| 201 | Kinder & Petty | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 202 | Kinder Morgan Co2 Company, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 203 | Kinder Morgan Production Co LLC | Midland, TX 79705 | Oil & Gas Operator | Sep 2025 |
| 204 | Kinder Morgan Production Co LP | Midland, TX 79701 | Oil & Gas Operator | Jul 2007 |
| 205 | Kinder Morgan Sacroc LP | Snyder, TX 79549 | Oil & Gas Operator | Dec 2003 |
| 206 | Kinder Morgan Tejas Pipeline LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2025 |
| 207 | Kindred Petroleum Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 208 | King & West | Wichita Falls, TX 76307 | Oil & Gas Operator | May 1994 |
| 209 | King Energy Resources | Kerrville, TX 78029 | Oil & Gas Operator | Sep 2025 |
| 210 | King Oil & Gas Co. | Cisco, TX 76437 | Oil & Gas Operator | Sep 2025 |
| 211 | King Oil & Resources Co | Midland, TX 79705 | Oil & Gas Operator | Sep 2025 |
| 212 | King Operating Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Sep 2025 |
| 213 | King Ranch Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 1999 |
| 214 | King Ranch Oil & Gas, Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 1997 |
| 215 | King-Goen Oil, LLC | Abilene, TX 79602 | Oil Operator | Sep 2025 |
| 216 | Kingdom Resources Corporation | Austin, TX 78701 | Oil & Gas Operator | Sep 1993 |
| 217 | Kingery Drilling Co., Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Jun 2025 |
| 218 | Kingery, Johnny | Clyde, TX 79510 | Oil & Gas Operator | Oct 1997 |
| 219 | Kingfish Gathering LLC | Lago VIsta, TX 78645 | Oil & Gas Operator | Sep 2025 |
| 220 | Kingman Operating Company, Inc. | Austin, TX 78729 | Oil Operator | Jun 2013 |
| 221 | Kings CRK Land Oil & Cattle, LLC | Breckenridge, TX 76424 | Oil Operator | Sep 2025 |
| 222 | Kingwood Exploration LLC | Shreveport, LA 71105 | Oil & Gas Operator | Sep 2025 |
| 223 | Kingwood Oil Co; Inc | Luling, TX 78648 | Oil & Gas Operator | Nov 2015 |
| 224 | Kingwood Resources, Inc. | Kingwood, TX 77339 | Oil & Gas Operator | May 2022 |
| 225 | Kinlaw Oil Corporation | Dallas, TX 75380 | Oil & Gas Operator | Sep 2025 |
| 226 | Kinney Incorporated | Andrews, TX 79714 | Oil & Gas Operator | Sep 2025 |
| 227 | Kintex Petroleum Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2025 |
| 228 | Kirkpatrick Oil & Gas Co. | Pampa, TX 79066 | Oil & Gas Operator | Apr 1996 |
| 229 | Kirkpatrick Oil & Gas L.L.C. | Midland, TX 79701 | Oil & Gas Operator | Dec 2010 |
| 230 | Kirkpatrick Oil Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Sep 2025 |
| 231 | Kirkpatrick, John Oil LLC | Victoria, TX 77905 | Oil & Gas Operator | Sep 2025 |
| 232 | Kismet Properties, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Sep 2025 |
| 233 | Kiva Resources Inc. | Houston, TX 77265 | Oil & Gas Operator | Mar 2008 |
| 234 | KJ Energy, LLC | MT Enterprise, TX 75681 | Oil & Gas Operator | Jul 2024 |
| 235 | Klabzuba Brothers LLC | Prague, OK 74864-0567 | Oil & Gas Operator | Jul 2007 |
| 236 | Klabzuba Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2013 |
| 237 | Klabzuba Royalty Company | Prague, OK 74864-0567 | Oil & Gas Operator | Dec 2019 |
| 238 | Klaeger Operating Company II,LLC | Marble Falls, TX 78654 | Oil Operator | Sep 2025 |
| 239 | Klaeger Operating Company, LLC | Marble Falls, TX 78654 | Oil Operator | Sep 2025 |
| 240 | Klaeger, J. H. | Hondo, TX 78861 | Oil & Gas Operator | Dec 2009 |
| 241 | Klassen Energy, Inc. | Cisco, TX 76437 | Oil & Gas Operator | Sep 2025 |
| 242 | Klause & Klaus Oil Co. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2003 |
| 243 | Klein, J. L. | Henrietta, TX 76365 | Oil & Gas Operator | Sep 2013 |
| 244 | KLH Oil & Gas, Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Sep 2025 |
| 245 | Kling, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Dec 2000 |
| 246 | Klingberg, Roger | Cross Plains, TX 76443 | Oil & Gas Operator | Jan 2017 |
| 247 | KLM Petroleum Corp. | Midland, TX 79705 | Oil & Gas Operator | Sep 2025 |
| 248 | Klo Oil & Gas, L.L.C. | Tulsa, OK 74120 | Oil & Gas Operator | Jan 2023 |
| 249 | Klock, Ted | Corsicana, TX 75110 | Oil Operator | Jul 2022 |
| 250 | Klotzman, M. S. Exploration Co. | Victoria, TX 77903 | Oil & Gas Operator | Sep 2025 |
| 251 | Klutts, Carlos J. | Austin, TX 78711 | Oil & Gas Operator | Apr 2002 |
| 252 | KMK Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Sep 2025 |
| 253 | KND Oil & Gas, LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2023 |
| 254 | Kneupper Oil, LLC | MC Camey, TX 79752 | Oil & Gas Operator | Sep 2025 |
| 255 | KNG Producers | Dumas, TX 79029 | Oil & Gas Operator | Oct 2009 |
| 256 | Knickerbocker Land Resources | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2015 |
| 257 | Knight, Reuben B. | Windthorst, TX 76389 | Oil & Gas Operator | Sep 2025 |
| 258 | KNK Oil & Gas | Abilene, TX 79602 | Oil & Gas Operator | Dec 1996 |
| 259 | Knobloch, Albert | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 260 | Knox Industries, Inc. | Arlington, TX 76012 | Oil & Gas Operator | Sep 2025 |
| 261 | Knox, D. M., Oil Co. | Weatherford, TX 76086 | Oil & Gas Operator | Mar 2000 |
| 262 | Knox, H. A. | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 263 | Knox, Jack L. | Coleman, TX 76834 | Oil & Gas Operator | Sep 2025 |
| 264 | Ko Operating | Merkel, TX 79536 | Oil & Gas Operator | Sep 2025 |
| 265 | Ko Operating LLC | Austin, TX 78746 | Oil Operator | Sep 2025 |
| 266 | Kocana Resources | Ranchos Taos, NM 87557 | Oil & Gas Operator | Jul 1999 |
| 267 | Koch Exploration Company | Houston, TX 77046 | Oil & Gas Operator | Apr 2025 |
| 268 | Koch Exploration Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 269 | Koch Midstream Services Company | Wichita, KS 67201 | Oil & Gas Operator | Oct 2000 |
| 270 | Koch, P. S. | Seguin, TX 78155 | Oil & Gas Operator | May 2018 |
| 271 | Kodiak Drilling, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2003 |
| 272 | Kodiak Oil & Gas Inc | Muenster, TX 76252 | Oil & Gas Operator | Sep 2025 |
| 273 | Kodiak Operating, L.L.C. | Olney, TX 76374 | Oil & Gas Operator | Sep 2025 |
| 274 | Kodiak Petroleum Corp. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 1996 |
| 275 | Kodiak Petroleum, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Apr 2025 |
| 276 | Kodiak Productions LTD | Big Lake, TX 76932 | Oil & Gas Operator | Mar 2014 |
| 277 | Kody Petroleum Co., Inc. | Daisetta, TX 77533 | Oil & Gas Operator | Sep 2025 |
| 278 | Kohler Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 1994 |
| 279 | Kohler Industrial Nat. Gas, Inc. | Kohler, WI 53044 | Gas Operator | Dec 2000 |
| 280 | Kojo Energy, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Sep 2025 |
| 281 | Koko Skadi, LLC | Austin, TX 78731 | Oil & Gas Operator | Sep 2025 |
| 282 | Kokomo Energy, Inc. | Gorman, TX 76454 | Oil & Gas Operator | Sep 2025 |
| 283 | Kokomo Oil Company | Houston, TX 77227 | Oil & Gas Operator | Apr 1998 |
| 284 | Kolb, James | Aspermont, TX 79502 | Oil & Gas Operator | Jul 2003 |
| 285 | Kollao Properties LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 286 | Konantz, Ronald J. Inc. | Houma, LA 70360 | Oil & Gas Operator | Sep 2025 |
| 287 | Koonce Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Oct 1993 |
| 288 | Koontz Oil Company | Nocona, TX 76255 | Oil Operator | Aug 2022 |
| 289 | Koram Operating LLC | Houston, TX 77079 | Oil & Gas Operator | Dec 2006 |
| 290 | Korman Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jan 2001 |
| 291 | Kornye-Tillman Company | Cleburne, TX 76031 | Oil & Gas Operator | Sep 2025 |
| 292 | Kosarek, Charlie | San Antonio, TX 78213 | Oil & Gas Operator | Oct 2006 |
| 293 | Kouatli, Aiman M. | Caldwell, TX 77836 | Oil & Gas Operator | Sep 2025 |
| 294 | Kovar Operating, LLC | Victoria, TX 77901 | Oil & Gas Operator | Sep 2021 |
| 295 | Koven Production Co. | San Antonio, TX 78232 | Oil & Gas Operator | Aug 2003 |
| 296 | KP Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1997 |
| 297 | Kraker & Martin Energy, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2011 |
| 298 | Kram Energy | Corpus Chrsti, TX 78404 | Oil & Gas Operator | Sep 2025 |
| 299 | Kramer Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 300 | Kramer, Clifford A. | Wichita Falls, TX 76301 | Oil & Gas Operator | Sep 1997 |