| 22201 | Petro-Management Inc | | Oil Operator | Dec 1998 |
| 22202 | Petro-Mark, Inc. | St Petersburg, FL 33701 | Oil & Gas Operator | Dec 2021 |
| 22203 | Petro-Met Energy LLC | Edmond, OK 73034-1237 | Oil Operator | Sep 2024 |
| 22204 | Petro-Raider LLC | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 22205 | Petro-Smith Operating LLC | Houston, TX 77005 | Oil & Gas Operator | Nov 2024 |
| 22206 | Petro-Technology | | Oil & Gas Operator | Aug 1991 |
| 22207 | Petro-Tex Energy & Expl.Co.,Inc. | Llano, TX 78643 | Oil & Gas Operator | Nov 2024 |
| 22208 | Petro-Ventures, Inc. - Miss. | | Oil & Gas Operator | Apr 2009 |
| 22209 | Petro-West Corporation | Lubbock, TX 79404 | Oil & Gas Operator | Oct 2001 |
| 22210 | Petro-X Corporation | Houston, TX 77092 | Oil & Gas Operator | Jul 2002 |
| 22211 | Petrobal Omega 1, LLC | Little Elm, TX 75068 | Oil & Gas Operator | Nov 2024 |
| 22212 | Petrobank Opr Co | Denver, CO 80202-4675 | Gas Operator | Dec 1992 |
| 22213 | Petrocan, Inc. | | Oil & Gas Operator | Apr 1998 |
| 22214 | Petrocana,Inc. | | Oil & Gas Operator | Aug 1993 |
| 22215 | Petrocarbon Energy Corporation | | Oil Operator | Sep 1996 |
| 22216 | Petrocarbon Energy Trust | | Oil Operator | Sep 1996 |
| 22217 | Petrocat Innovations, LLC | Forney, TX 75126 | Oil Operator | Nov 2024 |
| 22218 | Petroco Inc | | Oil & Gas Operator | Nov 1996 |
| 22219 | Petrocoastal, Inc. | Frisco, TX 75036 | Oil & Gas Operator | Nov 2024 |
| 22220 | Petrocon Inc | Delaware, OH 43015-7147-7147 | Oil & Gas Operator | Dec 2010 |
| 22221 | Petrocorp | | Oil & Gas Operator | Oct 1992 |
| 22222 | Petrocorp Acquisition Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2002 |
| 22223 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 22224 | Petrocorp Incorporated,A TX.Corp | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2005 |
| 22225 | Petroda Oil & Gas LLC | Edmond, OK 73054 | Oil & Gas Operator | Feb 2023 |
| 22226 | Petrodata Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 22227 | Petrodome Operating, LLC | Houston, TX 77265 | Oil & Gas Operator | Jul 2024 |
| 22228 | Petrodril Inc | Farmington, NM 87401 | Oil & Gas Operator | Jan 1987 |
| 22229 | Petrodudes | Crescent, OK 73028-8706 | Oil & Gas Operator | Aug 2024 |
| 22230 | Petroel | Marietta, OH 45750 | Oil & Gas Operator | Dec 2000 |
| 22231 | Petroflow Energy Corporation | Tulsa, OK 74119-5405 | Oil & Gas Operator | Oct 2016 |
| 22232 | Petrofunds, Inc & Sunny South | | Oil & Gas Operator | Feb 1984 |
| 22233 | Petrofunds, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 1996 |
| 22234 | Petrofunds, Inc. & Herd | | Oil & Gas Operator | Mar 1984 |
| 22235 | Petrogas Energy Services, LLC | Dallas, TX 75214 | Oil Operator | Nov 2024 |
| 22236 | Petrogas Exploration Inc | | Oil Operator | Sep 2024 |
| 22237 | Petrogas Operating Corporation | Garland, TX 75043 | Oil Operator | Feb 2010 |
| 22238 | Petroglen Company, Inc. | | Oil & Gas Operator | Jul 1990 |
| 22239 | Petroglyph Operating Co | Boise, ID 83709 | Oil & Gas Operator | Jul 2017 |
| 22240 | Petrogulf Corporation | Denver, CO 80202 | Oil & Gas Operator | Nov 2024 |
| 22241 | Petrohawk Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Jun 2005 |
| 22242 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 22243 | Petrol Industries, Inc. | Shreveport, LA 71137 | Oil & Gas Operator | Jun 2012 |
| 22244 | Petrol Oil & Gas, Inc. | Overland Park, KS 66210 | Oil & Gas Operator | Dec 2008 |
| 22245 | Petrolanic Inc | Tulsa, OK 74105 | Oil Operator | Oct 1991 |
| 22246 | Petrolegacy Energy II, LLC | Denver, CO 80202 | Oil & Gas Operator | Nov 2024 |
| 22247 | Petrolera Oil & Gas LLC | Oklahoma City, OK 73157 | Oil Operator | Aug 2024 |
| 22248 | Petrolero Corp. | San Antonio, TX 78205 | Oil & Gas Operator | Feb 1998 |
| 22249 | Petrolero, LLC | Plano, TX 75026 | Oil & Gas Operator | Nov 2024 |
| 22250 | Petroleum Advisors Int'L., Inc. | Houston, TX 77224 | Gas Operator | Jun 2005 |
| 22251 | Petroleum Capital, L.C. | Dallas, TX 75367 | Oil & Gas Operator | Nov 2024 |
| 22252 | Petroleum Corp Of Delaware The | | Oil & Gas Operator | May 1991 |
| 22253 | Petroleum Corpor | | Oil Operator | Jan 1983 |
| 22254 | Petroleum Corporation Of Texas | Breckenridge, TX 76024 | Oil & Gas Operator | May 2002 |
| 22255 | Petroleum Develo | | Oil Operator | Sep 1986 |
| 22256 | Petroleum Development Company | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2024 |
| 22257 | Petroleum Development Cor | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2004 |
| 22258 | Petroleum Development Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
| 22259 | Petroleum Development LLC | | Oil Operator | Jul 2018 |
| 22260 | Petroleum Energy | | Oil & Gas Operator | Mar 1991 |
| 22261 | Petroleum Energy Corp | | Oil & Gas Operator | Aug 2012 |
| 22262 | Petroleum Energy, Inc. | Wichita, KS 67202 | Oil Operator | May 1999 |
| 22263 | Petroleum Engineering & Management Corp. | Casper, WY 82609 | Oil & Gas Operator | Jul 2018 |
| 22264 | Petroleum Engineers, Inc. | | Oil & Gas Operator | Jun 1983 |
| 22265 | Petroleum Enterp | | Oil & Gas Operator | Sep 1995 |
| 22266 | Petroleum Enterprises, Inc. | Hutchinson, KS 67504 | Oil & Gas Operator | May 2001 |
| 22267 | Petroleum Exchange | | Oil & Gas Operator | Oct 1997 |
| 22268 | Petroleum Explo Prod Inc | Oilton, OK 74052 | Oil & Gas Operator | Jan 2017 |
| 22269 | Petroleum Explor | | Oil Operator | Aug 1983 |
| 22270 | Petroleum Exploration Company LTD LP | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2024 |
| 22271 | Petroleum Exploration Company LTD., Limited P | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2024 |
| 22272 | Petroleum Futures-Chapman Oil | | Oil & Gas Operator | Jul 1981 |
| 22273 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 22274 | Petroleum Incorp | | Oil & Gas Operator | Apr 1993 |
| 22275 | Petroleum International, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2000 |
| 22276 | Petroleum Investment Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Nov 1998 |
| 22277 | Petroleum Investments, Inc | Shreveport, LA 71101 | Oil & Gas Operator | Dec 1977 |
| 22278 | Petroleum Land Company | Abilene, TX 79606 | Oil & Gas Operator | May 2000 |
| 22279 | Petroleum Manage | | Oil & Gas Operator | Oct 1994 |
| 22280 | Petroleum Management Int'L, Inc. | Sugar Land, TX 77487 | Oil & Gas Operator | Oct 1993 |
| 22281 | Petroleum Management LLC | Platteville, CO 80651 | Oil & Gas Operator | May 2011 |
| 22282 | Petroleum Management Prof Inc | Oklahoma City, OK 73120-1848 | Oil & Gas Operator | Apr 2009 |
| 22283 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Nov 2024 |
| 22284 | Petroleum Prod. MGMT | | Oil Operator | Nov 1995 |
| 22285 | Petroleum Produc | | Oil & Gas Operator | Dec 1996 |
| 22286 | Petroleum Production Corporation | Rantoul, KS 66079 | Oil Operator | Feb 2024 |
| 22287 | Petroleum Production Engineering | Fulton, TX 78358 | Oil Operator | Feb 2019 |
| 22288 | Petroleum Production Management, Inc. | Shawnee Mission, KS 66202 | Oil & Gas Operator | Nov 2021 |
| 22289 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | Nov 2024 |
| 22290 | Petroleum Products Inc | | Oil Operator | Jun 1996 |
| 22291 | Petroleum Proper | | Oil & Gas Operator | Nov 1995 |
| 22292 | Petroleum Properties Co Inc | Tulsa, OK 74132-4010 | Oil & Gas Operator | Sep 2012 |
| 22293 | Petroleum Properties MGMT Co LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2005 |
| 22294 | Petroleum Properties MGMT Corp | | Oil & Gas Operator | Aug 1990 |
| 22295 | Petroleum Properties MGMT. Co. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2014 |
| 22296 | Petroleum Property MGMT, Inc (A) | Fort Worth, TX 76101 | Oil & Gas Operator | May 1994 |
| 22297 | Petroleum Property Services, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jul 2024 |
| 22298 | Petroleum Recovery & Expl Inc. | | Oil Operator | Oct 1984 |
| 22299 | Petroleum Recovery Systems, L.C. | Houston, TX 77024 | Oil Operator | Nov 2024 |
| 22300 | Petroleum Reserve Corporation | Plymouth MTNG, PA 19462 | Oil & Gas Operator | May 2008 |