| 7701 | Delphi Oil And Gas LLC | Macomb, OK 74852 | Oil Operator | Aug 2024 |
| 7702 | Delphi Oil, Inc. | Delphi, IN 46923 | Oil & Gas Operator | Jun 2024 |
| 7703 | Delray Oil, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Nov 2024 |
| 7704 | Delta C02, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2021 |
| 7705 | Delta D Operations | Wilson, OK 73463 | Oil & Gas Operator | Jul 2014 |
| 7706 | Delta D Operations Inc | Ardmore, OK 73401-8678 | Oil & Gas Operator | Apr 2014 |
| 7707 | Delta Development Co. Inc. | | Oil & Gas Operator | Dec 1988 |
| 7708 | Delta Energy Resources, Inc. | | Oil & Gas Operator | Jun 1990 |
| 7709 | Delta Expl.& Development Corp. | | Oil & Gas Operator | Jul 2024 |
| 7710 | Delta Exploration Company Inc | Denver, CO 80202 | Oil & Gas Operator | Nov 2024 |
| 7711 | Delta Exploration, LLC | Fredericksbrg, TX 78624 | Oil Operator | Nov 2024 |
| 7712 | Delta Oil | Holliday, TX 76366 | Oil & Gas Operator | Sep 2005 |
| 7713 | Delta Oil & Gas Company | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2003 |
| 7714 | Delta Oil & Gas LTD. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 7715 | Delta Oil Co Inc | | Oil & Gas Operator | Oct 2023 |
| 7716 | Delta Oil Co Inc And Great Lakes Niagaran | | Oil & Gas Operator | Dec 1987 |
| 7717 | Delta Operating Company | | Oil Operator | Mar 1987 |
| 7718 | Delta Operating Corporation | | Oil & Gas Operator | Feb 2024 |
| 7719 | Delta Petro Corp Of Colorado | Houston, TX 77010-3089 | Gas Operator | Dec 2003 |
| 7720 | Delta Petroleum Company | Houston, TX 77267 | Oil Operator | Aug 1996 |
| 7721 | Delta Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 7722 | Delta Petroleum Corp Of Co | | Oil & Gas Operator | Oct 2010 |
| 7723 | Delta Petroleum Inc | Houston, TX 77269-1007 | Oil & Gas Operator | May 2009 |
| 7724 | Delta Producers, Inc | Greenville, MS 38703 | Oil & Gas Operator | Dec 2017 |
| 7725 | Delta Production Services, LLC | | Oil & Gas Operator | Aug 2002 |
| 7726 | Delta Royalties LLC | | Oil & Gas Operator | Jun 2024 |
| 7727 | Delta Sierra Oil & Gas LLC | | Gas Operator | Jan 2018 |
| 7728 | Deltaus Corporation | | Oil & Gas Operator | Oct 1985 |
| 7729 | Deltex Minerals Inc. | Peachtree Cty, GA 30269 | Oil & Gas Operator | Nov 2024 |
| 7730 | Deltex Petroleum | | Oil Operator | Nov 1994 |
| 7731 | Delwintex Oil & Gas Prop., Inc. | Lubbock, TX 79423 | Oil & Gas Operator | Aug 2003 |
| 7732 | Dem Operations Inc | Lamont, OK 74643-5010 | Oil & Gas Operator | Sep 2024 |
| 7733 | Demambro, Gene Brian | Mayville, NY 14757 | Gas Operator | Dec 2023 |
| 7734 | Demand Energy, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jul 1999 |
| 7735 | Demco Oil & Gas Company | Blackwell, OK 74631-4203 | Oil & Gas Operator | Aug 2024 |
| 7736 | Demers - Fleming | Wichita Falls, TX 76305 | Oil & Gas Operator | Mar 2008 |
| 7737 | Demers Oil Production | Byers, TX 76357 | Oil & Gas Operator | Apr 2002 |
| 7738 | Demier Oil Company | Tulsa, OK 74105-2128 | Oil & Gas Operator | Nov 2008 |
| 7739 | Deminex U.S. Oil Company | | Oil & Gas Operator | Jan 1998 |
| 7740 | Demiran Production, Inc. | | Oil Operator | Mar 2008 |
| 7741 | Demo Oil Co | | Oil Operator | Jan 2020 |
| 7742 | Demoss, L. V. | Graham, TX 76450 | Oil & Gas Operator | May 2004 |
| 7743 | Dempsey & Rowe | | Oil Operator | Aug 1986 |
| 7744 | Dempsey, Wayne L | | Oil & Gas Operator | Mar 2011 |
| 7745 | Den Cal, Inc. | Borger, TX 79007 | Oil & Gas Operator | Nov 2024 |
| 7746 | Den-Kay Corp. | Plano, TX 75074 | Oil Operator | Aug 2009 |
| 7747 | Denali Exploration, Inc. | Amarillo, TX 79109 | Oil & Gas Operator | Nov 2018 |
| 7748 | Denali Oil & Gas Management, LLC | Houston, TX 77060 | Oil & Gas Operator | Dec 2012 |
| 7749 | Denali Petroleum, LLC | Arlington, TX 76006 | Oil Operator | Mar 2021 |
| 7750 | Denbury Management, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Dec 1999 |
| 7751 | Denbury Offshore, Inc. | | Oil & Gas Operator | Nov 2004 |
| 7752 | Denbury Onshore, LLC | Plano, TX 75024 | Oil & Gas Operator | Nov 2024 |
| 7753 | Denbury Resources Inc. | Plano, TX 75024 | Oil & Gas Operator | Dec 2003 |
| 7754 | Denchfield, Fred | Neal, KS 66863 | Oil Operator | Dec 1997 |
| 7755 | Denell Oil Corporation | Yukon, OK 73085 | Oil & Gas Operator | Jul 1994 |
| 7756 | Denex Petroleum Corp. | Buckhannon, WV 26201 | Oil & Gas Operator | Dec 2021 |
| 7757 | Denex, Inc. | | Oil & Gas Operator | Jul 1983 |
| 7758 | Denham Danny D | Kellyville, OK 74039 | Oil & Gas Operator | Aug 2024 |
| 7759 | Denham Operating Company | Tulsa, OK 74101-3627 | Oil & Gas Operator | Aug 2022 |
| 7760 | Denhart & Denhart | Brownwood, TX 76804 | Oil & Gas Operator | Dec 2001 |
| 7761 | Deni Frank R | | Oil Operator | Dec 2022 |
| 7762 | Denis Roberts Oil | | Oil Operator | Jun 2024 |
| 7763 | Denman J M Oil C | | Oil Operator | Mar 1994 |
| 7764 | Denman-Friesen Co. | Lufkin, TX 75901 | Oil & Gas Operator | Nov 2006 |
| 7765 | Denmark Oil | Wichita, KS 67212 | Oil & Gas Operator | May 2000 |
| 7766 | Dennett'S Inc | Enid, OK 73701-1851 | Oil & Gas Operator | Apr 2014 |
| 7767 | Denney Don | Citrus Heights, CA 95611-2473 | Oil Operator | Aug 2023 |
| 7768 | Dennis & Broun | Bullard, TX 75757 | Oil & Gas Operator | Sep 2003 |
| 7769 | Dennis & Davis Oil Co. | Nocona, TX 76255 | Oil & Gas Operator | Nov 2024 |
| 7770 | Dennis & Eckhardt Management, LLC | Oklahoma City, OK 73118 | Gas Operator | Apr 2024 |
| 7771 | Dennis Don Oil Company | Grady, OK 73569-9998 | Oil Operator | Jan 2002 |
| 7772 | Dennis Fitzpatrick Rev. Trust | Sterling, KS 67579 | Gas Operator | Jul 2024 |
| 7773 | Dennis Langlitz | Carlsbad, NM 88220 | Oil Operator | Jul 2009 |
| 7774 | Dennis Lloyd D | Fleming, OH 45729 | Oil & Gas Operator | Dec 2023 |
| 7775 | Dennis Oil & Gas LLC | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2023 |
| 7776 | Dennis, Don | Grady, OK 73545 | Oil & Gas Operator | Mar 1998 |
| 7777 | Dennison George | Tulsa, OK 74112-6732 | Oil & Gas Operator | Apr 2020 |
| 7778 | Denny'S Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Dec 2000 |
| 7779 | Denny, Arthur Gene | Independence, KS 67301 | Oil Operator | Oct 1996 |
| 7780 | Denoco Inc. | Plano, TX 75086 | Oil & Gas Operator | Mar 2008 |
| 7781 | Denova | | Oil Operator | Jan 1989 |
| 7782 | Denovo Oil & Gas, Inc. | Houston, TX 77210 | Oil & Gas Operator | May 1995 |
| 7783 | Denpac Corporation | Colorado SPGS, CO 80922 | Oil & Gas Operator | Nov 2024 |
| 7784 | Densmore, Winfield F. Densmore, Debra L. | Lakewood, NY 14750 | Gas Operator | Dec 2023 |
| 7785 | Denteco Oil Company LLC | Abilene, TX 79604 | Oil & Gas Operator | Nov 2024 |
| 7786 | Denton Exploration, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Nov 2024 |
| 7787 | Denton Oil & Gas | Argyle, TX 76226 | Oil Operator | Dec 2014 |
| 7788 | Denver Energy Exploration,LLC | Canyon Lake, TX 78133 | Oil Operator | Nov 2024 |
| 7789 | Denveramerican Petro LLC | | Oil & Gas Operator | May 2006 |
| 7790 | Denveramerican Petroleum, A LTD Liability Co | Denver, CO 80203 | Oil & Gas Operator | Sep 1997 |
| 7791 | Department Of Conservation | | Oil Operator | Dec 2005 |
| 7792 | Department Of Energy | Casper, WY 82601 | Oil & Gas Operator | Jan 2015 |
| 7793 | Depco Inc. | Denver, CO 80202 | Oil & Gas Operator | Apr 2014 |
| 7794 | Depco, Inc. & Texas Pacific Oil Co. | | Oil Operator | Jul 1995 |
| 7795 | Depew Union Free School District | Depew, NY 14043 | Gas Operator | Dec 2023 |
| 7796 | Depriest, Howard Joseph & Susan M. | East Aurora, NY 14052 | Gas Operator | Dec 2023 |
| 7797 | Depuy Drilling Co | Marietta, OH 45750 | Oil & Gas Operator | Dec 2023 |
| 7798 | Derae Oil Company | Seminole, OK 74868-2617 | Oil & Gas Operator | Feb 1997 |
| 7799 | Deran Resources, Inc. | Spencer, WV 25276 | Oil & Gas Operator | Dec 2021 |
| 7800 | Derby Exploration LLC | Okc, OK 73102 | Oil & Gas Operator | Sep 2024 |