGPS, S.A. – Oil Petroleum, Natural Gas Supply, Regasification, Transport, Storage and Distribution portugal Lisboa , PORTUGAL, Europe(South)

Gas de France – one of the leading European gas groups Paris, FRANCE, Europe(North)

Gazflot – russian exploration and ship owning company Moscow, RUSSIA, Europe(North)

Gazprombank – services to enterprises and employees of other sectors (chemical, engineering, defence, nuclear etc.) Moscow, Russia, Europe(North)

GeoPardazesh – one of the Iranian’s leading Geophysics and Geology Exploration Services Groups Ahwaz, Iran, Middle East

GSPC Gujarat State Petroleum Corporation – vertically integrated energy company across India and overseas Gandhinagar, India, Asia

Heritage Oil Corporation – independent, international oil and gas exploration, development and production company Calgary, Canada, America(North)

Hindustan Petroleum – major integrated oil refining and marketing companies in India
Mumbai, India, Asia

Holloman Energy Corp – is an emerging international exploration, development and production independent Houston, USA, America(North)

Hunting PLC – leading suppliers of Well Construction and Well Completion equipment
London, UK, Europe(North)

Hyperdynamics – energy for the future by exploring for new sources of oil and gas both domestically and internationally Sugar Land, USA, America(North)

Iceland Oil – oil gas exploration company in Iceland Reykjavik, ICELAND, urope(North)

Indian Oil Corp – major diversified, transnational, integrated energy company New Delhi, India, Asia

Inpex Corporation – oil gas exploration in japan Tokyo, JAPAN, Asia

Ithaca Energy Inc. – is a Canadian oil and gas exploration and development company
Calgary, Canada, America(North)

JSC Gazprom Neft – is one of the largest oil and gas producing companies in Russia
Moscow, Russia, Europe(North)

KOGAS Korea Gas Corporation – participating in international projects through equity participation in overseas LNG projects Gyeonggi-do, Korea, Asia

Larsen Oil and Gas – international drilling and production contractor Aberdeen, UK, Europe(North)

Lukoil – is Russia’s leading oil company Moscow, RUSSIA, Europe(North)

Maersk FPSOs – Floating Production, Storage and Offloading vessels Copenhagen, Denmark, Europe(North)

Maersk Oil – a midsize international oil and gas company Copenhagen, Denmark, Europe(North)

Maine Oil & Gas Corporation – is an emerging, integrated oil and gas company focused on the acquisition of and development of assets in the gulf of guinea Houston, USA, America(North)

Marathon Oil Company – worldwide exploration and production of crude oil and natural gas Houston, USA, America(North)

MEO Australia – company focused on developing large gas projects Melbourne, Australia, Australia

Murphy Oil Corporation – oil and gas exploration and production El Dorado, USA, America(North)

National Iranian Oil Company – exploration, development, production, marketing of crude oil and natural gas. Tehran, Iran, Middle East

Neste Oil – owns and operates two oil refineries in Finland Espoo, Finland, Europe(North)

New Zealand Oil & Gas Ltd – independent, Wellington-based exploration and production company Wellington, New Zealand, Australia

Newfield Exploration Company – is an independent crude oil and natural gas exploration and production company Houston, USA, America(North)

Nexus Energy – is a Melbourne based, Australian Stock Exchange listed oil and gas company Melbourne, Australia, Australia

Nexus Floating Production Ltd – supplier of high quality harsh environment FPSOs
Singapore, Singapore, Asia

Nigeria Liquefied Natural Gas Limited (NLNG) – joint venture LNG company, largest shareholder is Nigerian National Petroleum Corporation Lagos, NIGERIA, Africa

Nigerian National Petroleum Corporation NNOC – commercial international corporation
Garki, NIGERIA, Africa

Norsk Hydro – an industrial company based on the use of oil, natural gas, LNG resources
Oslo, NORWAY, Europe(North)

Northern Petroleum Plc – an oil and gas exploration, development and production company London, UK, Europe(North)

Nunaoil – Nunaoil is the National Oil Company of Greenland Nuuk, Greenland, Greenland

Occidental Petroleum Corporation – oil and natural gas exploration and production
Los Angeles, USA, America(North)

Ocean Power Technologies (OPT) – leading renewable energy company specializing in offshore wave power technology New Jersey, USA, America(North)

OGDCL – Oil & Gas Development Company Ltd – leading, regional Pakistani E & P Company Islamabad, PAKISTAN, Asia

Oil Search – is an oil and gas exploration and development company Port Moresby, Papua New Guinea, Asia

Oilex Ltd – independent oil and gas exploration and production company Perth, Australia, Australia

Oilexco Inc – exploration and production company Calgary, CANADA, America(North)

OMV Exploration & Production GmbH – austrian oil gas exploration companies
Wien, AUSTRIA, Europe(North)

Origin Energy – holds significant producing assets; operates onshore processing facilities; and holds a portfolio of onshore and offshore exploration permits Milton, Australia, Australia

Otto Energy – dynamic, rapidly growing oil and gas company Perth, Australia, Australia

Pars Oil & Gas Company (POGC), – a subsidiary of National Iranian Oil Company (NIOC Tehran, Iran, Middle East

PDVSA – Petroleos de Venezuela SA/CITGO – is responsible for the efficient, profitable, and dependable exploration, production, refining, transport and commerce of hydrocarbons. Caracas, VENEZUELA, America(South)

PEMEX (Petroleos Mexicanos) – develops all the productive chain of the industry, upstream, downstream and final product commercialization Mexico City, Mexico, America(North)

Pertamina – state-owned oil and gas company Jakarta, INDONESIA, Asia

Petoro AS – create lasting value from oil and gas through commercial operations
Stavanger, Norway, Europe(North)

Petro Artic – Supplier network for petroleum projects in the far north Hammerfest, Norway, Europe(North)

Petro Kazakhstan – vertically, integrated, international energy company Calgary, Canada, America(North)

Petrobaltic – exploration and extraction of oil and gas from the offshore deposits in Poland Gdansk, Poland, Europe(North)

Petrobank Energy and Resources Ltd – Combines Canadian oil and gas operations with two CBM opportunities and 38 400 acres of oil sand leases Calgary, Canada, America(North)

PetroChina – is the largest oil/gas producer and distributor, playing a dominant role in the oil and gas industry in China Beijing, CHINA, Asia

Petroliam Nasional Berhad (PETRONAS) – is Malaysia’s national petroleum corporation
Kuala Lumpur, MALAYSIA, Asia

Petronas – is Malaysia’s national petroleum Kuala Lumpur, MALAYSIA, Asia

PetroSA – exploring, producing, refining and marketing petroleum oil, gas and petrochemicals PAROW, South Africa, Africa

Petrovietnam – operations from oil and gas exploration and production Hanoi, Vietnam, Asia

Petsec Energy – ncreasing oil and gas reserves through successful oil and gas exploration and acquisitions. Sydney, AUSTRALIA, Australia

Phillips Petroleum Company – exploration and production; gas gathering, processing and marketing Bartlesville, USA, America(North)

Pioneer Natural Resources Company – independent oil and natural gas exploration and production company Irving, USA, America(North) Premier Oil plc – independent oil and gas company London, UK, Europe(North)

Providence Resources Plc – international upstream oil and gas company Dublin, Ireland, Europe(North)

PTT Exploration and Production – a national petroleum exploration and production company Bangkok, Thailand, Asia

Queiroz Galvao – exploration and production drilling rigs and FPSO Rio de Janeiro, Brazil, America(South)

Ramco Energy plc – has exploration assets in Ireland and Montenegro and is currently evaluating other frontier exploration and oil services deals Aberdeen, SCOTLAND, Europe(North)

Reliance Industries Limited. – activities span exploration and production of oil and gas, petroleum refining and marketing, petrochemicals Ballard Estate, INDIA, Asia

Repsol YPF SA – integrated international oil and gas exploration and production company Madrid, SPAIN, Europe(South)

Roc Oil Company Limited – is one of Australia’s leading independent oil and gas companies Sydney, AUSTRALIA, Australia

Rockhopper Exploration PLC – explore for oil and gas in the Falkland Islands Salisbury, UK, Europe(North)

Rocksource ASA – oil and gas exploration services Oslo, NORWAY, Europe(North)

Rosneft – russian oil and gas exploration company Moscow, RUSSIA, Europe(North)

RWE Dea AG – conducts international exploration for natural gas and crude oil
Hamburg, Germany, Europe(North)

Sakhalin Energy – commercially develop, operate and market the hydrocarbon resources
Yuzhno-Sakhalinsk, Russia, Europe(North)

Salamander Energy – is an Asia-focused independent exploration and production company London, UK, Europe(North)

Santos Ltd – is a major Australian oil and gas exploration and production company
Adelaide, Australia, Australia

Saudi Aramco – ully integrated international petroleum company with the world’s largest oil reserves. Dhahran, SAUDI ARABIA, Middle East

Sea Production Ltd – develops quality Floating Production Storage and Offloading (FPSO) and Floating Storage and Offloading (FSO) units Lysaker, Norway, Europe(North)

Sevan Marine – specializing in building, owning and operating floating units for offshore applications Tananger, NORWAY, Europe(North)

Sevmorneftegaz, CJSC – Development of oil and gas fields on Russia’s Arctic continental shelf Moscow, Russia, Europe(North)

Shell Technology Ventures, Inc. – developing new technologies that increase productivity, maximize efficiency, and promote sustainable development. Houston, USA, America(North)

Sibneft – petroleum exploration, production, refining, and marketing Moscow, RUSSIA, Europe(North)

Single Buoy Moorings Inc. – FPSO, floating production storage and offloading, FSO, floating storage and offloading, Marly, SWITZERLAND, Europe(North)

Sinvest ASA – long-term financial and strategic investor in oil- and offshore companies.
Kristiansand, NORWAY, Europe(North)

SOCAR – State Oil Company of Azerbaijan – is the government-owned entity responsible for all aspects of exploration and development related to oil and gas fields both onshore and offshore for the Republic of Azerbaijan Baku, Azerbaijan, Middle East

Spinnaker Exploration Company – independent energy production company Houston, USA, America(North)

Strat Petroleum Ltd – oil and natural gas exploration company New York, USA, America(North)

Sunoco – gas stations, crude oil production and petroleum products Philadelphia, USA, America(North)

Teekay Petrojarl – owns and operates four FPSOs in UK and Norwegian waters
Trondheim, Norway, Europe(North)

Teikoku Oil – japan oil and gas exploration, production and pipeline Tokyo, JAPAN, Asia

Texaco – finds and produces LNG, crude oil and natural gas San Francisco, USA, America(North)

ThaiOil – modern processing technologies to produce petroleum products Bangkok, Thailand, Asia

The Korea National Oil Corporation – recognized national oil corporation
Dongan-gu Anyang-si, Korea, Asia

Tullow Oil – independant oil and gas production London, UK, Europe(North)

Unocal Corporation – oil and natural gas production and exploration development company El Segundo, USA, America(North)

Venture Production plc – oil and gas company focused on recapturing the potential of stranded reserves Aberdeen, SCOTLAND, Europe(North)

Vietsovpetro JVC – infrastructure and technical system that serve development of petroleum industry Vung Tau City, Vietnam, Asia

WHAM Energy Plc – exploration for and development of oil and gas resources London, UK, Europe(North)

Wintershall – actively involved in the exploration and production of crude oil and natural gas Kassel, Germany, Europe(North)

Woburn Energy Plc – is engaged in oil and gas exploration. London, UK, Europe(North)

Aban Offshore Oil Company
Abu Dhabi National Oil Company (ADNOC), United Arab Emirates
Agip Petroli S.p.A
AinMine Petroleum
Aker Geo AS, Norway
Alon USA, Dallas, Texas, United States of America
American Eagle Oilfield Services & Supplies, Inc., Katy, Texas, United States of America; Independent
Anadarko Petroleum Corporation, The Woodlands, Texas, United States of America; Independent
ANCAP, Uruguay
Apache Corporation, Houston, Texas, United States of America; Independent
Arabian Gulf Oil Company (AGOCO), Libya
Arbusto Energy, dba: Spectrum 7, United States of America, Saudi Arabian, and possibly Swiss ownership. Bought out by Harken Oil & Gas in 1986
Assam Oil Company Ltd. (ACL), India
Atlantic Petroleum, Faroe Islands
Athlone Group, United Kingdom
Bharat Petroleum Corporation Limited, India
BG Group, United Kingdom
BHP Billiton, Australia
British Petroleum (BP), United Kingdom
Cairn Energy, United Kingdom
Canadian Natural Resources, Canada
Chevron Corporation, San Ramon, California, United States of America
Chem-Energy Corporation, United States of America
Chestnut Petroleum, Inc., Richardson, Texas, United States of America
Chief Oil and Gas, Dallas, Texas, United States of America
Citgo, Venezuela
CNOOC Ltd., China
ConocoPhillips, United States of America
Cooper Energy, Australia
Cosmo Oil Company, Japan
Crown Central Petroleum, United States of America
Cupet, Cuba
Denbury Resources, Inc., United States of America
Det Norske Oljeselskap ASA, Norway
Devon Energy, United States of America
Dong, Denmark
Ecopetrol, Colombia
Edoardo Raffinerie Garrone, Italy
Empresa Nacional del Petróleo (ENAP), Chile
Enbridge, Canada
EnCana, Canada
Energi Mega Persada, Indonesia
Energopetrol, Bosnia
ENSCO International, United States of America
Eni, Italy
ENX, Switzerland
ENXRU, Russia
Essar oil ltd., India
Entreprise Tunisienne d’Activites Petroliere (ETAP), Tunisia
Eser Corporation, United States of America
ExxonMobil, United States of America
First Texas Energy Corporation, United States of America
Finnburg Switzer, United Kingdom
Galp Energia, Portugal
Gazprom, Russia
Geoexploration india, IN, India
Global Energy Swiss AG, ZUG, Swizterland
Greka Energy, United States of America
Grupa LOTOS, Poland
Gujarat Gas Co. Ltd., India
Gujarat State Petroleum Corporation, India
Gulf Oil, Luxembourg
Harken Energy Corporation, dba: HKN Southlake, Texas, United States of America of America
Hellenic Petroleum, Greece
Hess Corporation, United States of America
Hindustan Petroleum Corporation Ltd, India
Husky Energy, Canada
IB Daiwa, Japan
Imperial Oil, Canada
INA – Industrija Nafte, Croatia
Indian Oil Corporation, India
Inpex, Japan
Irkutsk Oil Company, Russia
Irving Oil, Canada
IQ Petroleum, USA
Japan Energy, Japan
Japan Petroleum Exploration Company Limited (JAPEX), Japan
Jay Oil, Iran
Kaz-Munay Gaz, Kazakhstan
Karazhanbas Munay, Kazakhstan
Korea National Oil Corporation(KNOC), South Korea
Koch Industries, United States of America
Kuwait German Petroleum Company, Canada
Kuwait Gulf Oil Company, Kuwait
Kuwait National Petroleum Company Kuwait.
Kuwait Oil Company, Kuwait
Kuwait Petroleum Corporation, Kuwait
Leowit Group Ltd, Hong Kong
LUKoil, Russia
M3nergy Gamma SDN. BHD., Malaysia
Maersk, Denmark
Marathon Oil Corporation, United States of America
Maurel & Prom, France
Mari Gas Company Limited, Pakistan
Maxol Group, Republic of Ireland
MedcoEnergi, Indonesia
Misc, Malaysia
MOL Group, Hungary
Naftna Industrija Srbije, Serbia
Naftogas of Ukraine, Ukraine
National Iranian Oil Company (NIOC), Iran
National Oil Corporation, Libya
Neste Oil, Finland
Nexen, Canada
Nippon Oil, Japan
NNPC, Nigeria
Oil and Gas Development Company Limited[1], Pakistan
Occidental Petroleum, United States of America
Oil India Limited, India
Oman Oil Company (OOC), Oman
OMV, Austria
ONGC, India
PKN Orlen S.A., Poland
Pacific Rubiales Energy, Canada
PSO, Pakistan
Pakistan Petroleum Pakistan
Pasargad Oil, Iran
Pertamina, Indonesia
Petróleos Mexicanos, Mexico
Petróleos de Venezuela, Venezuela
PetroAlam, Egypt
Petroleum Development Oman,(PDO)
Perenco, France, United Kingdom
Petro-Canada, Canada
Petrobras, Brazil
PetroChina, China
Petroecuador, Ecuador
PetroKazakhstan, Kazakhstan
Petrom, Romania
Petron Corporation, Philippines
PETRONAS, Malaysia
Petronet LNG Limited, India
Petropars Ltd., Iran
Petroperu, Peru
PETROTRIN, Trinidad and Tobago
PetroVietnam, Vietnam
Polish Oil and Gas Company, Poland
Plains Exploration & Production Company (PXP), United States of America
PTT Public Company Limited, Thailand
Qatar Petroleum, Qatar
Questar, United States of America
Reliance Industries Limited, India
Repsol YPF, Spain
Revus, Norway
Rompetrol, Romania
Rosneft, Russia
Royal Dutch Shell, Netherlands, United Kingdom
Russneft, Russia
RWE Dea AG, Germany
Sagiz Petroleum, Kazakhstan
Samir (Société Anonyme Marocaine de l’Industrie du Raffinage), Morocco
San-Ai Oil, Japan
Santos Limited, Australia
Sasol, South Africa
Saudi Aramco, Saudi Arabia (the largest in the world)
Shell Canada, Canada (subsidiary of Royal Dutch Shell)
Shell Oil Company, United States of America (subsidiary of Royal Dutch Shell)
Sinclair Oil, United States of America
Sinopec, China
Snpc, Congo-Brazzaville
Sonangol, Angola
Sonatrach, Algeria
Sovereign Group, USA, Russia
Singapore Petroleum Company, Singapore
Statoil, Norway
State Oil Company of Azerbaijan, SOCAR Azerbaijan
Somerset Refinery, United States of America
St. Mary Land & Exploration, United States of America
State Oil Company of Suriname, Suriname
Suncor Energy, Canada
Surgutneftegaz, Russia
Syncrude, Canada
Talisman Energy, Canada
Tesoro, United States of America
Texaco, United States of America
THUMS, United States of America
Todd Energy, New Zealand
Total S.A., France
Tullow Oil, United Kingdom
Türkiye Petrolleri Anonim Ortaklığı (TPAO), Turkey
United Refining Company, United States of America
Ucimet Ltd, UK
Vaalco Energy Inc., United States of America
Valero Energy Corporation, United States of America
Vegas Oil and Gas (Kriti), Egypt
Venoco Inc., United States of America
Wintershall, Germany
Woodside Petroleum, Australia
XTO Energy, United States of America
YPF, Argentina
YPFB, Bolivia
Zorro Oil, Jember

Ghawar Field location in Saudi Arabia
Burgan Field location in Kuwait
Ferdows/Mound/Zagheh Field location in Iran
Sugar Loaf field location in Brazil
Cantarell Field location in Mexico
Bolivar Coastal Field location in Venezuela
Azadegan field location in Iran
Tupi Field location in Santos Basin, Brazil
Safaniya-Khafji Field location in Saudi Arabia/Neutral Zone
Esfandiar Field location in Iran
Rumaila Field location in Iraq
Tengiz Field location in Kazakhstan
Ahwaz Field location in Iran
Kirkuk Field location in Iraq
Shaybah Field location in Saudi Arabia
Agha Jari Field location in Iran
Majnoon Field location in Iraq
Samotlor Field location in West Siberia, Russia
Romashkino Field location in Volga-Ural, Russia
Prudhoe Bay location in United States, Alaska
Serir Field location in Libya
Priobskoye field location in West Siberia, Russia
Lyantorskoye field location in West Siberia, Russia
Abqaiq Field location in Saudi Arabia
Chicontepec Field location in Mexico
Berri Field location in Saudi Arabia
Zakum Field location in Abu Dhabi, UAE
West Qurna Field location in Iraq
Manifa Field location in Saudi Arabia
Fyodorovskoye Field location in West Siberia, Russia
East Baghdad Field location in Iraq
Faroozan-Marjan Field location in Saudi Arabia/Iran
Marlim Field location in Campos Basin, Brazil
Awali location in Bahrain
Aghajari Field location in Iran
Ahvaz Field location in Iran
Azadegan Field location in Iran
Gachsaran Field location in Iran
Marun Field location in Iran
Mesopotamian Foredeep Basin location in Kuwait
Minagish location in Kuwait
Raudhatain location in Kuwait
Sabriya location in Kuwait
Yibal location in Oman
Dukhan Field location in Qatar
Halfaya Field location in Iraq
Az Zubayr Field location in Iraq
Nahr Umr Field location in Iraq
Abu-Sa’fah field location in Oman
Hassi Messaoud location in Algeria
Kizomba Complex location in Angola
Dalia (oil field) location in Angola
Belayim location in Angola
Zafiro location in Angola
Serir field location in Libya
Zelten oil field location in Libya
Agbami Field location in Nigeria
Bonga Field location in Nigeria
Azeri-Chirag-Guneshli location in Azerbaijan
Shah Deniz location in Azerbaijan
Karachaganak Field location in Kazakhstan
Kashagan Field location in Kazakhstan
Bombay High location in India
Mangala Area location in India
Toot oilfield location in Pakistan
Kurmangazy Field location in Kazakhstan
Darkhan Field location in Kazakhstan
Zhanazhol Field location in Kazakhstan
Uzen Field location in Kazakhstan
Kalamkas Field location in Kazakhstan
Zhetybay Field location in Kazakhstan
Nursultan Field location in Kazakhstan
Ekofisk oil field location in Norway
Troll Vest location in Norway
Statfjord location in Norway
Gullfaks location in Norway
Oseberg location in Norway
Snorre location in Norway
Mamontovskoye Field location in Russia
Russkoye Field location in Russia
Kamennoe Field location in Russia
Vankor Field location in Russia
Vatyeganskoye Field location in Russia
Tevlinsko-Russkinskoye Field location in Russia
Sutorminskoye Field location in Russia
Urengoy group location in Russia
Ust-Balykskoe Field location in Russia
Tuymazinskoe Field] location in Russia
Arlanskoye Field location in Russia
South-Hilchuy Field location in Russia
North-Dolginskoye Field location in Russia
Nizhne-Chutinskoe Field location in Russia
South-Dolginskoye Field location in Russia
Prirazlomnoye Field location in Russia
West-Matveevskoye Field location in Russia
Sakhalin Islands location in Russia
Odoptu location in Russia
Arukutun-Dagi location in Russia
Piltun-Astokhskoye Field location in Russia
Ayash Field East-Odoptu Field location in Russia
Verhne-Chonskoye Field location in Russia
Talakan Field location in Russia
North-Caucasus Basin location in Russia
Clair oilfield location in United Kingdom
Forties oilfield location in United Kingdom
Tupi (oil field) location in Brazil
Jupiter field location in Brazil
Cupiagua/Cusiana location in Colombia
Boscán Field, Venezuela location in Venezuela
Hibernia location in Canada
Terra Nova Field location in Canada
SACROC location in United States
Yates Oil Field location in United States
Kuparuk oil field location in United States
Alpine location in United States
East Texas Oil Field location in United States
Spraberry Trend location in United States
Wilmington Oil Field location in United States
South Belridge Oil Field location in United States
Coalinga Oil Field location in United States
Elk Hills location in United States
Kern River location in United States
Midway-Sunset Field location in United States
Thunder Horse Field location in United States
Kingfish location in Australia
Halibut location in Australia
Daqing Field location in China
Jidong Field location in China
Tahe Field location in China
Nanpu Oil Field location in China

ADNOC – Abu Dhabi National Oil Company – state owned oil gas exploration company Contact: , Phone: (+971) 26 02 00 00, Fax: (+971) 26 02 33 89 Abu Dhabi, UAE, Middle East www.adnoc.com

BG Group plc – exploration and production, liquefied natural gas, transmission and distribution Contact: , Phone: +44 (0) 118 935 3222, Fax: +44 (0) 118 935 3484
Berkshire, UK, Europe(North) www.bg-group.com

BP – a leading provider of oil and natural gas exploration and production
Contact: , Phone: (+4412) 24 83 20 00, Fax: Aberdeen, SCOTLAND, Europe(North)
www.bp.com

Chevron Corporation – oil and gas exploration and production operations around the world Contact: , Phone: +1 925-842-1000, Fax: San Ramon, USA, America(North)
www.chevron.com

ConocoPhillips – an international, integrated oil gas exploration and production company Contact: , Phone: (+128) 12 93 10 00, Fax: Houston, USA, America(North)
www.conocophillips.com

DNO – development of smaller petroleum fields
Contact: , Phone: (+47) 23 23 84 80, Fax: (+47) 23 23 84 81 Oslo, NORWAY, Europe(North) www.dno.no

Exxon Mobil Corporation – world’s premier oil, natural gas, LNG and petroleum products company Contact: , Phone: , Fax: Houston, USA, America(North)
www.exxonmobil.com

Gazprom – is the world’s biggest gas exploration and production company
Contact: , Phone: (+709) 57 19 30 01, Fax: (+709) 57 19 83 33 Moscow, RUSSIA, Europe(North) www.gazprom.ru

Hess Corporation – independent oil gas exploration services and processing company Contact: , Phone: (+121) 29 97 85 00, Fax: New York, USA, America(North)
www.hess.com

ONGC – Oil and Natural Gas Corp Ltd – leading National Oil GAS exploration Company of India Contact: , Phone: +9101123301000, Fax: +9101123316413
New Delhi, INDIA, Asia www.ongcindia.com

Petrobras – brazilian integrated corporation whose business is oil and natural gas exploration, production Contact: , Phone: (+5521) 25 34 12 95, Fax: (+5521) 25 34 37 61 Rio de Janeiro, BRASIL, America(South) www.petrobras.com.br

PetroCanada – is a Canadian integrated oil and gas exploration and production company
Contact: , Phone: (+140) 32 96 80 00, Fax: (+140) 32 96 30 30
Calgary, CANADA, America(North) www.petro-canada.ca

Prosafe ASA – production drilling, owner and operator of accommodation/service rigs and FPSOs/FSOs Contact: Karine Cosemans, Phone: (+47) 51 64 25 00, Fax: (+47) 51 64 25 01 Tananger, NORWAY, Europe(North) www.prosafe.com

Shell Oil Company – is one of the largest major oil and natural gas companies
Contact: , Phone: (+171) 32 41 61 61, Fax: (+171) 32 41 40 44 Houston, USA, America(North) www.shell.com

Sonangol – angola oil gas exploration and production company
Contact: , Phone: (+24) 42 33 44 48, Fax: (+24) 42 39 17 82 Luanda, ANGOLA, Africa
www.sonangol.com

StatoilHydro – one of the world’s largest net sellers of crude oil. operator of fields, exploration Contact: , Phone: (+47) 51 99 00 00, Fax: (+47) 51 99 00 50
Stavanger, NORWAY, Europe(North) www.statoilhydro.com

Talisman Energy Inc. – is an independent upstream oil and gas company headquartered in Calgary, Alberta, Canada. Contact: , Phone: (+140) 32 37 12 34, Fax: (+140) 32 37 19 02 Calgary, CANADA, America(North) www.talisman-energy.com

Total – major integrated oil and gas exploration corporation
Contact: , Phone: (+331) 47 44 45 46, Fax: (+331) 47 44 78 78 Courbevoie, FRANCE, Europe(South) www.total.com

Woodside Petroleum – is involved in the exploration, development and production of hydrocarbons Contact: , Phone: (+618) 93 48 40 00, Fax: (+618) 93 48 55 39
Perth, AUSTRALIA, Australia www.woodside.com.au

TAQA – ownstream, midstream and upstream energy company
Contact: , Phone: +971 02 691 4900, Fax: +971 02 641 3286 Abu Dhabi, UAE, Middle East www.taqa.ae

Bergesen Worldwide Offshore AS – dependable FPSO pioneer, providing versatile solutions driven by customer needs Oslo, NORWAY, Europe(North)

Det norske oljeselskap ASA – is an innovative, independent and aggressive oil company
Trondheim, Norway, Europe(North)

GASSCO AS – The independent operator of the gas transport system from the Norwegian continental shelf to Europe. Haugesund, Norway, Europe(North)

Husky Energy – is one of Canada’s largest energy and energy-related companies
Calgary, CANADA, America(North)

Kerr-McGee – is one of the largest U.S.-based independent crude oil exploration and production companies Oklahoma City, USA, America(North)

Lundin Petroleum – independent oil and gas exploration and production company
Stockholm, SWEDEN, Europe(North)

Nexen – is a Canadian-based, global oil gas petroleum company
Alberta, CANADA, America(North)

Sinopec – China Petroleum & Chemical Corporation
Beijing, CHINA, Asia

Apache Corporation – is an independent energy company that explores for, develops and produces natural gas, crude oil and natural gas liquids
Houston, USA, America(North)

SNEPCO – nigerian oil gas exploration and production activities Lagos, NIGERIA, Africa

Petropars – developer of exploration, exploitation and production in upstream, downstream and peripheral industries of oil and gas Tehran, Iran, Middle East

AED OIL Limited – acquiring, developing and commercialising specified oil fields and undertaking oil exploration Melbourne, Australia, Australia.

Fox Oil Drilling Company

Resources

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