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                | 3. | Netherland, Sewell and Associates, Inc. |  
                |  | Field studies, oil and gas reserve certifications, economic evaluations, and operations management. Integrated geology, geophysics, petrophysics and engineering. 
 
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                | 4. | DeGolyer and MacNaughton |  
                |  | Offers international reservoir appraisal, field development planning services. Based in Dallas, Texas. 
 
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                | 5. | ResTech Inc. |  
                |  | Reservoir appraisal, field development planning and exploration projects. Located in Houston, Texas. 
 
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