| 1101 | Hillcrest Petroleum, LLC | Midland, TX 79707 | Oil & Gas Operator | Jun 2019 |
| 1102 | Hillenburg Oil C | | Oil Operator | Apr 1994 |
| 1103 | Hillenburg Oil Co., A General Partnership | Broken Arrow, OK 74011 | Oil Operator | Sep 2025 |
| 1104 | Hillenburg Oil Company | Broken Arrow, OK 74011-4021 | Oil Operator | Apr 2011 |
| 1105 | Hilliard Oil | Bronte, TX 76933 | Oil & Gas Operator | Mar 2008 |
| 1106 | Hilliard Oil & Gas, Inc. | New Orleans, LA 70112 | Oil & Gas Operator | May 2001 |
| 1107 | Hilliard Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2009 |
| 1108 | Hilliker Oil Com | | Oil Operator | Jul 1984 |
| 1109 | Hilliker Production | Indian Wells, CA 92210 | Oil & Gas Operator | Jul 2007 |
| 1110 | Hillin Prod. Co. | Odessa, TX 79760 | Oil & Gas Operator | Apr 2002 |
| 1111 | Hillin Simon/Prime Expl., L.C. | Midland, TX 79702 | Oil & Gas Operator | Jun 2000 |
| 1112 | Hillin, T. A. | Kerrville, TX 78028 | Oil & Gas Operator | Aug 2020 |
| 1113 | Hillin-Simon Oil Company | Houston, TX 77079 | Oil & Gas Operator | Mar 2013 |
| 1114 | Hills Dozer Service | Stroud, OK 74079 | Oil & Gas Operator | Mar 2022 |
| 1115 | Hillside Oil & Gas, LLC | Midland, TX 79708 | Oil & Gas Operator | Apr 2016 |
| 1116 | Hillside Oil Inc | Aurora, ON L4G | Oil Operator | Dec 2021 |
| 1117 | Hillside Oil Partners | | Oil & Gas Operator | Dec 1999 |
| 1118 | Hillside Resources | Bartlesville, OK 74005 | Oil & Gas Operator | Jan 2007 |
| 1119 | Hilltex Operating Company, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2025 |
| 1120 | Hilltop Development Corp | Frazeysburg, OH 43822 | Oil & Gas Operator | Dec 1984 |
| 1121 | Hilltop Disposal LLC | Elk City, OK 73644-2400 | Oil Operator | Jun 2021 |
| 1122 | Hilltop Exploration, Inc. | Sedan, KS 67361 | Oil Operator | Jan 2000 |
| 1123 | Hilltop Petroleum LLC | Weatherford, TX 76086 | Oil & Gas Operator | Dec 2025 |
| 1124 | Hilltopper Energy, LLC | Hopkinsville, KY 42240 | Oil & Gas Operator | Dec 2023 |
| 1125 | Hillwood O & G Operating Co LP | Fort Worth, TX 76102 | Gas Operator | Dec 2025 |
| 1126 | Hilty Interests, Inc. | Kerrville, TX 78028 | Oil & Gas Operator | Jun 1989 |
| 1127 | Himco Oil & Gas Inc | Enid, OK 73702 | Oil & Gas Operator | Oct 2025 |
| 1128 | Hindman, E. C. Jr. Partnership | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2008 |
| 1129 | Hinds Petroleum, LLC | Houston, TX 77263 | Oil Operator | Dec 2025 |
| 1130 | Hinds Petroleum, LP | Houston, TX 77263 | Oil Operator | Feb 2017 |
| 1131 | Hines Oil & Gas LLC | Elk City, OK 73644-9373 | Gas Operator | Aug 2021 |
| 1132 | Hines, Ralph, Jr. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2002 |
| 1133 | Hinkle Engineering, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2016 |
| 1134 | Hinkle Oil And Gas Inc | Oklahoma City, OK 73112-4275 | Oil & Gas Operator | Nov 2025 |
| 1135 | Hinkle Oil Compa | | Oil & Gas Operator | Nov 1994 |
| 1136 | Hinkle Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Jan 1999 |
| 1137 | Hinkle, Howard L. | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 2025 |
| 1138 | Hinks Petroleum Co., Inc. | Wichita, KS 67201 | Oil Operator | May 1999 |
| 1139 | Hinson Bobbie L | Bristow, OK 74010 | Oil & Gas Operator | Sep 2025 |
| 1140 | Hinson Jr Bobbie L | Bristow, OK 74010 | Oil & Gas Operator | Jul 2020 |
| 1141 | Hinto Energy, LLC | Edwards, CO 81632 | Oil Operator | Mar 2017 |
| 1142 | Hinton Production Company | MT Pleasant, TX 75455 | Oil & Gas Operator | Aug 1995 |
| 1143 | Hinton Well Servicing, Inc. | | Oil Operator | Feb 2008 |
| 1144 | Hinton, W. B. | MT Pleasant, TX 75455 | Oil & Gas Operator | Jul 1993 |
| 1145 | Hipp Oil And Gas Inc. | Big Spring, TX 79720 | Oil & Gas Operator | Dec 2025 |
| 1146 | Hirt Farms Incor | | Oil & Gas Operator | Apr 1994 |
| 1147 | His Energy Corporation Inc | Newcastle, OK 73065-1461 | Oil Operator | Feb 2018 |
| 1148 | Hispanic Oil & Gas Energy, LLC | Houston, TX 77056 | Oil Operator | Oct 2025 |
| 1149 | Hitchcock, VIcki L. & Jacob J. | Randolph, NY 14772 | Gas Operator | Dec 2024 |
| 1150 | Hitchita #1 LP | Edmond, OK 73013-6628 | Oil & Gas Operator | Sep 1997 |
| 1151 | Hitex Resources, LP | Houston, TX 77265 | Oil & Gas Operator | Dec 2025 |
| 1152 | Hiwa Petroleum Corp. | | Oil & Gas Operator | Oct 2025 |
| 1153 | Hixon James E | | Oil Operator | Feb 2004 |
| 1154 | Hizey Service & | | Oil Operator | Apr 1994 |
| 1155 | HJ, Inc. | Garden City, KS 67846 | Oil & Gas Operator | Sep 2025 |
| 1156 | HK Energy Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2023 |
| 1157 | HKW Oil Company, Inc. | Bunker Hill, KS 67626 | Oil Operator | Dec 2009 |
| 1158 | HLH Drilling Inc | Andover, OH 44003 | Oil & Gas Operator | Dec 1985 |
| 1159 | HLH Realty Co | Drumright, OK 74030 | Oil & Gas Operator | Mar 2016 |
| 1160 | HMD Oil Co Inc | Ardmore, OK 73401-2542 | Oil & Gas Operator | Nov 2025 |
| 1161 | HMH Operators, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 1162 | HMN Partnership | Argonia, KS 67004 | Oil Operator | Nov 1993 |
| 1163 | HMT Genesis Petroleum Corp. | Fort Worth, TX 76116 | Oil & Gas Operator | Nov 2008 |
| 1164 | HMT Pipeline Company, Inc. | San Angelo, TX 76904 | Oil & Gas Operator | Dec 2025 |
| 1165 | HMX Investments, Inc. | Katy, TX 77494 | Oil & Gas Operator | Oct 2025 |
| 1166 | HNG Oil Company | | Oil & Gas Operator | Jun 1987 |
| 1167 | HNG Storage Company | Houston, TX 77042 | Oil & Gas Operator | Mar 2002 |
| 1168 | Hoag Memorial Hospital Presbyterian | | Gas Operator | Nov 2025 |
| 1169 | Hoard John L Family Trust | Ardmore, OK 73402-1706 | Oil & Gas Operator | Jun 2022 |
| 1170 | Hobbs Energy Corporation | San Angelo, TX 76904 | Oil & Gas Operator | Mar 2008 |
| 1171 | Hobbs Oil Co. | | Oil Operator | Dec 1999 |
| 1172 | Hobbs Production LLC | | Oil Operator | Mar 2023 |
| 1173 | Hobbs, Columbus Agent | | Oil & Gas Operator | Dec 2018 |
| 1174 | Hobbs, Donald M. | Edinboro, PA 16412 | Gas Operator | Dec 2024 |
| 1175 | Hobo Oil & Gas | | Oil & Gas Operator | Aug 2013 |
| 1176 | Hobson Petroleum Corp | | Oil & Gas Operator | Sep 1991 |
| 1177 | Hoc Ca LLC | | Oil & Gas Operator | Dec 2025 |
| 1178 | Hoc Operating Co., Inc. | Houston, TX 77056 | Oil & Gas Operator | Nov 1999 |
| 1179 | Hochendel Consultants | | Oil & Gas Operator | Jul 1995 |
| 1180 | Hocking Hills Energy And Well Service LLC | Logan, OH 43138-8497 | Oil & Gas Operator | Dec 2024 |
| 1181 | Hocking Technical College | Nelsonville, OH 45764 | Oil & Gas Operator | Dec 2024 |
| 1182 | Hockran, Thomas A. | Bemus Point, NY 14712 | Gas Operator | Dec 2024 |
| 1183 | Hoco Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 1184 | Hodgden Operating Co., Inc. | Enid, OK 73702 | Oil & Gas Operator | Nov 2025 |
| 1185 | Hodgden, Jack D. | Enid, OK 73702 | Oil & Gas Operator | Apr 2000 |
| 1186 | Hodge T F | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2007 |
| 1187 | Hodge, T.F. & Morrow Oil & Gas Co. | | Oil & Gas Operator | Sep 1993 |
| 1188 | Hodges & Hodges Oil Venture | Gallup, NM 87301 | Oil Operator | May 1999 |
| 1189 | Hodges & Hodges Productions | Anson, TX 79501 | Oil & Gas Operator | Aug 2003 |
| 1190 | Hodges & Rister | Abilene, TX 79603 | Oil & Gas Operator | Apr 2016 |
| 1191 | Hodges Oil | | Oil Operator | Sep 2025 |
| 1192 | Hodges, Dennis D. And Peggy D. | Reading, KS 66868 | Oil Operator | Sep 2025 |
| 1193 | Hodges, James Aaron | Fort Worth, TX 76179 | Oil & Gas Operator | Dec 2025 |
| 1194 | Hodges, Thomas | Alvord, TX 76225 | Oil & Gas Operator | Oct 2002 |
| 1195 | Hodges, Tommie Ann | Alvord, TX 76225 | Oil & Gas Operator | Jun 2018 |
| 1196 | Hoefle Oil Company | | Gas Operator | Dec 2011 |
| 1197 | Hoehn French | Enid, OK 73701-5600 | Oil & Gas Operator | Oct 1996 |
| 1198 | Hoehn Oil | Wellsville, KS 66092 | Oil Operator | Oct 1998 |
| 1199 | Hoehn Oil LLC | Wellsville, KS 66092 | Oil Operator | Sep 2025 |
| 1200 | Hoell Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |