Southwestern Energy Company was founded in 1929 and is based in Houston, Texas. Southwestern Energy Company engages in the exploration, development, and production of natural gas and crude oil in the United States. Southwestern Energy 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,Southwestern Energy Company estimated proved natural gas and oil reserves were approximately 2,185 billion cubic feet of gas equivalent.

Empire Energy Corporation International has put a lot of energy into the search for oil and gas in a once far-flung region of Her Majesty's former empire -- Australia. Oil and gas independent Empire Energy previously owned oil and gas interests in Texas, Wyoming, and Nicaragua. However, in 2005 Empire Energy Corporation International acquired Australian oil and gas explorer Great South Land Minerals and began to focus on developing oil and gas assets in Tasmania. Empire Energy is investing in developing a potential 3-million-barrel oil deposit on 15,000 sq. km. of leasehold property. Empire Energy Corporation International also controls 47% of Chinese food canner Pacific Rim Foods.

Stallion Oilfield Services Ltd. provides wellsite support services and production & logistics services to the oilfield with over 1,700 employees in 65 locations. As the largest provider of quality auxiliary rentals and services for oil and gas operations in the domestic United States, we have been providing reliable housing, water and sewer systems, waste management, satellite systems, solids control, wellsite construction and oilfield heavy hauling to the oil patch for many years. The wellsite support segment (its main revenue generator) provides living quarters for the workforce, equipment rental, satellite communications services, and solids control and waste handling coordination services. Overextended following a round of acquisitions, in late 2009, facing heavy debts, the company sought Chapter 11 bankruptcy protection, from which it emerged in early 2010.

Newfield Exploration Company was founded in 1988 and is based in Houston, Texas. 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. Newfield Exploration Company also had proved reserves of approximately 2.95 trillion cubic feet equivalent. In addition, Newfield Exploration Company has operations in Malaysia and the People's Republic of China.

Vanguard Natural Resources, LLC, through its subsidiaries, engages in the acquisition, development, and exploitation of natural gas and oil properties. Vanguard Natural Resources properties are located in the southern portion of the Appalachian Basin, primarily in southeast Kentucky and northeast Tennessee; and the Permian Basin, primarily in west Texas and southeastern New Mexico, and in south Texas. As of December 31, 2008, Vanguard Natural Resources owned working interests in 958 net productive wells, and had estimated proved reserves of 108.5 billion cubic feet equivalents of natural gas and crude oil. Vanguard Natural Resources also has a 40% working interest in approximately 109,500 gross undeveloped acres surrounding or adjacent to its wells located in southeast Kentucky and northeast Tennessee. Vanguard Natural Resources was founded in 2006 and is based in Houston, Texas.

Iroquois was created in response to dramatic increases in natural gas demand and anticipated future needs. Fresh from the energy crisis of the 1970s, the Northeast Region found itself increasingly dependent on petroleum products. The discovery of vast reserves of natural gas in Western Canada during the 80’s opened up new possibilities allowing for the creation of a new partnership, designed to link the Canadian supplies with the Northeast markets. Since beginning full operations in 1992, we have expanded our system to meet the needs of our customers while minimizing the impact on local communities. Through the addition of seven compressor stations, a 36-mile marine pipeline extension and 1.6-miles of pipeline loop, Iroquois has operationally doubled the amount of natural gas transported on its system.

Pyramid Oil has been in business for more than a century, focusing on the exploration, development, and production of crude oil and natural gas. Pyramid Oil Company major operations and all of its income-producing assets are located in Kern and Santa Barbara counties in Southern California, where Pyramid Oil Company owns and operates about 30 oil and gas leases. Pyramid Oil also holds minority stakes in some oil and gas leases in New York, Texas, and Wyoming. In 2008 Pyramid Oil reported proved reserves of more than 470,000 barrels of oil and 330 million cu. ft. of natural gas. Company chairman Michael Herman owns about 36% of Pyramid Oil. Crude oil and natural gas produced from Pyramid’s properties are sold to various refineries and pipeline companies. The majority of all oil and gas properties that Pyramid owns and operates is for its own account. Pyramid also participates in joint ventures with other companies in the development of oil and gas properties.

Seahawk Drilling, Inc. was incorporated in 2008 and is based in Houston, Texas. Pride SpinCo, Inc. operates as a subsidiary of Pride International Inc. Seahawk Drilling, Inc. (NasdaqGS:HAWK.V) operates independently of Pride International Inc. as of August 24, 2009. Seahawk Drilling, Inc. provides contract drilling services to the oil and gas industry in that region of the US. Seahawk Drilling, Inc. has a fleet of about 20 jackup rigs (mobile elevating platforms) that operate in water and drill to depths of up to 25,000 ft. Seahawk Drilling provides both rigs and crews on a day-rate basis to customers that include both large and small independent oil and natural gas producers, drilling service providers, and Mexico's state-owned petroleum company PEMEX. In 2009 Seahawk Drilling was spun off from Pride International.

GeoResources, Inc. was founded in 2004 and is headquartered in Houston, Texas.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 reserves of approximately 8,793 thousand barrels of oil; and 34,796 million cubic feet of gas. GeoResources, Inc. also had a net acreage of approximately 112,289 developed acres; and 84,162 undeveloped acres, as well as operated 259.2 net productive oil wells; and 130.8 net productive gas wells.

PDTI Holdings (dba Particle Drilling Technologies) is developing an advanced drilling technology it hopes will provide a dramatic increase in penetration rates for drilling oil and gas wells. PDT's role in the energy industry is to dramatically improve drilling efficiency; thereby making new energy reserves economically available through a significant reduction in finding and development costs. PDTI Holdings LLC Particle Impact Drilling System advanced drilling technology is designed to drill through deep, hard, and abrasive zones or other difficult-to-drill geologic formations. The Particle Impact Drilling System uses a custom-built drill bit fitted with jetting nozzles and polycrystalline diamond compact cutting structures. Never able to make the technology profitable, PDTI Holdings LLC filed for and emerged from Chapter 11 bankruptcy protection in 2009.

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