- Petrochem Operating Co
- Petroci USA Inc
- Petrogulf Corp
- Petrol Industries Inc
- Petrol Industries Inc
- Petrol Oil & Gas Inc
- Petrol Oil & Gas Inc
- Petrol Oil & Gas Inc
- Petrolea Oil
- Petroleum Asset Management Co
- Petroleum Fuel & Terminal
- Petroleum Fuel & Terminal Co
- Petroleum Fuel & Terminal Co
- Petroleum Inc
- Petroleum Inc
- Petroleum Inc
- Petroleum International Inc
- Petroleum Management Inc
- Petroleum Property Svc
- Petroleum Property Svc Inc
- Petroleum Resources Inc
- Petroleum Synergy Group Inc
- Petroleum Synergy Group Inc
- Petrolglyph Operating Co
- Petron Development Co
- Petroquest
- Petroquest Oil & Gas
- Petroreal Inc
- Petroreal Inc
- Petroterra Resources LLC
- Petrox Inc
- Pharaoh Oil & Gas Inc
- Phil's Oil Clinic
- Philadelphia Oil Co
- Phillip T Sharples Trust
- Phillips Oil Co
- Phillips Oil Inc
- Phillips Petroleum
- Phillips Petroleum
- Phillips Petroleum
- Phillips Pipe Line Co
- Phoenix Energy Co Inc
- Phoenix Energy Inc
- Phoenix Hydrocarbons Operating
- Phoenix Hydrocarbons Operating
- Phoenix Petro Corp
- Phoenix Petro Corp
- Phoenix Petro Corp
- Phoenix Petro Corp
- Phoenix Production Co
- Phoenix Production Co
- Phoenix Production Co
- Phoenix Production Co
- Pickrell Drilling Co
- Piedmont Natural Gas Co Inc
- Pigott Oil Co Bulk Plant
- Pilot Oil 346
- Pilot Oil Corp
- Pilot Oil Corp Main Office
- Pilot Resources Inc
- Pine Island Oil Corp
- Pine Mountain Oil & Gas Inc
- Pinedale Natural Gas
- Pinkston Energy Corp
- Pioneer Exploration LTD
- Pioneer Exploration LTD
- Pioneer Exploration LTD
- Pioneer Natural Resources USA
- Pioneer Natural Resources USA
- Pioneer Natural Resources USA
- Pioneer Natural Resources USA
- Pioneer Natural Resources USA
- Pioneer Natural Resources USA
- Pioneer Natural Resources USA
- Pioneer Natural Resources USA
- Pioneer Natural Resources USA
- Pioneer Natural Resources USA
- Pioneer Natural Resources USA
- PITCO
- Pitts Energy
- Plains Exploration & Prdctn Co
- Plains Exploration & Prdctn Co
- Plains Exploration & Prod Corp
- Plains Exploration/Production
- Plains Petroleum Marketing Inc
- Plains Petroleum Operating Co
- Plainview Oil & Gas Inc
- Pledger Partners LTD
- Plymouth Management Info
- Plymouth Oil Co
- Poad Oil
- Pobres Inc
- Pobres Inc
- POG Inc
- Pogo Producing Co
- Pogo Producing Co
- Pogo Producing Co
- Pohl Oil Co
- Point Oil Inc
- Polaris Production Corp
- Polk Oil
- Polk Oil Co Inc
- Polk Oil Co Inc
- Polk Petroleum
- Polk Petroleum
- Poma Automated Fueling Inc
- Pontotoc Natural Gas
- Pontotoc Operations Inc
- Port Oil
- Port Oil
- Portland Natural Gas
- Poso Creek Resources Corp
- Potts Exploration LLC
- Pour Boy Oil
- Pour Boy Oil
- Powell & Brown Oil Co
- Power Green Fuels
- Power Resources Operating Co
- Powerine Oil Co
- Powers Oil
- Prairie Well Svc
- Prater Oil & Gas
- Prather Oil Co
- Precision Oil Change
- Precision Oil Corp
- Preet Oil Corp
- Preet Oil Corp
- Preferred Well Svc
- Premier Energy Partners
- Prentice Oil & Gas Co
- Prentice Oil Co
- Pressly Oil Interest Inc
- Pressly Oil Interest Inc
- Presto Oil Inc
- Prg LC
- Priam Oil Co
- Pride Oil Co
- Pride Oil Well Svc
- Prideaux Station
- Prima Exploration Inc
- Prime Operating Co
- Prime Operating Co
- Primrose Operating
- Primrose Operating
- Primrose Operating Co
- Prince Geologic Consultants-Oh
- Prism Energy
- Prize Energy Corp
- PRL Oil Co
- Progressive Combustion Co Oil
- Progressive Oil Co Inc
- Pronto Oil Burner Svc
- Prospect Oil & Gas
- Prostar Energy LLC
- Proton Energy
- Providence Oil Co
- Provision Oil Inc
- Pruet & Hughes Co
- Pruet Production
- Pruet Production Co
- Pruet Production Gas Plant
- Pryor Oil Co
- Public Service Natural Gas Grp
- Pugh Oil Co
- Pugh Oil Co
- Puma Oil
- Pumpelly Oil Co
- Pumpelly Oil Inc
- Pure Oil Jobber
- Pure Resources
- Pure Resources Inc
- Pvr
- Pvr Midstream Natural Gas
- Pyramid Corp Inc
- Pyramid Oil Of America
- Q C Oil Svc Inc
- Quackenbush Oil Co
- Quad B Oil Co
- Quad B Oil Co
- Quail Creek Oil Corp
- Quail Creek Oil Corp
- Quail Energy Corp
- Quaker State Central Ohio
- Quaker State Oil Distrbtr
- Quality Oil Co
- Quality Oil Co
- Quality Oil Newton Gas House
- Quality Production Svc LLC
- Quality State Oil Garage
- Quanah Co
- Quanico Oil & Gas Co
- Quatro Oil & Gas Inc
- Quatro Oil & Gas Inc
- Quatro Oil & Gas Inc
- Quatro Petro Corp
- Quest Energy Svc Inc
- Quest Resource Corp
- Questar EXPLORATION
- Questar EXPLORATION
- Questar Exploration & Prdctn
- Quicksilver
- Quicksilver Resc Inc
- Quincy Inland Oil
- Quinque Oil & Gas Producing Co
- R & D Oil Producers
- R & D Oil Producers
- R & D Oil Producers
- R & J Drilling Co
- R & L Oil Co
- R & R Resources LLC
- R & S Oil & Gas Production Co
- R B Operating Co
- R B Wiesen & Co
- R B Wiesen & Co
- R Brannon Oil Leases
- R C Banks
- R C Banks
- R C Poling & Co
- R Capps Oil Corp
- R E Greene Office
- R G Berry Co
- R H Adkins Office
- R H Penick Oil Gas & Brine
- R H Venable Properties
- R J Graham Oil Co
- R K Allen Oil Co
- R K Allen Oil Co Inc
- R L Adkins Corp
- R L Bolin Properties LTD
- R L Bolin Properties LTD
- R L Jordan Oil Co
- R L Reed Oil Co
- R M Energy
- R M Hill Operating Inc
- R M Hill Operating Inc
- R Mc Neely Oil Co
- R P Nixon Operations Inc
- R R Oil
- R S Anderson
- R S Anderson
- R S Used Oil Svc Inc
- R T Rogers Oil Co
- R V Borchert Oil Producer
- R V Borchert Oil Producer
- R W Oil & Gas
- R W Tyson Producing Co
- Rabco Co
- Rabco Co
- Rabco Co
- Rachel Esther Monroe
- Rail Net
- Rainbo Oil
- Rainbo Oil
- Rainbow Oil Producing Co
- Rainbow Oil Producing Co
- Rainbow Seven Oil & Gas Co Inc
- Rainey Oil Co LLC
- Rains & Williamson Oil Co
- Rains National Resources
- Ralph Way Oil & Gas
- Ralph's Oil
- Ram Group LTD
- Ram Oil Co
- Ram Resources Inc
- RAMA Operating Co
- Ramah Oil Co LLC
- Ramey Oil Corp
- Ramian Oil Corp
- Ramos Oil Co Inc
- Rampage Energy Inc
- Rampant Oil Exploration & Drll
- Ramsey Oil Hutchison Inc
- Ran Oil Co
- Ranch Oil
- Ranck Oil Co
- Ranck Oil Co
- Ranck Oil Co
- Ranck Oil Co Inc
- Range Oil & Drilling Co
- Range Production
- Range Production Co
- Range Resources
- Range Resources Corp
- Ranshaw Oil
- Raptor Resources Inc
- RAS Oil Co
- Rasmussen Oil & Equipment
- Rault Resources Inc
- Raw Oil & Gas Inc
- Raw Oil & Gas Inc
- Ray Groth Oil Co
- Ray Richey Co
- Ray Westfall Operations Inc
- Raybourn Interests Inc
- Rayburn Oil Co
- Raymer Oil Co
- Raymond Oil Co
- Raymond R Dombaugh
- Raymond Supply Co
- RDM Oil
