| 1 | A & A Discovery, Inc | Hill City, KS 67642 | Oil Operator | Aug 2002 |
| 2 | A & A Discovery, LLC | Hill City, KS 67642 | Oil Operator | May 2018 |
| 3 | A & A Oil Company | Luling, TX 78648 | Oil & Gas Operator | Oct 2009 |
| 4 | A & A Producers & Operators/Energy Prop. | | Oil & Gas Operator | Dec 1996 |
| 5 | A & A Production | | Oil Operator | Feb 2013 |
| 6 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | Aug 2025 |
| 7 | A & A Well Service | Kincaid, KS 66039 | Oil Operator | Jun 2025 |
| 8 | A & B Minerals | Scotland, TX 76379 | Oil & Gas Operator | Sep 2020 |
| 9 | A & B Oil | Monahans, TX 79756 | Oil & Gas Operator | Nov 2025 |
| 10 | A & B Oil & Gas Properties Inc | Sapulpa, OK 74067-0217 | Oil & Gas Operator | Apr 2011 |
| 11 | A & B Oil Company | Monahans, TX 79756 | Oil & Gas Operator | Apr 2015 |
| 12 | A & B Well Service Inc. | Amarillo, TX 79159 | Oil & Gas Operator | Nov 2006 |
| 13 | A & C Gas Productions, Inc. | | Gas Operator | Mar 2012 |
| 14 | A & C Oil Company, LLC | Stockdale, TX 78160 | Oil Operator | Nov 2025 |
| 15 | A & D Exploration Company | Rockport, TX 78381 | Oil & Gas Operator | Nov 2025 |
| 16 | A & E Minerals, LLC | Shreveport, LA 71104 | Oil & Gas Operator | Nov 2025 |
| 17 | A & F Oil Company | | Oil & Gas Operator | Jan 2025 |
| 18 | A & F Production Company | | Oil Operator | Jan 2025 |
| 19 | A & G Oil & Gas | Shelby, MT 59474 | Oil & Gas Operator | Jul 2011 |
| 20 | A & G Oil Company | Chanute, KS 66720 | Oil Operator | Sep 1999 |
| 21 | A & G Oil Company, LLC | Barstow, TX 79719 | Oil & Gas Operator | Feb 2012 |
| 22 | A & G Producers, Inc. | Barstow, TX 79719 | Oil & Gas Operator | Nov 2025 |
| 23 | A & H Disposal Inc | Lindsay, OK 73052-0456 | Oil & Gas Operator | Jul 2019 |
| 24 | A & I Properties Inc | Oklahoma City, OK 73107 | Gas Operator | Jun 2007 |
| 25 | A & J Oil Compan | | Oil & Gas Operator | Dec 1994 |
| 26 | A & L Energy Operations LLC | New York, NY 10022 | Oil Operator | Sep 2013 |
| 27 | A & P Oil & Gas | Leona, TX 75850 | Oil Operator | Nov 2025 |
| 28 | A & R Energy Inc | Pittsburgh, PA 15244 | Oil & Gas Operator | Dec 2013 |
| 29 | A & R Oil & Gas Of Monroe & Washington Counties LLC | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2024 |
| 30 | A & S Prod Inc | Endeavor, PA 16322-0189 | Oil & Gas Operator | Dec 2024 |
| 31 | A & T Oil Company | Midland, TX 79707 | Oil & Gas Operator | Sep 2008 |
| 32 | A & T Production Company | Wheat Ridge, CO 80034-1048 | Oil & Gas Operator | Jun 2009 |
| 33 | A & W Operating Inc | Drumright, OK 74030-5789 | Oil & Gas Operator | Mar 2015 |
| 34 | A - Z Operating LLC | Winters, TX 79567 | Oil Operator | Nov 2025 |
| 35 | A A Company | | Gas Operator | Jun 2005 |
| 36 | A A Production Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 1998 |
| 37 | A Berry Enterprises LLC | Freeport, OH 43973 | Oil & Gas Operator | Dec 2024 |
| 38 | A C Operating Co. | Bangs, TX 76823 | Oil & Gas Operator | Mar 2008 |
| 39 | A D D Productions | Sweetwater, TX 79556 | Oil & Gas Operator | Jul 2019 |
| 40 | A E G Oil, Inc. | Hale Center, TX 79041 | Oil & Gas Operator | Nov 2025 |
| 41 | A E W Inc | Okmulgee, OK 74447-0267 | Oil & Gas Operator | Mar 2015 |
| 42 | A H & L Operating Company Inc | Norman, OK 73070-4084 | Oil & Gas Operator | Apr 2015 |
| 43 | A J & A, Inc. | | Gas Operator | Feb 2009 |
| 44 | A J A Companies | Tyler, TX 75703 | Oil Operator | Nov 2025 |
| 45 | A J Acid Inc | Blackwell, OK 74631-0758 | Oil & Gas Operator | Dec 2012 |
| 46 | A J Ferguson | | Oil Operator | Apr 1988 |
| 47 | A J Myers Prod. LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2025 |
| 48 | A J Oil And Gas | Oilton, OK 74052-0112 | Oil & Gas Operator | Jun 2012 |
| 49 | A J S Oil Corporation | Oklahoma City, OK 73112-4799 | Oil & Gas Operator | Jul 2004 |
| 50 | A K Holdings Inc | Scottsdale, AZ 85254 | Oil & Gas Operator | Mar 2011 |
| 51 | A L Jones Revocable Trust | Wilson, OK 73463-7316 | Oil Operator | Jul 2013 |
| 52 | A Miller Oil Company | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2024 |
| 53 | A N R Pipeline Co | | Oil & Gas Operator | Jan 2025 |
| 54 | A N R Storage Company | | Oil & Gas Operator | Oct 2016 |
| 55 | A P S, Inc. | Hays, KS 67601 | Oil Operator | Mar 2024 |
| 56 | A P X Corporatio | | Oil & Gas Operator | Nov 1992 |
| 57 | A Producing Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 1992 |
| 58 | A R & R Limited | | Oil & Gas Operator | Jul 1993 |
| 59 | A R W Exploration Corp | Stillwater, OK 74076 | Oil & Gas Operator | May 2013 |
| 60 | A S B Oil & Gas Exploration LLC | Sand Springs, OK 74063-1508 | Oil & Gas Operator | Nov 2021 |
| 61 | A S Energy | Tiffin, OH 44883 | Oil & Gas Operator | Dec 2001 |
| 62 | A S N F Producing Inc | N. Canton, OH 44720 | Oil & Gas Operator | Dec 2013 |
| 63 | A T M Corporation | Mathis, TX 78368 | Oil & Gas Operator | Oct 2002 |
| 64 | A T Oil | Bartlesville, OK 74003 | Oil Operator | Mar 1996 |
| 65 | A V Company | Burton, WV 26562-0000 | Gas Operator | Dec 2021 |
| 66 | A W Yenne Trust No 2 | Wooster, OH 44691 | Oil & Gas Operator | Dec 2018 |
| 67 | A X & P Incorpor | | Oil Operator | Sep 1996 |
| 68 | A X & P, Inc. | Independence, KS 67301 | Oil & Gas Operator | Jul 2015 |
| 69 | A&K Production LLC Of Texas | | Oil & Gas Operator | Nov 2024 |
| 70 | A&M Oil & Gas LLC | Kermit, TX 79745 | Oil & Gas Operator | Nov 2025 |
| 71 | A&S Mineral Development Company, LLC | Poplar, MT 59255 | Oil & Gas Operator | Aug 2025 |
| 72 | A-1 Oil Operators | Beggs, OK 74421-0329 | Oil & Gas Operator | Jan 2013 |
| 73 | A-1 Well Service | Coffeyville, KS 67337-9578 | Oil & Gas Operator | Mar 2021 |
| 74 | A-E Operating Committee | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 1996 |
| 75 | A-G-B, Inc. | Houston, TX 77084 | Oil & Gas Operator | Aug 2003 |
| 76 | A-W Wellman Limited | East Sparta, OH 44626 | Oil & Gas Operator | Dec 2001 |
| 77 | A. B. Energy LLC | Chester, MT 59522 | Oil & Gas Operator | Aug 2025 |
| 78 | A. Bauer, LLC | Red Rock, TX 78662 | Oil Operator | Nov 2025 |
| 79 | A. Francis Vonfeldt Co. | | Oil Operator | Nov 2019 |
| 80 | A. J. Hayes | | Oil & Gas Operator | Dec 1998 |
| 81 | A. J. Hodges, Ind. Inc Et Al | | Oil & Gas Operator | Jan 1979 |
| 82 | A. L. & V. I. Grayson | | Oil Operator | Dec 1993 |
| 83 | A. L. Coon | | Oil Operator | May 1979 |
| 84 | A. M. A. Chiles | | Oil & Gas Operator | Jan 2025 |
| 85 | A. Michael Hyde Oil & Gas Co. | | Oil & Gas Operator | Jan 1989 |
| 86 | A. P. B. Petro | Winters, TX 79567 | Oil & Gas Operator | Oct 2005 |
| 87 | A. R. & R., LTD. | Bartlesville, OK 74006 | Oil & Gas Operator | Jun 2025 |
| 88 | A. R. Wherrett Trustees | | Oil Operator | Jan 1987 |
| 89 | A. S. Johnston Drilling Corp. | | Oil & Gas Operator | Dec 1987 |
| 90 | A. Scott Ritchie | | Oil Operator | Mar 1985 |
| 91 | A. T. Teague, Jr. | | Oil Operator | Aug 1993 |
| 92 | A. W. Sour, Jr. | | Oil Operator | Mar 2003 |
| 93 | A.A.F. Production Co., Inc. | Abilene, TX 79606 | Oil & Gas Operator | Dec 1997 |
| 94 | A.C.T. Operating Company | Lubbock, TX 79401 | Oil & Gas Operator | Nov 2025 |
| 95 | A.D. Operating | Graham, TX 76450 | Oil & Gas Operator | Nov 2025 |
| 96 | A.D.A. Oil Co | Iowa Park, TX 76367 | Oil Operator | Aug 2003 |
| 97 | A.D.C.O. Well Services Inc. | Waterloo, NY 13165 | Gas Operator | Dec 2024 |
| 98 | A.D.I.D. Corporation | Emlyn, KY 40730 | Oil & Gas Operator | Dec 2019 |
| 99 | A.D.S. Resources, Inc. | Lubbock, TX 79413 | Oil & Gas Operator | Jul 2008 |
| 100 | A.E.N. Energy | Abilene, TX 79608 | Oil & Gas Operator | Feb 2005 |