occidental petroleum
No 5 Top oil company united states
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  1. List of U.S oil and gas companies 2021
  2. List of All Oil and Gas Companies in the World
    1. Abraxas Petroleum
    2. Ameredev
    3. American Shoreline, Inc.
    4. Amsoil
    5. Anadarko Petroleum Company
    6. Apache Corporation
    7. Apache Energy, LLC.
    8. Aruba Petroleum Incorporated
    9. Barnwell Industries, Inc.
    10. Barrett Resources Corporation
    11. Baytex Energy Ltd.
    12. BBL Manpower
    13. Berry Petroleum Company
    14. BHP Petroleum Company
    15. Black Hills Exploration and Production
    16. Black Star Oil Company
    17. Blue Dolphin Energy
    18. BP Amoco
    19. Bridgetown Energy Corporation
    20. Brigham Exploration Company
    21. British Gas
    22. Cabot Oil and Gas Corporation
    23. Callon Petroleum Company
    24. Camac Holding, Inc.
    25. Canargo Energy
    26. Carnarvon Petroleum NL
    27. Chesapeake energy Corporation
    28. Chevron Corporation
    29. Clayton Williams Energy, Inc.
    30. Clear Creek Resource Partners
    31. CMS Energy Corporation
    32. Compton Petroleum Corporation
    33. Conoco Inc.
    34. Contango Oil and Gas Company
    35. Continental Energy Corporation
    36. Cunningham energy
    37. Curlew Lake Resources Inc
    38. Denbury Resources Inc
    39. Derek Resources
    40. Devon Energy Corporation
    41. Dominion Resources Inc
    42. DONG Energy
    43. Duke Energy Corporation
    44. Dynegy, Inc.
    45. Eagle Oil and Gas Co.
    46. El Paso Energy Corporation
    47. Elf Aquitane
    48. Empresa Colombiana de Petroleos (ECOPETROL)
    49. Energen Corporation
    50. Energie·Fuel Group
    51. Energy Africa
    52. ENX S.A.
    53. EOG Resources
    54. EQT Corporation
    55. Eurogas Corporation
    56. Exxon Corporation
    57. Fidelity Exploration & Production Company
    58. Focus Exploration
    59. Freeport-McMoran Inc
    60. Frontier Oil
    61. FX Energy, Inc
    62. Givot Olam Oil Ltd.
    63. Gulfport Energy, Inc
    64. Hess Corporation
    65. Hindustan Petroleum Corporation Ltd.
    66. Huber Energy
    67. Hunt Oil Co.
    68. Husky Energy
    69. Imperial Oil Ltd. (Esso)
    70. J&J Technical Services
    71. JAPEX
    72. Jetta Operating Company, Inc
    73. JP Oil
    74. KEM Energy
    75. Kinder Morgan, Inc
    76. Koch Industries, Inc
    77. Kuwait National Petroleum Company
    78. Lakes Oil N.L.
    79. Lario Oil & Gas Company
    80. LUKOIL
    81. Maersk
    82. Manti Resources, Inc
    83. Marathon Ashland Petroleum LLC
    84. MarkWest Hydrocarbon, Inc
    85. Miller Energy, Inc
    86. Mobil Oil Corporation
    87. Murphy Oil Corporation
    88. Neste Group (Fortum)
    89. New Horizon Exploration Inc
    90. Newfield Exploration Company
    91. Nido Petroleum
    92. Niko Resources Ltd.
    93. Norsk Hydro ASA
    94. Northstar Energy, Inc
    95. Obele Oil Corporation
    96. Occidental Petroleum Corporation (Oxy)
    97. Oilexco Incorporated
    98. ONEOK, Inc.
    99. P3 Petroleum, Inc
    100. Parallel Petroleum
    101. Penneco Oil Company, Inc
    102. Petro-Canada
    103. Petrobank Energy and Resources Ltd.
    104. Petróleo Brasileiro S.A. (PETROBRAS)
    105. Petróleos de Venezuela S.A. (PDVSA)
    106. Petróleos Mexicanos (PEMEX)
    107. Petroleum Development Corporation
    108. Petroliam Nasional Berhad (PETRONAS)
    109. PetroQuest Energy, Inc
    110. Phillips Petroleum
    111. Pinewave Energy Partners
    112. Pioneer Natural Resources, USA
    113. Pioneer Oil and Gas
    114. Plains All American Pipeline, L.P.
    115. Premier Oil
    116. Prime Atlantic Limited
    117. Production Gathering Company, LLC
    118. Questar Corporation
    119. Quicksilver Resources
    120. Range Resources
    121. Regent Resources Ltd.
    122. REPSOL YPF
    123. Rex Energy
    124. Rosewood Resources
    125. Royal Dutch / Shell
    126. Royal Dutch Shell Argentina
    127. Royal Dutch Shell Australia
    128. Royal Dutch Shell Belgium
    129. Royal Dutch Shell Botswana
    130. Royal Dutch Shell Brazil
    131. Royal Dutch Shell Bulgaria
    132. Royal Dutch Shell Canada
    133. Royal Dutch Shell Cape Verde
    134. Royal Dutch Shell Chile
    135. Royal Dutch Shell Denmark
    136. Royal Dutch Shell Germany
    137. Royal Dutch Shell Hong Kong
    138. Royal Dutch Shell Iceland
    139. Royal Dutch Shell Malaysia
    140. Royal Dutch Shell Netherlands
    141. Royal Dutch Shell Nigeria
    142. Royal Dutch Shell Norway
    143. Royal Dutch Shell Philippines
    144. Royal Dutch Shell Singapore
    145. Royal Dutch Shell Switzerland
    146. Royal Dutch Shell U.S.
    147. Royale Energy Inc
    148. Ruwwe and Glasscock
    149. Sable Offshore Energy Project (SOEP)
    150. Samson Investment Company
    151. San Saba Royalty
    152. Sarita Energy Resources, Ltd.
    153. Sasol Petroleum Project / ExxonMobil
    154. Saudi Aramco
    155. Shell UK
    156. Sinochem International Oil Co.
    157. SM Energy Company
    158. Southwestern Energy Company
    159. STATOIL
    160. Suncor Energy
    161. Sunoco, Inc
    162. Swift Energy Company
    163. Sword Energy, Inc
    164. Syncrude Canada Ltd.
    165. Syntroleum Corporation
    166. Talisman Energy Inc
    167. Tellurian Inc
    168. Tesoro Petroleum
    169. Texaco, Inc
    170. Texas Independent Exploration
    171. Torch Energy Advisors Incorporated
    172. Toreador Royalty Corporation
    173. TotalFina
    174. TransGlobe Energy Corporation
    175. Tri-Valley Corporation
    176. Triumph Energy Corporation
    177. Turkish Petroleum Corporation (TPAO)
    178. Ultra Petroleum Corporation
    179. Unit Corporation
    180. UNOCAL
    181. Vaalco Energy Inc
    182. Valero Energy Corporation
    183. Vanco Energy Company
    184. Vermillion Resources Ltd.
    185. Ward Petroleum Corporation
    186. Western Refining
    187. WhitMar Exploration Company
    188. Woodside Petroleum Ltd.
    189. XTO Energy
    190. Yuma Energy Inc.
    191. Zavanna, LLC

We have compiled below the list of All and the Top oil and gas companies in the world and Also a list of oil and gas companies in USA. You should check out The top 10 Oil And Gas Companies In the USA,

List of U.S oil and gas companies 2021

Currently, there are hundreds of upstream and downstream oil and gas companies based in the United States of America. ExxonMobil and Chevron are the largest and major players in the oil and gas industry of the united states.

The table below contains the list of all oil and gas companies in the US, Right from the biggest to small, single-play, and domestic focused oil companies.

Upstream companiesDownstream companiesIntegrated companies (upstream and downstream business companies)
Abraxas Petroleum Corp.AndeavorChevron Corp.
Adams Resources & Energy Inc.Blue Dolphin Energy Co.ExxonMobil Corp.
Amplify Energy Corp.Calumet Specialty Product Partners LP
Anadarko Petroleum Corp.CVR Energy Inc.
Antero Resources Corp.Delek US Holdings
Apache Corp.HollyFrontier Corp.
Approach Resources Inc.Marathon Petroleum Corp.
Black Stone Minerals LP
Bonanza Creek Energy Inc.
Breitburn Energy Partners LP
Cabot Oil & Gas Corp.
California Resources Corp.
Callon Petroleum Co.
Camber Energy Inc.
Carrizo Oil & Gas Inc.
Centennial Resource Development Inc.
Chesapeak Energy Corp.
Cimarex Energy Co.
Citadel Exploration Inc.
CKX Lands Inc.
CNX Resources Corp.
Cobalt International Energy Inc.
Comstock Resources Inc.
Concho Resources Inc.
ConocoPhillips
Contango Oil & Gas Co.
Continental Resources Inc.
Daybreak Oil & Gas Inc.
Denbury Resources Inc.
Diamondback Energy Inc.
Dorchester Minerals LP
Earthstone Energy Inc.
Eclipse Resources Corp.
Energen Corp.
Energy XXI Gulf Coast Inc.
EOG Resources Inc.
EP Energy Corp.
EQT Corp.
ERHC Energy Inc.
Erin Energy Corp.
EV Energy Partners LP
Evolution Petroleum Corp.
EXCO Resources Inc.
Extraction Oil & Gas Inc.
FieldPoint Petroleum Corp.
Freeport-McMoRan Inc. (mining company with upstream oil and gas interests)
Genie Energy Ltd.
Goodrich Petroleum Corp.
GulfSlope Energy Inc.
Halcon Resources Corp.
HighPoint Resources Corp.
Hess Corp.
Houston American Energy Corp.
Isramco Inc.
Jagged Peak Energy Inc.
Jones Energy Inc.
Kimbell Royalty Partners LP
Kinder Morgan Inc. (midstream company with upstream interests)
Kosmos Energy Ltd.
Laredo Petroleum Inc.
Legacy Reserves LP
Lilis Energy Inc.
Linn Energy Inc.
Lonestar Resources US Inc.
Marathon Oil Corp.
Matador Resources Co.
Mexco Energy Corp.
Mid-Con Energy Partners LP
Midstates Petroleum Company Inc.
Murphy Oil Corp.
National Fuel Gas (midstream company with upstream interests)
Newfield Exploration Company
Noble Energy Inc.
Northern Oil & Gas Inc.
Oasis Petroleum Inc.
Occidental Petroleum Corp.
Panhandle Oil & Gas Inc.
Parsley Energy Inc.
PDC Energy Inc.
PEDEVCO Corp.
Penn Virginia Corp.
Petrolia Energy Corp.
PetroQuest Energy Inc.
Pioneer Natural Resources Co.
QEP Resources Inc.
Range Resources Corp.
Resolute Energy Corp.
Rex Energy Corp.
Ring Energy Inc.
Rosehill Resources Inc.
Royale Energy Inc.
RSP Permian Inc.
Sanchez Energy Corp.
SandRidge Energy Inc.
SilverBow Resources Inc.
SM Energy Co.
Southwestern Energy Co.
Spindletop Oil & Gas Co.
SRC Energy Inc.
Stone Energy Corp.
Tengasco Inc.
Tiger Oil and Energy Inc.
Titan Energy LLC
Torchlight Energy Resources Inc.
Transatlantic Petroleum Ltd.
T-Rex Oil Inc.
Ultra Petroleum Corp.
Unit Corp.
U.S. Energy Corp.
Vaalco Energy Inc.
Vanguard Natural Resources Inc.
Viper Energy Partners LP
W&T Offshore Inc.
West Texas Resources Inc.
Whiting Petroleum Corp.
WildHorse Resource Development Corp.
WPX Energy Inc.
Yuma Energy Inc.
Zion Oil & Gas Inc.
List of Oil & Gas Companies in US

List of All Oil and Gas Companies in the World

The list also contains the oil and gas companies in Singapore, Saudi Arabia, Kuwait, Canada, Abu Dhabi UAE, Oman, Bahrain, Nigeria, Malaysia, Australia, Europe, the middle east, Norway, Russia, Kazakhstan, oil and gas companies in India, Texas USA and various other parts of the world. All these companies are drawn out of various updated report from the world petroplium, oil and gas indurstry. Top oil companies in the world from oil and gas companies in UAE, Qatar, Dubai UAE.

So, here is the list of other companies on the list of all oil and gas companies:

Abraxas Petroleum

Abraxas Petroleum is a San Antonio-based crude oil and natural gas exploration and production company with operations across the Permian Basin, Rocky Mountain, Wyoming, Canada, and South Texas regions of the U.S.

Ameredev

Ameredev is an independent E&P company engaged in the acquisition and development of oil and gas properties across the United States. Current operations are focused in the northern Delaware Basin.

American Shoreline, Inc.

Established in 1979, American Shoreline, Inc. is a successful energy company specializing in oil and gas exploration. Exploration company headquartered in Corpus Christi, Texas.

Amsoil

Specializes in synthetic lubricants in a wide range of markets such as; automotive, Powersports, industrial, racing and more.

Anadarko Petroleum Company

Exploration, development, production, and marketing of natural gas, crude oil, condensate, and natural gas liquids

Apache Corporation

Independent oil and gas exploration and development company with operations in North America, Egypt, Western Australia, Poland, and the People’s Republic of China.

Apache Energy, LLC.

Apache Energy, LLC is engaged in the oil and gas business, with operations located primarily in Texas. The Company’s ultimate strategic focus is the development of oil and natural gas production and reserves.

Aruba Petroleum Incorporated

Texas mineral exploration and production company, and a full-service operating company.

Barnwell Industries, Inc.

Engaged in the business of exploring for, developing, producing, and selling oil and natural gas in Canada, investing in leasehold land in Hawaii, and drilling and maintaining water systems in the State of Hawaii

Barrett Resources Corporation

Barrett Resources Corporation explores for and produces natural gas and crude oil. The oil and gas Denver-based company is independently involved in gas gathering, marketing, and trading activities. Properties are located principally in the Rocky Mountain and Mid-Continent regions.

Baytex Energy Ltd.

Calgary-based oil and natural gas exploration, development, and production company.

BBL Manpower

Providing over 30 years of experience in oil & gas, marine, engineering, and construction with innovative, cost-effective recruitment solutions.

Berry Petroleum Company

The california-based independent company experienced in heavy crude oil production and development.

BHP Petroleum Company

International oil and gas exploration and production company based in Australia, with upstream activities in 18 countries.

Black Hills Exploration and Production

Oil and gas exploration and production company with operations in California, Montana, North Dakota, Texas, Wyoming, Louisiana, and Oklahoma.

Black Star Oil Company

Provides geological/geophysical, engineering, land, operations, and completion services. Based in Dallas.

Blue Dolphin Energy

Gathering and transportation of natural gas and condensate, exploration and acquisition of oil and gas properties, and development of an offshore terminal and storage facility to handle crude oil and refined products.

BP Amoco

BP and Amoco have merged to form one of the world’s leading providers of energy and petrochemicals.

Bridgetown Energy Corporation

Bridgetown Energy Corporation is a Calgary-based emerging oil and natural gas company engaged in the acquisition, development, exploration, and production of oil and natural gas reserves in Western Canada.

Brigham Exploration Company

Oil and gas exploration companies focused on the implementation of 3-D seismic imaging techniques to reduce finding and development costs.

British Gas

BG is a leading international energy company that is actively developing and supplying gas markets worldwide.

Cabot Oil and Gas Corporation

Natural gas producer, explorer, and marketer with interests and operations in Appalachia, the mid-continent, the Rocky Mountains, and onshore Gulf Coast.

Callon Petroleum Company

Exploration, development, acquisition, and operation of oil and gas properties in the Gulf Coast region.

Camac Holding, Inc.

The parent company of Allied Energy Corporation.

Canargo Energy

Operates from a base in The Republic of Georgia, with interests in Georgia, The Ukraine, and Dagestan.

Carnarvon Petroleum NL

Oil and gas company with exploration joint ventures in Western Australia and Papua New Guinea.

Chesapeake energy Corporation

Oil and gas producer headquartered in Oklahoma City with reserves and current drilling activities in the Mid-Continent, the onshore Gulf Coast regions of the U.S., and in British Columbia.

Chevron Corporation

Chevron Corporation is one of the world’s largest integrated petroleum companies.

Clayton Williams Energy, Inc.

Primarily engaged in the exploration for and the development of oil and natural gas.

Clear Creek Resource Partners

Formed in January of 2017, Clear Creek Resource Partners (“CCRP” or the “Company”) is a privately-held, DJ Basin-focused operator. To date, CCRP has assembled more than 40,000 net acres in Weld County, CO, and Laramie County, WY.

CMS Energy Corporation

Conducts energy exploration and development operations throughout the U.S. and internationally.

Compton Petroleum Corporation

The Calgary-based company actively engaged in the exploration, development, and production of natural gas, natural gas liquids, and crude oil in Western Canada.

Conoco Inc.

Conoco Inc. is a fully integrated energy company, active in 40 countries and involved in every aspect of the oil and gas industry.

Contango Oil and Gas Company

Houston-based, independent natural gas and oil company engaged in exploration, development, production, and acquisition of natural gas and

Continental Energy Corporation

Small oil and gas exploration companies focused entirely on making a major oil or gas discovery. Continental concentrates its efforts in Indonesia.

Cunningham energy

Cunningham Energy is an independent producer of oil and gas-based in Charleston, West Virginia. The company was formed in 2008 for the purpose of acquiring, exploring, and producing oil and gas in the Appalachian, Illinois, and Williston Basins.

Curlew Lake Resources Inc

Oil & gas exploration, development, and production company with operations in the western sedimentary basins of Canada and the United States.

Denbury Resources Inc

Oil and gas acquisition, development, and exploration company with operations primarily in Louisiana and Mississippi.

Derek Resources

Oil and gas exploration operator in Wyoming.

Devon Energy Corporation

Exploration and production company headquartered in Oklahoma City.

Dominion Resources Inc

Dominion offers power generation, independent oil and natural gas exploration and production, interstate gas pipelines, and underground gas storage.

DONG Energy

Dong Energy is Denmark’s national energy company. DONG operates internationally with production and supply of energy and associated services, always with due regard for the environment, health and safety.

Duke Energy Corporation

Creates shareholder value through the production, delivery, and sale of energy and energy-related products and services for our customers worldwide.

Dynegy, Inc.

Markets natural gas, natural gas liquids, crude oil, and electricity, and is engaged in natural gas gathering, processing, and transportation.

Eagle Oil and Gas Co.

Eagle Oil & Gas Co. is a private, independent oil and gas company based in Dallas, Texas. Eagle Oil & Gas Co., through predecessor and affiliate companies, has been active in the acquisition, development and exploration of oil and gas reserves for over 60 years.

El Paso Energy Corporation

Integrated energy company focused on natural gas transmission, gas gathering and processing, gas and oil production, power generation, merchant energy services, and international project development. Recently merged with Sonat, Inc.

Elf Aquitane

Elf Aquitaine and TotalFina have merged to form one of the world’s largest integrated oil companies.

Empresa Colombiana de Petroleos (ECOPETROL)

Ecopetrol is the Colombian state oil company, attached to the Ministry of Mines and Energy. It functions as a commercial company, engaged in the characteristic activities of the oil industry and its related products.

Energen Corporation

Energen Resources Corporation focuses on increasing its production and proved reserves through the acquisition and exploitation of producing oil and gas properties with varying levels of development potential.

Energie·Fuel Group

Zero fees, wholesale Fuel Cards & Management Solution for fleets, equipment operators, and contractors. Energy management & carbon emissions for companies. San Diego local delivery of oils, chemicals.

Energy Africa

South African oil and gas exploration and production group.

ENX S.A.

A dynamic Energy Exchange Group, specializing in production and trading of oil & gas, and processing crude oil into fuels.

EOG Resources

Exploration and production company are active in Wyoming, New Mexico, Texas, California, the Gulf of Mexico, Canada, and Trinidad.

EQT Corporation

EQT Corporation is an integrated energy company with an emphasis on Appalachian area natural gas production, gathering, and transmission. With more than 125 years of experience, EQT continues to be a leader in the use of advanced horizontal drilling technology – designed to minimize the potential impact of drilling-related activities and reduce the overall environmental footprint.

Through safe and responsible operations, the Company is committed to meeting the country’s growing demand for clean-burning energy, while continuing to provide a rewarding workplace and enrich the communities where its employees live and work in Pennsylvania, Ohio, West Virginia, Kentucky, Virginia, and Texas.

Eurogas Corporation

Eurogas Corporation is an independent oil and gas company engaged in exploration, development, production, and acquisition activities in Tunisia, Spain, Russia, and Canada.

Exxon Corporation

Exxon conducts exploration and/or production operations in 30 countries around the world. The global downstream business includes operations in more than 75 countries

Fidelity Exploration & Production Company

Fidelity Exploration & Production Company is engaged in oil and natural gas acquisition, exploration, and production activities throughout the United States, the Gulf of Mexico, and Canada.

Focus Exploration

Oil and Gas exploration company: Onshore and Offshore – Texas and Louisiana Gulf Coast.

Forest Oil Corporation

The Denver-based company which explores for develops and markets natural gas and crude oil in North America.

Freeport-McMoran Inc

Leading international mining company that operates large, long-lived, geographically diverse assets with significant proven and probable reserves of copper, gold, and molybdenum. FCX is the world’s largest publicly traded copper producer.

Frontier Oil

Frontier Oil Corporation is an independent oil refining and marketing company with complex refineries located in Wyoming and Kansas. Frontier’s primary products of gasoline, diesel, and asphalt are marketed in the Rocky Mountain and the Plains States.

FX Energy, Inc

Utah-based company focused on oil and gas exploration and development in Poland.

Givot Olam Oil Ltd.

Israeli exploration and production company.

Gulfport Energy, Inc

Owns and operates mature oil and gas properties in the Louisiana Gulf Coast area.

Hess Corporation

Hess is a large independent engaged in the exploration, production, refining, transportation, and marketing of petroleum products.

Hindustan Petroleum Corporation Ltd.

One of the largest integrated petroleum companies in India.

Huber Energy

A subsidiary of J.M. Huber. Privately owned energy company involved in exploration, development, and production in the Texas Panhandle, onshore and offshore Texas Gulf Coast, and coal seam gas in Colorado, Wyoming, and Utah.

Hunt Oil Co.

A privately-held exploration and production company, Hunt Oil has successfully conducted worldwide petroleum operations for over 68 years. Today we are one of the world’s leading independent energy companies.

Husky Energy

Canadian-based privately held integrated oil and gas company headquartered in Calgary, Alberta.

Imperial Oil Ltd. (Esso)

Imperial is one of Canada’s largest corporations and has been a leading member of the petroleum industry for more than a century

J&J Technical Services

Australia Oil and Gas Operator.

JAPEX

Japanese oil and gas exploration and production company.

Jetta Operating Company, Inc

A privately-held company based in Fort Worth, engaged in acquisition, exploration, and development of oil and gas properties.

JP Oil

Oil and gas producer based in Lafayette, LA, with properties throughout North America.

KEM Energy

KEM Energy Inc. is a company that specializes in oil and gas production and our office is located in the Energy Corridor area of Houston, Texas. KEM is focused on investing and developing producing oil and gas assets in the United States. KEM is well known for control of cost and high efficiency. KEM has 8 producing oil and gas fields in the United States with more than 200 wells.

Kinder Morgan, Inc

The largest independent owner/operator of products pipelines in the country, transporting more than two million barrels a day of gasoline, jet fuel, diesel fuel, and natural gas liquids through more than 10,000 miles of pipelines. The Products Pipelines segment also includes associated storage terminals and transmit processing facilities.

Koch Industries, Inc

Private U.S corporation active in purchasing, gathering, trading, and transportation of crude oil; marketing of refined products; and providing financial services to producers, refiners, and retailers.

Kuwait National Petroleum Company

Kuwait National Petroleum Company has one of the largest oil complexes in the world. It houses three major oil refineries.

Lakes Oil N.L.

Australian oil and gas exploration and production company.

Lario Oil & Gas Company

Kansas-based oil and gas company active in western North America.

LUKOIL

LUKOIL is Russia’s leader in the energy and fuel industry, harmoniously combining all lines of oil business from oil production to the sale of petroleum products.

Maersk

Maersk holds the concession for exploration and production from areas in the Danish part of the North Sea, and also participates in oil exploration and production in other parts of the world.

Manti Resources, Inc

Texas company engaged in exploration, development, and production.

Marathon Ashland Petroleum LLC

Marathon Ashland Petroleum LLC is a combination of two of the nation’s premier energy companies, engaged in the exploration, production, refining, transportation, and marketing of petroleum products

MarkWest Hydrocarbon, Inc

Colorado company which provides services to natural gas producers, taking gas from the wellhead and converting it into usable products.

Miller Energy, Inc

Michigan-based oil and gas exploration company committed to the pursuit of domestic oil and gas exploration, acquisitions, and investment utilizing superior scientific, financial, and strategic alliances.

Mobil Oil Corporation

Mobil operates in over 125 countries, spanning the energy chain and spanning the globe.

Murphy Oil Corporation

Natural resources company that operates through wholly-owned subsidiaries in the United States and internationally as an integrated oil enterprise and as a producer of natural gas.

Neste Group (Fortum)

Energy company Fortum’s Oil & Gas Division was formed through the combination of the oil and gas businesses of the Finnish oil, energy, and chemicals company Neste. Fortum’s new organization became effective at the beginning of 1999.

New Horizon Exploration Inc

Integrated oil and gas exploration and production company.

Newfield Exploration Company

Independent oil & gas company focused primarily in the Gulf of Mexico with activities along the Gulf Coast and internationally, in offshore Australia and China.

Nido Petroleum

Oil and gas exploration company with operations in China and the Philippines.

Niko Resources Ltd.

Calgary based oil and gas company with a focus on countries with recognized large hydrocarbon potential

Norsk Hydro ASA

Norsk Hydro is an industrial company based on the use of natural resources, with the aim of meeting needs for food, energy, and materials.

Northstar Energy, Inc

Independent producer of oil and gas that specializes in offering investment opportunities into currently producing oil and gas wells.

Obele Oil Corporation

Exploring, developing, and operating oil and gas properties within the continental U.S. for more than 25 years.

Occidental Petroleum Corporation (Oxy)

A california-based company that explores for, develops, produces & markets crude oil and gas domestically and overseas.

Oilexco Incorporated

Canadian energy company committed to achieving growth and creating shareholder value through oil and gas exploration and strategic reserve acquisitions.

ONEOK, Inc.

A diversified energy company. Originally founded in 1906 as an intrastate pipeline business, ONEOK today is involved in all aspects of the natural gas industry. It also markets and trades energy commodities, including wholesale electricity.

P3 Petroleum, Inc

An exploitation and production start-up focused on oil and liquids-rich natural gas opportunities.

Parallel Petroleum

Engaged in the exploration for and the acquisition of oil and gas properties, primarily in the Permian Basin and onshore Gulf Coast areas of Texas.

Penneco Oil Company, Inc

http://www.parallel-petro.com/

Petro-Canada

Petro-Canada is a major Canadian oil and gas company and a leader in the Canadian petroleum industry, an integrated company, with a balanced portfolio of businesses spanning both the upstream and downstream sectors of the industry.

Petrobank Energy and Resources Ltd.

Oil and natural gas exploration company with activities concentrated in southern and west-central Alberta.

Petróleo Brasileiro S.A. (PETROBRAS)

Petrobras is Brazil’s national energy company and is now internationally acknowledged as one of the largest twenty major oil companies in the world today, leading the sector in the implementation of the most advanced deep-water technology, for oil production.

Petróleos de Venezuela S.A. (PDVSA)

PDVSA is owned by the Republic of Venezuela, and is charged with the development of the petroleum, petrochemical, and coal industry, and is responsible for planning, coordinating, supervising, and controlling the operational activities of its divisions, both in Venezuela and abroad.

Petróleos Mexicanos (PEMEX)

PEMEX is the largest company in Mexico and is responsible for the management of oil industry operations for the entire country.

Petroleum Development Corporation

Nevada corporation engaged in the business of exploring for, developing, and producing natural oil and gas, primarily in the Appalachian Basin, the Michigan Basin, and the Rocky Mountain region.

Petroliam Nasional Berhad (PETRONAS)

PETRONAS, short for Petroliam Nasional Bhd, is Malaysia’s national petroleum corporation. The corporation is vested with the entire oil and gas resources in Malaysia and entrusted with the responsibility of developing and adding value to these resources.

PetroQuest Energy, Inc

International oil and gas exploration and production companies primarily focused on high potential prospects in the Gulf Coast of Louisiana.

Phillips Petroleum

Phillips Petroleum Company is a major, integrated oil company based in the United States with worldwide operations.

Pinewave Energy Partners

Pine Wave was created to identify and commercially exploit unconventional resources across the East Texas Basin. Our team combines refined subsurface discernment with modern good stimulation and flow back techniques to realize well-level economics in areas that were previously avoided or underdeveloped.

Pioneer Natural Resources, USA

Independent oil and gas exploration and production company.

Pioneer Oil and Gas

Utah-based oil and gas exploration and acquisition company.

Plains All American Pipeline, L.P.

PAA is engaged in interstate and intrastate crude oil transportation, terminaling, and storage, as well as crude oil gathering and marketing activities. The Partnership’s operations are primarily concentrated in the states of California, Texas, Oklahoma, Louisiana, and the Gulf of Mexico, and in the Canadian provinces of Alberta and Saskatchewan.

Premier Oil

Worldwide energy company specializing in exploration, development, and production of gas and oil.

Prime Atlantic Limited

Provides services and solutions which cater to various needs within the industry, ranging from Operation & Maintenance to a bouquet of specialized training in Fire Fighting, Basic and Advanced.

Production Gathering Company, LLC

Dallas based gatherer, marketer, and producer of natural gas and natural gas liquids.

Questar Corporation

Questar Corp., is an integrated energy resources and services company headquartered in Salt Lake City. Through subsidiaries, it engages in energy development, production, gathering, processing, transmission, storage, and marketing.

Quicksilver Resources

Natural gas and crude oil production company based in Ft. Worth.

Range Resources

oil and gas company operating in the Appalachian, Permian, Mid-continent and Gulf Coast regions of the United States.

Regent Resources Ltd.

Privately owned resource Company engaged in the exploration for and development, production and marketing of oil and natural gas in Western Canada.

REPSOL YPF

REPSOL and YPF merged in 1999 to form a large integrated oil company engaged in the exploration, production, marketing, petrochemicals, and electricity generation.

Rex Energy

Acquires producing oil and gas properties throughout the United States and Canada.

Rosewood Resources

Oil and gas exploration and development company headquartered in Dallas, Texas.

Royal Dutch / Shell

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Argentina

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Australia

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Belgium

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Botswana

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Brazil

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Bulgaria

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Canada

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Cape Verde

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Chile

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Denmark

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Germany

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Hong Kong

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Iceland

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Malaysia

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Netherlands

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Nigeria

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Norway

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Philippines

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Singapore

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell Switzerland

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royal Dutch Shell U.S.

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Royale Energy Inc

Natural gas exploration and production company active in the Sacramento Basin.

Ruwwe and Glasscock

Oil & gas exploration and operations in Texas, Oklahoma, & New Mexico.

Sable Offshore Energy Project (SOEP)

Nova Scotia company that oversees the development of the offshore Sable gas field.

Samson Investment Company

Tulsa based global exploration and production company.

San Saba Royalty

San Saba Royalty is the most experienced and trusted purchaser of oil & gas mineral and royalty interests in Texas. As true pioneers of the industry, San Saba Royalty has built a well-respected and efficient model that produces the best possible offers for clients looking to liquidate their royalty interests.

Sarita Energy Resources, Ltd.

Oil and Gas Partner.

Sasol Petroleum Project / ExxonMobil

South African upstream oil and gas exploration and production company focused on high-potential areas in Africa.

Saudi Aramco

The Saudi Arabian Oil Company is a global leader in the petroleum industry. A fully integrated, international oil company, Saudi Aramco is committed to providing the reliable energy supplies the world needs for continued prosperity and development.

Shell UK

The Royal Dutch/Shell Group of Companies – usually known as Shell – has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the “Shell” Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals, Gas & Power Generation, and Renewables.

Sinochem International Oil Co.

The Beijing-based company is involved in oil exploration, development, refining, and distribution.

SM Energy Company

The Denver-based company engaged in the exploration, development, acquisition, and production of natural gas and crude oil in five core areas in the United States.

Southwestern Energy Company

Integrated energy company engaged in oil and gas exploration and production, natural gas gathering, transmission, distribution, and marketing.

STATOIL

Statoil – Den norske stats oljeselskap a.s – is one of the world’s largest net sellers of crude oil, and a substantial supplier of natural gas to Europe. It ranks as the biggest retailer of petrol and other oil products in Scandinavia.

Suncor Energy

Canadian energy company involved in mining and extracting crude oil from oil sands deposits of Northern Canada, and exploration, development, and marketing of conventional crude oil and natural gas in Western Canada.

Sunoco, Inc

Petroleum refining and marketing company based in Philadelphia.

Swift Energy Company

Houston based oil and natural gas company engaged in the exploration, exploitation, acquisition, and operation of oil and gas properties, with a primary focus on U.S. onshore natural gas reserves.

Sword Energy, Inc

Formally Thunder Energy Trust, Sword Energy is a Calgary-based oil and gas company with drilling operations in central Alberta.

Syncrude Canada Ltd.

Canadian producer of blended crude oil from oil sands, and operator of a large oil sand mine, utility plant, bitumen extraction plant, and upgrading facility.

Syntroleum Corporation

Tulsa, Oklahoma company engaged in converting natural gas into synthetic liquid fuels and specialty products.

Talisman Energy Inc

This Calgary-based oil and gas independent engaged in exploration, development, production, and marketing of crude oil, natural gas, and natural gas liquids. The main operating areas are Canada, the North Sea, Indonesia, and Sudan.

Tellurian Inc

Tellurian is developing a portfolio of natural gas production, LNG trading, and infrastructure that includes an ~ 27.6 mtpa LNG export facility and an associated pipeline.

Tesoro Petroleum

Tesoro Petroleum Corporation is a natural resource company engaged in the refining, distributing, and marketing of petroleum products. It also provides marine logistics services.

Texaco, Inc

Operating in some 150 countries, Texaco and its affiliates explore for, find and produce oil and natural gas; manufacture and market high-quality fuels and lubricant products; operate trading, transportation, and distribution facilities; and produce alternate forms of energy for power, manufacturing, and chemicals.

Texas Independent Exploration

Texas Independent Exploration Limited (TIE) is a limited partnership headquartered in Houston, TX. TIE has been in the exploration and production business for over 30 years employing a low-risk drilling and exploration strategy emphasizing field extension, deeper pool, and development drilling prospects in Texas, Louisiana, and New Mexico. Our company utilizes state-of-the-art geological and geophysical technologies.

Torch Energy Advisors Incorporated

Houston-based outsourcing provider to the energy industry with interests in proved developed oil and gas properties in Texas, Alabama, and Louisiana.

Toreador Royalty Corporation

Oil and gas exploration, development, production, and acquisition activities in Mississippi, Alabama, and Louisiana, and Texas.

TotalFina

TotalFina and Elf Aquitaine have merged to form one of the world’s largest integrated oil companies.

TransGlobe Energy Corporation

Calgary-based company involved in oil and gas exploration and production.

Tri-Valley Corporation

Oil, gas, and gold exploration and production company based in Bakersfield, California.

Triumph Energy Corporation

Junior oil and gas company. Activity is focused primarily in western Canada.

Turkish Petroleum Corporation (TPAO)

TPAO is Turkey’s national oil company responsible for the exploration and production of hydrocarbons both in Turkey and abroad to meet Turkey’s vast demand for oil and natural gas.

Ultra Petroleum Corporation

Oil and gas exploration and production company active in the Green River Basin in Wyoming.

Unit Corporation

Energy company involved in the exploration and production of oil and natural gas through its subsidiary, Unit Petroleum Company, and the contract drilling of onshore oil and natural gas wells through its subsidiary, Unit Drilling Company.

UNOCAL

UNOCAL is an integrated oil company engaged in exploration, development, marketing, petrochemicals, and geothermal energy.

Vaalco Energy Inc

Houston-based independent energy company principally engaged in the acquisition, exploration, development, and production of crude oil and natural gas.

Valero Energy Corporation

Refining and marketing company that owns and operates five refineries in Texas, Louisiana, and New Jersey.

Vanco Energy Company

Independent exploration company with emphasis in offshore East Africa.

Vermillion Resources Ltd.

Oil and gas exploration and production company based in western Canada.

Ward Petroleum Corporation

Independent oil and gas company in Oklahoma.

Western Refining

Western Refining is an independent oil refiner and marketer headquartered in El Paso, Texas. The company operates primarily in the Southwestern and Mid-Atlantic regions of the United States.

WhitMar Exploration Company

Denver based oil and gas exploration and production company with its primary focus in the Mid-Continent and Gulf Coast regions.

Woodside Petroleum Ltd.

Australian oil and gas explorer, developer and producer active on the Northwest Shelf

XTO Energy

XTO Energy, formally Cross Timbers, is a subsidiary of ExxonMobil and is an Oil and natural gas producer.

Yuma Energy Inc.

Yuma Energy, Inc. is an independent Houston-based exploration and production company. We are focused on the acquisition, development, and exploration of conventional and unconventional oil and natural gas resources, primarily in the U.S. Gulf Coast, the Permian Basin of west Texas, and California.

Zavanna, LLC

Oil and gas exploration and development company based in Denver, Colorado.

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