| 1301 | Conner Family Limited Partnership | Humble, TX 77338 | Oil & Gas Operator | Aug 2024 |
| 1302 | Conner Jelly | Seminole, OK 74868 | Oil & Gas Operator | Mar 1996 |
| 1303 | Conner Production Co LLC | Seminole, OK 74868 | Oil & Gas Operator | Sep 2024 |
| 1304 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 1305 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Nov 2024 |
| 1306 | Consol Oil Recvry/Ener Co Inc | Cushing, OK 74023 | Oil Operator | Nov 1993 |
| 1307 | Consolidated Exploration Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 1308 | Consolidated Investments | Seminole, OK 74868 | Oil & Gas Operator | Sep 2024 |
| 1309 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 1310 | Consolidated Peto Equity LTD | La Crescenta, CA 91214 | Oil & Gas Operator | Dec 1996 |
| 1311 | Consolidated Properties | Tulsa, OK 74129 | Oil & Gas Operator | Jan 2017 |
| 1312 | Consolidated Resources Corp | Shawnee, OK 74801 | Oil & Gas Operator | Sep 2014 |
| 1313 | Contango Midstream Company | Houston, TX 77002-3023 | Oil & Gas Operator | Sep 2024 |
| 1314 | Contango Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 1315 | Continental Energy | Garden City, KS 67846-0918 | Oil & Gas Operator | Jul 2017 |
| 1316 | Continental Energy Operating LLC | Tulsa, OK 74114-1302 | Oil & Gas Operator | Sep 2024 |
| 1317 | Continental Exploration, L.L.C. | Lufkin, TX 75915 | Oil & Gas Operator | Nov 2024 |
| 1318 | Continental Gas Inc | Enid, OK 73702-5103 | Oil & Gas Operator | Apr 2012 |
| 1319 | Continental Natural Gas, Inc. | Tulsa, OK 74121 | Oil & Gas Operator | Jun 2018 |
| 1320 | Continental Oil & Refining Co | Catoosa, OK 74015-0831 | Oil & Gas Operator | Aug 2024 |
| 1321 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Nov 2024 |
| 1322 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Nov 2024 |
| 1323 | Continuum Midstream LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2024 |
| 1324 | Contreras Al Consultants Inc | Oklahoma City, OK 73113-0762 | Oil & Gas Operator | Oct 2020 |
| 1325 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 1326 | Cook L D | Bartlesville, OK 74005-2306 | Oil & Gas Operator | Nov 2005 |
| 1327 | Cook Oil Company | Wewoka, OK 74884 | Oil & Gas Operator | Sep 2015 |
| 1328 | Cook Robert L | Rockwall, TX 75087-0892 | Oil & Gas Operator | Mar 2015 |
| 1329 | Cook W R Inc | Duncan, OK 73534-0069 | Oil & Gas Operator | Jun 2000 |
| 1330 | Cook William Glenn | Wewoka, OK 74884-0727 | Oil & Gas Operator | Nov 2000 |
| 1331 | Cooke County Production Company | Shawnee, OK 74801-1800 | Oil & Gas Operator | Jan 2022 |
| 1332 | Coon Creek Gas Inc | | Oil & Gas Operator | Mar 2014 |
| 1333 | Coon Creek Transmission LLC | Barnsdall, OK 74002 | Oil & Gas Operator | May 2018 |
| 1334 | Cooper A L & Mae C | | Oil & Gas Operator | Jan 2001 |
| 1335 | Cooper Energy Corp | | Oil & Gas Operator | Jun 1995 |
| 1336 | Cooper John T | Duncan, OK 73534 | Oil & Gas Operator | Sep 2014 |
| 1337 | Cooper Lisa L | Cushing, OK 74023 | Oil & Gas Operator | Mar 2015 |
| 1338 | Cooper Mineral Group Inc | Bellaire, TX 77401 | Oil & Gas Operator | Feb 2004 |
| 1339 | Cooper Oil Inc | Duncan, OK 73534 | Oil & Gas Operator | Sep 2014 |
| 1340 | Cooper Operating LLC | Yukon, OK 73099 | Oil & Gas Operator | Sep 2024 |
| 1341 | Cooper Production Company | New Braunfels, TX 78132 | Oil & Gas Operator | Sep 2021 |
| 1342 | Coppock Herb Energy | Fairview, OK 73737-1037 | Oil & Gas Operator | May 2018 |
| 1343 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 1344 | Coral Production Corporation | Denver, CO 80201 | Oil & Gas Operator | Aug 2024 |
| 1345 | Corbell Wayne L | Fort Worth, TX 76111-4615 | Oil & Gas Operator | Apr 2023 |
| 1346 | Cordillera Energy Partners II LLC | Greenwood VIllage, CO 80111-2856 | Oil & Gas Operator | Jul 2024 |
| 1347 | Cordillera Energy Partners III LLC | Greenwood VIllage, CO 80111-2856 | Oil & Gas Operator | Mar 2014 |
| 1348 | Cordillera Energy Partners, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Mar 2020 |
| 1349 | Corlena Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Nov 2024 |
| 1350 | Corley G R | | Oil & Gas Operator | Jun 2009 |
| 1351 | Corley Production Company | Wilson, OK 73463-7218 | Oil Operator | Sep 2024 |
| 1352 | Corley Production Inc | Comanche, OK 73529-4668 | Oil Operator | Mar 2015 |
| 1353 | Corman, Jack | Dallas, TX 75231 | Oil & Gas Operator | May 2022 |
| 1354 | Cornelius Dale | Willow, OK 73673 | Oil Operator | Aug 2024 |
| 1355 | Cornelius Oil Company | Kellyville, OK 74039-0459 | Oil & Gas Operator | Jul 2015 |
| 1356 | Cornelius Oil Inc | Kellyville, OK 74039 | Oil & Gas Operator | Aug 2024 |
| 1357 | Cornelius Petroleum Inc | Kellyville, OK 74039 | Oil & Gas Operator | Aug 2024 |
| 1358 | Cornelius Phillip J & Connie | Kellyville, OK 74039 | Oil & Gas Operator | Dec 2000 |
| 1359 | Cornelius Tony | Sapulpa, OK 74066-5845 | Oil & Gas Operator | Jul 2024 |
| 1360 | Cornell Glen R | Pauls Valley, OK 73075-9606 | Oil & Gas Operator | Oct 2013 |
| 1361 | Corner Energy LLC | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Mar 2015 |
| 1362 | Cornerstone E & P Company, LP | Irving, TX 75038 | Oil & Gas Operator | Nov 2010 |
| 1363 | Coronado Energy Partners LLC | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2024 |
| 1364 | Coronado Great Plains LLC | Tulsa, OK 74137-2832 | Gas Operator | Apr 2013 |
| 1365 | Coronado Oklahoma LLC | Tulsa, OK 74133-7036 | Gas Operator | Apr 2020 |
| 1366 | Coronado Petroleum Corporation | Oklahoma City, OK 73102-4803 | Oil & Gas Operator | Aug 2024 |
| 1367 | Corpening, Joe F. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 1368 | Corterra Energy Operating LLC | Tulsa, OK 74119-4844 | Oil & Gas Operator | Aug 2021 |
| 1369 | Cortez Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2016 |
| 1370 | Corvin Craig | Jenks, OK 74037-0516 | Oil Operator | Feb 2012 |
| 1371 | Corwin, B. V. | Enid, OK 73701 | Oil & Gas Operator | Apr 2017 |
| 1372 | Cory, Kenneth W. | Bellaire, TX 77401 | Oil & Gas Operator | Mar 2012 |
| 1373 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 1374 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 1375 | Cotton County Ventures | Estes Park, CO 80517 | Oil Operator | Nov 2003 |
| 1376 | Cotton Petroleum Corporation | Tulsa, OK 74102 | Oil & Gas Operator | Jan 2005 |
| 1377 | Cottonmouth SWD LLC | Tulsa, OK 74103-3522 | Oil Operator | Aug 2024 |
| 1378 | Couch Donald W | Marlow, OK 73055-5252 | Oil & Gas Operator | Sep 2024 |
| 1379 | Couch Fred J | Broken Arrow, OK 74012 | Oil Operator | Mar 2010 |
| 1380 | Cougar Energy Investment LLC | Spring, TX 77387-7277 | Oil & Gas Operator | Sep 2014 |
| 1381 | Coughlin Daniel | El Reno, OK 73036 | Oil Operator | Aug 2000 |
| 1382 | Council Oak Resources LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Sep 2024 |
| 1383 | County Line Stripper Wells LLC | Chelsea, OK 74016 | Oil & Gas Operator | Jun 2024 |
| 1384 | Countyline Production Co LLC | Duncan, OK 73533 | Oil Operator | Sep 2024 |
| 1385 | Couroil, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Sep 2000 |
| 1386 | Courson Oil & Gas, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Nov 2024 |
| 1387 | Courson, Harold D. | Perryton, TX 79070 | Oil & Gas Operator | Aug 1998 |
| 1388 | Cousins Exploration Co | Wichita Falls, TX 76307 | Oil Operator | Jun 1991 |
| 1389 | Cove Petroleum Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2020 |
| 1390 | Covenant Oil Corp | Broken Arrow, OK 74014 | Oil & Gas Operator | May 2013 |
| 1391 | Covington Oil Company Inc | Nichols Hills, OK 73116 | Oil & Gas Operator | Sep 2024 |
| 1392 | Cow Creek Resources Inc | Ponca City, OK 74601-7815 | Oil & Gas Operator | Aug 2024 |
| 1393 | Cowboy Oil & Gas | Bristow, OK 74010-0057 | Oil & Gas Operator | Jul 2018 |
| 1394 | Cowboy Operating LLC | Oklahoma City, OK 73120 | Oil Operator | Aug 2024 |
| 1395 | Cowden SR Lester L | Oklahoma City, OK 73118-4011 | Oil & Gas Operator | Sep 1999 |
| 1396 | Cowles James C | Muskogee, OK 74401-5262 | Oil Operator | Aug 2024 |
| 1397 | Cox Bros Oil Co | Hominy, OK 74035 | Oil Operator | Mar 2022 |
| 1398 | Cox Edwin L & R Berry | Dallas, TX 75202 | Oil & Gas Operator | Apr 2015 |
| 1399 | Cox Elmer N | Irving, TX 75181 | Oil Operator | Aug 2013 |
| 1400 | Cox Exploration, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1999 |