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. engages in the acquisition, exploration, development, and production of crude oil and natural gas reserves in the western United States. It owns a 92.5% working interest in the Fetter project covering approximately 53,000 leased net acres located in Powder River Basin, Wyoming; a 39.1%.. 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. It markets natural gas, crude oil, condensate, and oil and natural gas liquids (NGLs), as well as owns and operates gas gathering and.. Read More

Apache Corporation, an independent energy company, engages in the exploration, development, and production of crude oil, natural gas, 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. Its principal asset includes a 52.79% joint venture interest in the Entre Lomas concession located in the provinces of Rio Negro and Neuquen in southwest Argentina. As of December 31, 2007, Apco Argentina had.. Read More

Aspen Exploration Corporation engages in the exploration, development, and production of oil and gas properties in California and Montana. Its properties include working interests in 16 wells located in the West Grimes Field, Colusa County, California; a 30% working interest in The Nelson #1-10 well located in.. 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 Dutch Sectors of the North Sea, and the United Kingdom. As of December 31, 2007, the company had leasehold and other interests in 76 offshore blocks, 40 platforms, and 127.. 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 includes the Dunvegan Unit located in Alberta. The company also holds interests in Red Earth,.. 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 company owns and operates working interests in 38 properties located in the South Midway-Sunset field; the diatomite oil project in California; the Poso.. Read More

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.. Read More

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 in the United States. It owns property interests in the Onshore Gulf Coast consisting of the Vicksburg trend in Brooks County, Texas; the Frio trend in and around Matagorda County, Texas; and joint venture.. Read More

Cabot Oil & Gas Corporation and its subsidiaries engage in the development, exploitation, exploration, production, and marketing of oil and gas properties in North America. Its principal areas of operation include the Appalachian Basin; onshore Gulf Coast comprising south and east Texas and north Louisiana; the.. 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 exploration, development, acquisition, and production of oil and gas properties. Its properties are primarily located in Louisiana and offshore Gulf of Mexico. The company owns interests in Entrada, Garden Banks Blocks; Medusa, Mississippi Canyon Blocks; and Habanero,.. Read More

Canadian Natural Resources Limited, together with its subsidiaries, engages in the acquisition, exploration, development, production, marketing, and sale of crude oil, natural gas liquids, natural gas, and bitumen. It also provides midstream activities that include pipeline operations and an electricity.. 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 company’s proved.. Read More

Carrizo Oil & Gas, Inc., together with its subsidiaries, engages in the exploration, development, and production of natural gas and oil. The company focuses on proven and producing natural gas and oil geologic trends in the Barnett Shale area in North Texas and along the onshore Gulf Coast area in Texas and.. 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., an exploration stage company, engages in the acquisition, exploration, and development of oil and gas properties in the United States. The company owns a 100% working interest in Wilcox 105 and Miocene 101 prospects comprising 32 leases totaling 1,224 gross acres situated in Beauregard.. Read More

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 markets natural gas and oil for other working interest owners in.. Read More

China Petroleum & Chemical Corporation, through its subsidiaries, operates as an integrated oil and gas, and chemical company in the People's Republic of China and Hong Kong. Its oil and gas operations include exploring for, developing, and producing crude oil and natural gas; transporting crude oil, natural gas.. Read More

Cimarex Energy Co. operates as an independent oil and gas exploration and production company. It has operations primarily in Texas, Oklahoma, New Mexico, Kansas, Louisiana, Wyoming, and Michigan. As of December 31, 2007, the company had approximately 1.5 Tcfe of proved oil and gas reserves, which included 1.1 Tcf.. Read More

CKX Lands, Inc. engages in the ownership and management of land and mineral interests located in Southwest Louisiana. The company's activities consist of leasing its properties for minerals (oil and gas), agriculture, as well as raising timber. It receives oil and gas royalties, agriculture rentals, and timber.. Read More

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, 2007, it had 6,694 gross producing oil and gas wells; leasehold interests in approximately 1.3.. 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 company's oil and gas properties are located in offshore China, which include Bohai Bay, western south China Sea, eastern.. Read More

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.. Read More

Contango Oil & Gas Company engages in the exploration, development, production, and acquisition of natural gas and oil properties primarily on offshore in the Gulf of Mexico, as well as in the Arkansas Fayetteville Shale. The company owns a 10% partnership interest in Freeport LNG Development, L.P., which.. Read More

Continental Energy Corporation, together with its subsidiaries, engages in the exploration and development of oil and gas properties in Indonesia. It owns interest in the Bengara-II Block covering an area of approximately 2,427 square kilometers located in East Kalimantan, Indonesia. The company was founded in.. Read More

CREDO Petroleum Corporation, through its subsidiaries, engages in the exploration for and the acquisition, development, and marketing of natural gas and crude oil in the Mid-Continent and Rocky Mountain regions in the United States. Its drilling activities are primarily located along the northern Anadarko Basin.. Read More

Crimson Exploration Inc. has been primarily engaged in the acquisition, development, exploitation, exploration and production of oil and natural gas. The Company is focused on the acquisition of interests in wells and leases that are currently producing crude oil and natural gas and that have the potential for.. 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 subsidiaries, operates as an independent midstream energy company. The company 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 Texas Gulf Coast 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 company's 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 15 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. The company primarily holds interests in the Barnett Shale area in north central.. 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 and its subsidiaries primarily engage 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 Permian Basin within Texas and New Mexico;.. 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 company's properties include the Atlantic rim coal bed natural gas project located in south central.. Read More

Edge Petroleum Corporation, an independent oil and natural gas company, engages in the exploration, development, acquisition, and production of crude oil and natural gas properties in the United States. The company conducts its o