| 24801 | Rio Exploration Company | San Antonio, TX 78209 | Gas Operator | Dec 2005 |
| 24802 | Rio Grand Exploration, LLC | San Antonio, TX 78216 | Oil & Gas Operator | Jul 2025 |
| 24803 | Rio Grande Drilling Company | San Antonio, TX 78212 | Oil & Gas Operator | Dec 1999 |
| 24804 | Rio Grande E&P II, LLC | Houston, TX 77092 | Gas Operator | Jul 2025 |
| 24805 | Rio Grande E&P, LLC | Houston, TX 77024 | Gas Operator | May 2022 |
| 24806 | Rio Grande Energy | Laredo, TX 78041 | Oil & Gas Operator | May 2004 |
| 24807 | Rio Interstate Oil, Inc. | Oklahoma City, OK 73189 | Oil & Gas Operator | Sep 1994 |
| 24808 | Rio Mesa Resources Inc | | Oil & Gas Operator | Jul 2022 |
| 24809 | Rio O & P LLC | Pasadena, TX 77504 | Oil Operator | Jul 2025 |
| 24810 | Rio Oil And Gas (Permian) II,LLC | The Woodlands, TX 77382 | Oil & Gas Operator | Nov 2024 |
| 24811 | Rio Petroleum, Inc. | Amarillo, TX 79102 | Oil & Gas Operator | Jul 2025 |
| 24812 | Rio Rocky Enterprises, Inc. | Eldorado, TX 76936 | Oil & Gas Operator | Jul 2025 |
| 24813 | Rio VIsta Operating LLC | Eufaula, OK 74432-0789 | Gas Operator | Apr 2025 |
| 24814 | Rio-Tex, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Jul 2025 |
| 24815 | Ripco | | Oil & Gas Operator | Jul 1986 |
| 24816 | Rippy Branch Oil Co. | Grandfalls, TX 79742 | Oil & Gas Operator | Apr 2022 |
| 24817 | Rippy Oil Company | Tyler, TX 75702 | Oil & Gas Operator | Jul 2025 |
| 24818 | Riptide Energy LLC | Austin, TX 78701 | Oil & Gas Operator | Jul 2025 |
| 24819 | Risco La Sara Operations, LLC | Houston, TX 77056 | Oil & Gas Operator | Aug 2014 |
| 24820 | Rise Petroleum Investments LLC | Tomball, TX 77377 | Oil & Gas Operator | Jul 2025 |
| 24821 | Riseden Services, Inc. | Houston, TX 77256 | Oil & Gas Operator | Sep 1997 |
| 24822 | Riseden, LTD | | Oil & Gas Operator | Nov 1989 |
| 24823 | Risher Company, Inc. | | Oil & Gas Operator | Jul 2001 |
| 24824 | Rising Star 2000 Oil & Gas, Inc. | | Oil Operator | Dec 2024 |
| 24825 | Rising Star Energy PTR, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Jul 2025 |
| 24826 | Rising Star Energy, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Aug 2006 |
| 24827 | Rising Star Energy-Oper Co., LLC | | Oil & Gas Operator | Nov 2006 |
| 24828 | Rising Star Petroleum, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Apr 2010 |
| 24829 | Rissman Lease Operating | Oklahoma City, OK 73116 | Oil Operator | Dec 1996 |
| 24830 | Ristau Ricky J | Warren, PA 16365-3560 | Oil & Gas Operator | Dec 2024 |
| 24831 | Rister Oil&Gas International LLC | Eastland, TX 76448 | Oil & Gas Operator | Jul 2025 |
| 24832 | Rister, Dewey | Avoca, TX 79503 | Oil & Gas Operator | Jul 2025 |
| 24833 | Ritchie C Stewar | | Oil Operator | Aug 1982 |
| 24834 | Ritchie Explorat | | Oil & Gas Operator | Dec 1996 |
| 24835 | Ritchie Exploration | | Oil Operator | Aug 1995 |
| 24836 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Mar 2025 |
| 24837 | Ritchie Petroleum Corporation, Inc. | Pennsboro, WV 26415-0000 | Oil & Gas Operator | Dec 2021 |
| 24838 | Ritchie, A. Scott | Wichita, KS 67202 | Oil Operator | Mar 1988 |
| 24839 | Ritchie, H. G. Jr. | Taft, TX 78390 | Oil & Gas Operator | Jul 2025 |
| 24840 | Ritco, Inc | Barackville, WV 26559 | Oil & Gas Operator | Dec 2021 |
| 24841 | Rittenhouse Oil & Gas Co. | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 24842 | Ritter Properties, LTD. | Fredericksbrg, TX 78624 | Oil & Gas Operator | Jul 2025 |
| 24843 | Ritter, Laber & Associates, Inc. | Williston, ND 58802 | Oil & Gas Operator | Mar 2025 |
| 24844 | River Bend Operating, Inc. | | Oil & Gas Operator | Jul 1999 |
| 24845 | River City Resources Inc | Tulsa, OK 74119 | Oil & Gas Operator | Nov 1997 |
| 24846 | River Energy Co., Inc. | | Gas Operator | Dec 2012 |
| 24847 | River Gas Co | Marietta, OH 45750 | Oil & Gas Operator | Dec 1993 |
| 24848 | River Gas Corporation | Tuscaloosa, AL 35406-2233 | Gas Operator | Dec 2000 |
| 24849 | River Gas Of Utah Inc | Northport, AL 35476 | Gas Operator | Feb 1995 |
| 24850 | River Ridge Gravel Co | Meadville, PA 16335-9149 | Oil Operator | Dec 2024 |
| 24851 | River Road Production, LLC | Hays, KS 67601 | Oil Operator | Feb 1997 |
| 24852 | River Rock Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2025 |
| 24853 | River Rouge Minerals | | Oil & Gas Operator | Dec 2024 |
| 24854 | River Rouge Minerals Inc | | Oil & Gas Operator | Mar 1981 |
| 24855 | River Valley Energy Inc | Little Hocking, OH 45742 | Oil & Gas Operator | Dec 2024 |
| 24856 | River Valley Oil LLC | Konawa, OK 74849 | Oil Operator | May 2025 |
| 24857 | Rivercity Operating, Inc. | Austin, TX 78766 | Oil & Gas Operator | Jul 2025 |
| 24858 | Riverfront Exploration LLC | Fort Smith, AR 72901 | Gas Operator | Apr 2025 |
| 24859 | Riveria Drilling | | Oil Operator | Aug 1984 |
| 24860 | Riverine, L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2021 |
| 24861 | Rivershore Operating LLC | Dallas, TX 75206 | Oil & Gas Operator | Jul 2025 |
| 24862 | Riverside Energy Michigan LLC | | Oil & Gas Operator | May 2025 |
| 24863 | Riverside Oil & Gas, Inc | Burkesville, KY 42717 | Oil & Gas Operator | Dec 2023 |
| 24864 | Riverside Petrol | | Oil Operator | Sep 1995 |
| 24865 | Riverside Petroleum & Prod. | Oxford, MS 38655 | Oil & Gas Operator | Dec 2023 |
| 24866 | Riverside Resources, Inc. | | Oil & Gas Operator | Oct 2015 |
| 24867 | Riverstone Energy LLC | Seminole, OK 74868 | Oil & Gas Operator | May 2025 |
| 24868 | Riverstone Energy Operating, LLC | Houston, TX 77090 | Oil & Gas Operator | Jul 2025 |
| 24869 | Riverwood Production Co., Inc. | | Oil & Gas Operator | Nov 1990 |
| 24870 | Rives Owen H | Holdenville, OK 74848-0913 | Oil & Gas Operator | Nov 2000 |
| 24871 | Riviera Drilling & Exploration Company | | Oil & Gas Operator | Sep 2013 |
| 24872 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 24873 | Rixleben Jeffrey | West Chicago, IL 60186-0978 | Oil Operator | Feb 2016 |
| 24874 | Rixleben Thomas B Estate | Ada, OK 74820 | Oil & Gas Operator | Mar 2014 |
| 24875 | RJ Energy, LLC | Garnett, KS 66032 | Oil Operator | Mar 2025 |
| 24876 | RJ Schreiner SR | Freedom, PA 15042-9353 | Oil & Gas Operator | Dec 2015 |
| 24877 | RJ Williams Oil & Gas LLC | Ardmore, OK 73401 | Oil & Gas Operator | May 2025 |
| 24878 | Rja Energy LLC | Norman, OK 73069-8224 | Oil & Gas Operator | May 2025 |
| 24879 | RJD Management Co., Inc. | Lubbock, TX 79408 | Oil & Gas Operator | Jul 2025 |
| 24880 | RJKB Foster Operating LLC | Cisco, TX 76437 | Oil & Gas Operator | Jul 2025 |
| 24881 | RJM Company | Claflin, KS 67525 | Oil & Gas Operator | Mar 2025 |
| 24882 | RJM Oil Company, LLC | Irving, TX 75060 | Oil Operator | Jul 2025 |
| 24883 | RJW Oil And Gas, LLC | Cross Lane, WV 25313 | Oil & Gas Operator | Dec 2023 |
| 24884 | RK Petroleum Corp,Enex Res,Peninsular Oil Corp. | | Oil Operator | Dec 2024 |
| 24885 | Rki Energy Resources, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2021 |
| 24886 | Rki Exploration & Production LLC | Tulsa, OK 74172 | Oil & Gas Operator | Jul 2025 |
| 24887 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | May 2025 |
| 24888 | RKR Exploration Inc | Seminole, OK 74868 | Oil & Gas Operator | Apr 2025 |
| 24889 | RKW Operating LLC | Weatherford, TX 76085 | Gas Operator | Jul 2025 |
| 24890 | RL Investment, LLC | Hill City, KS 67642 | Oil Operator | Mar 2025 |
| 24891 | RL&B Energy LLC | Wichita Falls, TX 76230 | Oil & Gas Operator | Apr 2025 |
| 24892 | RLB Enterprises, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Feb 1997 |
| 24893 | RLB Investments LLC | Holdenville, OK 74848-9421 | Oil Operator | Jul 2017 |
| 24894 | RLM Energy Company Inc. | Monroe, LA 71201 | Oil & Gas Operator | Mar 2008 |
| 24895 | RLP Gulf States, L.L.C. | | Oil & Gas Operator | Apr 2012 |
| 24896 | RLS Oil Company | Tulia, TX 79088 | Oil & Gas Operator | Jul 2025 |
| 24897 | RLS Partnership | | Oil Operator | Apr 1983 |
| 24898 | RLT Investment | Morland, KS 67650 | Oil Operator | Mar 2009 |
| 24899 | Rlu Oil & Gas, Inc. | Devine, TX 78016 | Oil & Gas Operator | Jul 2025 |
| 24900 | Rlu Operating, LLC | Devine, TX 78016 | Oil & Gas Operator | Jul 2025 |