- Satuit Oil Co
- Saturn Oil Distribution Corp
- Saturn Oil Distribution Corp
- Saturn Oil Of Ellicott City
- Savage Oil Co
- Say Oil Co Inc
- Sayerville Oil Inc
- Schaeffer Manufacturing Co
- Schaeffer Oil
- Schafer Oil Co Inc
- Schalk & Schalk
- Schalk & Schalk
- Scheck Oil
- Schmid Properties Inc
- Schulein Co
- Schultz-Doyle-Stoddard Oil Co
- Schultz-Doyle-Stoddard Oil Co
- Scissor Tail Energy
- Scott's Services
- Scottie's Oil Co
- Scotty's Oil Co
- Scribi Oil
- Scrivener Oil
- Scurlock Oil Co
- Scurlock Permian Corp
- Scurlock Permian Oil Corp
- Scurlock Permian Oil Inc
- Scythian Limited
- Sdg Resources
- Sdg Resources
- SDX Resources Inc
- Seabiscuit Oil Inc
- Seagull Energy
- Seagull Operating Co
- Seagull Operating Co
- Seay Oil & Gas LTD
- Seay Oil Co
- Seeligsons
- Seeligsons
- Seely Oil Co
- Sefton Resources
- Seimller Oil Co
- Sell Well-Servicing Co
- Seminole Gas Processing Plant
- Seminole Pipeline
- Seneca Resources Corp
- Seneca Resources Corp
- Seneca Resources Corp
- Seneca Resources Corp
- Seneca Resources Corp
- Seneca Resources Corp
- Sepco Industries Inc
- Sequoia Exploration Inc
- Setex Oil & Gas
- Seth Herndon Jr
- Sevarg Inc
- Sewall Oil
- Shackelford Oil Co
- Shakespeare Oil Co
- Shar Den Enterprises
- Sharber Gulf Oil
- Shawmar Oil & Gas Co Inc
- Shawmar Oil & Gas Shop
- Sheets Exploration Co
- Shekinah Oil Co Inc
- Shelburne Oil Co
- Sheldon Coleman Enterprises
- Shell
- Shell
- Shell
- Shell
- Shell
- Shell
- Shell
- Shell
- Shell
- Shell
- Shell Food Mart
- Shell Oil Co
- Shell Oil Products Us
- Shell Western E & P
- Shell Western E & P Inc
- Shell Western E & P Inc
- Shelley Oil Co
- Shelton's Oil & Lubricant
- Shenandoah Petroleum Corp
- Shepard Grain Co St Paris Oil
- SHERIDAN Energy
- Sherman Oil & Gas
- Shields Oil Producers Inc
- Shields Oil Producers Inc
- Shileaux Oil Co
- Shileaux Oil Co
- Shindeldecker Oil Co
- Shoreham Oil Svc
- Short Camp
- Short Oil Co
- Short Oil Co Yard
- Shoshone Oil Corp
- Shotmeyer Oil Corp
- Shotmeyer Oil Corp
- Shotmeyer Oil Corp
- Sid Richardson Carbon Co
- Sid Richardson Carbon Co
- Sidwell Co
- Sidwell Co
- Sidwell Co
- Sidwell Oil & Gas Bunkhouse
- Sidwill Oil & Gas Inc
- Sierra Engery
- Signal Oil & Gas
- Signal Oil & Gas Co
- Signal Oil & Gas Corp
- Silco Oil
- Silverado Oil Field
- Silwani Oil Co
- Simar Oil Inc
- Simcon Oil & Gas Corp
- Simek Oil Properties Inc
- Simons Petroleum
- Simple Fuels LLC
- Simpson Walker Enterprises Inc
- Sina Gas Station
- Sinclair Oil Properties
- Singer Bros
- Singer Oil & Gas
- Singin Oil
- Singin Oil Inc
- Sipple Oil Co
- Siroky Oil Management Inc
- Sisters Operating Co
- Site Oil
- Site Oil 29
- Site Oil Co
- Site Oil Co
- Site Oil Co
- Skidmore Energy
- Skidmore Energy
- Skrivanos Engineering
- Skrivanos Engineering Inc
- Skyview Oil Svc
- Slate River Resources LLC
- Slate River Resources LLC
- Slayton Resources Inc
- Slidell Oil
- Sllco Oil
- Sloan Oil Corp
- Smackco Appleton Plant
- Smackover Drilling Co
- Smith Brothers Oil Co Inc
- Smith Energy Corp
- Smith Oil & Gas
- Smith Oil Co
- Smith Oil Co Fuel Ofc
- Smith Oil Co Inc
- Smith Oil Operations
- Smith Operating
- Smith Production Co Inc
- Smith Production Inc
- Smith Production Inc
- SND Energy Co
- SNOI Intl
- Snow Oil & Gas Inc
- Snow Oil & Gas Inc
- Snow Oil Co
- Soap Creek Assoc Inc
- Soc Partnership LTD
- Soc Partnership LTD
- Sohio Petroleum Co
- Sois-Osage Inc
- Sojka's Oil Burner Svc
- Sol Oil LLC
- Somont Oil Co
- Sooner Operating
- Sooner Operating
- Sound Energy Co
- Sous's Oil Burner Svc
- South Bend Station
- South Carlton Operating Co
- South Central Oil Co
- South Fork Inc
- South Fork Inc
- South Heart Co
- South Maryland Oil
- South Maryland Oil
- South Maryland Oil Corp
- South Minnesota Oil Co
- South Texas Oil Field Supls
- Southeastern Ohio Oil & Gas
- Southern Management Svc Inc
- Southern Maryland Oil Inc
- Southern Maryland Oil Inc
- Southern Maryland Oil Inc
- Southern Maryland Oil Inc
- Southern Maryland Oil Inc
- Southern Maryland Oil Inc
- Southern Maryland Oil Inc
- Southern Natural Gas
- Southern Natural Gas
- Southern Natural Gas Co
- Southern Natural Gas Co
- Southern Natural Gas Inc
- Southern Oil & Gas
- Southern Oil Co
- Southern States Corp
- Southern States Oil Production
- Southern Triangle Oil Co
- Southern Triangle Oil Co
- Southern Triangle Oil Co
- Southern Triangle Oil Co
- Southernbi State Oil Co
- Southington Oil Co
- Southland Energy Consultants
- Southland Oil Co Inc
- Southside Oil Co
- Southstar Energy Corp
- Southwest Georgia Oil
- Southwest Georgia Oil Co
- Southwest Georgia Oil Co
- Southwest Oil Co
- Southwest Petroleum Corp
- Southwest Resources Inc
- Southwest Royalties Inc
- Southwest Royalties Inc
- Southwest Royalties Inc
- Southwest Royalties Inc
- Spain Oil
- Sparta Brothers Oil Co
- Sparta Brothers Oil Co
- Spartan Oil Co
- Spartan Petroleum Co
- Spartan Petroleum Co
- Spartan Resources
- Special Products
- Spectra Industrial Oil Svc
- Speedy Oil Co
- Speller Oil Corp
- Spencer Brothers Oil Co
- Spencer Oil Co
- Spillers Oil & Snack Shack
- Spindletop Oil & Gas Co
- Spinx Oil Co
- Spirit Energy
- Spirit Energy 76
- Squyre's Oil Co
- Sradling Oil LP
- St George Oil
- St Helena Olive Oil Co
- St John Oil
- St Mary Land & Exploration Co
- St Mary Land & Exploration Co
- St Pierre Oil Co
- Stallion Energy Inc
- Stan Rugeley
- Stan Rugeley
- Standard Oil Bulk Dealer
- Standard Oil Co
- Standard Oil Co
- Standard Oil Co Ayersville
- Standard Oil Products
- Standard Oil Tank Wagon Svc
- Stanford Oil & Gas
- Stanford Oil & Gas
- Stanford Oil & Gas
- Stanley H Rosenthal Petroleums
- Stanolind Operating Corp
- Staplehurst Oil Co
- Staplehurst Oil Co
- Star Oil Co
- Star Oil Co
- Star Oil Co
- Star Production Inc
- Star Resources
- Star Resources
- Starlight Corp
- Starr Energy Corp
- Starr Energy Corp
- Starr Energy Corp
- Stat Oil Engery Inc
- Statco Inc
- State Line Oil Co
- State Oil Co
- State Oil Co Inc
- Steele Petroleum Co
- Stelaron Inc
- Stelaron Inc
- Stelaron Inc
- Stelbar Oil Corp
- Stelbar Oil Corp Inc
- Stelbar Production Co
- Stengel Oil
- Stephen C Helbing
- Stephen C Helbing
- Stephens & Johnson Operating
- Stephenson Oil Co
- Stephenson Oil Co
- Sterling Oil Of Oklahoma Inc
- Sternberg Oil & Water Works
- Steve Cowgill & Assoc
- Steve Hall Oil & Propane Co
