| 10001 | Sei Operating, LLC | Mandeville, LA 70471 | Oil & Gas Operator | Apr 2025 |
| 10002 | Seidler Oil & Gas Operating, LLC | Alvarado, TX 76009 | Oil & Gas Operator | Apr 2025 |
| 10003 | Seiguf Oil Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2025 |
| 10004 | Seiran E & P Company, LLC | Friendswood, TX 77546 | Oil & Gas Operator | Apr 2025 |
| 10005 | Seisgen Exploration, Inc | Houston, TX 77024 | Gas Operator | Aug 2005 |
| 10006 | Seisma Drilling Corporation | Wichita Falls, TX 76301 | Oil Operator | Aug 2003 |
| 10007 | Seismic Investment Group, Inc. | Houston, TX 77055 | Oil & Gas Operator | Jun 2008 |
| 10008 | Seismic Leasing Service | Denver, CO 80216 | Oil & Gas Operator | Aug 2000 |
| 10009 | Seismotech Energy, Incorporated | Plano, TX 75075 | Oil & Gas Operator | Aug 2003 |
| 10010 | Seistech Development, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2007 |
| 10011 | Seitz, Comegys & Seitz | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 1994 |
| 10012 | Seitz, J. R. & Adam | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2008 |
| 10013 | Seitz, J. R. & Adam, LTD. | Wichita Falls, TX 76307 | Oil Operator | Apr 2025 |
| 10014 | Self Brothers | Montague, TX 76251 | Oil & Gas Operator | Apr 2025 |
| 10015 | Self, Charles D. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2016 |
| 10016 | Self, Charles Lynn | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2025 |
| 10017 | Sellers Lease Service, Inc. | Flatonia, TX 78941 | Oil & Gas Operator | Apr 2025 |
| 10018 | Sellers' Lease Service | Flatonia, TX 78941 | Oil & Gas Operator | Jul 1994 |
| 10019 | Selous Energy, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Jul 2015 |
| 10020 | Sem Operating Company LLC | Houston, TX 77042 | Oil & Gas Operator | Apr 2025 |
| 10021 | Seminole Production Co. | Silsbee, TX 77656 | Oil & Gas Operator | Oct 2002 |
| 10022 | Semper Fidelis Oil & Gas, LLC | Allen, TX 75013 | Oil & Gas Operator | Apr 2013 |
| 10023 | Sendero Energy Inc. | Dallas, TX 75205 | Oil & Gas Operator | Apr 2025 |
| 10024 | Seneca Exploration, LLC | Wichita Falls, TX 76308 | Oil Operator | Apr 2025 |
| 10025 | Seneca Resources Co LLC | Cranberry Township, PA 16066 | Oil & Gas Operator | Jan 2025 |
| 10026 | Seneca Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 10027 | Senkel, Wesley, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2007 |
| 10028 | Senora Resources, Inc. | Dime Box, TX 77853 | Oil & Gas Operator | Apr 2025 |
| 10029 | Sensor Oil & Gas Inc | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 10030 | Sentry Exploration, Inc. | Houston, TX 77006 | Oil & Gas Operator | Apr 2025 |
| 10031 | Sep, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1994 |
| 10032 | Sequoia Energy Resources | Dallas, TX 75207 | Oil & Gas Operator | Apr 2025 |
| 10033 | Sequoia Fossil Fuels, Inc. | Albany, TX 76430 | Oil & Gas Operator | Apr 2025 |
| 10034 | Sequoia Management, LLC | Houston, TX 77060 | Oil & Gas Operator | Nov 2009 |
| 10035 | Sequoia Natural Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Apr 2025 |
| 10036 | Sequoia Oil & Gas, Inc. | Fort Worth, TX 76164 | Oil & Gas Operator | Jan 1993 |
| 10037 | Ser E&P, Inc. | McKinney, TX 75069 | Oil & Gas Operator | Apr 2025 |
| 10038 | Serco Operating LLC | Katy, TX 77450 | Oil Operator | Apr 2025 |
| 10039 | Serendipity Exploration, Inc. | Weatherford, TX 76087 | Gas Operator | May 1997 |
| 10040 | Serna Inc. | Austin, TX 78733 | Oil Operator | Apr 2025 |
| 10041 | Serra Energy, Inc. | Hailey, ID 83333 | Oil & Gas Operator | May 2011 |
| 10042 | Service Clearing Corp. | Dallas, TX 75229 | Oil & Gas Operator | Apr 2025 |
| 10043 | Service Drilling Co. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 1998 |
| 10044 | Service Drilling Co., L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2003 |
| 10045 | Service Production Company, Inc. | Santa Fe, TX 77510 | Oil & Gas Operator | May 1999 |
| 10046 | Setab Prod. | Batson, TX 77519 | Oil & Gas Operator | Apr 2025 |
| 10047 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 10048 | Setex Oil Company, L.P. | Houston, TX 77060 | Oil & Gas Operator | Jan 2000 |
| 10049 | Sev Texas Operating, LLC | Long Beach, CA 90755 | Oil & Gas Operator | Apr 2025 |
| 10050 | Seven Cross Operating, LLC | Santa Anna, TX 76878 | Oil & Gas Operator | Apr 2025 |
| 10051 | Seven Falls Company | Dallas, TX 75201 | Oil & Gas Operator | May 2008 |
| 10052 | Seven Wells Oil & Gas Expl. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2014 |
| 10053 | Sevenbar Resources, LLC | Hallettsville, TX 77964 | Oil & Gas Operator | Apr 2025 |
| 10054 | Seventy Oil Co. | Freer, TX 78357 | Oil & Gas Operator | Mar 2002 |
| 10055 | Sevenx, LLC | Iowa Park, TX 76367 | Oil Operator | Apr 2025 |
| 10056 | SFJV Enterprises, Inc. | Berclair, TX 78107 | Gas Operator | Aug 1998 |
| 10057 | SFM Holdings, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 1995 |
| 10058 | SG Interests, Inc. | Houston, TX 77010 | Oil & Gas Operator | Jun 2007 |
| 10059 | SGB Oil LLC | Luling, TX 78648 | Oil Operator | Apr 2025 |
| 10060 | SGP Operating LLC | Dallas, TX 75205 | Oil & Gas Operator | Apr 2025 |
| 10061 | Sha Stephens, Incorporated | Weatherford, TX 76087 | Oil & Gas Operator | Apr 2006 |
| 10062 | Sha-Jam Operating Corp. | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 10063 | Shack, Bill | Albany, TX 76430 | Oil & Gas Operator | Apr 2006 |
| 10064 | Shackelford Oil Co | Midland, TX 79707 | Oil & Gas Operator | Feb 2025 |
| 10065 | Shackelford,Frank Oil Properties | Midland, TX 79701 | Oil & Gas Operator | Aug 1997 |
| 10066 | Shadawn Corporation | Wichita Falls, TX 76310 | Oil & Gas Operator | Mar 2005 |
| 10067 | Shady Oil Co. | Brownwood, TX 76801 | Oil & Gas Operator | Apr 2025 |
| 10068 | Shahan, Donald Allan | Abilene, TX 79602 | Oil Operator | Apr 2025 |
| 10069 | Shaida, John H. | Wichita, KS 67226 | Oil & Gas Operator | Apr 2025 |
| 10070 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | Jan 2025 |
| 10071 | Shale Energy LLC | Jeffersonville, KY 40337 | Oil Operator | Dec 2018 |
| 10072 | Shale Hunter, LLC | Irving, TX 75039 | Oil & Gas Operator | Jan 2016 |
| 10073 | Shale Oil Co., Inc. | Liberty, TX 77575 | Oil & Gas Operator | Apr 2025 |
| 10074 | Shale Operating Co. | Dallas, TX 75356 | Oil & Gas Operator | Apr 2025 |
| 10075 | Shallow Production Oper, LLC | Austin, TX 78738 | Oil Operator | Apr 2025 |
| 10076 | Shamrock Minerals Corporation | Merkel, TX 79536 | Oil & Gas Operator | Nov 1998 |
| 10077 | Shamrock Oil Co. | Sugar Land, TX 77478 | Oil & Gas Operator | Mar 2008 |
| 10078 | Shamrock Texas Partners L.P. | San Angelo, TX 76904 | Oil & Gas Operator | Apr 2025 |
| 10079 | Shana Petroleum Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2002 |
| 10080 | Shanafelt Oil Operating, LLC | Jacksboro, TX 76458 | Oil Operator | Apr 2025 |
| 10081 | Shanafelt, Arthur | Jacksboro, TX 76458 | Oil & Gas Operator | May 2003 |
| 10082 | Shanghai Energy Corporation | Houston, TX 77027 | Oil & Gas Operator | Apr 2003 |
| 10083 | Shanks, Bob | Haskell, OK 74436 | Oil Operator | Sep 2002 |
| 10084 | Shannon Energy | Liberal, KS 67901 | Oil & Gas Operator | Feb 1999 |
| 10085 | Shappell Oil Company | Holliday, TX 76366 | Oil & Gas Operator | Sep 2012 |
| 10086 | Shappell Oil Company, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 10087 | Share Petroleum Corp. | Mabank, TX 75147 | Oil Operator | Apr 2025 |
| 10088 | Sharoco Corporation | Fort Worth, TX 76121 | Oil & Gas Operator | Dec 1996 |
| 10089 | Sharon Hunter Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Sep 2012 |
| 10090 | Sharon Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Aug 2010 |
| 10091 | Sharp Image Energy, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Apr 2025 |
| 10092 | Sharp, Cherry L | Jacksboro, TX 76458 | Oil Operator | Apr 2025 |
| 10093 | Sharp, John T. | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 2014 |
| 10094 | Sharpe Energy Company | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 10095 | Shaw, Henry Jr. | Midland, TX 79702 | Oil & Gas Operator | Oct 2018 |
| 10096 | Shaw, T. G. Oil Company, LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | Apr 2025 |
| 10097 | Shawver & Shawver | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 10098 | Shearer Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2002 |
| 10099 | Shed Oil Company | Electra, TX 76360 | Oil Operator | Apr 2025 |
| 10100 | Sheer Energy, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |