Sundance Energy, Inc.
- Independent energy exploration company with interests in Australia and the US.
- http://www.sundanceenergy.net/

Enermax, Inc.
- Specializing in exploration and development, with operations focused in Texas and Louisiana.
- http://www.enermaxinc.com/

Future Petroleum Company LLC
- Independent oil and natural gas exploration and production company with domestic areas of operations in Texas, Oklahoma, Kansas, New Mexico, Colorado, Wyoming, and California
- http://www.futurepetro.com/

Canadian Natural Resources Ltd.
- An oil and natural gas exploration, development and production company based in Calgary, Alberta. Operations are focused in Western Canada, the North Sea and offshore West Africa.
- http://www.cnrl.com/

Granby Oil & Gas plc
- Oil and gas exploration, appraisal and development, primarily focused on the North Sea, Philippines, North Africa and the Middle East.
- http://www.granbyenterprises.com/

Red Rock Energy Partners
- A privately owned company engaged in the development of oil and gas reserves, with core properties in east Texas, western Louisiana and the Anadarko basin.
- http://www.redrockenergy.com/

Rex Energy Corporation
- An independent energy company engaged in the acquisition, production, exploration and development of oil and gas, with properties concentrated in the Appalachian, Illinois and Permian regions.
- http://www.rexenergy.com

Crown Exploration, Ltd
- Specializes in exploration and natural gas drilling with special emphasis on the Barnett Shale play of North Texas.
- http://www.crownexploration.com/

Chroma Energy, Inc.
- Utilizing proprietary seismic pattern imaging technology in parnerships with exploration organizations.
- http://www.chromaenergy.com/

Amadeus Energy Ltd
- An Australian publicly listed energy company with oil and gas production and exploration in the USA, and a biodiesel project in Australia. Features company profile, project details, and investor news.
- http://www.amadeusenergy.com/

Derek Oil & Gas Corporation
- Operates previously uneconomic heavy oil reservoirs using steam and gas assisted gravity drainage and low temperature oxidation technologies.
- http://www.derekoilandgas.com/

Antares Energy
- Australian-based, operating in Turkey, Australia, and in the Anadarko basin in Oklahoma and Kansas.
- http://www.antaresenergy.com/

Tethys Oil
- Swedish-base exploration and production company operating in Spain, Denmark, and Turkey.
- http://www.tethysoil.com/page.php?view=start_content&content=&lang=en

Petrogen International Ltd.
- Currently developing oil and gas reserves within the Texas Gulf Coast, Mississippi Salt Basin and the Wyoming Big Horn Basin.
- http://www.petrogencorp.com/

Petrohawk Energy Corporation
- Operating in the Permian basin, east Texas, Gulf coast, and off-shore Gulf of Mexico.
- http://www.petrohawk.com/

Mark L. Shidler Inc.
- Operations in Texas, Louisiana, Oklahoma, New Mexico, and Mississippi.
- http://www.marklshidlerinc.com/

Austral Pacific Energy Ltd.
- New Zealand company, operating in the Austral-Pacific region.
- http://www.austral-pacific.com/

Occidental Petroleum Corporation
- Engages in oil and gas exploration and production in the US and the Middle East. Its chemicals unit manufactures chloralkali products, PVC, and a range of performance products.
- http://www.oxy.com/

Douglas Oil & Gas
- Generating and developing natural gas prospects in the Appalachian and Permian Basins.
- http://www.douglasinc.com/

Devon Energy Corporation
- Oil and gas exploration, production and property acquisition (NYSE: DVN).
- http://www.devonenergy.com/

Gibraltar Energy Company
- Operating in the Black Warrior Basin of Northern Mississippi and Alabama.
- http://www.gibraltarenergy.com/

Tasman Exploration Ltd.
- Calgary-based private junior oil and gas exploration and production company.
- http://www.tasmanexploration.com/

Forum Energy Corporation
- Independent energy company listed on the NASD OTC Bulletin Board (FRUEF) and the Frankfurt and Munich Stock Exchanges (FE8).
- http://www.forumenergy.com/

Hyperdynamics Corporation
- Focused on oil and gas exploration, discover and produce commercially viable hydrocarbons and facilitate efficient seismic data management . Features information on products and services, investor data, technology center, and careers. ( OTC/BB:HYPD )
- http://www.hypd.com/

GSV, Inc.
- An oil and gas exploration company.
- http://gsv.com/

Greka Energy Corporation
- Explores for, acquires, develops and extracts oil and gas, and limestone. (Nasdaq: GRKA).
- http://www.grekaenergy.com/

Petroquest Energy Inc
- Explores and develops oil and gas producing properties onshore and offshore in the Gulf Coast region. (Nasdaq: PQUE).
- http://www.petroquest.com/

Stone Energy Corporation
- Independent oil and gas company.Includes corporate profile, investor information, and areas of operation. ( NYSE:SGY )
- http://www.stoneenergy.com/

Talisman Energy, Inc.
- Independent oil and gas exploration and production company. Includes corporate, financial, and investor data, company news, operating areas, and careers. ( NYSE: TLM )
- http://www.talisman-energy.com/

Forest Oil Corporation
- Explores for, develops, acquires, exploits and produces oil and natural gas, primarily in the Gulf of Mexico, Alaska, and Western Canada. Includes corporate data, investor center, and career opportunities. (Nasdaq: FST).
- http://www.forestoil.com/

Swift Energy Co., Inc.
- Oil and natural gas producer with operations in the USA and New Zealand. Based in Houston, TX 77060, USA. (NYSE:SFY; PCX:SFY)
- http://www.swiftenergy.com/

EOG Resources Inc.
- Engaged in the exploration and development, production and marketing of natural gas and crude oil . Features operations overview, career opportunities, and investor information. ( NYSE: EOG )
- http://www.eogresources.com/

Horizon Offshore, Inc.
- Provides marine construction services to the offshore oil and gas industry primarily in Gulf of Mexico. (Nasdaq: HOFF).
- http://www.horizonoffshore.com/

Patterson Energy, Inc.
- Performs onshore contract drilling of oil and gas wells. (Nasdaq: PTEN).
- http://www.patenergy.com/

North Coast Energy, Inc.
- Explores, develops and produces natural gas and oil. (Nasdaq: NCEB).
- http://www.northcoastenergy.com/

Santos, Ltd.
- Explores for, and develops oil and natural gas properties. (Nasdaq: STOSY).
- http://www.santos.com.au/

Energen Corporation
- Diversified energy company, focusing on natural gas distribution, and oil and gas exploration and production. (NYSE:EGN).
- http://www.energen.com/

Royale Energy, Inc.
- Explores for, develops and produces oil and natural gas. (Nasdaq: ROYL).
- http://www.royl.com/

ONEOK, Inc.
- Involved in oil and gas production, natural gas processing, gathering, storage and transmission in the mid-continent areas of the United States. Furthermore marketing and trading of natural gas. Based in Tulsa, OK 74102, USA. (NYSE:OKE)
- http://www.oneok.com/

EXCO Resources, Inc.
- Explores for and produces oil and natural gas. (Nasdaq: EXCO).
- http://www.excoresources.com/

Magellan Petroleum Corporation
- Explores for, develops and produces oil and gas. (Nasdaq: MPET).
- http://www.magpet.com/

Suncor Energy, Inc.
- Mines and sells oil and gas, operates retail shops under Sunoco brand, and supplies energy, both from oil/gas and renewable sources. Based in Calgary, Alberta, Canada T2P 2V5. (TSX:SU; NYSE:SU)
- http://www.suncor.com/

Texoil, Inc.
- Explores for, develops, and produces oil and natural gas. (Nasdaq: TXLI).
- http://www.texoil.com/

Toreador Resources Corporation
- Produces oil and gas through the ownership of mineral and royalty interests and working interests in mineral properties. (Nasdaq: TRGL).
- http://www.toreador.net/

Resource America, Inc.
- Performs real estate finance and equipment leasing. Owns energy operations, including natural gas and oil production. (Nasdaq: REXI).
- http://www.resourceamerica.com/

Delta Petroleum Corporation
- Acquires, explores for, develops and operates oil and gas properties and related business activities. (Nasdaq: DPTR).
- http://www.deltapetro.com/

Denbury Resources, Inc.
- Independent oil and natural gas producer.
- http://www.denbury.com/

Berry Petroleum Co.
- Independent oil producer located in southern California. (NYSE: BRY)
- http://www.bry.com/

Essar Oil Limited
- Offshore and onshore exploration and production in India. Bombay High production.
- http://www.essar.com

Icon Energy, Limited
- Australian company, operating in the Cooper-Eromanga and Surat-Bowen Basins of Queensland, Australia.
- http://www.iconenergy.com/

Questar Corporation
- An energy developer engaged in oil and gas exploration and production, gas processing and gathering, gas and liquids trading, interstate gas transmission and storage, retail gas distribution, and telecommunications and information technologies. (NYSE: ST
- http://www.questarcorp.com/

Pan Pacific Petroleum NL
- Australian mining company with projects in the Taranaki and Carnarvon Basin.
- http://www.panpacpetroleum.com.au/

Anglo-Suisse Offshore Partners, LLC
- ASOP is a Houston-based independent oil and gas company focused on the acquisition and exploitation of producing assets domestically and abroad.
- http://www.anglosuisse.com/

Lukoil Overseas Holding Ltd.
- Subsiderary of Lukoil that is responsible for managing the company's international oil and gas projects.
- http://www.lukoil-overseas.com

Energy Africa
- Production in Congo, Equatorial Guinea, Gabon, South Africa and the United Kingdom. Has petroleum interests in 11 countries in sub-Saharan and North Africa.
- http://www.energyafrica.com/

Sterling Energy
- Holds equity interest in Gulf of Mexico gas leases. Exploring offshore Philippines.
- http://www.sterlingenergyplc.com

Strike Oil NL
- Australian company seeking oil, gas and coalbed methane in six Australian sedimentary basins.
- http://www.strikeoil.com.au

Norwood Resources Ltd. - Oil and gas exploration
- Canadian company exploring in Texas and Alabama.
- http://www.norwoodresources.com

Harvest Natural Resources
- Formerly Benton Oil and Gas. Operating mainly in Venezuela and Russia.
- http://www.harvestnr.com/

OPTI Canada Inc.
- Proposing to build a heavy oil (bitumen) recovery and upgrading project near Fort McMurray, Alberta. Comments, questions and opinions are invited.
- http://www.opticanada.com/

Result Energy Inc.
- Primary objective is exploring for, developing and producing hydrocarbons in western Canada. Based in Alberta.
- http://www.resultenergy.com/

Mountain V Oil and Gas, Inc.
- Operating in West Virginia and Pennsylvania.
- http://mountainvoilandgas.com/

Riata Energy, Inc.
- Oil and gas exploration and production operations. Based in Amarillo, Texas.
- http://www.riataenergy.net/

Hydro Oil and Energy
- Operating on the Norwegian continental shelf. Company also operates in Angola, Canada, Libya and Russia, with prospects in Iran and the Mexican Gulf.
- http://www.oilandenergy.hydro.com/

Darwin Oil Company
- Operates in West Texas and S.E. New Mexico, and internationally in Ecuador and Argentina.
- http://www.darwinoil.com/

FX Energy
- Utah company, with operations focused in Poland.
- http://www.fxenergy.com/

Lakes Oil
- Operating in Victoria, South Australia and Queensland.
- http://www.lakesoil.com.au/

McMoRan Exploration
- Operating offshore in the Gulf of Mexico and onshore in the Gulf Coast area.
- http://www.mcmoran.com/

Mount Dakota Energy Corporation
- Operating in Alberta and Kansas.
- http://www.mountdakota.com/

Primeline Energy Holdings Inc.
- Canadian company, operating in China.
- http://www.primelineenergy.com/

Ruwco Oil and Gas Corporation
- Operates in the Permian basin.
- http://www.ruwco.com/

The Meridian Resource Corporation
- Operates in south Louisiana, southeast Texas, and the Gulf of Mexico.
- http://www.tmrc.com/

Tullow Oil Plc.
- UK registered, operating in India, Africa, and in Europe.
- http://www.tullowoil.ie/

American Shoreline, Inc. (AMSHORE)
- Operations focus in Colorado, New Mexico and Texas.
- http://www.amshore.com/

Aspen Exploration Corporation
- Operating primarily in northern California.
- http://www.aspenexploration.com/

Clayton Williams Energy
- Operates primarily in Texas, Louisiana and New Mexico. The company has expertise with horizontal drilling and the use of 3-D seismic.
- http://www.claytonwilliams.com/

Cyrus Oil and Gas Company
- Operating in west and central Texas, Alabama, and in central California.
- http://www.cyrusoilandgas.com/

Diaz Resources Ltd.
- A Calgary-based company operating mostly in Alberta, Saskatchewan and Texas.
- http://www.diazresources.com/

Black River Royalties, Ltd.
- Acquiring leases in the southern tier of New York and the northern tier of Pennsylvania with emphasis on the Trenton-Black River natural gas play.
- http://www.blackriverroyalties.com/

Ameritex Minerals, Inc.
- Texas operator using 3D seismic to generate prospects.
- http://www.amrtx.com/

Newfield Exploration Company
- Large operations in the Gulf of Mexico, also operating onshore in Gulf Coast region, the Anadarko basin, and off-shore Australia and China.
- http://www.newfld.com

Harken Energy Corporation
- Operates mostly in southeast Texas and Gulf Coast region.
- http://www.harkenenergy.com/

Callon Petroleum Company
- Operations in Louisiana, Alabama and offshore Gulf of Mexico.
- http://www.callon.com/

Cabot Oil & Gas Corporation
- Operating in the onshore Texas and Louisiana Gulf Coast, Rocky Mountains, Appalachia and Mid-Continent.
- http://www.cabotog.com/

Apache Corporation
- Operations in the United States, Canada, Egypt, Western Australia, Argentina, Poland and China.  
- http://www.apachecorp.com

Anadarko Petroleum Corporation
- Operations in Alaska, western Canada, Rocky Mountains, mid- continent, Permian, Texas, Louisiana and Gulf of Mexico; and internationally in Algeria, Tunisia, West Africa and Australia (NYSE: APC).
- http://www.anadarko.com/

Zavanna, LLC
- Operating in the Alberta, Williston, Permian, Anadarko, East Texas and south Florida basins.
- http://www.zavanna.com/

WhitMar Exploration Company
- Focusing on the Mid-Continent and Gulf Coast regions. Houston, Texas company.
- http://www.whitmar.com/

Essential Petroleum Resources Ltd.
- Exploring in Australia's Otway Basin.
- http://www.essentialpetroleum.com.au/

Houston Energy, Inc.
- Exploring offshore Gulf of Mexico, Louisiana and Texas Gulf Coast. Also West Texas/southeast New Mexico.
- http://www.houstonenergyinc.com

Sibir Energy PLC
- Production and reserves primarily in Russia. UK production also.
- http://www.sibirenergy.com/

Credo Petroleum Corporation
- Operates in Midcontinent and Rockies. Shelf of Anadarko basin is core area.
- http://www.credopetroleum.com/

Infinity, Inc.
- Focusing on coalbed methane. Properties in Green River Basin of Wyoming and elsewhere. Also provide oilfield services in Kansas, Oklahoma, Missouri, and Wyoming.
- http://www.infinity-res.com/

Curlew Lake Resources Inc.
- Operations in western Canada and the United States.
- http://www.curlew-lake.com

US Oil & Gas Corp.
- Operating in Illinois, Kentucky and Indiana.
- http://www.usoilandgas.net/

Black Diamond Energy, Inc.
- Driller and developer of Coal Bed Methane in the Powder River Basin in Northeastern Wyoming.
- http://blackdiamondenergy.com/

Minard Run Oil Company
- Family-run company with 22 employees producing oil in Pennsylvania.
- http://www.mrocblackgold.com/

Outlook Resources
- Exploring and producing in western Canada. Also involved with ethanol production.
- http://www.outlookresources.com/

Gastar Exploration Ltd.
- Operates coal bed methane properties in Wyoming and Australia. Exploring for deep gas in California.
- http://www.gastar.com

Premier Oil plc.
- Exploration and production operations in UKCS, Albania, Indonesia, Myanmar and Pakistan.
- http://www.premier-oil.com

Century Exploration Company
- Exploration and production in Gulf of Mexico, South Louisiana, Mississippi and Texas. Company has a concession in the Dutch North Sea.
- http://www.centuryx.com

Tundra Oil and Gas, Ltd.
- Focus in Manitoba, Saskatchewan, and Alberta, Canada. Operates approximately 300 wells.
- http://tundraoilandgas.com/

Lundin Petroleum
- Swedish company operating in Sudan and Iran.
- http://www.lundin-petroleum.com/

Pancontinental Oil and Gas NL
- Operating in Australia, New Zealand and Africa.
- http://www.pancon.com.au/

Ranken Energy Corporation
- Operating in Arkansas, Kansas, Oklahoma, Texas, and Utah.
- http://www.ranken-energy.com/

Bocor Producing
- Ohio oil and gas operator.
- http://www.bocorproducing.com/

MC3 Resources
- Operating primarily in Saskatchewan, Canada. Also provides third party management of hydrocarbons operations.
- http://www.mc3resources.com

Norwest Energy NL
- Operating in the north and west of Australia.
- http://www.norwestenergy.com.au/

Emerald Energy Plc.
- Operates in Columbia, Argentina, Denmark and the Appalachian basin of USA. Based in United Kingdom.
- http://www.emeraldenergy.com/

Farmer Energy Services
- Illinois Basin company involved in exploration and development of coal methane from abandoned mines, virgin coal and New Albany Shale.
- http://www.coalmethane.com

Ridgeway Petroleum, Inc.
- Ridgeway Petroleum is currently developing a significant CO2 and helium discovery in Arizona. This accumulation may make Ridgeway one of the North America's largest producers of those gases.
- http://www.ridgewaypetroleum.com/

Aera Energy LLC
- California oil and gas producer with operating properties extending from the LA Basin in the south to the Sacramento Delta in the north.
- http://www.aeraenergy.com/

D and L Energy, Inc.
- Oil and gas exploration, development and marketing in Ohio and Pennsylvania.
- http://www.dandlenergy.com

Aruba Petroleum Inc.
- Operations focused on Barnett Shale plays in north Texas, and on the Anakarko Basin in Oklahoma.
- http://www.arubapetroleum.com

Pinnacle Energy Ltd.
- UK based exploration and production, asset management and consulting company.
- http://www.pinnacle-energy.com

Dave Easom Production Company, Inc.
- Exploration and Production operations and consulting in SW Mississippi and N. Central Louisiana.
- http://www.easomoil.com

Vista Resources Inc.
- Gas production, pipelining, reserve acquisitions and marketing in the Appalachian Basin.
- http://www.vistaresources.com/

US Capital Energy, Inc.
- Exploration in Rockies, Gulf Coast, Guatemala, and Belize.
- http://www.uscapitalenergy.com/

Tusk Energy Inc.
- Operates in western Canada.
- http://www.tusk-energy.com

St. Mary Land & Exploration Company
- Exploration and enhanced recovery in Anadarko, Williston, and Permian basins. Also Arklatex area, West Texas and coastal Louisiana.
- http://www.stmaryland.com

Rising Star Energy
- Emphasizes horizontal drilling and 3D seismic in stratigraphically trapped accumulations. Has interests in 6 trends in West Texas, Oklahoma, West Virginia and New York. Requires Java 2 plug-in.
- http://www.risingstarenergy.com/

Compton Petroleum Ltd.
- Calgary-based independent operating in Western Canada.
- http://www.comptonpetroleum.com/

Penneco Oil Company, Inc.
- Operates in western Pennsylvania and West Virginia. Investors can participate in drilling partnerships.
- http://www.penneco.com/

Sovereign Oil & Gas Company
- Generate, market and manage international upstream oil and gas projects and property acquisitions, including both industry and government oil companies.
- http://www.sovereignoil.com/

Habinero Resources Inc.
- Gas exploration in California.
- http://www.habaneroresources.com

Oracle Energy Inc.
- Energy company actively engaged in the exploration and development of a suite of oil prospects situated on Yemen's Red Sea coast proximate to the Saudi Arabian border.
- http://www.oracleenergy.com/

True companies
- Family owned businesses dealing with oil and gas exploration, drilling, brokerage, trucking and ranching.
- http://www.truecos.com/

Edge Petroleum Corporation
- Operates onshore on US Gulf Coast.
- http://www.edgepet.com/

Pioneer Natural Resources Company
- Large independent with operations in the United States, Canada, Argentina, South Africa, Gabon and Tunisia.
- http://www.pioneernrc.com/

Continental Energy Corporation
- A small independent operator concentrating on Indonesian concessions which total 3.7 million acres.
- http://www.continentalenergy.com

Cairn Energy PLC
- International operator. Current operations are primarily in the North Sea and the Indian Subcontinent. Based in Scotland.
- http://www.cairn-energy.plc.uk

Brigham Exploration Company
- Operates in Oklahoma, West Texas and onshore Gulf Coast. Emphasizes use of seismic imaging techniques.
- http://www.bexp3d.com

Soco International Plc
- Production in Yemen, Mongolia, Russia and Tunisia. Exploration in SE Asia. Headquarters in United Kingdom.
- http://www.socointernational.co.uk

BreitBurn Energy
- Operates primarily in California. Also pursuing exploration in Wyoming, Texas, Louisiana and shallow Gulf of Mexico.
- http://www.breitburn.com/

Comstock Resources, Inc.
- Operating in Texas, Louisiana, and the Gulf of Mexico.
- http://www.comstockresources.com/