| 1501 | DWP Oil & Gas | Wichita Falls, TX 76309 | Oil & Gas Operator | Sep 2026 |
| 1502 | Dyad Petroleum Company | Midland, TX 79710 | Oil & Gas Operator | Sep 2021 |
| 1503 | Dyco Petroleum Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 1504 | Dye Walter M | Woodsfield, OH 43793 | Oil & Gas Operator | Dec 2022 |
| 1505 | Dye, Jennifer J. | South Dayton, NY 14138 | Gas Operator | Dec 2025 |
| 1506 | Dyer Dale E Dba The Loving Company | Tulsa, OK 74107 | Oil & Gas Operator | Jun 2026 |
| 1507 | Dyer J G | | Oil & Gas Operator | May 1985 |
| 1508 | Dyer Oil & Gas Group LLC | Tulsa, OK 74137 | Oil Operator | May 2026 |
| 1509 | Dyer, Charles Wilbur | Longton, KS 67352 | Oil Operator | Jul 2025 |
| 1510 | Dyersdale Energy, L.P. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 1511 | Dyersdale Production Co, Inc. | Houston, TX 77019 | Oil & Gas Operator | Sep 2026 |
| 1512 | Dykes Oil Co. | | Oil Operator | Dec 2001 |
| 1513 | Dym Energy, Inc. | Celina, TX 75009 | Oil & Gas Operator | Apr 2018 |
| 1514 | Dynaco, Incorporated | | Oil & Gas Operator | Dec 1980 |
| 1515 | Dynamic Development Inc | | Oil & Gas Operator | Jun 2026 |
| 1516 | Dynamic Exploration PTRS, LLC | | Oil & Gas Operator | Nov 2024 |
| 1517 | Dynamic Exploration, Inc. | | Oil & Gas Operator | Oct 2003 |
| 1518 | Dynamic Offshore Res. NS, LLC | Houston, TX 77010 | Oil & Gas Operator | May 2010 |
| 1519 | Dynamic Offshore Resources, LLC | Houston, TX 77042 | Oil & Gas Operator | Sep 2026 |
| 1520 | Dynamic Petroleum Res., Inc. | Houston, TX 77068 | Oil & Gas Operator | Jul 1994 |
| 1521 | Dynamic Production, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2026 |
| 1522 | Dyne Exploration Company | Plano, TX 75093-6512 | Oil & Gas Operator | Apr 2020 |
| 1523 | Dyne Oil & Gas,Inc. | Borger, TX 79008 | Oil & Gas Operator | Dec 2017 |
| 1524 | Dyno Energy LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | May 2026 |
| 1525 | Dyson Energy Operating, LLC | Bryan, TX 77802 | Oil & Gas Operator | Jun 2018 |
| 1526 | Dzurik Interests, Inc. | | Oil & Gas Operator | Dec 2024 |