| Company | NEPTUNE DRILLING PROGRAM 1979-B, LTD. |
| Business Number | 690389 |
| Company | CONTINENTAL-AMERICAN DRILLING PROGRAM 1980-A, LTD. |
| Business Number | 690387 |
| Company | NEPTUNE DRILLING PROGRAM 1979-A, LTD. |
| Business Number | 690390 |
| Company | AMPET DRILLING PROGRAM 1980-B, LTD. |
| Business Number | 683571 |