| 2301 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2024 |
| 2302 | COG Production LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2024 |
| 2303 | Coho Resources Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 2002 |
| 2304 | Cohort Energy Company | Centennial, CO 80112 | Oil & Gas Operator | Feb 2007 |
| 2305 | Coker, Jonathan C., Inc. | Austin, TX 78746 | Oil Operator | Mar 2011 |
| 2306 | Coker, Nel Rey Daws | Throckmorton, TX 76483 | Oil & Gas Operator | Mar 2008 |
| 2307 | Coker, Tom | Seymour, TX 76380 | Oil & Gas Operator | Sep 2006 |
| 2308 | Cokinos, Inc. | Beaumont, TX 77701 | Oil & Gas Operator | Aug 2003 |
| 2309 | Colby Production Resources, LLC | Granbury, TX 76048 | Oil Operator | Nov 2024 |
| 2310 | Cole, Frank W Engineering | Dallas, TX 75254 | Oil & Gas Operator | Mar 2006 |
| 2311 | Cole, John Otis | Big Spring, TX 79721 | Oil & Gas Operator | Jan 1999 |
| 2312 | Coleman & Johnson Oil Company | Brownwood, TX 76801 | Oil & Gas Operator | Nov 2024 |
| 2313 | Coleman County Project | Coleman, TX 76834 | Oil & Gas Operator | Oct 2012 |
| 2314 | Coleman Oil & Gas Corp. | Fort Worth, TX 76109 | Oil & Gas Operator | Nov 2024 |
| 2315 | Coleman Oil & Gas Inc | Farmington, NM 87499 | Oil & Gas Operator | Jan 2023 |
| 2316 | Colemanite, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Nov 2024 |
| 2317 | Coleville Petroleum Company | McAllen, TX 78503 | Oil & Gas Operator | Mar 1996 |
| 2318 | Coley, H. B. | Corsicana, TX 75110 | Oil & Gas Operator | Oct 2000 |
| 2319 | Coley, Thomas | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 2320 | Colgate Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 2321 | Collier Oil Field Services Inc | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2024 |
| 2322 | Collier, Scott Inc. | Holliday, TX 76366 | Oil Operator | May 2003 |
| 2323 | Collier, W. D. Ranch | Post, TX 79356 | Oil & Gas Operator | Jan 2012 |
| 2324 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 2325 | Collins Resources, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Mar 2011 |
| 2326 | Colo Construction Co., Inc. | Abilene, TX 79602 | Oil Operator | Apr 2004 |
| 2327 | Colo Exploration Company, Inc. | Benbrook, TX 76126 | Oil & Gas Operator | Nov 2024 |
| 2328 | Cologne Production Company | San Antonio, TX 78209 | Oil & Gas Operator | Nov 2014 |
| 2329 | Colorado Bluebonnet Energy Corp. | Englewood, CO 80112 | Oil & Gas Operator | Feb 2001 |
| 2330 | Colorado-Swanson Landing Oil & Gas, LLC | Kilgore, TX 75663 | Oil Operator | Nov 2024 |
| 2331 | Colotex Operating, LLC | Aurora, CO 80015 | Oil & Gas Operator | Nov 2024 |
| 2332 | Colt Oil & Gas Co. | Abilene, TX 79601 | Oil Operator | Apr 2004 |
| 2333 | Colt Oil Company | Andrews, TX 79714 | Oil & Gas Operator | Feb 1996 |
| 2334 | Colt Resources Corporation | Billings, MT 59103 | Oil & Gas Operator | Feb 2013 |
| 2335 | Columbia Energy Properties, Inc. | Baytown, TX 77521 | Oil & Gas Operator | Jul 2004 |
| 2336 | Columbia Gas Development Corp. | Houston, TX 77251 | Oil & Gas Operator | Jun 1996 |
| 2337 | Columbia Production Company | Edmond, OK 73083 | Oil & Gas Operator | May 2020 |
| 2338 | Columbus Energy Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2008 |
| 2339 | Columbus Energy, LLC | Houston, TX 77046 | Oil & Gas Operator | Nov 2024 |
| 2340 | Comac Well Service, Inc. | Borger, TX 79008 | Oil & Gas Operator | Mar 2008 |
| 2341 | Comal Operating LLC | San Antonio, TX 78217 | Oil & Gas Operator | Nov 2024 |
| 2342 | Comanche Oil And Gas Company | Brownwood, TX 76801 | Oil & Gas Operator | Nov 2024 |
| 2343 | Comanche Operating Co. | Oklahoma City, OK 73120 | Oil & Gas Operator | Aug 2002 |
| 2344 | Comanche Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2006 |
| 2345 | Comanche Well Service Corp. | Plano, TX 75093 | Oil & Gas Operator | Nov 2024 |
| 2346 | Combined Resources Corporation | Edmond, OK 73083 | Oil & Gas Operator | Nov 2024 |
| 2347 | Comco Of Louisiana, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2000 |
| 2348 | Comet Oil & Gas, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Nov 2024 |
| 2349 | Comet Production | Conroe, TX 77305 | Oil Operator | Nov 2024 |
| 2350 | Cometra Oil And Gas, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 1997 |
| 2351 | Common Resources L.L.C. | The Woodlands, TX 77380 | Oil & Gas Operator | May 2010 |
| 2352 | Commonwealth Resources, LLC | Fort Collins, CO 80524 | Oil Operator | Dec 2008 |
| 2353 | Commonwealth Royalty, LLC | Balmorhea, TX 79718 | Oil Operator | Nov 2024 |
| 2354 | Compass Energy Operating, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2024 |
| 2355 | Compass Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 2356 | Compostella Oil Company | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 2357 | Comstock Energy, LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Nov 2024 |
| 2358 | Comstock Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Dec 2012 |
| 2359 | Comstock Oil & Gas, LLC | Frisco, TX 75034 | Oil & Gas Operator | Nov 2024 |
| 2360 | Comstock Oil & Gas, LP | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 2361 | Comyn Natural Gas, Inc. | Fort Worth, TX 76163 | Oil & Gas Operator | Nov 2024 |
| 2362 | Con-Lin Oil Co. | Graham, TX 76450 | Oil & Gas Operator | Nov 2017 |
| 2363 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 2364 | Concho Oil & Gas Corp. | Midland, TX 79701 | Oil & Gas Operator | May 2003 |
| 2365 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Nov 2024 |
| 2366 | Concho Oilfield Service, Inc. | Albany, TX 76430 | Oil & Gas Operator | Apr 2013 |
| 2367 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 2368 | Concord Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2021 |
| 2369 | Concord Energy, Inc. | Glen Rose, TX 76043 | Oil & Gas Operator | Nov 2024 |
| 2370 | Concord Operating Incorporated | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Dec 2008 |
| 2371 | Concorde Exploration, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Oct 1994 |
| 2372 | Condor Operating Co. | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 2373 | Condor Operating Company, LLC | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 2374 | Condor Petroleum, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 2375 | Condra, James M. Jr. | Sonora, TX 76950 | Oil & Gas Operator | May 1996 |
| 2376 | Cone & Petree Oil & Gas Exp. Inc | Lubbock, TX 79453 | Oil & Gas Operator | May 2024 |
| 2377 | Cone, Charles M. Services, Inc. | Dallas, TX 75372 | Oil & Gas Operator | Sep 2005 |
| 2378 | Cone, S. E. Jr. | Lubbock, TX 79408 | Oil & Gas Operator | Feb 2002 |
| 2379 | Confed Oil Incorporated | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2008 |
| 2380 | Connaway Oil & Gas Co. | Brookesmith, TX 76827 | Oil & Gas Operator | Feb 2016 |
| 2381 | Conner-Marrs Company | Tulsa, OK 74105 | Oil & Gas Operator | Nov 2024 |
| 2382 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 2383 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Nov 2024 |
| 2384 | Conquest Energy, Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Nov 2024 |
| 2385 | Conquest Oil Company | Big Spring, TX 79721 | Oil & Gas Operator | Aug 2024 |
| 2386 | Conquistador Petroleum,Inc. | Coleman, TX 76834 | Oil & Gas Operator | Nov 2024 |
| 2387 | Cons Asset MGMT SVCS E&P Op, LLC | Houston, TX 77002 | Oil Operator | Dec 2017 |
| 2388 | Consolidated Exploration Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 2389 | Consolidated Natural Res. Corp. | Kilgore, TX 75662 | Oil & Gas Operator | Jan 2016 |
| 2390 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 2391 | Consolidated Petro PTNRS I, LLC | Austin, TX 78759 | Oil & Gas Operator | Mar 2003 |
| 2392 | Consolidated Properties | Tulsa, OK 74129 | Oil & Gas Operator | Jan 2017 |
| 2393 | Contango Operators, Inc. | Houston, TX 77098 | Oil & Gas Operator | Dec 2022 |
| 2394 | Contango Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 2395 | Contango Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2024 |
| 2396 | Continental Exploration, L.L.C. | Lufkin, TX 75915 | Oil & Gas Operator | Nov 2024 |
| 2397 | Continental Export Corporation | Bowie, TX 76230 | Oil & Gas Operator | Sep 2013 |
| 2398 | Continental Natural Gas, Inc. | Tulsa, OK 74121 | Oil & Gas Operator | Jun 2018 |
| 2399 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Nov 2024 |
| 2400 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Nov 2024 |