| 401 | Riddle, James O | Albany, KY 42602 | Oil Operator | Dec 2022 |
| 402 | Rife, Bud Dba B & S Gas & Oil Co | Harold, KY 41635 | Oil & Gas Operator | Dec 2022 |
| 403 | Riley & Scott Gas Co | Pikeville, KY 41502 | Gas Operator | Dec 2021 |
| 404 | Riverside Oil & Gas, Inc | Burkesville, KY 42717 | Oil Operator | Dec 2016 |
| 405 | Rlu Operating, LLC | Devine, TX 78016 | Oil & Gas Operator | Mar 2025 |
| 406 | Roberts, Harry S &/Or McKinley Ray | Paintsville, KY 41240 | Oil & Gas Operator | Dec 2019 |
| 407 | Roberts, Oliver M | | Oil & Gas Operator | Dec 2021 |
| 408 | Robertson Farms, LLC | Calhoun, KY 42327 | Oil Operator | Dec 2022 |
| 409 | Robertson, David | Bowling Green, KY 42103 | Oil Operator | Dec 2022 |
| 410 | Robinson Engineering & Oil Company, Inc | Evansville, IN 47716 | Oil & Gas Operator | Dec 2022 |
| 411 | Rodline Petroleum LLC | Adolphus, KY 42120 | Oil Operator | Dec 2022 |
| 412 | Rogers, Clyde | Zellwood, FL 32798 | Oil Operator | Dec 2022 |
| 413 | Roseclare Oil Co | | Oil Operator | Dec 2016 |
| 414 | Roskee, Inc | | Oil Operator | Dec 2022 |
| 415 | Rossi, Paul | FT Meade, FL 33841 | Oil Operator | Dec 2022 |
| 416 | Rover Construction, LLC | | Oil Operator | Dec 2022 |
| 417 | Ryholland Fielder, Inc | Delray Beach, FL 33446 | Oil & Gas Operator | Mar 2025 |
| 418 | S & C Drilling, Inc | Columbia, KY 42728 | Oil Operator | Dec 2021 |
| 419 | Saap Energy, Inc | Newburgh, NY 12550 | Oil Operator | Dec 2022 |
| 420 | Sand Dollar, LLC | Henderson, KY 42420 | Oil & Gas Operator | Dec 2018 |
| 421 | Sanford, Marion | Bowling Green, KY 42101 | Oil Operator | Dec 2022 |
| 422 | Sargent Oil & Gas Company | | Oil & Gas Operator | Dec 2022 |
| 423 | Sarver, Danny & Meador, Steve | Adolphus, KY 42120 | Oil Operator | Dec 2018 |
| 424 | Savage Exploration, Inc. | San Marcos, TX 78666 | Oil & Gas Operator | Mar 2025 |
| 425 | Schuster Homes Inc | Rangely, CO 81648 | Oil & Gas Operator | Apr 2013 |
| 426 | Shale Energy LLC | Jeffersonville, KY 40337 | Oil Operator | Dec 2018 |
| 427 | Shenandoah Energy Inc | Denver, CO 80265-1050 | Oil & Gas Operator | Aug 2003 |
| 428 | Shulz-Hill-Swank | | Oil Operator | Dec 2022 |
| 429 | Silvco Energy, LLC | | Oil Operator | Apr 2014 |
| 430 | Sinkhole Solutions, LLC | Bowling Green, KY 42103 | Oil Operator | Dec 2021 |
| 431 | Sipple Oil Co | Beattyville, KY 41311 | Oil Operator | Dec 2012 |
| 432 | Skipworth, Joseph D | | Oil Operator | Dec 2021 |
| 433 | Sky Oil Co | | Oil Operator | Dec 2022 |
| 434 | Slone Energy, LLC | Oil Springs, KY 41238 | Oil & Gas Operator | Dec 2022 |
| 435 | Smith, Alan S | | Gas Operator | Dec 2022 |
| 436 | Smith, Donald B | | Oil Operator | Dec 2020 |
| 437 | Smith, Donald B (Deceased) | Calhoun, KY 42327 | Oil Operator | Dec 2022 |
| 438 | Smith, Loretta Sue | Park City, KY 42160 | Oil Operator | Dec 2022 |
| 439 | South Fork Energy, LLC - (Ca) | | Oil Operator | Dec 2020 |
| 440 | Southeastern Gas Company | | Oil & Gas Operator | Dec 2015 |
| 441 | Southern Oil & Gas LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Mar 2025 |
| 442 | Southern Triangle Oil Co | MT Carmel, IL 62863 | Oil & Gas Operator | Dec 2022 |
| 443 | Spirit Energy L.L.C. | Caddo Mills, TX 75135 | Oil & Gas Operator | Dec 2016 |
| 444 | Standard Oil Of Kentucky, Inc | | Oil Operator | Dec 2022 |
| 445 | Stanoco Oil Co | Central City, KY 42330 | Oil & Gas Operator | Dec 2021 |
| 446 | Status Oil Well, Inc. | Charlotte, NC 28270 | Oil & Gas Operator | Dec 2009 |
| 447 | Steinwachs SR, James M | Robards, KY 42452 | Oil Operator | Dec 2022 |
| 448 | Steve Burchett Oil Co | | Oil Operator | Dec 2022 |
| 449 | Stevens, Dale E | Grayson, KY 41143 | Oil Operator | Dec 2022 |
| 450 | Stinson, Ernest Dba Logsdon Valley Oil | Horse Cave, KY 42749 | Oil Operator | Dec 2021 |
| 451 | Storm Burchett Dba Storm Resources, LLC | Albany, KY 42602 | Oil Operator | Dec 2022 |
| 452 | Stouder DRLG Co | | Oil & Gas Operator | Dec 2022 |
| 453 | Sun Exploration Co, Inc | | Oil Operator | Dec 2009 |
| 454 | Sun Oil Company | Arlington, TX 76006 | Oil & Gas Operator | Dec 2021 |
| 455 | Sunset Energy L L C | Palm Harbor, FL 34683-3044 | Oil Operator | Dec 2007 |
| 456 | Sunshine Oil & Gas, LLC | Madisonville, KY 42431 | Oil & Gas Operator | Dec 2022 |
| 457 | Swo & Ism, LLC | | Oil & Gas Operator | Dec 2021 |
| 458 | T & T Contracting Dba Hulman Contracting, LLC | Rockfield, KY 42274 | Oil Operator | Dec 2022 |
| 459 | Tabor, Danny | Scottsville, KY 42164 | Oil Operator | Dec 2022 |
| 460 | Tackett & Sons DRLG Contractors, Inc | Salyersville, , K 41465 | Oil & Gas Operator | Dec 2022 |
| 461 | Talbott, WM G | Albany, KY 42602 | Oil Operator | Dec 2022 |
| 462 | Tallent, Edwin Miller | Albany, KY 42602 | Oil Operator | Dec 2021 |
| 463 | Tamarack Pet Co, Inc | | Oil Operator | Dec 2020 |
| 464 | Target Oil & Gas Corp | | Oil & Gas Operator | Dec 2013 |
| 465 | Tartan Oil Co | Carmi, IL 62821 | Oil & Gas Operator | Dec 2022 |
| 466 | Tarter Bros | Dunnville, KY 42528 | Oil Operator | Dec 2022 |
| 467 | Tarter, David | Dunnville, KY 45528 | Gas Operator | Dec 2022 |
| 468 | Tarter, Kenneth & Cheryl | Columbia, KY 42728 | Oil Operator | Dec 2022 |
| 469 | Tdoc, Inc | Evansville, IN 47716 | Oil Operator | Dec 2022 |
| 470 | Tennessee Properties, Inc | | Oil Operator | Dec 2013 |
| 471 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 472 | Texas Gas Transmission LLC | Owensboro, KY 42301 | Oil & Gas Operator | Dec 2024 |
| 473 | The Inland Gas Co, Inc | | Oil Operator | Dec 2022 |
| 474 | The Texas Company | FT Worth, TX 76101 | Oil & Gas Operator | Dec 2013 |
| 475 | Tops Oil & Gas, LLC | Owensboro, KY 42303 | Oil Operator | Dec 2022 |
| 476 | Travell Energy, Inc | | Oil Operator | Dec 2009 |
| 477 | Trey Exploration, Inc. | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2020 |
| 478 | Triad Hunter, LLC | Spring, TX 77389 | Oil & Gas Operator | Dec 2021 |
| 479 | Triad Resources Inc | Spring, TX 77389 | Oil & Gas Operator | Dec 2020 |
| 480 | Trico Energy LLC | Hager Hill, KY 41222 | Oil Operator | Dec 2018 |
| 481 | Trico/Tiger Development LLC | | Gas Operator | Dec 2017 |
| 482 | Trinity Group LLC | | Oil Operator | Dec 1997 |
| 483 | Tug Fork Development | Catlettsburg, KY 41129 | Gas Operator | Dec 2021 |
| 484 | Uae Investco 1 (Estill), LLC | Ravenna, KY 40472 | Oil Operator | Dec 2022 |
| 485 | Uae Investco 2 (Lee), LLC | Ravenna, KY 40472 | Oil Operator | Dec 2021 |
| 486 | Union Operating Corp | Lakewoord, CO 80215 | Oil Operator | Dec 2022 |
| 487 | Union Petro Inc | Uniontown, KY 42461 | Oil Operator | Dec 2022 |
| 488 | United Fuel Gas Co | | Oil & Gas Operator | Dec 2022 |
| 489 | United Well Completion, Inc | Corbin, KY 40701 | Oil & Gas Operator | Dec 2022 |
| 490 | Universal Operating, Inc | Evansville, IN 47715 | Oil & Gas Operator | Dec 2022 |
| 491 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2022 |
| 492 | V-T DRLG Co | | Oil Operator | Dec 2022 |
| 493 | Van Lingen, Peter | Nashville, TN 37215 | Oil Operator | Dec 2022 |
| 494 | Vandiver, Tony E | Island, KY 42350 | Oil Operator | Dec 2022 |
| 495 | Viking Exploration, LLC | Mousie, KY 41839 | Oil & Gas Operator | Dec 2009 |
| 496 | Viking Oil & Gas, LLC | Caneyville, KY 42721 | Oil & Gas Operator | Dec 2022 |
| 497 | Vinland Energy Operations, LLC | Lexington, KY 40509 | Oil & Gas Operator | Dec 2022 |
| 498 | Vogler, John F | Greenville, KY 42345 | Oil Operator | Dec 2022 |
| 499 | W W Pet Service, Inc | Dixon, KY 42409 | Oil & Gas Operator | Dec 2022 |
| 500 | Walker Resources Co, LLC | | Oil & Gas Operator | Dec 2013 |