| 1301 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Sep 2026 |
| 1302 | Contreras Al Consultants Inc | Oklahoma City, OK 73113-0762 | Oil & Gas Operator | Oct 2020 |
| 1303 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 1304 | Cook L D | Bartlesville, OK 74005-2306 | Oil & Gas Operator | Nov 2005 |
| 1305 | Cook Oil Company | Wewoka, OK 74884 | Oil & Gas Operator | May 2026 |
| 1306 | Cook Robert L | Rockwall, TX 75087-0892 | Oil & Gas Operator | Mar 2015 |
| 1307 | Cook W R Inc | Duncan, OK 73534-0069 | Oil & Gas Operator | Jun 2000 |
| 1308 | Cook William Glenn | Wewoka, OK 74884-0727 | Oil & Gas Operator | Nov 2000 |
| 1309 | Cooke County Production Company | Shawnee, OK 74801-1800 | Oil & Gas Operator | Jan 2022 |
| 1310 | Coon Creek Gas Inc | | Oil & Gas Operator | Mar 2014 |
| 1311 | Cooper A L & Mae C | | Oil & Gas Operator | Jan 2001 |
| 1312 | Cooper Energy Corp | | Oil & Gas Operator | Jun 1995 |
| 1313 | Cooper John T | Duncan, OK 73534 | Oil & Gas Operator | Sep 2014 |
| 1314 | Cooper Lisa L | Cushing, OK 74023 | Oil & Gas Operator | Mar 2015 |
| 1315 | Cooper Mineral Group Inc | Bellaire, TX 77401 | Oil & Gas Operator | Feb 2004 |
| 1316 | Cooper Oil Inc | Duncan, OK 73534 | Oil & Gas Operator | Sep 2014 |
| 1317 | Cooper Operating LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2026 |
| 1318 | Cooper Production Company | New Braunfels, TX 78132 | Oil & Gas Operator | Sep 2021 |
| 1319 | Coppock Herb Energy | Fairview, OK 73737-1037 | Oil & Gas Operator | May 2018 |
| 1320 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 1321 | Coral Production Corporation | Denver, CO 80201 | Oil & Gas Operator | Apr 2026 |
| 1322 | Corbell Wayne L | Arlinton, TX 76006 | Oil & Gas Operator | Apr 2023 |
| 1323 | Cordillera Energy Partners II LLC | Greenwood VIllage, CO 80111-2856 | Oil & Gas Operator | May 2026 |
| 1324 | Cordillera Energy Partners III LLC | Greenwood VIllage, CO 80111-2856 | Oil & Gas Operator | Mar 2014 |
| 1325 | Cordillera Energy Partners, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Mar 2020 |
| 1326 | Corlena Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Sep 2026 |
| 1327 | Corley G R | | Oil & Gas Operator | Jun 2009 |
| 1328 | Corley Production Company | Wilson, OK 73463-7218 | Oil Operator | Jun 2026 |
| 1329 | Corley Production Inc | Comanche, OK 73529-4668 | Oil Operator | Mar 2015 |
| 1330 | Corman, Jack | Dallas, TX 75231 | Oil & Gas Operator | May 2022 |
| 1331 | Cornelius Dale | Willow, OK 73673 | Oil Operator | Apr 2026 |
| 1332 | Cornelius Oil Company | Kellyville, OK 74039-0459 | Oil & Gas Operator | Jul 2015 |
| 1333 | Cornelius Oil Inc | Kellyville, OK 74039 | Oil & Gas Operator | May 2026 |
| 1334 | Cornelius Petroleum Inc | | Oil & Gas Operator | May 2026 |
| 1335 | Cornelius Phillip J & Connie | Kellyville, OK 74039 | Oil & Gas Operator | Dec 2000 |
| 1336 | Cornelius Tony | Sapulpa, OK 74066-5845 | Oil & Gas Operator | May 2026 |
| 1337 | Cornelius, Steven L | | Oil Operator | Sep 2015 |
| 1338 | Cornell Glen R | Pauls Valley, OK 73075-9606 | Oil & Gas Operator | Oct 2013 |
| 1339 | Corner Energy LLC | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Mar 2015 |
| 1340 | Cornerstone E & P Company LP | Irving, TX 75038 | Oil & Gas Operator | Nov 2010 |
| 1341 | Coronado Energy Partners LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2026 |
| 1342 | Coronado Great Plains LLC | Tulsa, OK 74137-2832 | Gas Operator | Apr 2013 |
| 1343 | Coronado Oklahoma LLC | Tulsa, OK 74133-7036 | Gas Operator | Apr 2020 |
| 1344 | Coronado Petroleum Corporation | Oklahoma City, OK 73102-4803 | Oil & Gas Operator | May 2026 |
| 1345 | Corpening, Joe F. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 1346 | Corterra Energy Operating LLC | Tulsa, OK 74119-4844 | Oil & Gas Operator | Aug 2021 |
| 1347 | Cortez Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2016 |
| 1348 | Corwin B V | Enid, OK 73701 | Oil & Gas Operator | Apr 2017 |
| 1349 | Cory, Kenneth W. | Bellaire, TX 77401 | Oil & Gas Operator | Mar 2012 |
| 1350 | Costilla Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 1351 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 1352 | Coterra Energy Operating Co. | Midland, TX 79706 | Oil & Gas Operator | Sep 2026 |
| 1353 | Cotton County Ventures | Estes Park, CO 80517 | Oil Operator | Nov 2003 |
| 1354 | Cotton Petroleum Corporation | Tulsa, OK 74102 | Oil & Gas Operator | Jan 2005 |
| 1355 | Cottonmouth SWD LLC | Tulsa, OK 74103-3522 | Oil Operator | Jun 2026 |
| 1356 | Couch Donald W | Marlow, OK 73055 | Oil & Gas Operator | May 2026 |
| 1357 | Couch Fred J | Broken Arrow, OK 74012 | Oil Operator | Mar 2010 |
| 1358 | Cougar Energy Investment LLC | Spring, TX 77387-7277 | Oil & Gas Operator | Sep 2014 |
| 1359 | Cougar Oil | | Oil Operator | May 2026 |
| 1360 | Coughlin, Daniel L | | Oil Operator | Aug 2000 |
| 1361 | Council Oak Resources LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | May 2026 |
| 1362 | County Line Stripper Wells LLC | Chelsea, OK 74016 | Oil & Gas Operator | Apr 2026 |
| 1363 | Countyline Production Co LLC | Duncan, OK 73533 | Oil Operator | Jun 2026 |
| 1364 | Couroil, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Sep 2000 |
| 1365 | Courson Oil & Gas, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Sep 2026 |
| 1366 | Courson, Harold D. | Perryton, TX 79070 | Oil & Gas Operator | Aug 1998 |
| 1367 | Cousins Exploration Co | Wichita Falls, TX 76307 | Oil Operator | Jun 1991 |
| 1368 | Cove Petroleum Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2020 |
| 1369 | Covenant Oil Corp | Broken Arrow, OK 74014 | Oil & Gas Operator | May 2013 |
| 1370 | Covington Oil Company Inc | Nichols Hills, OK 73116 | Oil & Gas Operator | Jun 2026 |
| 1371 | Cow Creek Resources Inc | Ponca City, OK 74601-7815 | Oil & Gas Operator | May 2026 |
| 1372 | Cowboy Oil & Gas | Bristow, OK 74010-0057 | Oil & Gas Operator | Jul 2018 |
| 1373 | Cowboy Operating LLC | Oklahoma City, OK 73120 | Oil Operator | Mar 2026 |
| 1374 | Cowden SR Lester L | Oklahoma City, OK 73118-4011 | Oil & Gas Operator | Sep 1999 |
| 1375 | Cowles James C | Muskogee, OK 74401-5262 | Oil Operator | Mar 2026 |
| 1376 | Cox Edwin L & R Berry | Dallas, TX 75202 | Oil & Gas Operator | Apr 2015 |
| 1377 | Cox Elmer N | Irving, TX 75181 | Oil Operator | Aug 2013 |
| 1378 | Cox Exploration, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1999 |
| 1379 | Cox Gas Corporation | Dallas, TX 75201-7306 | Oil & Gas Operator | Apr 2015 |
| 1380 | Cox Linda | Bristow, OK 74010-0808 | Oil & Gas Operator | Jan 2018 |
| 1381 | Cox Oil & Gas Inc | Dallas, TX 75201 | Oil & Gas Operator | Mar 2014 |
| 1382 | Cox P D Inc | Bristow, OK 74010 | Oil & Gas Operator | May 1993 |
| 1383 | Cox Resources Corporation | Dallas, TX 75244 | Oil & Gas Operator | Mar 2015 |
| 1384 | Cox Robert L | Blackwell, OK 74631 | Oil & Gas Operator | May 2026 |
| 1385 | Cox, Gary L | | Oil Operator | Mar 2022 |
| 1386 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 1387 | CP Energy, LLC | Edmond, OK 73034 | Oil Operator | Jul 2025 |
| 1388 | CPRC Inc | Tulsa, OK 74103-5037 | Oil & Gas Operator | Apr 1997 |
| 1389 | CPRP Services LLC | Oklahoma City, OK 73102-5804 | Oil & Gas Operator | May 2026 |
| 1390 | Crabtree Barbara T | Forney, TX 75126-5818 | Oil & Gas Operator | Oct 2024 |
| 1391 | Craft & Craft Productions LLC | | Oil Operator | May 2025 |
| 1392 | Craig Elder Oil And Gas LLC | Edmond, OK 73013 | Oil & Gas Operator | May 2026 |
| 1393 | Crain & Deisenroth | Tulsa, OK 74103-4433 | Oil & Gas Operator | Mar 2015 |
| 1394 | Crain & Deisenroth LLC | Tulsa, OK 74104-6511 | Oil & Gas Operator | Apr 2014 |
| 1395 | Crain Minerals LLC | Oklahoma City, OK 73120-1004 | Oil & Gas Operator | Aug 2014 |
| 1396 | Cramer Oil LLC | Nowata, OK 74048-6011 | Oil Operator | May 2026 |
| 1397 | Crasco Oil Company | Tulsa, OK 74120 | Oil Operator | Nov 1998 |
| 1398 | Craw Operating LLC | Mooreland, OK 73852 | Oil & Gas Operator | May 2026 |
| 1399 | Crawley Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2026 |
| 1400 | CRB Resources Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | May 2026 |