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Patterson-UTI Energy, Inc. is a provider of contract drilling business. It operates primarily in Texas, New Mexico, Oklahoma, Arkansas, Louisiana, Mississippi, Alabama, Colorado, Arizona, Utah, Wyoming, Montana, North Dakota, South Dakota, Pennsylvania,
National Fuel Resources is a Erie, PA-based company in the Energy and Utilities sector.
Petron Energy II, Inc. continues a tradition of developing oil and gas properties in low risk areas with years of proven production history.
A division of U.S. Venture, Inc., U.S. Oil is a value-adding distributor, marketer, trading and terminal operator of fuel and renewable energy products in North America.
Energen Corporation is a diversified energy company with a growing oil and gas acquisition and development company and a strong and stable natural gas utility.