| 1701 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2025 |
| 1702 | Devon Gas Services, L.P. | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2023 |
| 1703 | Devon Louisiana Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2019 |
| 1704 | Devon Resources Corporation | Jenks, OK 74037-3525 | Oil & Gas Operator | Dec 2024 |
| 1705 | Devon SFS Operating Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 1706 | Dewey Energy GP LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2022 |
| 1707 | Dewey Enterprises Inc | | Oil & Gas Operator | Dec 2024 |
| 1708 | Dexxon, Inc. | Kiefer, OK 74041 | Oil & Gas Operator | Dec 2024 |
| 1709 | DFP Oil Company | Tulsa, OK 74114-1345 | Oil & Gas Operator | Dec 2004 |
| 1710 | Di Energy Inc. | Houston, TX 77067 | Oil & Gas Operator | Jan 2004 |
| 1711 | Diamond A Inc. | Tulsa, OK 74137 | Oil & Gas Operator | Jun 2001 |
| 1712 | Diamond B Company Inc | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2010 |
| 1713 | Diamond Cross Oil Co LLC | Ponca City, OK 74601-1104 | Oil & Gas Operator | Dec 2024 |
| 1714 | Diamond E Oil Company LLC | Hominy, OK 74035-0676 | Oil Operator | Dec 2024 |
| 1715 | Diamond Energy Operating Company | Tulsa, OK 74137 | Oil & Gas Operator | Mar 2005 |
| 1716 | Diamond Energy Partners LLC | Collinsville, OK 74021 | Oil & Gas Operator | Dec 2024 |
| 1717 | Diamond Energy Services LLC | Tulsa, OK 74103-3862 | Oil & Gas Operator | Jan 2016 |
| 1718 | Diamond Energy, Inc. | Sherman, TX 75091 | Oil & Gas Operator | Mar 2025 |
| 1719 | Diamond Harry H Inc | Shawnee, OK 74801 | Oil & Gas Operator | Aug 2024 |
| 1720 | Diamond Production Company LLC | Irving, TX 75016-7853 | Oil & Gas Operator | Dec 2024 |
| 1721 | Diamond S Gathering Co | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1997 |
| 1722 | Diamondback-Disposal LLC | Oklahoma City, OK 73134-1016 | Oil Operator | Dec 2008 |
| 1723 | Diane Oil Company | Oklahoma City, OK 73146 | Oil & Gas Operator | Jan 2025 |
| 1724 | Diasu Oil & Gas Co., Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2016 |
| 1725 | Dickerson Dennis | Velma, OK 73491 | Oil Operator | Dec 2024 |
| 1726 | Dickerson Oil | Ratliff City, OK 73481 | Oil Operator | Sep 2024 |
| 1727 | Diehl Mark | | Oil Operator | Nov 1998 |
| 1728 | Digger Oil & Gas Inc | Prague, OK 74864 | Oil & Gas Operator | Dec 2024 |
| 1729 | Dildine Oil Well Service | | Oil Operator | Apr 2011 |
| 1730 | Dilley Corp | Yale, OK 74085 | Oil & Gas Operator | May 2013 |
| 1731 | Dillingham Ranch LC | Tulsa, OK 74152 | Oil & Gas Operator | May 2013 |
| 1732 | Dillworth Systems LLC | Ponca City, OK 74601 | Gas Operator | Dec 2020 |
| 1733 | Dimock Petroleum | Dallas, TX 75205 | Oil Operator | Apr 2014 |
| 1734 | Dinero Operating Co | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 1735 | Dinsmore C E | Enid, OK 73702 | Oil & Gas Operator | May 2009 |
| 1736 | Discover Resources | Norman, OK 73070 | Oil & Gas Operator | Jan 2011 |
| 1737 | Discover Resources LLC | Norman, OK 73072-2310 | Oil & Gas Operator | Dec 2024 |
| 1738 | Discovery Energy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2024 |
| 1739 | Discovery Natural Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Mar 2025 |
| 1740 | Discovery Operating Inc | Midland, TX 79705 | Oil & Gas Operator | Mar 2025 |
| 1741 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | Mar 2025 |
| 1742 | Divide Petroleum Co | | Oil & Gas Operator | May 2000 |
| 1743 | Dixie Operating Company | Spring, TX 77379 | Oil & Gas Operator | Dec 2002 |
| 1744 | Dixie Petroleum Inc | Cashion, OK 73016 | Oil & Gas Operator | May 2001 |
| 1745 | Dixon David | Okmulgee, OK 74447-2066 | Oil & Gas Operator | Dec 2024 |
| 1746 | Dixon J C | Okmulgee, OK 74447-8522 | Oil & Gas Operator | Dec 2024 |
| 1747 | Dixon, Bucky | | Oil & Gas Operator | Aug 2016 |
| 1748 | DK Oil Company | Winters, TX 79567 | Oil & Gas Operator | Jul 2022 |
| 1749 | DKT Energy LLC | Edmond, OK 73083-6844 | Oil & Gas Operator | Sep 2014 |
| 1750 | DLB Energy Corporation | Oklahoma City, OK 73118-1401 | Oil & Gas Operator | Dec 2014 |
| 1751 | DLB Oil & Gas, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Mar 2025 |
| 1752 | DLKB Operating LLC | Eufaula, OK 74432 | Gas Operator | Dec 2024 |
| 1753 | DM Petroleum LLC | Duncan, OK 73533 | Oil Operator | Jan 2025 |
| 1754 | DMS Investments Inc | Tulsa, OK 74132-2690 | Oil & Gas Operator | Mar 2015 |
| 1755 | DMS Oil Company | Houston, TX 77042 | Oil & Gas Operator | Jan 2025 |
| 1756 | Dobbins Family Residual Trust | Ardmore, OK 73401 | Oil Operator | Jul 2008 |
| 1757 | Dobson Oil And Gas LLC | Deer Creek, OK 74636-9521 | Oil Operator | Aug 2022 |
| 1758 | Dobson Oil Operators Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Dec 2004 |
| 1759 | Doco Development Corporation | Norman, OK 73072 | Oil & Gas Operator | Jan 2025 |
| 1760 | Dolphin Energy LLC | Lake Worth, FL 33467 | Oil & Gas Operator | Nov 2024 |
| 1761 | Domac Oil Company Inc | Perkins, OK 74059-0642 | Oil & Gas Operator | Feb 2006 |
| 1762 | Domar Oil & Gas, Inc. | Liberal, KS 67905 | Oil & Gas Operator | Oct 2000 |
| 1763 | Dome Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
| 1764 | Dominion Exp Midcontinent Inc | Oklahoma City, OK 73134-2616 | Oil & Gas Operator | Oct 2024 |
| 1765 | Dominion Exploration & Production Inc | Houston, TX 77060 | Oil & Gas Operator | Apr 2015 |
| 1766 | Dominion Ok TX E & P Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2018 |
| 1767 | Don'S Oil Company Inc | Oxford, KS 67119-0006 | Oil Operator | Apr 2011 |
| 1768 | Donaldson Richard E | Bartlesville, OK 74005-0032 | Oil & Gas Operator | Nov 2005 |
| 1769 | Doneghy James | Wellington, TX 79095 | Oil & Gas Operator | May 2013 |
| 1770 | Donovan Joe D Or L P McElwaine | Tulsa, OK 74119 | Gas Operator | Jan 2014 |
| 1771 | Donray Petroleum LLC | Oklahoma City, OK 73112-7230 | Oil & Gas Operator | Dec 2024 |
| 1772 | Donson Corporation | Edmond, OK 73083-0341 | Oil & Gas Operator | Jul 1997 |
| 1773 | Dooley Oil | Cushing, OK 74023 | Oil Operator | Dec 2024 |
| 1774 | Dorado E & P Partners LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2025 |
| 1775 | Dorado Energy LLC | Edmond, OK 73012-0927 | Oil & Gas Operator | Jan 2021 |
| 1776 | Dorado Oil Company | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Dec 2014 |
| 1777 | Dorchester Exploration, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 2001 |
| 1778 | Dorchester Hugoton LTD | Garland, TX 75042-8212 | Oil & Gas Operator | Mar 2004 |
| 1779 | Dorchester Minerals Operating LP | Dallas, TX 75219 | Oil & Gas Operator | Jun 2022 |
| 1780 | Dorey Oil Corporation | Healdton, OK 73438-0856 | Oil Operator | Apr 2014 |
| 1781 | Dorfs Drilling Company | Waurika, OK 73573 | Oil & Gas Operator | Nov 2024 |
| 1782 | Dotson Jack M Operating Co | Norman, OK 73072-6649 | Oil Operator | Oct 1993 |
| 1783 | Double "C" Energy | Coweta, OK 74429 | Oil & Gas Operator | Mar 2015 |
| 1784 | Double "D" Oil Company, Inc. | Winfield, KS 67156 | Oil Operator | Nov 2024 |
| 1785 | Double C Oil & Gas LLC | Jenks, OK 74037-6946 | Oil Operator | Nov 2024 |
| 1786 | Double C Operating LLC | Abilene, TX 79602 | Oil Operator | Mar 2025 |
| 1787 | Double Eagle Oil & Gas Inc | Enid, OK 73702 | Oil & Gas Operator | Jan 2000 |
| 1788 | Double Eagle Petroleum Corp | Evansville, IN 47725 | Oil & Gas Operator | Mar 2025 |
| 1789 | Double G Oil LLC | Bartlesville, OK 74003 | Oil Operator | Dec 2024 |
| 1790 | Double H Petroleum Corporation | Tulsa, OK 74136-5414 | Oil & Gas Operator | May 2006 |
| 1791 | Double J Oil Co LLC | Bristow, OK 74010-9532 | Oil & Gas Operator | Jan 2025 |
| 1792 | Double R Operations | Terral, OK 73569-5021 | Oil Operator | Dec 2014 |
| 1793 | Double R Petroleum | | Oil & Gas Operator | Sep 2004 |
| 1794 | Douglas Fairbanks Holdings LLC | Pine Hurst, TX 77362-9998 | Oil & Gas Operator | Jan 2025 |
| 1795 | Douglas Investments Inc | Fort Worth, TX 76137 | Oil Operator | Jan 2020 |
| 1796 | Douglas Oil & Gas Co Inc | Ada, OK 74820 | Oil Operator | Apr 2014 |
| 1797 | Douglass Dietz & Daley Inc | Oklahoma City, OK 73154-0125 | Oil & Gas Operator | Aug 2023 |
| 1798 | Dove Investments LLC | Wetumka, OK 74883 | Oil Operator | Oct 2024 |
| 1799 | Downhole Oil & Gas Tech LLC | Countyline, OK 73152-0027 | Oil Operator | Oct 2009 |
| 1800 | Draco Production Company | Tulsa, OK 74133 | Oil & Gas Operator | Jul 2012 |