| 901 | Reynolds, Dan Company | Camden, AR 71701 | Oil Operator | Feb 2024 |
| 902 | Reynolds, E. P., Jr. | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 903 | Reynolds, J David Company | Camden, AR 71701 | Oil & Gas Operator | Feb 2024 |
| 904 | Reynolds, J. C. & W. F. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2024 |
| 905 | Reynolds, Richard | Seymour, TX 76380 | Oil & Gas Operator | Mar 2008 |
| 906 | Reyrock Oil, LLC | Limestone, NY 14753 | Oil & Gas Operator | Dec 2022 |
| 907 | RF Operating And Supply Inc | | Oil & Gas Operator | Feb 2013 |
| 908 | RFB Exploration | | Oil Operator | Feb 1981 |
| 909 | Rfe Operating, LLC | Tyler, TX 75703 | Oil & Gas Operator | Apr 2024 |
| 910 | RG Exploration, LLC | Midland, TX 78705 | Oil & Gas Operator | Feb 2020 |
| 911 | RGN Company, Inc. | Stockton, KS 67669 | Oil Operator | Oct 2023 |
| 912 | RGX Energy LLC | Plano, TX 75025 | Oil & Gas Operator | Oct 2019 |
| 913 | RH Capital-Beets, LLC | Jefferson City, MO 65101 | Oil Operator | Dec 2023 |
| 914 | RHB Exploration & Production,LLC | Grapevine, TX 76099 | Oil & Gas Operator | Apr 2024 |
| 915 | RHC Energy (USA) LLC | Houston, TX 77027 | Oil Operator | Apr 2024 |
| 916 | RHDK Oil & Gas LLC/Dba Red Hill | Dover, OH 44622-9801-9801 | Oil & Gas Operator | Dec 2023 |
| 917 | Rheaco Oil Company, LTD. | Sourlake, TX 77659 | Oil Operator | Apr 2024 |
| 918 | Rheata Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2024 |
| 919 | Rheem Resources Inc | Wichita, KS 67220 | Oil Operator | Aug 1998 |
| 920 | Rhine Oil Co LLC | Dalton, OH 44618 | Oil & Gas Operator | Dec 1999 |
| 921 | Rhino Operating Company LLC | Brentwood, TN 37027-8760 | Oil & Gas Operator | Dec 2023 |
| 922 | Rhoades Oil Co | Tulsa, OK 74136-5575 | Oil & Gas Operator | Aug 2013 |
| 923 | Rhoads Brothers Oil & Gas Inc | Tulsa, OK 74136 | Oil & Gas Operator | May 1996 |
| 924 | Rhoads Mark Operations | Ponca City, OK 74604 | Oil & Gas Operator | May 2006 |
| 925 | Rhoads Oil, LLC | | Oil Operator | Jan 2024 |
| 926 | Rhoads, Mark | Seminole, OK 74868 | Oil Operator | Sep 1999 |
| 927 | Rhoden Investment Co. | | Oil Operator | Dec 1987 |
| 928 | Rhodes Disposal, Inc. | Bryson, TX 76427 | Oil Operator | Apr 2024 |
| 929 | Rhodes Drilling Company | Abilene, TX 79608 | Oil & Gas Operator | Sep 2000 |
| 930 | Rhodes Well Service | | Oil Operator | Dec 2023 |
| 931 | Rhodes-Fielding Corporation | Edmond, OK 73083-6634 | Oil & Gas Operator | Sep 2023 |
| 932 | Rhombus Operating Co., LTD | Littleton, CO 80160 | Oil & Gas Operator | Apr 2024 |
| 933 | Rhonda Operating Company | Midland, TX 79710 | Oil & Gas Operator | Aug 2017 |
| 934 | RHR Oil & Gas, LLC | Fort Worth, TX 76107 | Oil Operator | Apr 2024 |
| 935 | Rhyne, J.V. | Cisco, TX 76437 | Oil & Gas Operator | Apr 2024 |
| 936 | Ria Mia Corporation | San Antonio, TX 78230 | Oil & Gas Operator | Apr 2011 |
| 937 | Rialto Oil & Gas Corporation | Houston, TX 77098 | Oil & Gas Operator | Oct 2012 |
| 938 | Riata Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 2008 |
| 939 | Ric Petroleum, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2003 |
| 940 | Rice Drilling B LLC | Canonsburg, PA 15317-5851 | Gas Operator | Jan 2024 |
| 941 | Rice Drilling Company | Santa Anna, TX 76878 | Oil & Gas Operator | Apr 2024 |
| 942 | Rice Drilling D LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Dec 2023 |
| 943 | Rice Engineering | | Oil & Gas Operator | Jul 1988 |
| 944 | Rice Engineering Corporation | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 945 | Rice Michael Lee | Beggs, OK 74421-2977 | Oil Operator | May 2023 |
| 946 | Rice Oil Co | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2020 |
| 947 | Rice Patricia Dba Rice Oil | Duncan, OK 73533-1888 | Oil Operator | Jan 2021 |
| 948 | Rice Production Company | | Oil Operator | Dec 2019 |
| 949 | Rice, James D. | Santa Anna, TX 76878 | Oil & Gas Operator | Sep 2007 |
| 950 | Riceland Petroleum Company | | Oil & Gas Operator | Dec 2023 |
| 951 | Rich, Joe | | Oil Operator | Dec 2019 |
| 952 | Richard A. Williams Expl Corp. | | Oil & Gas Operator | Dec 1983 |
| 953 | Richard B Herzog | Bradford, PA 16701-3619 | Oil Operator | Dec 2007 |
| 954 | Richard B. Nelson,Etal | | Oil & Gas Operator | May 1979 |
| 955 | Richard C Sullins Credit Shelter Trust | Perry, OK 73077-3201 | Gas Operator | Dec 2023 |
| 956 | Richard C. Bellows Family Trust | George West, TX 78022 | Oil Operator | Apr 2024 |
| 957 | Richard C. Hinds | | Oil Operator | Jan 2024 |
| 958 | Richard Charles J | | Oil & Gas Operator | May 1996 |
| 959 | Richard Engineer | | Oil Operator | Mar 1991 |
| 960 | Richard G Boarts | Ford City, PA 16226-7001 | Gas Operator | Dec 2012 |
| 961 | Richard H Burkland | Lemont Furnace, PA 15456-0073 | Oil & Gas Operator | Dec 2012 |
| 962 | Richard H. Lee, L.L.C. | | Oil & Gas Operator | Sep 1999 |
| 963 | Richard Nelson | | Oil Operator | Feb 1987 |
| 964 | Richard Oil Comp | | Oil Operator | Mar 1992 |
| 965 | Richard P. Kelter | | Oil & Gas Operator | Dec 1996 |
| 966 | Richard T. Perry | | Gas Operator | May 1993 |
| 967 | Richard W Thompson Inc | Plano, TX 75026 | Oil & Gas Operator | Jul 2019 |
| 968 | Richard Young & Associates | | Oil & Gas Operator | Dec 2004 |
| 969 | Richard'S Texas Tea | Rockdale, TX 76567 | Oil Operator | Apr 2024 |
| 970 | Richards Drilling Co | Venango, PA 16440-1123 | Oil & Gas Operator | Dec 2015 |
| 971 | Richards' Operating Company | Amarillo, TX 79120 | Oil & Gas Operator | Aug 2003 |
| 972 | Richards, Michael Dewain | Graham, TX 76450 | Oil & Gas Operator | Apr 2011 |
| 973 | Richards, Tot Dozer, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | May 2013 |
| 974 | Richards, Tot Oil Co. | Abilene, TX 79601 | Oil & Gas Operator | Apr 2024 |
| 975 | Richardson And Son , Inc. | Winfield, KS 67156 | Oil Operator | Dec 2023 |
| 976 | Richardson Developments | | Oil Operator | Sep 2023 |
| 977 | Richardson Energy Corporation | | Oil & Gas Operator | Dec 1987 |
| 978 | Richardson J Mar | | Oil & Gas Operator | Apr 1995 |
| 979 | Richardson Lloyd | | Oil & Gas Operator | Oct 2014 |
| 980 | Richardson Oil | | Oil & Gas Operator | Dec 2019 |
| 981 | Richardson Oil Company | San Antonio, TX 78216 | Oil & Gas Operator | Aug 2003 |
| 982 | Richardson Oil Operating | | Oil & Gas Operator | Dec 2009 |
| 983 | Richardson Operating Company | Denver, CO 80237 | Oil & Gas Operator | Jan 2024 |
| 984 | Richardson Resources Inc | Brownwood, TX 76801 | Oil & Gas Operator | Apr 2024 |
| 985 | Richardson WM S | Duncan, OK 73533 | Oil Operator | Jun 2013 |
| 986 | Richardson, Bud II | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 987 | Richardson, Marshall T. | Midfield, TX 77458 | Oil & Gas Operator | Apr 2024 |
| 988 | Richart Oil Company Inc | Oklahoma City, OK 73154-0631 | Oil & Gas Operator | Aug 1995 |
| 989 | Richey Heartsill | | Oil Operator | Feb 1991 |
| 990 | Richey Operating, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Apr 2024 |
| 991 | Richey Properties, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Apr 2024 |
| 992 | Richey, Ray Management Co., Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Apr 2024 |
| 993 | Richlan Drilling | | Oil Operator | Dec 1994 |
| 994 | Richlan Drilling, A General Partnership | Beaver, KS 67525 | Oil & Gas Operator | Dec 2023 |
| 995 | Richland Energy Corporation | Tulsa, OK 74103-4441 | Oil Operator | Jul 1995 |
| 996 | Richland Energy, Inc. | Irving, TX 75063 | Oil & Gas Operator | Apr 2024 |
| 997 | Richland Oil Investments, LLC | Palco, KS 67657 | Oil Operator | Dec 2023 |
| 998 | Richland Resources Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2024 |
| 999 | Richland Resources, Inc. | | Oil & Gas Operator | Aug 1990 |
| 1000 | Richman Petroleum Corp. | Grapevine, TX 76051 | Oil & Gas Operator | Jul 2006 |