Mariner Energy, Inc. was incorporated in 1983 and is headquartered in Houston, Texas with additional offices in Midland, Texas; and Lafayette, Louisiana. the independent explores in both the deep and shallow waters of the Gulf of Mexico, where Mariner Energy, Inc. has the bulk of its proved reserves. But the landlocked Permian Basin of West Texas is also an area of focus. Mariner Energy sees this diversified portfolio as a key strategic asset, allowing the company to work in two distinct exploration environments. In 2008 Mariner Energy, Inc. reported estimated proved reserves of 974 billion cu. ft. of natural gas equivalent. In late 2009 Mariner Energy acquired bankrupt Edge Petroleum for about $260 million.

Energas Resources, Inc., Oklahoma oil and natural gas company is dedicated to developing energy projects for everyone's future. Energas is currently working on properties in Kentucky, Oklahoma and Wyoming. Operating through Energas Resources, Inc. A.T. Gas Gathering Systems and TGC subsidiaries, Energas Resources, Inc. is primarily focused on exploring and producing in the Arkoma Basin in Oklahoma, and the Powder River Basin in Wyoming. Energas Resources has proved reserves of 22,143 barrels of oil and 1.9 billion cu. ft. of natural gas. In 2007 Energas Resources, Inc. sold most of its assets in the shallow Devonian Shale natural gas strata in the Appalachian Basin of Kentucky. President George Shaw owns about 24% of the company. Energas Resources, Inc. was incorporated in 1989 and is based in Oklahoma City, Oklahoma.

Unit Corporation operates as a contract drilling company. The company operates in three segments: Contract Drilling, Oil and Natural Gas, and Mid-Stream. The Contract Drilling segment engages in the land contract drilling of natural gas and oil wells. Unit Corporation has operations in the provinces of Oklahoma, Texas, Louisiana, Wyoming, Colorado, Utah, and North Dakota. The Oil and Natural Gas segment involves in the exploration, development, acquisition, and production of oil and natural gas properties. Unit Corporation producing oil and natural gas properties, undeveloped leaseholds, and related assets are located primarily in Oklahoma, Texas, Louisiana, and New Mexico, as well as in Arkansas, North Dakota, Colorado, Wyoming, Montana, Alabama, Kansas, Mississippi, Michigan, Pennsylvania, Maryland, and a small portion in Canada. The Mid-Stream segment engages in buying, selling, gathering, processing, and treating natural gas. Unit Corporation operates 3 natural gas treatment plants, 8 operating processing plants, 33 active gathering systems, and 839 miles of pipeline in Oklahoma, Texas, Kansas, and Pennsylvania. Unit Corporation also operates a total fleet of 130 drilling rigs. The company was founded in 1963 and is based in Tulsa, Oklahoma.

The Nabors companies own and operate approximately 528 land drilling and approximately 763 land workover and well-servicing rigs in North America. Nabors' actively marketed offshore fleet consists of 37 platform rigs, 13 jack-up units and 3 barge rigs in the United States and multiple international markets. In addition, Nabors manufactures top drives and drilling instrumentation systems and provides comprehensive oilfield hauling, engineering, civil construction, logistics and facilities maintenance, and project management services. Nabors participates in most of the significant oil, gas and geothermal markets in the world. Nabors Drilling USA also provides well control equipment rental, equipment engineering, technical support and other rig-related services.

Toreador Resources was founded in 1951 and is headquartered in Paris, France. Toreador Resources Corporation operates as an independent international energy company. Toreador Resources Corporation engages in the acquisition, development, exploration, and production of crude oil. Toreador Resources Corporation holds interests in developed and undeveloped oil properties in France. Toreador Resources primarily focuses on the Paris Basin Oil Shale. Toreador Resources Corporation was formerly known as Toreador Royalty Corporation and changed its name to Toreador Resources Corporation.

Sippin Energy Products distributes heating fuel to customers in southwestern Connecticut. Sippin Energy Products heating oil services for customers include the removal of old oil tanks, and their replacement with new ones. Sippin Energy Products also sells and installs air conditioning systems and hot water heaters. In addition to its fleet of oil delivery trucks, Sippin Energy Products operates a 800,000 gallon storage tank. Sippin Energy Products is owned by the Sippin family which founded their fuel business in 1919.

Navigating the midstream energy markets, Magellan Midstream Holdings owns and controls Magellan GP, LLC, the general partner of Magellan Midstream Partners, L.P., which is engaged in the transportation, storage, and distribution of refined petroleum products. Magellan Midstream Partners' portfolio includes 29 inland terminals, and 1,100 miles of ammonia pipeline, 9,400 miles of refined petroleum pipeline, and 50 distribution terminals in the US Midwest. The partnership also owns seven marine terminal facilities with a combined usable storage capacity of 22 million barrels.

Thomas Petroleum is owned and managed by president L. Ray Thomas.Petroleum and heating oil wholesaler and retailer Thomas Petroleum operates in North Carolina, South Carolina, and Tennessee. Thomas Petroleum serves more than 145 wholesale customers, nearly 50 convenience store clients, and owns of nine convenience stores. Thomas Petroleum sells major petroleum brands, including BP, Chevron, ConocoPhillips, Marathon, and Sunoco. Thomas Petroleum is the only supplier of ethanol 85 to public fueling centers in North Carolina.

Shell Trading supports the Shell businesses, in particular Oil Products, Gas & Power and Chemicals, by trading natural gas, electrical power, crude oil, refined products, chemical feedstocks and environmental products. We also manage one of the world's largest fleets of Liquified Natural Gas (LNG) carriers and oil tankers. Shell International Trading and Shipping Company Limited (STASCO) has two jobs to perform for its parent company Royal Dutch Shell. STASCO trades and manages the commodity portfolios across the Royal Dutch Shell Group, and it also manages the shipments of the company's crude oil, gas, and other cargoes across the globe. These twin functions create a network that is responsible for trading about 5 million barrels of crude and shipping cargoes on some 140 deep-sea tankers and gas carriers around the world every day. STASCO was founded in 1995, when Royal Dutch Shell merged its Shell International Trading Company and Shell International Shipping Limited divisions.

Shipping energy to individual home owners is a family tradition for Shipley Energy, which provides 45,000 customers in 15 counties in central Pennsylvania with heating oil, propane, and natural gas. Shipley Energy Company also provides air conditioning, air duct cleaning, and heating system repair services, and wholesales petroleum products and natural gas to commercial and industrial clients. Shipley Energy distributes 125 million gallons of petroleum products a year, offering unbranded and branded gasolines to gas stations in its service region. Shipley Energy Company, which was founded in 1929 by Thomas Shipley, is controlled by the Shipley family.

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