| 19201 | Monroe Well Service-East End | | Oil Operator | Dec 1988 |
| 19202 | Monroe Well Service-Empire | | Oil Operator | Dec 1988 |
| 19203 | Monroe Well Service-Energy | | Oil Operator | Dec 1988 |
| 19204 | Monroe Well Service-Energy 84 | | Oil Operator | Aug 1989 |
| 19205 | Monroe Well Service-Ged | | Oil Operator | Dec 1988 |
| 19206 | Monroe Well Service-Gotham | | Oil Operator | Apr 1992 |
| 19207 | Monroe Well Service-Gramercy | | Oil Operator | May 1992 |
| 19208 | Monroe Well Service-HGC | | Oil Operator | Dec 1988 |
| 19209 | Monroe Well Service-Lebo | | Oil Operator | Jun 1989 |
| 19210 | Monroe Well Service-Lexington | | Oil Operator | Feb 1989 |
| 19211 | Monroe Well Service-Newtown | | Oil Operator | Aug 1990 |
| 19212 | Monroe Well Service-Ocean | | Oil Operator | Feb 1989 |
| 19213 | Monroe Well Service-Oceanyacht | | Oil Operator | Jan 1989 |
| 19214 | Monroe Well Service-Oil City | | Oil Operator | Aug 1992 |
| 19215 | Monroe Well Service-Omega | | Oil Operator | Aug 1992 |
| 19216 | Monroe Well Service-Par | | Oil Operator | Jan 1990 |
| 19217 | Monroe Well Service-Petrol | | Oil Operator | Sep 1992 |
| 19218 | Monroe Well Service-Petrovest | | Oil Operator | Dec 1988 |
| 19219 | Monroe Well Service-PRG | | Oil Operator | Nov 1990 |
| 19220 | Monroe Well Service-Redstone | | Oil Operator | Jul 1989 |
| 19221 | Monroe Well Service-RVS | | Oil Operator | Dec 1990 |
| 19222 | Monroe Well Service-Shemen | | Oil Operator | Dec 1988 |
| 19223 | Monroe Well Service-Shemen1984 | | Oil Operator | Jan 1989 |
| 19224 | Monroe Well Service-Shemen1985 | | Oil Operator | Nov 1990 |
| 19225 | Monroe Well Service-Sla | | Oil Operator | Mar 1989 |
| 19226 | Monroe Well Service-SPD | | Oil Operator | Dec 1988 |
| 19227 | Monroe Well Service-SPD 1985 | | Oil Operator | Dec 1988 |
| 19228 | Monroe Well Service-TBR | | Oil Operator | Aug 1991 |
| 19229 | Monroe Well Service-TG I | | Oil Operator | Oct 1990 |
| 19230 | Monroe Well Service-TG II | | Oil Operator | Oct 1990 |
| 19231 | Monroe Well Service-TG III | | Oil Operator | Jul 1992 |
| 19232 | Monroe Well Service-TG VI | | Oil Operator | Aug 1989 |
| 19233 | Monroe Well Service-Tpa 1985 | | Oil Operator | Dec 1990 |
| 19234 | Monroe Well Service-Vista | | Oil Operator | Nov 1990 |
| 19235 | Monroe Well Service-West End | | Oil Operator | Dec 1988 |
| 19236 | Monroe Well Service-York | | Oil Operator | Dec 1988 |
| 19237 | Monroe, Cameron | Westfield, NY 14787 | Gas Operator | Dec 2025 |
| 19238 | Monsanto | Englewood, CO 80111 | Oil & Gas Operator | Apr 1986 |
| 19239 | Monsanto Company | Indianapolis, IN 46280 | Oil & Gas Operator | Jan 2005 |
| 19240 | Monsanto Oil Com | | Oil Operator | Nov 1996 |
| 19241 | Monsanto Oil Company | | Oil & Gas Operator | Apr 1986 |
| 19242 | Montalban Oil & Gas Operations, Inc. | Cut Bank, MT 59427 | Oil & Gas Operator | Jun 2026 |
| 19243 | Montana Energy Company, LLC | McAllen, TX 78504 | Oil & Gas Operator | Jan 2026 |
| 19244 | Montana Heartland LLC | Bismarck, ND 58504 | Oil & Gas Operator | Jun 2026 |
| 19245 | Montana Land & Exploration, Inc. | Calgary, AB T2P 3E7 | Oil & Gas Operator | Apr 2019 |
| 19246 | Montana Land & Mineral Co. | Billings, MT 59105 | Gas Operator | Mar 2026 |
| 19247 | Montana Oil Field Acquisition I, LLC | Rutherford, NJ 07070 | Oil Operator | Jun 2016 |
| 19248 | Montana Power Company | Butte, MT 59701 | Oil & Gas Operator | Apr 2002 |
| 19249 | Montana Power Gas Company | | Oil & Gas Operator | Apr 2002 |
| 19250 | Montare Operating, LTD. | Flower Mound, TX 75022 | Oil & Gas Operator | Sep 2026 |
| 19251 | Montclair Energy LLC | Edmond, OK 73034-7291 | Oil & Gas Operator | Jan 2026 |
| 19252 | Montclair Production Company | Austin, TX 78755 | Oil & Gas Operator | Sep 2026 |
| 19253 | Montco Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 1999 |
| 19254 | Monte Grande Exploration, Inc. | Cut Bank, MT 59427 | Oil Operator | Oct 2000 |
| 19255 | Montego Resources Inc | Oklahoma City, OK 73172-0192 | Oil & Gas Operator | Mar 2015 |
| 19256 | Monterey Pipeline Co. | | Oil Operator | Aug 1993 |
| 19257 | Monterey Production Company LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2026 |
| 19258 | Monterey Resources Inc. | | Oil & Gas Operator | Dec 1997 |
| 19259 | Monterey Resources LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Oct 2019 |
| 19260 | Montex Drilling Company LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2026 |
| 19261 | Montex Exploration | Sugarland, TX 77478 | Oil Operator | Apr 2003 |
| 19262 | Montex Exploration Company | Houston, TX 77057 | Oil & Gas Operator | Mar 2011 |
| 19263 | Montgomery Count | | Oil Operator | Dec 1992 |
| 19264 | Montgomery Exploration Co LTD | Dallas, TX 75204-2634 | Oil & Gas Operator | Jun 2026 |
| 19265 | Montgomery Jake E | Henryetta, OK 74437 | Oil & Gas Operator | May 2026 |
| 19266 | Montgomery Oil & Gas Expl Inc | Tulsa, OK 74170-1884 | Oil & Gas Operator | Mar 2005 |
| 19267 | Montgomery Oil Co | | Oil Operator | Dec 2018 |
| 19268 | Montgomery Petroleum, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2007 |
| 19269 | Montgomery Production & Operating LLC | Herington, KS 67449 | Oil & Gas Operator | Apr 2026 |
| 19270 | Montgomery Royalty | Moran, TX 76464 | Oil & Gas Operator | Sep 2026 |
| 19271 | Montrose Operating LLC | Broken Arrow, OK 74012 | Oil & Gas Operator | Sep 2026 |
| 19272 | Monty L Hott Production Corporation | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2026 |
| 19273 | Monument Gas Marketing Inc | | Oil & Gas Operator | Oct 2025 |
| 19274 | Monument Global Resources Inc | Dallas, TX 75243 | Oil & Gas Operator | Jan 2025 |
| 19275 | Monument Production Inc. | | Oil & Gas Operator | Dec 2011 |
| 19276 | Monument Resources, Inc. | Castle Rock, CO 80104 | Oil & Gas Operator | Jun 2012 |
| 19277 | Moody Energy Co. | Canadian, TX 79014 | Oil & Gas Operator | Dec 2004 |
| 19278 | Moody Oil & Gas Co. | Bridgeport, WV 263301051 | Oil & Gas Operator | Dec 2004 |
| 19279 | Moody Oil Co. | Pearsall, TX 78061 | Oil & Gas Operator | Sep 2026 |
| 19280 | Moody Oil LLC | Henderson, KY 42420 | Oil Operator | Dec 2024 |
| 19281 | Moog Incorporated | Elma, NY 14059 | Gas Operator | Dec 2025 |
| 19282 | Moon Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Mar 2003 |
| 19283 | Moon-Hines-Tigrett Operating Co., Inc. | | Oil & Gas Operator | Jan 2026 |
| 19284 | Moon-Hines-Tigrett Opr Co Inc | | Oil & Gas Operator | Oct 1995 |
| 19285 | Moonlite Oil & Gas Company | Imperial, TX 79743 | Oil & Gas Operator | Sep 2026 |
| 19286 | Moonshine Resources, LLC | Midland, TX 79707 | Oil & Gas Operator | Sep 2026 |
| 19287 | Moontower Resources Op, LLC | Austin, TX 78732 | Oil & Gas Operator | Apr 2025 |
| 19288 | Moore & Associates | Denver, CO 80202 | Oil & Gas Operator | Dec 1993 |
| 19289 | Moore & Gilmore | Midland, TX 79701 | Oil & Gas Operator | Oct 2008 |
| 19290 | Moore & Moore Energy Inc | Purcell, OK 73080-0674 | Oil & Gas Operator | Dec 2012 |
| 19291 | Moore Clay | Bradenton, FL 34211 | Oil & Gas Operator | May 2026 |
| 19292 | Moore County Gas Partners, L.P. | Borger, TX 79007 | Gas Operator | Sep 2026 |
| 19293 | Moore David K | Duncan, OK 73575 | Oil & Gas Operator | Oct 2009 |
| 19294 | Moore Don | Elmore City, OK 73433 | Oil & Gas Operator | May 2026 |
| 19295 | Moore DRLG LLC | MT Vernon, OH 43050 | Oil Operator | Dec 2025 |
| 19296 | Moore Energy Services, LLC | Iowa Park, TX 76367 | Oil Operator | Mar 2024 |
| 19297 | Moore Gas And Oil | Monahans, TX 79756 | Oil Operator | Sep 2026 |
| 19298 | Moore Investment Co. | Abilene, TX 79604 | Oil & Gas Operator | Sep 2026 |
| 19299 | Moore Investments LC | Oklahoma City, OK 73116-9044 | Oil & Gas Operator | Feb 2023 |
| 19300 | Moore Lynn D | Collinsville, OK 74021 | Oil Operator | Aug 2013 |