| Terry, H. L. Unit G-3-146621 | Union Pacific Resources Company | Giddings (Austin Chalk, Gas) | Brazos | 1 | 215K | 2.05M | Jul 1993 – Aug 1999 |
| Allen G-3-145818 | Union Pacific Resources Company | Giddings (Austin Chalk, Gas) | Brazos | 1 | 188K | 1.3M | May 1993 – Aug 1999 |
| McCullough-McCullough 'A' G-3-145083 | Union Pacific Resources Company | Giddings (Austin Chalk, Gas) | Brazos | 1 | 187K | 1.49M | Jan 1993 – Feb 2000 |
| Brazos Coal Ltd.-Terry "B" Unit G-3-146180 | Union Pacific Resources Company | Giddings (Austin Chalk, Gas) | Brazos | 1 | 134K | 915K | Jun 1993 – Aug 1999 |
| Grant O-3-23533 | Union Pacific Resources Company | Giddings (Buda) | Brazos | 1 | 77K | 90.7K | Sep 1997 – Sep 1998 |
| Bukowski-Bienski Unit O-3-21384 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 57.5K | 262K | Jan 1993 – Jun 2000 |
| Scott-Ruesink Unit O-3-21182 | Union Pacific Resources Company | Kurten (Buda) | Brazos | 1 | 56.6K | 57.7K | Jan 1993 – Aug 1997 |
| Oliver F. Goen Unit O-3-21675 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 53.3K | 359K | Jan 1993 – Jul 1998 |
| Horned Frog O-3-20900 | Union Pacific Resources Company | Kurten (Buda) | Brazos | 2 | 43.5K | 95.9K | Jan 1993 – Apr 1996 |
| Woodyard-Cargill Unit O-3-22284 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 43K | 104K | Oct 1993 – Dec 1995 |
| Jones-Jones Unit O-3-21524 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 42.4K | 259K | Jan 1993 – Feb 1998 |
| Weedon-Weedon "B" Unit O-3-21918 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 40.2K | 160K | Jan 1993 – Dec 1996 |
| Lenz Unit O-3-21475 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 33.1K | 270K | Jan 1993 – Aug 1999 |
| Stetz-Rancho Grande Unit O-3-21986 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 28.3K | 187K | Mar 1993 – Nov 1999 |
| Carroll-Beiring Unit O-3-21156 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 24.5K | 114K | Jan 1993 – Sep 1996 |
| Salpetro-Penicka Unit O-3-22421 | Union Pacific Resources Company | Giddings (Buda) | Brazos | 1 | 24.4K | 37.8K | May 1994 – Apr 1996 |
| Luedecke-Davros Unit O-3-22451 | Union Pacific Resources Company | Giddings (Buda) | Brazos | 1 | 23.9K | 62.4K | Jan 1994 – Oct 1994 |
| Bush-Stetz Unit O-3-21694 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 23.7K | 206K | Jan 1993 – Feb 2000 |
| Risinger-Cooke Unit O-3-21796 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 23.6K | 31.6K | Jan 1993 – Sep 1994 |
| J. E. Weedon Unit O-3-21257 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 22.1K | 88.8K | Jan 1993 – Apr 1998 |
| Dansby-Dansby Unit O-3-21478 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 20.4K | 127K | Jan 1993 – Dec 1994 |
| Bvi-Little Unit O-3-21866 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 20.3K | 25.7K | Jan 1993 – Mar 1997 |
| College Hills Unit O-3-21673 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 17.5K | 130K | Jan 1993 – Jul 1995 |
| Waltman-Chance Farms Unit G-3-144378 | Union Pacific Resources Company | Giddings (Austin Chalk, Gas) | Brazos | 1 | 17.3K | 89K | Jan 1993 – Feb 1997 |
| Carroll-Peters Unit O-3-21302 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 15.6K | 102K | Jan 1993 – Sep 1996 |
| Yellow Rose Unit O-3-23208 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 14.1K | 3.98K | Mar 1997 – Sep 1997 |
| Peters-Wheeler Unit O-3-21626 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 13.7K | 69.2K | Jan 1993 – Feb 1996 |
| Deerfield Unit G-3-159510 | Union Pacific Resources Company | Kurten (Georgetown) | Brazos | 1 | 12.5K | 401K | Jul 1996 – May 1998 |
| Jones-Foster Unit O-3-22184 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 11.7K | 66.2K | Mar 1993 – Dec 1993 |
| Kurz O-3-21297 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 10.8K | 19.7K | Jan 1993 – Jan 1997 |
| Risinger-Freeman Unit O-3-21787 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 8.89K | 16.4K | Jan 1993 – Jan 1995 |
| Salpetro-Penicka Unit O-3-21175 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 7.97K | 26.8K | Jan 1993 – Mar 1994 |
| Emola Unit O-3-17456 | Union Pacific Resources Company | Kurten (Buda) | Brazos | 1 | 7.7K | 3.85K | Jan 1993 – Aug 1995 |
| Ruffino P. "B" O-3-21734 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 6.08K | 4.46K | Jan 1993 – Dec 1995 |
| Jones-Walker Unit O-3-21592 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 5.71K | 60.7K | Jan 1993 – Jun 1994 |
| Bienski-Porterfield Unit O-3-21908 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 5.58K | 24K | Jan 1993 – Sep 1993 |
| Olden-Paull Unit G-3-144379 | Union Pacific Resources Company | Giddings (Georgetown, Gas) | Brazos | 1 | 4.81K | 100K | Jan 1993 – Mar 1993 |
| Ruffino, P. Jr. "C" O-3-17182 | Union Pacific Resources Company | Kurten (Buda) | Brazos | 1 | 3.96K | 4.17K | Jan 1993 – Aug 1995 |
| Ruffino, P. III "D" O-3-17513 | Union Pacific Resources Company | Kurten (Buda) | Brazos | 1 | 3.49K | 987 | Jan 1993 – Jul 1995 |
| Gig'em O-3-21407 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 3.26K | 27.7K | Jan 1993 – Oct 1993 |
| Startown 'A'unit O-3-21582 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 3.01K | 21K | Jan 1993 – Aug 1993 |
| Grant, P.M. O-3-16415 | Union Pacific Resources Company | Kurten (Buda) | Brazos | 1 | 2.31K | 2.51K | Jan 1993 – Jul 1993 |
| Britten Ranch O-3-21353 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 1.63K | 4K | Jan 1993 – Aug 1993 |
| Dudake, Paul L. Unit O-3-16594 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 1.5K | 13 | Jan 1993 – Jan 1994 |
| Frame Unit I O-3-21877 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 1.04K | 2.13K | Jan 1993 – Jun 1994 |
| Dansby-Davis Unit O-3-18116 | Union Pacific Resources Company | Kurten (Buda) | Brazos | 1 | 981 | 7 | Jan 1993 – Aug 1993 |
| Scott, J. A. O-3-21628 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 625 | 376 | Jan 1993 – Oct 1994 |
| Patranella, Chas. "B" O-3-16835 | Union Pacific Resources Company | Kurten (Buda) | Brazos | 1 | 521 | 4.98K | Jan 1993 – Sep 1993 |
| Callie O-3-17880 | Union Pacific Resources Company | Kurten (Buda) | Brazos | 1 | 410 | 314 | Jan 1993 – Apr 1993 |
| Dalio O-3-16246 | Union Pacific Resources Company | Kurten (Buda) | Brazos | 1 | 86 | 463 | Jan 1993 – Aug 1993 |