| 2401 | Cottonwood Prod Co Inc | Buffalo, NY 14202-2212 | Gas Operator | Dec 2002 |
| 2402 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 2403 | Couch Donald W | Marlow, OK 73055 | Oil & Gas Operator | Nov 2025 |
| 2404 | Couch Fred J | Broken Arrow, OK 74012 | Oil Operator | Mar 2010 |
| 2405 | Couch Oil & Gas, Inc. | Dallas, TX 75229 | Oil & Gas Operator | Feb 2026 |
| 2406 | Couch, Gilbert | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 2407 | Couch, Harry L. | Odessa, TX 79762 | Oil & Gas Operator | Nov 1994 |
| 2408 | Cougar Energies, Inc. | Oberlin, KS 67749 | Oil Operator | Jun 1996 |
| 2409 | Cougar Energy Inc | Oil City, PA 16301-4046 | Oil & Gas Operator | Dec 2013 |
| 2410 | Cougar Energy Investment LLC | Spring, TX 77387-7277 | Oil & Gas Operator | Sep 2014 |
| 2411 | Cougar Exploration, Inc. | | Oil & Gas Operator | Jun 1988 |
| 2412 | Cougar Oil | | Oil Operator | Jul 2025 |
| 2413 | Cougar Oil & Gas Co., Inc. | Houston, TX 77269 | Oil & Gas Operator | Mar 2008 |
| 2414 | Cougar Oil, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Jun 2009 |
| 2415 | Coughlin, Daniel L | | Oil Operator | Aug 2000 |
| 2416 | Coulthurst MGT & Inv Inc | Reno, NV 89504 | Oil Operator | Sep 2020 |
| 2417 | Council Oak Resources LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Nov 2025 |
| 2418 | Country Boy Oil Co Inc | | Oil Operator | Nov 2017 |
| 2419 | Country Side Sand & Gravel, Inc | Collins, NY 14034 | Gas Operator | Dec 2024 |
| 2420 | Countrymark Energy Resources L L C | MT Vernon, IN 47620 | Oil & Gas Operator | Dec 2023 |
| 2421 | County Line Stone Co., Inc. | Akron, NY 14001 | Gas Operator | Dec 2024 |
| 2422 | County Line Stripper Wells LLC | Chelsea, OK 74016 | Oil & Gas Operator | Oct 2025 |
| 2423 | County Management, Inc. | Houston, TX 77055 | Oil & Gas Operator | Apr 1993 |
| 2424 | Countyline Production Co LLC | Duncan, OK 73533 | Oil Operator | Dec 2025 |
| 2425 | Couroil, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Sep 2000 |
| 2426 | Courson Oil & Gas, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Feb 2026 |
| 2427 | Courson, Harold D. | Perryton, TX 79070 | Oil & Gas Operator | Aug 1998 |
| 2428 | Courtland City Lights Assoc. | | Oil Operator | Dec 2005 |
| 2429 | Courtney Oil Co. | | Oil Operator | Dec 1998 |
| 2430 | Coushatta Oil & Gas Inc. | | Oil & Gas Operator | Jan 2007 |
| 2431 | Cousins Exploration Co | Wichita Falls, TX 76307 | Oil Operator | Jun 1991 |
| 2432 | Cove Petroleum Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2020 |
| 2433 | Covenant Oil & Gas, L.P. | Houston, TX 77057 | Oil & Gas Operator | Dec 2006 |
| 2434 | Covenant Oil Company | Houma, LA 70360 | Oil & Gas Operator | Dec 2015 |
| 2435 | Covenant Oil Corp | Broken Arrow, OK 74014 | Oil & Gas Operator | May 2013 |
| 2436 | Covenant Operating, LLC | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 2437 | Covenant Production Co., L.C. | Midland, TX 79702 | Oil & Gas Operator | Nov 2002 |
| 2438 | Covert, Christopher P. | Auburn, NY 13021 | Gas Operator | Dec 2024 |
| 2439 | Covey Energy, Inc. | | Oil & Gas Operator | Jun 1998 |
| 2440 | Covey Park Gas LLC | | Oil & Gas Operator | Aug 2019 |
| 2441 | Covey Park Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Aug 2019 |
| 2442 | Covey Park Resources LLC | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 2443 | Covington & Covington | | Gas Operator | Nov 2000 |
| 2444 | Covington Oil Company Inc | Nichols Hills, OK 73116 | Oil & Gas Operator | Dec 2025 |
| 2445 | Cow Creek Resources Inc | Ponca City, OK 74601-7815 | Oil & Gas Operator | Nov 2025 |
| 2446 | Cow Run LTD Liability Company | Davidson, NC 28036 | Oil & Gas Operator | Nov 2018 |
| 2447 | Cowan Oil Company | | Oil Operator | Sep 1990 |
| 2448 | Cowboy Clean Fuels LLC | Laramie, WY 82072 | Gas Operator | Nov 2025 |
| 2449 | Cowboy Oil & Gas | Bristow, OK 74010-0057 | Oil & Gas Operator | Jul 2018 |
| 2450 | Cowboy Operating LLC | Oklahoma City, OK 73120 | Oil Operator | Nov 2025 |
| 2451 | Cowboys Resources Corp. | New Braunfels, TX 78132 | Oil Operator | Jan 2008 |
| 2452 | Cowden SR Lester L | Oklahoma City, OK 73118-4011 | Oil & Gas Operator | Sep 1999 |
| 2453 | Cowen Michael T | | Oil & Gas Operator | Dec 2009 |
| 2454 | Cowles James C | Muskogee, OK 74401-5262 | Oil Operator | Sep 2025 |
| 2455 | Cowley Energy Associates, LLC | Plano, TX 75093 | Gas Operator | Dec 2009 |
| 2456 | Cowrie Energy LLC | Austin, TX 78703 | Oil & Gas Operator | Feb 2026 |
| 2457 | Cowry Enterprises, LTD. | Littleton, CO 80161-3310 | Oil & Gas Operator | Mar 2022 |
| 2458 | Cox & Perkins Exploration, Inc. | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 2459 | Cox Edwin L & Be | | Oil & Gas Operator | Nov 1989 |
| 2460 | Cox Edwin L & Berry R | | Oil & Gas Operator | Oct 1987 |
| 2461 | Cox Edwin L & R Berry | Dallas, TX 75202 | Oil & Gas Operator | Apr 2015 |
| 2462 | Cox Elmer N | Irving, TX 75181 | Oil Operator | Aug 2013 |
| 2463 | Cox Engineering, LLC | Abilene, TX 79605 | Oil Operator | Mar 2006 |
| 2464 | Cox Exploration | Cherryvale, KS 67335 | Gas Operator | Aug 1989 |
| 2465 | Cox Exploration, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1999 |
| 2466 | Cox Gas Corporation | Dallas, TX 75201-7306 | Oil & Gas Operator | Apr 2015 |
| 2467 | Cox Kendall Jay | Recluse, WY 28775 | Oil & Gas Operator | Aug 2016 |
| 2468 | Cox Linda | Bristow, OK 74010-0808 | Oil & Gas Operator | Jan 2018 |
| 2469 | Cox Oil & Gas Inc | Dallas, TX 75201 | Oil & Gas Operator | Mar 2014 |
| 2470 | Cox Operating Co. | Wichita Falls, TX 76310 | Oil & Gas Operator | Jun 2000 |
| 2471 | Cox Operating, L.L.C. | | Oil & Gas Operator | Jan 2024 |
| 2472 | Cox P D Inc | Bristow, OK 74010 | Oil & Gas Operator | May 1993 |
| 2473 | Cox Resources Corporation | Dallas, TX 75244 | Oil & Gas Operator | Mar 2015 |
| 2474 | Cox Robert L | Blackwell, OK 74631 | Oil & Gas Operator | Oct 2025 |
| 2475 | Cox, Gary L | | Oil Operator | Mar 2022 |
| 2476 | Cox, H. L. | Wichita Falls, TX 76307 | Oil & Gas Operator | Jan 2011 |
| 2477 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 2478 | Cox, Lee Investments Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | Feb 2026 |
| 2479 | Cox, Martin Regan | Irving, TX 75014 | Oil & Gas Operator | Feb 2026 |
| 2480 | Cox, Robert G. & Associates,Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 1994 |
| 2481 | Cox, Wayne D. | Eureka, KS 67045 | Oil Operator | Sep 1991 |
| 2482 | Coy W. Hale | | Oil Operator | Nov 2024 |
| 2483 | Coyote Oil Company | Lufkin, TX 75915 | Oil & Gas Operator | Sep 1996 |
| 2484 | Coyote Oil Company. LTD. | | Oil & Gas Operator | Dec 1997 |
| 2485 | Coyote Oil LLC | | Oil Operator | Jan 2018 |
| 2486 | Coyote Oil, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2026 |
| 2487 | Coyote Operating, LLC | Graham, TX 76450 | Oil Operator | Feb 2026 |
| 2488 | Coyote Services, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Mar 2002 |
| 2489 | Cozart Producers | | Oil Operator | Dec 2025 |
| 2490 | CP Energy, LLC | Edmond, OK 73034 | Oil Operator | Jul 2025 |
| 2491 | CP Exploration III Operating,LLC | Lafayette, LA 70505 | Oil & Gas Operator | Sep 2023 |
| 2492 | CP Exploration TX Operating LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2017 |
| 2493 | CPBG, LLC | | Oil Operator | Oct 2019 |
| 2494 | Cpi 5, L.L.C | | Oil Operator | Dec 2023 |
| 2495 | Cpi Operating Co. | | Oil & Gas Operator | Mar 2003 |
| 2496 | Cpi Operating Company, LLC | | Oil Operator | Jan 2025 |
| 2497 | Cpmak Investments, Inc. | Cross Plains, TX 76443 | Oil Operator | Feb 2026 |
| 2498 | CPRC Inc | Tulsa, OK 74103-5037 | Oil & Gas Operator | Apr 1997 |
| 2499 | CPRP Services LLC | Oklahoma City, OK 73102-5804 | Oil & Gas Operator | Nov 2025 |
| 2500 | CPX Energy Operating, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Feb 2026 |