N

Nabors Drilling USA Inc.
Naftex Holdings Ltd.
Nal Resources
Nation Petroleum
National Fuel Exploration Corp.
Nations Energy Co. Ltd.
Natural Gas Pipeline Co.
Navajo Petroleum
Navigator Resource Management Inc.
NCL Natural Resources LLC.
Nelson Resources Ltd.
Nescor Energy Ltd.
Neumin Production Co.
New England Energy Inc.
New Horizon Exploration
New West Fuels LC.
Newfield Exploration Co.
Newport Petroleum Corp.
Newstar Energy Inc.
Nexgen Energy LLC.
NGC Energy Resources LP.
Niko Resources Ltd.
Nippon Oil Exploration U.S.A. Ltd.
Nisource Inc.
Nobel Oil
Noble Royalties Inc.
Norcen Explorer Inc.
Norfolk Energy Inc.
North Aegean Petroleum Co.
North American Methane LLC.
North Caspian Petroleum Ltd.
North Sea Oil Company Ltd.
Northeastern Energy Corp.
Northrock Resources
Northwest Parkway Public Highway
Nosley Properties Ltd.
Novus Petroleum Ltd.
Nuevo Energy Co.
Numac Energy Inc.
NAEDC
Nagit (USA) Inc.
Nance Petroleum
National Cooperative Refinery Association
National Park Service
NationsBank Trust Oil & Gas
Natural Gas processing Co.
Navidec Financial Services Inc.
NCE Resources
NCX Co. Inc.
Nemours Energy
Neste Oil OYJ.
New Century Exploration Inc.
New Frontier Energy Inc.
New Mexico and Arizona Land Co.
New York Gas & Oil Co.
Newmex Minerals Ltd.
Newquest Energy Inc.
Nexen Inc.
NFR Energy
NI Fuel Co.
Nimir Petroleum Holding Ltd.
NISKA Gas Storage Inc.
Nitrotec Energy Corp.
Noble Energy
Noram (USA) Inc.
Nordron Enterprises
Norse Petroleum (U.S.) Inc.
North American Energy Inc.
North American Power Group Ltd.
North Central Oil Corp.
North Star Oil and Gas
Northern Oil & Gas Inc.
Northwest Bank Casper Wyoming
Northwestern Mutual Life Insurance Co.
Novus
NPC Energy Corp.
Nugas Ltd.