Rock Energy Resources, Inc. was founded in 2004 and is headquartered in Houston, Texas. Rock Energy Resources, Inc., an independent oil and natural gas company, engages in the exploration, development, and production of natural gas and crude oil properties in the United States. Rock Energy Resources, Inc. natural gas projects include the company's 100% operated working interest in the Wilcox trend in the Garwood field, a leasehold of 1,650 acres in Colorado County, Texas with 3P reserves estimated to be approximately 37.5 billion cubic feet; and a 100% working interest in the Bob West Prospect, a 1,110 acre leasehold in Starr County, Texas with Wilcox discovery potential equal to 250 billion cubic feet. Rock Energy is also producing oil from the Diatomite and Monterey formations in the Orcutt field and from the Northwest Casmalia Diatomite field, both located in Santa Barbara County, California, where there is a known resource base of approximately 2.5 billion barrels of oil in place. As of December 31, 2008, Rock Energy Resources, Inc. had total proved net oil reserves of 9,000 barrels and total proved net natural gas reserves of 555,420 thousands of cubic feet.

Rowan Companies, Inc. was founded in 1923 and is headquartered in Houston, Texas. Rowan Companies, Inc. provides a range of onshore and offshore contract drilling services in the United States and internationally. As of December 31, 2009, Rowan Companies, Inc. provided contract drilling services through a fleet of 23 self-elevating mobile offshore drilling platforms and 29 deep-well land drilling rigs. Rowan Companies, Inc. performs contract drilling primarily in the Middle East, Texas, the Gulf of Mexico, and in the North Sea. Rowan Companies, Inc. also designs and manufactures drilling equipment in a range of sizes, including mud pumps, top drives, draw-works, rotary tables, and electrical components, such as variable-speed motors and drives for the offshore and onshore oil and gas drilling industry. In addition, Rowan Companies, Inc. manufactures heavy equipment, including large-wheeled front-end loaders, diesel-electric powered log stackers, and steel plate products.

Saipem S.p.A. provides drilling and construction services to oil and gas companies worldwide. Saipem S.p.A. is organized into three business units: Offshore, Onshore, and Drilling. Saipem has thee major drilling vessels, 10 offshore rigs, and a construction fleet of about 40 units. To help oil and gas companies with field development, Saipem S.p.A. installs fixed platforms and floating production systems. In addition to oil and gas drilling, Saipem is a leader in providing engineering, procurement, project management and construction services with a bias toward large scale offshore and onshore projects. Saipem is 43%-owned by Italian energy giant Eni.

Russia's Sakhalin Island is Big Oil nirvana. The area's estimated reserves top 500 billion cubic meters of natural gas and 150 million tons of oil. Sakhalin Energy is a consortium of Royal Dutch Shell, Russia's Gazprom, and Japan's Mitsui and Mitsubishi formed to exploit those resources. Its facilities include offshore platforms, an oil pipeline terminal and a natural gas liquefaction plant, which the company hopes will give it an edge in serving the growing demand in Asia. Sakhalin Energy Investment Company Ltd. was formed in 1994 to develop the Piltun-Astokhskoye oil field and the Lunskoye gas field in the Sea of Okhotsk offshore Sakhalin Island in the Russian Far East. Sakhalin Energy Investment Company Ltd. began producing and exporting liquefied natural gas (LNG) in 2009. The first delivery was to Japan in March of that year.

Samson is headquartered in Tulsa, Oklahoma and maintains division offices in Houston, Denver, and Midland. Samson Investment is an independent oil and gas entity with exploration, development, and production activities in Canada and the US (19 states), as well as in Australia. Key producing regions include East Texas, Texas Gulf Coast, Anadarko, Permian, San Juan, Green River, and the Williston Basin. Samson Investment operates more than 4,000 wells and has stakes in more than 11,000 wells. Samson Investment Company strategy is to make acquisitions that complement its existing areas of operations and establish its presence in new core regions. In 2007 Samson Investment Company acquired PYR Energy, which has assets in the Gulf Coast, Texas, and Rocky Mountain regions.

Samson Oil & Gas Limited was founded in 1980 and is headquartered in Perth, Australia. Samson Oil & Gas Limited is an Australian based oil & gas company holding extensive development and exploration acreage in the USA. The Australia-based company acquires proved developed oil and gas leases, mainly in Wyoming but also in New Mexico, and Texas. Samson Oil and Gas Limited has four oil and gas properties, three of which are producing, and in 2008 reported proved reserves of 16.1 billion cu. ft. of natural gas equivalent. Samson Oil and Gas Limited holds a working interest in its properties which are exploited by third parties. Samson Oil and Gas also does exploratory and developmental drilling, primarily in Wyoming's Green River Basin. Samson Oil and Gas Limited owns interests in various projects located in Wyoming, North Dakota, New Mexico, and Texas.

Santos is an Australian oil and gas exploration and production company with high quality assets and projects throughout Australia and the Asia-Pacific region. Santos Ltd supplies over 20% of eastern Australia’s domestic gas and produced 54.4 million barrels of oil equivalent in 2008. Santos has the largest Australian exploration portfolio by area of any company – 192,000 square kilometres. Santos is developing a multibillion-dollar project to build an LNG facility at Gladstone, Queensland – the world’s first project to convert coal seam gas to LNG on a large scale. Santos Ltd is already a producer of LNG through the Darwin LNG project, which has been exporting to Japan since 2006. Santos has interests in all major oil basins in Australia, including those offshore. Santos Ltd also operates in other countries, including Bangladesh, Egypt, India, Indonesia, Kyrgyzstan, Papua New Guinea, and Vietnam. At 31 December 2009, Santos had a total market capitalisation of approximately $12 billion, making it one of Australia’s Top 30 companies.

Saxon Energy Services is a land-based drilling and well-servicing contractor focusing on markets outside Canada and the US. Saxon Energy Services Inc. provides technology, equipment, and trained crews to oil and gas producers. Since Saxon Energy Services Inc. founding in 1995 it has pursued a strategy of acquisition to double its assets in South America. Saxon Energy Services Inc. acquired Ecuador-based subsidiary Perforec in 2001, and Saxon Energy Services Inc. entered Venezuela in 2005 with the acquisition of Justiss Drilling. In 2008 Saxon Energy Services was operating 58 drilling rigs in Canada, Colombia, Ecuador, Mexico, Peru, the US, and Venezuela.

SeaEnergy PLC (formerly Ramco Energy plc), a Scottish public limited company, and its subsidiaries and associates form an energy group, headquartered in Aberdeen, Scotland. Through subsidiaries and affiliates, the holding company explores for oil and gas in the UK North Sea, the Irish Sea, Central Europe (Bulgaria), and Iraq. SeaEnergy PLC has also entered the renewable energy field and is looking for global opportunities for large-scale offshore wind farm development through its 88%-owned SeaEnergy Renewables. Because of SeaEnergy PLC new focus on offshore wind power, SeaEnergy PLC changed its name from Ramco Energy in 2009.

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.

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