| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | D & D Exploration Co. | Oil & Gas Operator | Nov 1986 | |
| 2 | D & J Producing Company | Oil Operator | Sep 2006 | |
| 3 | Dale Expl Co & R. A. Campbell | Oil Operator | Nov 1995 | |
| 4 | Dale Exploration Company | Oil & Gas Operator | May 2004 | |
| 5 | David New Operating Co., Inc. | Oil & Gas Operator | Feb 1999 | |
| 6 | Davis & Kaiser Operating, Inc. | Oil Operator | May 2004 | |
| 7 | Deblin Operating LTD | Oil & Gas Operator | Jan 1997 | |
| 8 | Decker & Associates | Oil & Gas Operator | Mar 1991 | |
| 9 | Delta Petroleum Corp Of Co | Oil & Gas Operator | Oct 2010 | |
| 10 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 11 | Dixie Operating Company | Spring, TX 77379 | Oil & Gas Operator | Dec 2002 |
| 12 | Domestic Oil Producers,Inc. | Oil Operator | Oct 1998 | |
| 13 | Duer Wagner & Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 1998 |