API-Delta Past Chairmen
| Year | Name | Company | Phone | Fax |
| 2006 | Carlos Guzman | |||
| 2005 | Leo Kerner | |||
| 2004 | Richard Tucker | |||
| 2003 | Michael del Papa | |||
| 2002 | Dwight Paulsen | |||
| 2001 | Benjamin J. Waring | Waring and Associates | 733-3117 | 733-6040 |
| 2000 | Bart Walker | The William G. Helis Company | 523-1831 | 522-6486 |
| 1999 | Don Sustendal | Amoco Production Company | 586-2771 | 586-5914 |
| 1998 | Sandy Andrews | TDC Energy Corporation | - | - |
| 1997 | Andrew Thomas | Andrew Thomas & Assoc. | 216-360-9485 | 216-360-9486 |
| 1996 | Ken Becker | Texaco, Inc. | - | - |
| 1995 | Jim Rike | Rike Service, Inc | 827-0161 | 822-7599 |
| 1994 | Phil Moses | Mobil | 566-5323 | 566-5625 |
| 1993 | Gerry Authement | Baker Hughes INTEQ | 561-7965 | 566-7240 |
| 1992 | Bubba Hale | Baroid | 524-8282 | 521-8030 |
| 1991 | Paul Loveless | Oil & Gas Property Eval. & Management, Inc. (Covington, LA) | 898-3591 | 898-3598 |
| 1990 | Cheryl Collarini | Collarini Engineering | 522-9077 | 522-9097 |
| 1989 | Bob Vaughn | Ocean Steamship Agency, Inc. (Metairie, LA) | 841-5175 | 841-5151 |
| 1988 | Fred Pontesso | Mobil | 566-5927 | 566-5788 |
| 1987 | Donald Edmonston | Chevron Chemical Bell Chasse, LA | 394-4320 | 391-6358 |
| 1986 | Lloyd Toal | Collarini Engineering | Out of Country | - |
| 1985 | Cheryl Collarini | Collarini Engineering | 522-9077 | 522-9097 |
| 1984 | Bob Decker | Baroid | 524-8282 | 521-8030 |
| 1983 | Bob Decker | Baroid | 524-8282 | 521-8030 |
| 1983 | Charles Chadwick | Exxon | Houston | - |
| 1982 | Bill Leach | Texaco | retired | - |
| 1981 | Bill Leach | Texaco | retired | - |
| 1981 | Pat Riley | CNG | 593-7000 | 593-7338 |
| 1980 | Bill Waggoner | Baroid (Consultant) | 524-8282 | 521-8030 |
| 1979 | Curtis Lemons | Conoco | retired | - |
| 1978 | Willard Bauman | Gulf Oil | retired | - |