| 1 | S & C Resources Inc | Cleveland, OK 74020 | Oil Operator | May 2025 |
| 2 | S & F Energy LLC | Ponca City, OK 74601-1618 | Oil Operator | Apr 2026 |
| 3 | S & G Operating LLC | McLoud, OK 74851 | Oil & Gas Operator | May 2026 |
| 4 | S & H Tank Service Of Okla | Lindsay, OK 73052 | Oil & Gas Operator | Mar 2017 |
| 5 | S & J Oil Company | Ellinwood, KS 67526 | Oil Operator | Jun 2000 |
| 6 | S & J Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2015 |
| 7 | S & K Oil Company | Tulsa, OK 74101 | Oil & Gas Operator | Jul 1994 |
| 8 | S & M Production Inc | Pawnee, OK 74058 | Oil & Gas Operator | Aug 2023 |
| 9 | S & S Energy | Englewood, CO 80112 | Oil & Gas Operator | Mar 2015 |
| 10 | S & S Oil & Gas Corporation | Okemah, OK 74859-0659 | Oil & Gas Operator | Sep 2014 |
| 11 | S & S Oil & Gas LLC | Skiatook, OK 74070 | Oil & Gas Operator | Jul 2016 |
| 12 | S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | Jul 2026 |
| 13 | S & S Production Company | Addison, TX 75001 | Oil Operator | Jul 2024 |
| 14 | S & S Star Operating, LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Jun 2026 |
| 15 | S & T SWD LLC | Clinton, OK 73601-3130 | Oil Operator | Feb 2017 |
| 16 | S & W Engine Supply | Oklahoma City, OK 73107 | Oil Operator | Jun 2003 |
| 17 | S & W Engine Supply Inc | Oklahoma City, OK 73143 | Oil Operator | Jan 2000 |
| 18 | S & W Transports Inc | Velma, OK 73491 | Oil Operator | Mar 2026 |
| 19 | S A C Operating Inc | Woodward, OK 73802-1749 | Oil & Gas Operator | Jan 1999 |
| 20 | S H Production LLC | Tulsa, OK 74130-1418 | Oil & Gas Operator | Apr 2026 |
| 21 | S J Murphy Oil And Gas Inc | | Oil & Gas Operator | Apr 2026 |
| 22 | S M Brothers Investments LLC | Denver, CO 80210-6059 | Oil Operator | Mar 2026 |
| 23 | S N D Energy Company, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Jul 2026 |
| 24 | S O S Recovery Inc | Enid, OK 73703-2403 | Oil & Gas Operator | Jul 2023 |
| 25 | S R W Oil | Laverne, OK 73848 | Oil & Gas Operator | May 2026 |
| 26 | S T Industries Inc | Drumright, OK 74030 | Oil & Gas Operator | Mar 2011 |
| 27 | S/H Petroleum Corporation | Hennessey, OK 73742-0477 | Oil & Gas Operator | Feb 2016 |
| 28 | Sabco Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2018 |
| 29 | Saber Industries LP | Dallas, TX 75230 | Oil Operator | Dec 2024 |
| 30 | Sabine Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 31 | Sabine Oil & Gas LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 32 | Sabos George U | Tulsa, OK 74170 | Oil & Gas Operator | Jan 2013 |
| 33 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2026 |
| 34 | Sac & Fox Nation | | Oil & Gas Operator | Apr 2026 |
| 35 | Safe Earth Management Inc | | Oil Operator | Nov 2021 |
| 36 | Safe Earth Management LLC | Hammon, OK 73650 | Oil Operator | Nov 2025 |
| 37 | Safire Resources LLC (Osage Only) | | Oil & Gas Operator | Apr 2026 |
| 38 | Sage Drilling Co Inc | Wichita, KS 67202 | Oil & Gas Operator | Nov 1998 |
| 39 | Sage Energy Company | San Antonio, TX 78215 | Oil & Gas Operator | Jul 2026 |
| 40 | Sage NR Ok LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2026 |
| 41 | Sagely Floyd E Properties LTD | Fort Smith, AR 72917-0308 | Gas Operator | Jan 2015 |
| 42 | Saiber Michael L & Lora L | Saxonburg, PA 16056 | Oil Operator | Mar 1997 |
| 43 | Sajac Energy Company LLC | Duncan, OK 73533 | Oil & Gas Operator | May 2026 |
| 44 | Sallee Oil Corporation | Collinsville, OK 74021 | Oil & Gas Operator | Apr 2026 |
| 45 | Salt Creek Energy Company LLC | Shawnee, OK 74802-1505 | Oil & Gas Operator | Apr 2026 |
| 46 | Salt Creek Production, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Jul 2026 |
| 47 | Salt Fork Producers Inc | Pond Creek, OK 73766 | Oil & Gas Operator | Jan 1995 |
| 48 | Salty Dog Disposal LLC | Cement, OK 73017 | Oil Operator | May 2026 |
| 49 | Sam W Mays Jr LLC | Eureka, KS 67045 | Oil & Gas Operator | Apr 2018 |
| 50 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 51 | Samhill LLC | Tonkawa, OK 74653-5533 | Oil & Gas Operator | Apr 2026 |
| 52 | Samis Oil Company, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Sep 2000 |
| 53 | Samson Exploration LLC | Tulsa, OK 74101 | Oil & Gas Operator | May 2026 |
| 54 | Samson Gas Producing Company | Tulsa, OK 74103 | Oil & Gas Operator | May 2001 |
| 55 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 56 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2026 |
| 57 | Samuel Joe L | Tulsa, OK 74135-7805 | Oil & Gas Operator | Jan 2001 |
| 58 | San Francisco-Okla Pet Ex Inc | | Oil & Gas Operator | Apr 2014 |
| 59 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Apr 2026 |
| 60 | Sananco Energy Corp | Naples, FL 33941 | Oil & Gas Operator | Jul 2013 |
| 61 | Sanchez-O'Brien Oil & Gas Corp | Houston, TX 77057 | Oil & Gas Operator | May 1998 |
| 62 | Sand Boy Production Company | Bartlesville, OK 74003-9273 | Oil & Gas Operator | Apr 2026 |
| 63 | Sand Creek Resources LLC | Woodward, OK 73801-5222 | Oil & Gas Operator | May 2026 |
| 64 | Sand Point LLC | Oklahoma City, OK 73132 | Oil & Gas Operator | Dec 2020 |
| 65 | Sand Point Production Inc | Oklahoma City, OK 73172 | Oil & Gas Operator | Apr 2026 |
| 66 | Sand Resources LLC | Norman, OK 73072-4805 | Oil & Gas Operator | Aug 2012 |
| 67 | Sand Springs Oil & Gas Co. | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2026 |
| 68 | Sandia Operating Corp. | San Antonio, TX 78270 | Oil & Gas Operator | May 2010 |
| 69 | Sandler Raymond C | Los Angeles, CA 90067 | Oil Operator | Dec 1999 |
| 70 | Sandlot Oil & Gas LLC | Gruver, TX 79040 | Oil & Gas Operator | Jul 2026 |
| 71 | Sandpoint Operating, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2026 |
| 72 | Sandra Corporation (The) | Pampa, TX 79066-2474 | Gas Operator | Oct 1996 |
| 73 | Sandra Turner Dba Grand Lake Resources | Hennessey, OK 73742 | Oil & Gas Operator | Apr 2026 |
| 74 | Sandridge Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2018 |
| 75 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Jul 2026 |
| 76 | Sandrock Energy LLC | Luther, OK 73054 | Oil & Gas Operator | May 2026 |
| 77 | Sandstone Hills Energy Inc | Seminole, OK 74818-1938 | Oil & Gas Operator | Sep 2014 |
| 78 | Sandstone Resources, Inc. | Houston, TX 77043 | Oil & Gas Operator | Jul 2026 |
| 79 | Sandy Petroleum Inc | Shawnee, OK 74801-5634 | Oil & Gas Operator | Mar 2026 |
| 80 | Sanford & Jenkins | Henryetta, OK 74437-1411 | Oil & Gas Operator | Mar 2015 |
| 81 | Sanford Casondra | Ada, OK 74820-4460 | Oil & Gas Operator | May 2013 |
| 82 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | Jul 2026 |
| 83 | Sanner Jeffrey B Dba Bryant Lyn Production | Velma, OK 73491 | Oil Operator | Mar 2026 |
| 84 | Sanner Oil Co LLC | Duncan, OK 73533 | Oil Operator | Apr 2026 |
| 85 | Sanner Oil Company | Velma, OK 73491-0550 | Oil & Gas Operator | Jan 2014 |
| 86 | Sanook Inc | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Jan 2007 |
| 87 | Sanquip LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | May 2026 |
| 88 | Santa Fe Braun Inc | Dallas, TX 75240-6620 | Oil & Gas Operator | Mar 1995 |
| 89 | Santa Fe Energy Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2015 |
| 90 | Santa Fe Energy Operating Partner LP | Midland, TX 79701 | Oil & Gas Operator | Sep 2004 |
| 91 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 92 | Santa Fe Operating LLC | Frisco, TX 75034 | Oil & Gas Operator | May 2026 |
| 93 | Santa Fe-Andover Oil Co | Tulsa, OK 74172 | Oil & Gas Operator | Sep 2000 |
| 94 | Santa Rita Resources Inc & Subs | | Oil & Gas Operator | Mar 2015 |
| 95 | Santo Resources Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 1998 |
| 96 | Saqus Oil Co | Oklahoma City, OK 73107 | Oil & Gas Operator | May 2001 |
| 97 | Sarkeys Inc | | Oil & Gas Operator | Dec 1998 |
| 98 | Sasakwa Operating LLC | Oklahoma City, OK 73179-1902 | Oil & Gas Operator | Mar 2026 |
| 99 | Sasser Company Inc (The) | Perkins, OK 74059-0515 | Oil & Gas Operator | Jan 2026 |
| 100 | Savage Exploration, Inc. | San Marcos, TX 78666 | Oil & Gas Operator | Jul 2026 |