L B Industries Inc. Lake Fork Resources LLC. Lake Ronel Oil Co. Landmark Resources Inc. Laredo Petroleum Inc. Larmag Energy NV. Laser Midstream LLC. Lazard & Co. Ltd. Legacy Exploration Inc. Leviathan Gas Pipeline Co. Liberty Energy Corp. Lightening Energy Ltd. Limestone Energy Managers LLC. Live Oak Reserves LMA Hughes LLP. Lobo Production Inc. Lomax Oil & Gas Co. Louis Dreyfus Natural Gas Corp. Lubar Oil Co. Lynx Exploration and Production |
L G & E Energy Corp. Lake Horicon Corp. Landmark Energy Exploration Inc. Lanex Resources Inc. Lariat Petroleum Inc. Laroche Petroleum Consultants Latigo Petroleum Inc. LCRW Power Co. Leland Energy Lexoil Inc. Liberty Power Ltd. Lime Rock Resources Lincoln Petroleum Ltd. LLOG Exploration Co. LLC. LNG Partners LLC. Lomax Exploration Los Altares Resources Louisiana Intrastate Gas Co. Lumbaqui Oil |