Abraxas Petroleum Corporation, an independent energy company, engages in the acquisition, development, exploration, and production of oil and gas principally in the Rocky Mountain, Mid-Continent, Permian Basin, and Gulf Coast regions of the United States. The company was founded in 1977 and is based in San Antonio, Texas.

Altex Industries, Inc. engages in the exploration and development of oil and gas properties located in Utah and Wyoming. It owns working interests in 2 gross productive oil wells, as well as in 203 gross developed acres. The company was founded in 1985 and is based in Breckenridge, Colorado.

American Oil & Gas, Inc., an independent energy company, engages in the acquisition, exploration, and development of crude oil and natural gas in the western United States. It controls approximately 53,000 gross acres in the Fetter Project area, located in the southern Powder River Basin, Wyoming; approximately.. Read More

Anadarko Petroleum Corporation engages in the exploration and production of oil and gas properties primarily in the United States, the deepwater of the Gulf of Mexico, and Algeria. The company markets natural gas, crude oil, condensate, and oil and natural gas liquids (NGLs), as well as owns and operates natural.. Read More

Apache Corporation, together with its subsidiaries, engages in the exploration, development, and production of natural gas, crude oil, and natural gas liquids. The company has exploration and production interests in the Gulf of Mexico, the Gulf Coast, east Texas, the Permian basin, the Anadarko basin, and the.. Read More

Apco Argentina Inc. engages in the exploration and production of oil and gas properties in Argentina. It principally owns a 52.79% joint venture interest the Entre Lomas, Bajada del Palo, and Agua Amarga areas located in the provinces of Rio Negro and Neuquen in southwestern Argentina. The company was founded in.. Read More

Aspen Exploration Corporation engages in the exploration, development, and production of oil and gas properties in California and Montana, the United States. The company principally produces and sells crude oil and natural gas to pipeline companies. It operates 67 gas wells and has a non-operated interest in 26.. Read More

ATP Oil & Gas Corporation engages in the acquisition, development, and production of oil and natural gas properties in the Gulf of Mexico, the United Kingdom, and Dutch Sectors of the North Sea. As of December 31, 2008, the company had leasehold and other interests in 77 offshore blocks, 41 platforms, and 129.. Read More

Aurora Oil & Gas Corporation, an independent energy company, focuses on the exploration and development of unconventional natural gas reserves. The company owns working interests in 640 gross and 320 net wells, which included 28 gross and 26 net non-producing wells of Antrim shale properties in northern Michigan;.. Read More

Avenue Group, Inc., through its subsidiaries, engages in the acquisition, exploration, development, and production of oil and gas in the United States and Israel. It owns 100% of the Heletz-Kokhav and 50% of the Iris, which are 2 petroleum exploration licenses in Israel that covers approximately 4000 acres; and.. Read More

Bankers Petroleum Ltd.: Acquisition, exploration and development of oil and gas properties. Heavy oil production from Patos-Marinza field in Albania; exploration for natural gas on leased lands in Palo Duro Basin of West Texas. Common shares listed on the Toronto Stock Exchange; Ontario Charter, 1983;.. Read More

Barnwell Industries, Inc., together with its subsidiaries, engages in the acquisition, exploration, development, production, and sale of oil and natural gas in Canada. Its principal oil and natural gas property is the Dunvegan Unit located in Alberta. The company also holds interests in Red Earth, Bonanza/Balsam,.. Read More

Basic Earth Science Systems, Inc. engages in the exploration, acquisition, development, operation, production, and sale of crude oil and natural gas in the United States. It focuses in the North Dakota and Montana portions of the Williston basin, the Denver-Julesburg basin of Colorado, the southern portions of.. Read More

Bayou City Exploration, Inc. engages in the oil and gas business primarily in the gulf coast of Texas, east Texas, south Texas, and Louisiana. The company develops oil and gas prospects for the drilling of oil and gas wells, and focuses to sell the prospects to oil and gas exploration companies. As of December.. Read More

Berry Petroleum Company engages in the production, development, acquisition, exploitation, and exploration of crude oil and natural gas in the United States. The companys properties are located in California, Texas, Utah, and Colorado. As of December 31, 2008, it had estimated proved reserves of 245.9 million barrels of oil equivalent. The company also engages in the generation and sale of electricity. Berry Petroleum Company markets its crude oil to oil refiners or third party marketers. The company was founded in 1909 and is headquartered in Denver, Colorado.

Big Sky Energy Corporation engages in the exploration and production of oil and gas in Kazakhstan. It has five onshore petroleum licenses in the prolific pre-Caspian basin in the Republic of Kazakhstan. The company, formerly known as China Broadband Corp., was incorporated in 2000. It changed its name to China.. Read More

Blue Dolphin Energy Company, through its subsidiaries, engages in the provision of pipeline transportation and related services for producers/shippers, and exploration and production of oil and gas in the United States. Its pipeline transportation and related services include the operation of the Blue Dolphin Pipeline system, which comprise the offshore segment that transports gas and condensate and consists of approximately 34 miles of 20-inch pipeline from a offshore platform in Galveston Area Block 288 to shore, as well as the platform in Galveston Area Block 288 and 5 field gathering lines totaling approximately 27 miles, connected to the main 20-inch line; and the onshore segment consisting of approximately 2 miles of 16-inch pipeline for transportation of gas from the shore facility to a sales point at a Freeport, Texas chemical plants complex and intrastate pipeline system tie-in. The companys pipeline systems also include the Buccaneer Pipeline, an 8-inch liquids pipeline, which transports condensate from the onshore facility storage tanks to the company's barge-loading terminal on the Intracoastal Waterway near Freeport, Texas for sale to third parties; Galveston Area Block 350 Pipeline consisting of 8-inch, 13 mile offshore pipeline extending from Galveston Area Block 350 to an interconnect with a transmission pipeline in Galveston Area Block 391; and the Omega Pipeline from the High Island Area, East Addition Block A-173 and extends to West Cameron Block 342. Blue Dolphin Energy Companys oil and gas exploration and production properties comprise High Island Block 37 located approximately 15 miles south of Sabine Pass, offshore Texas; High Island Block A-7, located approximately 33 miles southeast of Bolivar Peninsula, offshore Texas; and High Island Block 115 located approximately 30 miles southeast of Bolivar Peninsula, offshore Texas. The company was founded in 1986 and is based in Houston, Texas.

BMB Munai, Inc., an independent oil and natural gas company, engages in the exploration, development, acquisition, and production of crude oil and natural gas properties in the Republic of Kazakhstan. As of March 31, 2008, it had approximately 10,784 thousand barrels of oil, condensate, and natural gas liquids in.. Read More

Brigham Exploration Company engages in the exploration, development, and production of oil and natural gas reserves in the Rocky Mountains, Onshore Gulf Coast, Anadarko Basin, and west Texas. The company holds property interests in the Powder River Basin located in Wyoming. It also holds property interests in the.. Read More

Cabot Oil & Gas Corporation engages in the development, exploitation, and exploration of oil and gas properties in North America. Its principal areas of operation comprise the Appalachian Basin; the onshore Gulf Coast, including south and east Texas and north Louisiana; the Rocky Mountains; and the Anadarko.. Read More

An independent natural gas and oil exploration and production company concentrating on growing reserves and production through the exploration, development, exploitation and acquisition of natural gas and oil reserves in North America.

Callon Petroleum Company engages in the acquisition, exploration, development, and production of oil and gas properties in the onshore and offshore Gulf Coast region, the United States. As of December 31, 2008, its estimated net proved reserves totaled 54.8 billion cubic feet of natural gas equivalent, including.. Read More

Canadian Natural Resources Limited engages in the exploration, development, and production of crude oil and natural gas. The company also engages in the midstream activities, which include its pipeline operations and an electricity co-generation system. Its conventional crude oil and natural gas operations are.. Read More

CanArgo Energy Corporation, through its subsidiaries, engages in the acquisition, exploration, development, production, and marketing of crude oil and natural gas principally in Georgia. The company owns interest in the Ninotsminda Field covering approximately 3,276 acres located north east of the Georgian.. Read More

Capco Energy, Inc. engages in the acquisition, exploration, development, production, and sale of oil, gas, and natural gas liquids in the United States. Its oil and gas properties are primarily located in the Texas Gulf Coast, and the states of Michigan and Montana. As of December 31, 2004, the companys proved.. Read More

Capital City Energy Group, Inc., through its subsidiaries, offers energy services. The company provides oil and natural gas production, drilling, operating, acquisitions, and fund management. It also structures, funds, and manages energy properties. The company markets its services under the Triad brand name... Read More

Carrizo Oil & Gas, Inc., together with its subsidiaries, engages in the exploration, development, and production of natural gas and oil, primarily in the United States. The company focuses on proven and producing natural gas and oil geologic trends in the Barnett Shale area in North Texas with a focus on.. Read More

Castleguard Energy, Inc. engages in the acquisition, development, and exploitation of crude oil and natural gas properties in Louisiana and Texas. It also engages in the production of crude oil and natural gas in North America through working interests operated by other parties. As of December 31, 2005, the.. Read More

Century Petroleum Corp. engages in the acquisition and exploration of oil and gas properties in the United States. The company, formerly known as Som Resources, Inc., was founded in 2004 and is based in The Woodlands, Texas.

Chesapeake Energy Corporation, an oil and natural gas exploration and production company, engages in the acquisition, exploration, and development of properties for the production of crude oil and natural gas from underground reservoirs. It also provides marketing and midstream services for natural gas and oil for other working interest owners in properties it operate. The companys properties are located in Oklahoma, Texas, Alabama, Arkansas, Louisiana, Kansas, Montana, Colorado, North Dakota, Nebraska, New Mexico, West Virginia, Kentucky, Ohio, New York, Maryland, Michigan, Mississippi, Pennsylvania, Tennessee, Utah, Virginia, and Wyoming. As of December 31, 2008, it owned interests in approximately 41,200 producing natural gas and oil wells; and had 12.051 trillion cubic feet equivalent of proved reserves. The company was founded in 1989 and is based in Oklahoma City, Oklahoma.

China Petroleum & Chemical Corporation, through its subsidiaries, operates as an integrated oil and gas, and chemical company in the Peoples Republic of China and Hong Kong. The company engages in the exploration, production, storage, transportation, and sale of crude oil, natural gas, and petrochemical and other chemical products; refining of petroleum products; wholesale of gasoline, kerosene, and diesel; exploration, construction, installation, and maintenance of petroleum and petrochemical constructions and equipments; manufacture of electrical equipment; provision of research, development, application, and consulting services in the areas of information technology and alternative energy products; and self-run and representation import and export of goods and technology. It also offers chemical products, such as basic organic chemicals, monomers and polymers for synthetic fiber, synthetic resin, synthetic rubber, and chemical fertilizers. The company was founded in 2000 and is based in Beijing, the Peoples Republic of China. China Petroleum & Chemical Corporation is a subsidiary of China Petrochemical Corporation.

Cimarex Energy Co. operates as an independent oil and gas exploration and production company. The company has operations primarily in the Mid-Continent region, which consists of Oklahoma, the Texas Panhandle, and southwest Kansas; the Permian Basin region of west Texas and southeast New Mexico; and the Gulf Coast.. Read More

CKX Lands, Inc. engages in the ownership and management of land and mineral interests located in southwest Louisiana. The companys activities consist of leasing its properties for minerals (oil and gas) and agriculture, as well as raising timber. It receives oil and gas royalties, agriculture rentals, and timber sales. As of December 31, 2008, CKX Lands, Inc. owned 10,903 net acres of land, including 6,902 acres of timberland, 3,014 acres of agricultural land, 740 acres of marsh land, and 247 acres of subdivision land. The company was formerly known as Calcasieu Real Estate & Oil Co., Inc. and changed its name to CKX Lands, Inc. in May 2005. CKX Lands, Inc. was founded in 1930 and is based in Lake Charles, Louisiana.

Clayton Williams Energy, Inc., an independent oil and gas company, engages in the exploration for and production of oil and natural gas properties primarily in Texas, Louisiana, and New Mexico. As of December 31, 2008, it had 6,704 gross producing oil and gas wells; leasehold interests in approximately 1.2.. Read More

CNOOC Limited, together with its subsidiaries, engages in the exploration, development, production, and sale of crude oil, natural gas, and other petroleum products in offshore China. The companys oil and gas properties are located in offshore China, which include Bohai Bay, western south China Sea, eastern south China Sea, and east China Sea, as well as in Indonesia, Australia, and Africa. As of December 31, 2008, it had net proved reserves of 2.6 billion barrels of oil equivalent. The company was founded in 1982 and is headquartered in Central, Hong Kong. CNOOC Limited operates as a subsidiary of China National Offshore Oil Corporation.

Comstock Resources, Inc. engages in the acquisition, exploration, development, and production of oil and natural gas in the United States. It has onshore operations in the east Texas, north Louisiana, and south Texas regions, as well as in Mississippi, New Mexico, Kentucky, Oklahoma, Kansas, and the Mid-Continent region. As of December 31, 2008, the companys oil and natural gas properties had proved reserves of 581.7 billion cubic feet of natural gas equivalent and owned interests in 1,693 oil and natural gas producing wells. The company was founded in 1919 and is based in Frisco, Texas.

Contango Oil & Gas Company engages in the exploration, development, production, and acquisition of oil and natural gas liquids primarily offshore in the Gulf of Mexico. The company also holds interests in an alternative energy company. It has alliance with Juneau Exploration, L.P. for assembling natural gas and.. Read More

Continental Energy Corporation, together with its subsidiaries, engages in the acquisition, exploration, and development of oil and gas properties in Indonesia. The company, formerly known as Continental Copper Corporation, was founded in 1984 and is based in Dallas, Texas.

CREDO Petroleum Corporation, together with its subsidiaries, engages in the acquisition, exploration, development, and marketing of oil and gas in the Mid-Continent and Rocky Mountain regions in the United States. It operates projects in Texas, central Kansas, Wyoming, Colorado, Louisiana, and North Dakota. The.. Read More

Crimson Exploration, Inc., together with its subsidiaries, engages in the acquisition, development, exploitation, and exploration of oil and natural gas properties, primarily in the onshore U.S. Gulf Coast and South Texas regions. The company also has operations and prospective acreage in the Denver Julesburg.. Read More

Croff Enterprises, Inc. does not have significant operations. Previously, it operated as an independent energy company engaged in the business of oil and natural gas production, primarily through ownership of perpetual mineral interests and the acquisition of producing non-operated oil and gas leases. The company.. Read More

Crosstex Energy, L.P., through its subsidiary Crosstex Energy Services, L.P., operates as an independent midstream energy company. It operates in two segments, Midstream and Treating. The Midstream segment focuses on the gathering, processing, transmission, and marketing of natural gas and natural gas liquids in.. Read More

Daleco Resources Corporation, through its subsidiaries, engages in the exploration, development, and production of oil and gas; exploration and development of naturally occurring minerals; and the marketing and sale of such minerals and of patented products utilizing the companys minerals. The company owns and.. Read More

Delta Petroleum Corporation engages in the exploration, acquisition, development, production, and sale of natural gas and crude oil in the United States. It owns producing and non-producing oil and natural gas interests, undeveloped leasehold interests, and related assets in 17 states, as well as interests in a.. Read More

Denbury Resources, Inc. engages in the acquisition, development, operation, and exploration of oil and natural gas properties in the Gulf Coast region of the United States, primarily in Louisiana, Mississippi, Alabama, and Texas. It owns reserves of carbon dioxide (CO2) used for tertiary oil recovery east of the.. Read More

Desert Mining, Inc. engages in the acquisition and exploration of oil and gas leases. As of December 31, 2007, it had 6,159 Federal acres and 18,279 State acres of oil and gas leases. The company, formerly known as Holidays of America, Inc., was founded in 1979 and is based in Longmont, Colorado.

Devon Energy Corporation, together with its subsidiaries, primarily engages in oil and gas exploration, development, and production; the transportation of oil, gas, and natural gas liquids; and the processing of natural gas. The company owns oil and gas properties principally in the Mid-Continent area of the.. Read More

Double Eagle Petroleum Co., an energy company, engages in the exploration, development, production, and sale of natural gas and crude oil primarily in the Rocky Mountain Basins of the western United States. The companys principal properties include the Atlantic rim coal bed natural gas project located in south central Wyoming; the Pinedale Anticline property in the Green River basin of Wyoming; the Wind River basin in central Wyoming; the Moxa Arch and other areas located in southwest Wyoming; and the Christmas Meadows prospect in Utah. It also engages in the transportation of gas through its intrastate gas pipeline. As of December 31, 2008, the company had estimated proved reserves of approximately 86.3 billion cubic feet of natural gas and approximately 420 thousand barrels of oil. It also owned interests in a total of 1,125 producing wells and had an interest in 525,493 gross acres natural gas prone basins of the Rocky Mountains. The company was founded in 1972 and is headquartered in Casper, Wyoming.

Edge Petroleum Corporation, an independent oil and natural gas company, engages in the acquisition, exploration, development, and production of crude oil and natural gas resources in the United States. The company conducts its operations along the onshore United States Gulf Coast, primarily in south Texas,.. Read More

Ember Resources Inc.: Development of coal bed methane resources in Alberta. Rosalind properties southeast of Edmonton AB; Manola properties northwest of Edmonton AB; Fenn Big Valley properties northeast of Calgary AB; Matziwin properties east of Calgary AB. Common shares listed on the Toronto Stock Exchange;.. Read More

Empire Energy Corporation International, through its subsidiary, Great South Land Minerals Limited, engages in the exploration and development for petroleum/natural gas in Tasmania, Australia. It has interest in an onshore petroleum license comprising 30,356 square kilometers in Tasmania Basin. The company also.. Read More

Empire Petroleum Corporation engages in the exploration and development of oil and gas interests. It holds working interests in Cheyenne River prospect in Niobrara County, Wyoming; overriding royalty interests in oil and gas leases located in or near the Cheyenne River prospect; and working interest in Gabbs.. Read More

Enbridge Energy Management, L.L.C., through its partnership interests in Enbridge Energy Partners, L.P., owns and operates crude oil and liquid petroleum transportation and storage assets in the United States. It also owns and operates natural gas gathering, treating, processing, transportation, and marketing.. Read More

EnCana Corporation engages in the exploration, production, and marketing of natural gas, crude oil, and natural gas liquids. The company owns interests in various Canadian property areas, principally comprising Suffield, Brooks North, Langevin, Drumheller, Pelican Lake, and Weyburn located in Alberta and.. Read More

Encore Acquisition Company engages in the acquisition and development of oil and natural gas reserves from onshore fields in the United States. It holds interests in various properties located in the Cedar Creek Anticline (CCA) in the Williston Basin of Montana and North Dakota; the Permian Basin of west Texas.. Read More

Endeavour International Corporation, an independent energy company, focuses on the acquisition, exploration, and development of energy reserves in the North Sea and United States. The company has three major development projects in the United Kingdom sector of the North Sea and an exploration campaign onshore.. Read More

EnDevCo, Inc., together with its subsidiaries, engages in the exploration, development, and production of oil and gas in the United States and South America. It holds development rights in two blocks in the Gulf of Mexico; and has agreement for exploration rights in the Rio Magdalena Valley of Colombia and Block.. Read More

Energy Partners, Ltd. engages in the exploration and production of oil and natural gas in the United States. It primarily focuses on the areas of Gulf of Mexico Shelf and the deepwater Gulf of Mexico, as well as the Gulf Coast onshore region. As of December 31, 2007, the company had interests in 24 producing.. Read More

Enterprise Products Partners L.P., a midstream energy company, provides services to producers and consumers of natural gas, natural gas liquids (NGL), crude oil, and petrochemicals in the continental United States, Canada, and Gulf of Mexico. The company also develops pipeline and other midstream energy.. Read More

Enterra Energy Trust, through its direct and indirect subsidiaries, operates as an oil and gas income trust in Canada. It develops, exploits, and acquires crude oil and natural gas wells. The trusts principle areas of operations include the Peace River Arch area of Alberta and central Alberta in Canada. The.. Read More

EOG Resources, Inc., together with its subsidiaries, engages in the exploration, development, production, and marketing of natural gas and crude oil primarily in the United States, Canada, Trinidad, the United Kingdom North Sea, and China. As of December 31, 2008, the companys total estimated net proved reserves were 8,689 billion cubic feet equivalent (Bcfe), of which 7,339 billion cubic feet were natural gas reserves and 1,350 Bcfe were crude oil, and condensate and natural gas liquids reserves. EOG Resources, Inc. was founded in 1985 and is based in Houston, Texas.

ERHC Energy, Inc. engages in the exploration and exploitation of oil and gas reserves in the Gulf of Guinea offshore of central West Africa. It has rights to working interests in exploration acreage in the Joint Development Zone (JDZ) between the Democratic Republic of Sao Tome & Principe and the Federal Republic.. Read More

Evolution Petroleum Corporation engages in the acquisition, exploitation, and development of properties for the production of crude oil and natural gas in Louisiana, the United States. As of July 1, 2008, it had proved reserves of 4,018,233 barrels of oil equivalent. The company, formerly known as Natural Gas.. Read More

EXCO Resources, Inc., an independent oil and natural gas company, engages in the acquisition, development, and exploitation of onshore oil and natural gas properties. Its operations are focused on the North American oil and natural gas areas, including the east Texas/north Louisiana, Appalachia, mid-continent, and Permian. The company also involves in midstream operations in the east Texas/north Louisiana area. As of December 31, 2008, EXCO Resources proved reserves were approximately 1.9 trillion cubic feet equivalent. It also operated 11,973 gross wells. The company was founded in 1955 and is based in Dallas, Texas with additional offices in Akron, Ohio; Tulsa, Oklahoma; Cranberry Township, Pennsylvania; and The Woodlands, Texas.

Exile Resources Inc.: Acquisition, exploration and development of oil and gas properties. Right to earn 52.5% working interest in Brazeau River oil and gas exploration property southwest of Edmonton AB; 85% working interest in properties offshore of Ghana and 50% working interest in properties in Cameroon.. Read More

Falcon Natural Gas Corp., an exploration stage company, engages in the exploration of natural gas. It holds a 100% net working interest and a 70% net revenue interest on Starr County Property leases; and a 100% working interest and the 70% net revenue interest in oil, gas, and mineral leases in St. Mary Parish,.. Read More

Far East Energy Corporation, together with its subsidiaries, engages in the acquisition, exploration, and development of coalbed methane gas properties in the Peoples Republic of China. As of December 31, 2007, the company had approximately 265,000 gross acres in the Yunnan Province, and approximately 1,058,000.. Read More

FEC Resources, Inc. engages in the acquisition, exploration, and development of natural resource and mineral properties. The company, through its interest in various companies, is pursuing exploration and development opportunities for oil, natural gas, iron ore, gold, and coal in the Philippines. FEC Resources,.. Read More

FieldPoint Petroleum Corporation has been involved in the exploration and production of oil and gas properties. The Company primarily focuses its activities in Oklahoma, Texas and Wyoming. The Company derives its revenue from sales of gas and oil and operations on its properties.

Foothills Resources, Inc., through its subsidiaries, engages in the acquisition, exploration, and development of oil and natural gas properties in the United States. The company holds interests in the Eel River Basin located in the northern California and the Anadarko Basin located in southwest Oklahoma. It also.. Read More

Forest Oil Corporation engages in the acquisition, exploration, development, and production of natural gas and liquids primarily in North America. The company principally sells natural gas on a month-to-month basis in the spot market under short-term contracts. As of December 31, 2008, its proved reserves were.. Read More

Galaxy Energy Corporation, an independent oil and gas company, engages in the lease acquisition, exploration, development, and production of crude oil and natural gas in the western United States. It has operations in the Piceance Basin of western Colorado; and the Powder River Basin located in Wyoming and.. Read More

Gasco Energy, Inc. operates as a natural gas and petroleum exploitation, development, and production company. The company engages in locating and developing hydrocarbon resources primarily in the Rocky Mountain region. It acquires leasehold interests in petroleum and natural gas rights, and exploits and develops.. Read More

GeoPetro Resources Company, an oil and gas company, together with its subsidiaries, engages in the exploration for, and leasehold acquisition, development drilling, and production of crude oil and natural gas reserves in North America, Australia, and Indonesia. The companys projects encompass approximately.. Read More

GeoResources, Inc., an independent oil and gas company, engages in the acquisition, development, and production of/exploration for crude oil, natural gas, and related products primarily in Texas, Louisiana, Oklahoma, North Dakota, Montana, and Colorado. As of December 31, 2008, the company had estimated proved.. Read More

GMX Resources Inc., together with its subsidiaries, engages in the exploration, development, and production of properties for the production of crude oil and natural gas in Texas, Louisiana, and New Mexico. The companys drilling, development, and production activities primarily focus on the Cotton Valley Sands in the Sabine Uplift of the Carthage, North Field of Harrison and Panola counties of east Texas. As of December 31, 2008, it had proved reserves of 464.2 billion cubic feet of natural gas equivalent and 236 net producing wells. The company was founded in 1998 and is headquartered in Oklahoma City, Oklahoma.

Goodrich Petroleum Corporation engages in the exploration, exploitation, development, and production of oil and natural gas properties in the Cotton Valley trend and Haynesville Shale play of East Texas and Northwest Louisiana. The company offers drilling activities and holds interests in various areas, including.. Read More

Gran Tierra Energy Inc., an independent energy company, engages in the exploration, development, and production of oil and gas in Colombia, Argentina, and Peru. The company was founded in 2005 and is headquartered in Calgary, Canada.

Grey Wolf Exploration Inc.: Development and production of natural gas and crude oil in the Western Canadian Sedimentary Basin. Working interests in Caroline natural gas property in west central Alberta; working interests in Knopcik, Pouce Coupe, and Valhalla natural gas properties in the Peace River Arch area of.. Read More

Gulfport Energy Corporation engages in the exploration, development, and production of oil and gas in the Louisiana Gulf Coast in the West Cote Blanche Bay and Hackberry fields. The company also has interests in properties located in West Texas in the Permian Basin, as well as in the Alberta oil sands in Canada... Read More

Hallador Petroleum Company, through its subsidiary, Sunrise Coal, LLC, engages in the production and sale of coal in the United States. The company owns a 80% interest in the Carlisle coal mine located in western Indiana. It also holds a 45% interest in Savoy Energy, L.P., an oil and gas company that has.. Read More

Harvest Natural Resources, Inc., an independent energy company, engages in the acquisition, exploration, development, production, and disposition of oil and natural gas properties. The company, through its subsidiary Harvest Vinccler, S.C.A., has interests in the Bolivarian Republic of Venezuela; and through its.. Read More

Highpine Oil & Gas Limited: Exploration for, acquisition of, development of, and production of natural gas and crude oil in western Canada. Producing assets and exploration activities in the Pembina/Nisku area of central Alberta, the Joffre/Gilby area of central Alberta, and the Bantry/Retlaw area of southern.. Read More

HKN, Inc., together with its subsidiaries, engages in the exploration, exploitation, development, and production of oil and gas properties primarily in the onshore and offshore Gulf Coast regions of south Texas and Louisiana. The company also explores and develops coal bed methane in Indiana and Ohio. As of.. Read More

Index Oil and Gas, Inc. engages in the acquisition, exploration, appraisal, development, production, and sale of oil and gas properties, primarily in Kansas, Louisiana, and Texas. As of March 31, 2008, the companys estimated total proved oil and gas reserves were approximately 219.469 thousands of barrels of oil.. Read More

Isramco, Inc., together with its subsidiaries, engages primarily in the acquisition, development, production, and exploration of oil and natural gas properties primarily in the United States. The company owns various working interests in oil and gas wells in Louisiana, Texas, New Mexico, Oklahoma, Wyoming, Utah,.. Read More

Kerr-McGee Corporation operates as an independent oil and natural gas exploration and production company in the United States. The company acquires leases and concessions, as well as explores, develops, produces, and markets crude oil and natural gas. It explores for oil and gas in onshore in the United States,.. Read More

Kestrel Energy, Inc. operates as an oil and gas exploration and production company. It acquires interests in proved developed producing oil and gas leases; and conducts exploratory and developmental drilling in the United States. The company owns oil and gas interests in the states of Louisiana, New Mexico,.. Read More

Linn Energy, LLC, through its subsidiaries, engages in the development and acquisition of gas and oil properties in the United States. The company has oil and gas, and natural gas reserves in Mid-Continent, which includes the Texas Panhandle operating area; and Western region comprising the Brea Olinda field of.. Read More

Lucas Energy, Inc., through its subsidiary, operates as an independent oil and gas company. The company engages in the exploration and production of oil and natural gas. It focuses on building and revitalizing a diversified portfolio of oil and gas production assets located in Texas, as well as seek to acquire.. Read More

Magellan Petroleum Corporation and its subsidiaries engage in the sale of oil and gas, and exploration and development of oil and gas reserves primarily in Australia and Canada. Its properties primarily include an interest in the Palm Valley gas field and in the Mereenie oil and gas field in the Amadeus Basin of.. Read More

Martin Midstream Partners L.P. engages in the collection, transportation, storage, and marketing of petroleum products and by-products in the United States Gulf Coast region. The company operates through four segments: Terminalling and Storage, Natural Gas Services, Marine Transportation, and Sulfur Services. The.. Read More

Shi Corp. does not have significant operations. The company seeks possible merger and acquisition opportunities. Previously, it engaged in the acquisition, development, exploration for, and sale of oil and gas in the state of Texas. The company was formerly known as Matrix Energy Services Corporation and changed.. Read More

Maverick Oil and Gas, Inc. does not have significant operations. The company intends to identify a business combination with an operating company. Prior to January 8, 2008, it was engaged in the exploration, exploitation, development, and production of oil and gas properties in the United States. The company was.. Read More

McMoRan Exploration Co., through its subsidiary, McMoRan Oil & Gas LLC, engages in the exploration, development, and production of oil and natural gas offshore in the Gulf of Mexico and onshore in the Gulf Coast area. It also engages in the incorporation of 3-D seismic interpretation, offshore drilling to total.. Read More

The Meridian Resource Corporation, together with its subsidiaries, explores for, acquires, develops, and produces oil and natural gas reserves, primarily located onshore in south Louisiana and Texas; and offshore in the Gulf of Mexico. As of December 31, 2008, it had proved reserves of 80 billion cubic feet.. Read More

Mexco Energy Corporation, together with its subsidiaries, engages in the acquisition, exploration, development, and production of oil and gas properties in the United States. It explores for and develops natural gas, crude oil, and condensate and natural gas liquids primarily in west Texas. As of March 31, 2008,.. Read More

National Energy Group, Inc. does not have significant operations. The company intends to acquire or merge with other operating businesses. Prior to November 2006, it engaged in the exploration, development, production, and operation of oil and natural gas properties primarily in Texas, Oklahoma, Arkansas, and.. Read More

Ness Energy International, Inc. is engaged in the acquisition, either alone or with others, of interests in proved or unproved oil and gas leases, and exploratory and development drilling. This includes but, is not limited to exploitation, development, and well service management. The Company presently owns oil.. Read More

Newfield Exploration Company, an independent oil and gas company, engages in the exploration, development, and acquisition of natural gas and crude oil properties. As of December 31, 2008, it owned working interests in approximately 750,000 gross acres and 2,000 gross producing wells in Anadarko and Arkoma Basins; an interest in approximately 1.2 million gross acres and approximately 1,950 gross producing wells in the Rocky Mountains; interests in approximately 400,000 gross acres and approximately 1,000 gross producing wells in onshore Texas; and interests in 76 leases in deepwater with approximately 438,000 gross acres and 26 leases on the shelf. The company also had proved reserves of approximately 2.95 trillion cubic feet equivalent. In addition, it has operations in Malaysia and the Peoples Republic of China. The company was founded in 1988 and is based in Houston, Texas.

Nexen, Inc. operates as an energy and chemicals company. The company engages in the exploration, development, and production of crude oil and natural gas in western Canada, the United States Gulf of Mexico, Yemen, the North Sea, offshore west Africa, Colombia, and Australia. It also produces synthetic crude oil.. Read More

Noble Energy, Inc., through its subsidiaries, engages in the acquisition, exploration, development, production, and marketing of crude oil, natural gas, and natural gas liquids in the United States and internationally. The company operates and holds interests in properties, including Wattenberg field and Piceance.. Read More

Oakridge Energy, Inc. engages in the exploration for, development, production, and sale of oil and gas primarily in Texas. The company owns a 25% working interest in the BSR field consisting of 24 producing wells in Madison County, Texas. It also owns interest in a gravel property, which consists of gas, coal,.. Read More

Occidental Petroleum Corporation, together with its subsidiaries, operates as an oil and gas exploration and production company. The company has three segments: Oil and Gas; Chemical; and Midstream, Marketing, and Other. The Oil and Gas segment engages in the exploration, development, production, and marketing of.. Read More

Oilexco Incorporated: Exploration for and production of oil and gas. Interests in Balmoral and Glamis producing oilfields offshore of the United Kingdom in the central North Sea; development of oil licences in the Outer Moray Firth Basin offshore of the United Kingdom in the North Sea; development of natural gas.. Read More

Panhandle Oil and Gas, Inc. engages in the acquisition, management, and development of oil and gas properties. Its mineral properties and other oil and gas interests are located in the United States, primarily in Arkansas, Kansas, Oklahoma, New Mexico, and Texas. As of September 30, 2008, the company held royalty.. Read More

Parallel Petroleum Corporation engages in the acquisition, development, and exploration of oil and natural gas reserves in Texas and New Mexico. Its operations are primarily located in the Permian Basin of west Texas and New Mexico, the Fort Worth Basin of north Texas, and the onshore Gulf Coast area of south Texas. The companys principal natural gas projects include the Barnett Shale gas project in Tarrant County, Texas; and Wolfcamp gas project in Eddy and Chavez counties, New Mexico. It also owns interests in producing properties in the Permian Basin of west Texas, which include Diamond M Canyon Reef Unit & Shallow Leases in Scurry County, Texas; the Carm-Ann San Andres Field and Harris San Andres Field in Andrews and Gaines Counties in Texas; and the Fullerton San Andres Field in Andrews County, Texas. In addition, Parallel Petroleum focuses on the Yegua/Frio/Wilcox and Cook Mountain gas projects located in Jackson, Wharton, and Liberty counties, Texas; East Texas Cotton Valley Reef Gas Project in Leon, Freestone, and Anderson Counties, Texas; and Utah/Colorado conventional oil & gas and heavy oil sands projects in Uinta Basin. As of December 31, 2008, the company had total proved reserves of approximately 21.2 MMBbls of oil and approximately 71.8 Bcf natural gas. Parallel Petroleum was founded in 1979 and is based in Midland, Texas.

Penn Virginia Corporation engages in the development, exploration, and production of natural gas and oil in east Texas, the Mid-Continent, Appalachia, Mississippi, and the Gulf Coast regions of the United States. The company operates in three segments: Oil and Gas, Coal and Natural Resource Management, and.. Read More

Petrohawk Energy Corporation engages in the exploration, development, and production of oil and natural gas properties in the United States. The company holds interests in various properties primarily located in North Louisiana, Arkansas, South Texas, East Texas, Oklahoma and the Permian basin. As of December 31,.. Read More

Petrol Industries, Inc. engages in the acquisition, exploration, development, production and sale of oil, gas, and natural gas liquids primarily in the United States. It primarily operates in the Caddo Pine Island Field and the Shreveport Field located in Caddo Parish, Louisiana. As of December 31, 2004, the.. Read More

PetroQuest Energy, Inc. operates as an independent oil and gas company. It engages in the exploration, development, acquisition, and operation of oil and gas properties in Oklahoma, Arkansas, and Texas, as well as onshore and in the shallow waters offshore the Gulf Coast Basin. The company primarily evaluates the.. Read More

Petrostar Petroleum Corporation: Owner and operator of producing and exploration projects in Alberta and Saskatchewan, Canada. 100% interest and operator of 320 acre 5.2 million barrel Maidstone Property with 7 producing vertical wells and 20.5% ownership of patented vertical and horizontal oil and gas drilling.. Read More

Pioneer Natural Resources Company engages in the exploration and production of oil and gas in the United States, South Africa, and Tunisia. It produces crude oil, natural gas, and natural gas liquids. The company primarily holds interests in the Spraberry field in the Permian Basin area; the Hugoton and West.. Read More

Plains Exploration & Production Company engages in the acquisition, development, exploration, and production of oil and gas properties primarily in the United States. The company owns interests in various oil and gas properties located in the Onshore and Offshore California; the Gulf of Mexico; the Gulf Coast.. Read More

PrimeEnergy Corporation engages in the acquisition, exploration, development, and production of crude oil and natural gas. The Company owns leasehold, mineral, and royalty interests in producing and non-producing oil and gas properties in Colorado, Kansas, Louisiana, Mississippi, Montana, Nebraska, New Mexico,.. Read More

Pyramid Oil Company engages in the exploration, development, and production of crude oil and natural gas resources. The company holds oil and gas property interests primarily in California, as well as in New York, Wyoming, and Texas. It sells oil and gas primarily to crude oil purchasers, refineries, or pipeline.. Read More

Questar Corporation, a natural gas-focused energy company, through its subsidiaries, engages in gas and oil exploration and production, midstream field services, energy marketing, interstate gas transportation, and retail gas distribution businesses. The company acquires, explores for, develops, and produces.. Read More

Quicksilver Resources Inc., an independent energy company, engages in the acquisition, exploitation, exploration, development, production, and sale of natural gas, natural gas liquids, and crude oil in North America. It also involves in marketing, processing, and transmission of natural gas. The company has.. Read More

Radial Energy, Inc., an exploration stage company, engages in the acquisition, exploration, development, and production of oil and gas projects. It holds interest in Huaya Anticline project, a block 100 oil prospect located in the Ucayali Basin, Peru; and Bosques block, comprising approximately 9,000 hectares.. Read More

RAM Energy Resources, Inc., an independent oil and natural gas company, engages in the acquisition, development, exploitation, exploration, and production of oil and natural gas properties primarily in Texas, Louisiana, Oklahoma, New Mexico, and West Virginia. The company operates in the upstream segment of the.. Read More

Rancher Energy Corp. engages in the development, production, and marketing of oil and gas in North America. It operates three fields, including the South Glenrock B Field, the Big Muddy Field, and the Cole Creek South Field in the Powder River Basin, Wyoming in the Rocky Mountain region of the United States. The.. Read More

Range Resources Corporation, an independent oil and gas company, engages in the exploration, development, and acquisition of oil and gas properties primarily in the southwestern, Appalachian, and Gulf Coast regions of the United States. The companys southwestern operations include the Barnett Shale of north central Texas, the Permian Basin of west Texas, and eastern New Mexico, as well as the East Texas Basin, the Texas Panhandle, and the Anadarko Basin of western Oklahoma. Its Appalachian operations include tight-gas, shale, coal bed methane, and conventional oil and gas production in Pennsylvania, Virginia, Ohio, New York, and West Virginia. The companys Gulf Coast operations include Texas, Louisiana, and Mississippi. It sells gas to utilities, marketing companies, and industrial users. As of December 31, 2008, Range Resources Corporation had 2.7 Tcfe of proved reserves. It also owns and operates 5,255 miles of gas gathering pipelines in Appalachia, which transport gas to transmission lines, and directly to end-users and interstate pipelines. The company was formerly known as Lomak Petroleum, Inc. and changed its name to Range Resources Corporation in 1998. Range Resources Corporation was founded in 1975 and is headquartered in Fort Worth, Texas.

The Reserve Petroleum Company engages in the exploration and development of oil and natural gas properties. The company owns non-producing mineral interests in approximately 263,567 gross acres located in the north and south central United States. As of December 31, 2007, it had proved developed and undeveloped.. Read More

Richards Oil & Gas Limited: Acquisition and exploration of coal bed methane and conventional oil and gas projects in Canada and the United States. Coal bed methane exploration projects in central and western Alberta and in the Tulameen Basin of British Columbia; producing oil and gas wells and exploration.. Read More

Rocky Mountain Minerals, Inc. engages in the acquisition, licensing, development, exploration, and operation of mineral resource properties in the United States and Australia. It primarily owns interests in two petroleum exploration permits, WA-322-P and WA-329-P, covering approximately 356,000 acres located in.. Read More

Rosetta Resources Inc., an independent oil and gas company, engages in the acquisition, exploration, development, and production of oil and gas properties in North America. It primarily operates in the Sacramento Basin of California; the Rockies; the Lobo and Perdido Trends in South Texas; the State Waters of.. Read More

Royale Energy, Inc. operates as an independent oil and natural gas producer in the United States. It engages in the production and sale of oil and natural gas; acquisition of oil and gas lease interests and proved reserves; drilling of exploratory and development wells; and sale of working interests in wells to.. Read More

An exploration stage company, engaged in the acquisition and exploration of resource properties.

Sky Petroleum, Inc. engages in the exploration and development of oil and natural gas properties of others under arrangements in which, the company finances the costs in exchange for interests in the oil or natural gas revenue generated by the properties. It has a participation agreement with Buttes Gas and Oil.. Read More

Solana Resources Limited: Acquisition of oil and gas properties and undertaking of exploration and production activities on these properties. 70% interest in Salinas oil and gas exploration block in northeast Colombia; 18.75% to 33.75% interests in Alamo, Guariquies, Guayabillas, Puma and Zeus oil and gas.. Read More

Sonoran Energy, Inc., an independent oil and gas company, engages in the acquisition, development, production, and exploration of oil and gas properties primarily in North America. The company holds various working interests in eight production wells, four associated salt water disposal wells one located in.. Read More

Southwestern Energy Company engages in the exploration, development, and production of natural gas and crude oil in the United States. The company operates in two segments, Exploration and Production, and Midstream Services. The Exploration and Production segment involves in the development of the unconventional gas reservoir located on the Arkansas side of the Arkoma Basin, as well as exploration and production activities in Oklahoma, Texas, and Pennsylvania. This segment also engages in conventional drilling programs in the Arkansas part of the Arkoma Basin; and conducts development drilling and exploration programs in the Oklahoma portion of the Arkoma Basin, Texas and Pennsylvania, as well as operates drilling rigs in the Fayetteville Shale play and in East Texas. The Midstream Services segment engages in the marketing of its own gas production, as well as third party natural gas; and transportation of natural gas. As of December 31, 2008, the companys estimated proved natural gas and oil reserves were approximately 2,185 billion cubic feet of gas equivalent. Southwestern Energy Company was founded in 1929 and is based in Houston, Texas.

Spindletop Oil & Gas Co., an independent oil and gas company, engages in the exploration, development, and production of oil and natural gas in the United States. The company, through its subsidiaries, holds approximately 90,873 gross acres under lease in six states. It also engages in renting oilfield.. Read More

St. Mary Land & Exploration Company, together with its subsidiaries, engages in the exploration, exploitation, development, acquisition, and production of natural gas and crude oil in North America. The company primarily operates in the ArkLaTex, the Mid-Continent, the Gulf Coast, the Permian, and the Rocky.. Read More

Standard Energy Corporation engages in the acquisition and resale of unproven oil and gas leaseholds. It also provides various oil and gas leasehold services, as well as receives royalty income from leasehold interests. The company obtains leases through purchases in competitive bidding programs offered by.. Read More

Stone Energy Corporation engages in the acquisition, exploration, development, operation, and production of oil and gas properties located in the Gulf of Mexico and Appalachia region. As of December 31, 2008, the company had estimated proved oil and natural gas reserves of approximately 518.9 Bcfe. Stone Energy.. Read More

Suncor Energy, Inc., together with its subsidiaries, operates as an integrated energy company in Canada. It operates through four segments: Oil Sands, Natural Gas, Energy Marketing and Refining, and Refining and Marketing. The Oil Sands segment recovers bitumen, primarily through oil sands mining and in-situ.. Read More

Swift Energy Company engages in developing, exploring, acquiring, and operating oil and natural gas properties in Louisiana and Texas. As of December 31, 2008, the company had estimated proved reserves of 116.4 million barrels of oil equivalent. Swift Energy was founded in 1979 and is headquartered in Houston,.. Read More

Talisman Energy Inc., an upstream oil and gas company, engages in the exploration, development, production, transportation, and marketing of crude oil, natural gas, and natural gas liquids (NGLs) in primarily North America, the United Kingdom, Scandinavia, and the Southeast Asia. The company was founded in 1925.. Read More

Texas Vanguard Oil Company engages in the acquisition, exploration, development, and operation of onshore oil and gas properties in the United States. It owns interests in producing properties, and undeveloped oil and gas leases located in Texas, Wyoming, Oklahoma, Nebraska, and New Mexico. The company sells its.. Read More

Toreador Resources Corporation, together with its subsidiaries, engages in oil and natural gas exploration, development, production, leasing, and acquisition activities. The company holds the right to explore and develop oil and natural gas properties in offshore and onshore Turkey, Hungary, Romania, and France... Read More

Trans Energy, Inc. engages in the exploration, development, exploitation, production, transportation, and marketing of natural gas and crude oil in the United States. It has approximately 25,638 gross acres under lease in West Virginia, primarily in the counties of Wetzel, Marion, and Doddridge. The company also.. Read More

TransGlobe Energy Corporation engages in the exploration, development, and production of crude oil, natural gas liquids, and natural gas the Arab Republic of Egypt and the Republic of Yemen. It has interests in two production sharing concessions in Egypt; and five production sharing agreements in Yemen. The.. Read More

TXCO Resources Inc., an independent energy company, engages in the acquisition, exploration, exploitation, development, and production of oil and gas properties. It also operates, directs, and drills oil and gas wells, as well as participates in non-operated wells. The company owns interests in the Maverick Basin.. Read More