- Steve Hefner Oil Trtg Compnds
- Stevens & Johnson Operating Co
- Stevenson Oil & Chemical Corp
- STG
- Stockdale Oil & Gas Inc
- Stockholm Oil Inc
- Stockton Oil Co
- Stone Energy Corp
- Storm Prichard Co
- Stovall Oil Co
- Strachan Exploration Inc
- Strat Energy & Consulting
- Stratco Operating Co Inc
- Stratos Oil
- Strawn Drilling Co
- Strawn Drilling Co
- Stray Oil Co
- Stray Oil Co
- Stream Line
- Strickland Jaeger Inc
- Stroud Production
- Suburban Oil
- Suffolk Oil Office
- Sugar Creek Producing Co
- Sugar Oil Co
- Sugar Oil Co
- Sugg Oil Co
- Sullivan & Co
- Sulphur River Exploration
- Sulphur River Exploration Inc
- Sulphur River Gathering
- Summerfield Oil & Gas Devmnt
- Summit Energy
- Summit Oil & Gas Inc
- Summit Oil Co
- Summit Oil Corp
- Summit Petroleum Corp
- Summit Petroleum Corp
- Sun Oil Co
- Sun Pipeline Co
- Sun State Oil Inc
- Sun-West Oil & Gas
- Suncoast Oil Co
- Suncoast Oil Co
- Suncrest Oil
- Sundown Energy
- Sundown Energy Inc
- Sunfire Energy
- Sunoco Oil Co
- Sunray Energy Inc
- Sunray Oil Co
- Sunray Oil Co
- Sunray Petroleum
- Sunrise Oil Corp
- Suoco Oil Corp
- Super Value Oil Co
- Super Value Oil Co
- Superior Oil Co
- Superior Oil Co
- Superior Oil Co
- Superior Oil Field Supply
- Survior Oil Gas
- Sutherland Oil & Propane
- Sutton-Rhoads Exploration Inc
- Swager & Assoc LTD
- Swager & Assoc LTD
- Swan Petroleum
- Swanner Properties
- Swanner Properties
- Swanson Oil & Gas Inc
- Swartz Oil Co
- Sweet Lake Land & Oil
- Sweetwater Valley Oil
- Swepi
- Swift Energy Co
- Swift Energy Co
- Swift Energy Co
- Swift Oil Co
- Sylvan Oil Operating Co
- Synergex Inc
- Synergy Operating
- Syntroleum Corp
- T & F Oil Co LLC
- T & F Oil Co LLC
- T & K Oil Inc
- T Alan Layne
- T C Oil Co
- T C Oil Co
- T K Drilling Corp
- T L Clark Oil Producers
- T L Clark Oil Producers
- T L Clark Oil Producers
- T L Oil Co
- T R Oil Svc Inc
- T R Operating
- T-N-T Engineering Inc
- Tacor Resources Inc
- Tallman Oil Co
- Tamarack Petroleum
- Tamarack Petroleum Co
- Tamarack Petroleum Co Inc
- Tammany Oil & Gas LLC
- Tandem Energy Corp
- Tannehill Oil
- Tap Petroleum Inc
- Targa Resources
- Target Oil & Gas
- Target Oil Co
- TAT Inc
- Taurus Energy
- Taurus Energy Corp
- Taurus Minerals Inc
- Taurus Oil Co
- Tauy Oil Inc
- Taylor International Inc
- Taylor Oil & Gas
- Taylor Oil Co
- Taylor Oil Co
- Taylor Oil Co
- Taylor Oil Co
- Taylor Oil Co
- Taylor Oil Co
- Taylor Oil Co Southe
- Taylor Oil Southeast Inc
- Taylor Road Oil & Lube
- TBT Oil
- TCINA
- TCINA
- Team Energy Inc
- Teapot Production Inc
- Tech Force Inc
- Teckla Oil Co LLC
- Ted Mc Gonigal Drilling Co
- Teg Oil Gas USA Inc
- Teichgraeber Oil
- Tekenergy Inc
- TEL Oil & Gas
- Tellus Energy Co
- Tellus Operating Group
- Tellus Operating Group
- Tellus Operating Group
- Telvis Oil
- Tema
- TEMA Oil & Gas Co
- Temblor Petroleum Co
- Temple Oil & Gas Co
- Tengasco Inc
- Tengasco Oil
- Tenneco Oil
- Tenneco Oil Co
- Tennyson Office
- Tensas Delta Exploration
- Tenstrike Oil & Gas
- Teppco Crude Oil LLC
- Teppco Crude Oil LP
- TEPPCO Natural Gas Svc
- TEPPCP Crude Oil
- Terce Group Inc
- Term Oil & Gas Co
- Terrell Oil & Gas Production
- Terrible Herbst Oil Co
- Terrible Herbst Oil Co
- Terrible Herbst Oil Co
- Terrier Oil Co
- Tetco
- Tetra Resources
- Tevis Oil Inc
- Tex Con Oil Co
- Tex-Ok Energy
- Tex-Ok Energy LP
- Tex-Ok Producers Inc
- Texaco Inc
- Texakota Inc
- Texakota Oil Co
- Texan Petroleum Corp
- Texas Crude Inc
- Texas General Land Off Oil
- Texas Oil & Gas Corp
- Texas Oil Co
- Texas Oil Express
- Texas Oil Field Products
- Texas Petroleum
- Texas Petroleum Co
- Texas Petroleum Co
- Texas Petroleum Investment Co
- Texas Secondary Oil Corp
- Texas Secondary Oil Corp
- Texas State Oil & Gas Co
- Texland Petroleum Inc
- Texland Petroleum Inc
- TGC Industries Inc
- Thermo Co
- Thomas Bowden Oil Burner Svc
- Thomas Enterprises
- Thomas Exploration Co
- Thomas Joe Oil Gas & Mineral
- Thomas N Berry & Co
- Thomas Oil Co
- Thomas Oil Co
- Thomas Operating Co
- Thomas Petroleum
- Thomas S Price
- Thomason Oil Co
- Thomason Petroleum Inc
- Thompson & Thompson
- Thompson Brothers
- Thompson Oil & Gas
- Thompson Oil Co
- Thompson Oil Co
- Thompson Oil Co
- Thompson Oil Co Serv Sta
- Thornhill Oil Co 14
- Thornhill Oil Co Inc Food Shop
- Thornhill Oil Co Inc Food Shop
- Thornton Oil Co
- Thornton Oil Co
- Thornton Oil Corp
- Thornton Oil Corp
- Thornton Oil Corp
- Thornton Oil Corp
- Thornton Oil Corp Num 38
- Thorofare Resources Inc
- Thorofare Resources Inc
- Thorton Oil Corp
- Three B Oil Co
- Three B Oil Co
- Three D Oil Co
- Three Point Oil
- Three Star Drilling & Prdcng
- Three Star Drilling & Prdcng
- Threeway Drilling Co
- Threshold Development Co
- Thrifty Oil
- Thrifty Oil
- Thrifty Oil Co
- Tidelands Oil Corp
- Tija Investments
- Tilley Oil & Gas Inc
- Timberline Oil & Gas Corp
- Timberline Oil & Gas Corp
- Timberline Production Co
- Timco Inc
- Time Oil Co
- Times Oil Corp
- Times Oil Corp
- Tipps Casing Pulling Co
- Tipps Casing Pulling Co
- Tipps Sharkey Steaming & Test
- Tipps Sharkey Steaming & Test
- Titan Global Oil Svc
- Titan Global Oil Svc
- Titan International Energy
- Titan Oil & Gas
- Titan Oil & Gas
- Titan Oil & Gas
- Titan Oil Analysis Laboratory
- TLC Oil Tools
- TLM Resources Inc
- TOKCO
- Tom Brown Inc
- Tom Brown Inc
- Tom H Baldwin Oil Properties
- Tom Mc Gee Corp
- Tomkat Limited
- Tonka Oil & Gas Production Inc
- Tony's Oil Co Inc
- Toomey Oil Co
- Topaz Production Group Inc
- Topper Oil Co
- Torch Energy
- Torgerson & Torgerson
- Torqued Up Oil Field
- Torqued Up Oil Field
- Torqued Up Oil Field Prdctns
- Tosco Distribution
- Total
- Total
- Total
- Total Fina Elf
- Total Fina Elf
- Total Fina Elf Enp USA Inc
- Total Minatome
- Total Minatome Corp
- Towne Exploration Co
- Townsend Co
- Townsend Co
- Trace Oil
- Tracker Mineral
- Trade Oil Co
- Trade Wilco
- Trans European Oil Co
- Trans Montaigne Inc
- Transcanada
- Transcontinent Oil Co
- Transpecto
- Transpetco
- Travelers Oil Co
- Travelers Oil Co
- Travelers Oil Co
- Travelers Oil Co
