| McCollum-Belota Unit O-3-21300 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Fayette | 1 | 14.2K | 109K | by Jan 1993 – Apr 1994 |
| Yellow Rose Unit O-3-23208 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 14.1K | 3.98K | Mar 1997 – Sep 1997 |
| Dcrc-Sec. 101F O-4-12530 | Union Pacific Resources Company | Moca (Sand 4, Seg. 6) | Webb | 1 | 13.7K | 16.2K | Oct 1995 – Mar 1997 |
| Peters-Wheeler Unit O-3-21626 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 13.7K | 69.2K | by Jan 1993 – Feb 1996 |
| Eva Marie Unit G-3-170166 | Union Pacific Resources Company | Giddings (Austin Chalk, Gas) | Fayette | 1 | 12.6K | 129K | Feb 1998 – Aug 1999 |
| Temple-Industries 2-H O-6-13323 | Union Pacific Resources Company | Brookeland (Austin Chalk, 8800) | Jasper | 1 | 12.6K | 473K | Jun 1994 – Oct 1999 |
| Slovacek, Rayfield O-3-13639 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Burleson | 1 | 12.5K | 33.5K | by Jan 1993 – Sep 1994 |
| Deerfield Unit G-3-159510 | Union Pacific Resources Company | Kurten (Georgetown) | Brazos | 1 | 12.5K | 401K | Jul 1996 – May 1998 |
| Ludmila Toupal O-3-18636 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Burleson | 1 | 11.9K | 1.29K | by Jan 1993 – May 1997 |
| Arco Fee Unit O-6-13196 | Union Pacific Resources Company | Brookeland (Austin Chalk, 8800) | Newton | 2 | 11.8K | 150K | Aug 1993 – Sep 1993 |
| Wardner, G.P. O-4-12439 | Union Pacific Resources Company | Stratton (G-15-5) | Nueces | 2 | 11.7K | 92.9K | Jul 1994 – Oct 1996 |
| Jones-Foster Unit O-3-22184 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 11.7K | 66.2K | Mar 1993 – Dec 1993 |
| Oldenburg G-3-150965 | Union Pacific Resources Company | Giddings (Austin Chalk, Gas) | Fayette | 1 | 11.5K | 407K | Jun 1994 – Aug 1996 |
| Wardner, G.P. O-4-11924 | Union Pacific Resources Company | Stratton (W-39-3) | Kleberg | 1 | 11.5K | 77.8K | by Jan 1993 – Oct 1996 |
| Bscu-Temple-Inland O-6-13020 | Union Pacific Resources Company | Brookeland (Austin Chalk, 8800) | Sabine | 1 | 11.3K | 381K | by Jan 1993 – Aug 1997 |
| Kurz O-3-21297 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 10.8K | 19.7K | by Jan 1993 – Jan 1997 |
| Fenn Ranch Unit O-3-22422 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Lee | 1 | 10.5K | 18.3K | May 1994 – Mar 1996 |
| Peto Unit G-3-160724 | Union Pacific Resources Company | Giddings (Austin Chalk, Gas) | Washington | 1 | 10.3K | 55.7K | Jul 1996 – Jan 1998 |
| Brown-Ely Unit O-3-23507 | Union Pacific Resources Company | Giddings (Buda) | Milam | 1 | 9.89K | 6.88K | Jun 1998 – Nov 1998 |
| Hielscher-White O-3-17934 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Lee | 1 | 9.38K | 22.3K | by Jan 1993 – Jun 1998 |
| Doc O-3-18752 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Fayette | 1 | 9.12K | 253K | by Jan 1993 – Apr 1999 |
| Risinger-Freeman Unit O-3-21787 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 8.89K | 16.4K | by Jan 1993 – Jan 1995 |
| Williams, R. L. et Al O-3-17769 | Union Pacific Resources Company | Kurten (Buda) | Robertson | 1 | 8.85K | 6.22K | by Jan 1993 – Jan 1995 |
| Terry, I. W. O-10-25371 | Union Pacific Resources Company | Conger, SW (Penn) | Sterling | 19 | 8.66K | 683K | by Jan 1993 – Jul 1999 |
| Franklin-Hein O-3-20867 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Burleson | 1 | 8.61K | 3.1K | by Jan 1993 – Apr 1996 |
| Lucy Donovan et al Unit O-6-12757 | Union Pacific Resources Company | Carthage (Travis Peak-Woolworth) | Panola | 1 | 8.44K | 419K | by Jan 1993 – Jun 1998 |
| McClanahan O-1-12663 | Union Pacific Resources Company | Pearsall (Austin Chalk) | Frio | 1 | 8.21K | 17 | May 1993 – Jan 1996 |
| Salpetro-Penicka Unit O-3-21175 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 7.97K | 26.8K | by Jan 1993 – Mar 1994 |
| Dewitt-Lehmann Unit O-3-21716 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Fayette | 1 | 7.83K | 79.7K | by Jan 1993 – Feb 1993 |
| Emola Unit O-3-17456 | Union Pacific Resources Company | Kurten (Buda) | Brazos | 1 | 7.7K | 3.85K | by Jan 1993 – Aug 1995 |
| Outlaw Unit O-1-7622 | Union Pacific Resources Company | Pearsall (Austin Chalk) | Frio | 1 | 7.69K | 1.84K | by Jan 1993 – Mar 1995 |
| Weth, J. O-3-15095 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Fayette | 1 | 7.66K | 23.7K | by Jan 1993 – Jul 1998 |
| Williams, R. L. -A- O-3-21702 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Robertson | 1 | 7.56K | 4.43K | by Jan 1993 – Aug 1995 |
| Payne, Thomas A. O-3-13977 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Burleson | 1 | 7.47K | 202 | by Jan 1993 – Nov 1994 |
| Ammansville O.L. Unit O-3-22332 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Fayette | 1 | 7.38K | 1.79K | Dec 1993 – Mar 1998 |
| Teinert Unit O-3-14375 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Lee | 1 | 7.28K | 20 | by Jan 1993 – Apr 1998 |
| Scamardo O-3-21601 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Robertson | 1 | 7.08K | 3.59K | by Jan 1993 – Dec 1996 |
| Wardner, G. P. O-4-12211 | Union Pacific Resources Company | Stratton (F-25-7) | Nueces | 1 | 7.02K | 27K | May 1993 – Jun 1995 |
| Heolscher, Alice B. O-3-23154 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Burleson | 1 | 6.81K | 175K | Jun 1996 – May 1997 |
| Livingston Unit O-3-17503 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Lee | 1 | 6.56K | 29.1K | by Jan 1993 – Mar 1995 |
| Fritsche-Fritsche Unit O-3-16405 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Lee | 1 | 6.25K | 18.6K | by Jan 1993 – Apr 1995 |
| Bailey-Hann Unit O-3-23509 | Union Pacific Resources Company | Giddings (Buda) | Milam | 1 | 6.11K | 7.3K | Apr 1998 – Dec 1998 |
| Ruffino P. "B" O-3-21734 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 6.08K | 4.46K | by Jan 1993 – Dec 1995 |
| Cameron, B. O-3-12359 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Lee | 1 | 6K | 7.6K | by Jan 1993 – Oct 1995 |
| Dcrc-SEC.4 O-4-12569 | Union Pacific Resources Company | Moca | Webb | 2 | 5.99K | 11.3K | Nov 1995 – Mar 1996 |
| Texaco "A" O-6-12947 | Union Pacific Resources Company | Brookeland (Austin Chalk, 8800) | Newton | 2 | 5.95K | 46.8K | by Jan 1993 – Jul 1994 |
| Sheppard Unit O-3-13525 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Lee | 1 | 5.73K | 118K | by Jan 1993 – Jul 1999 |
| Jones-Walker Unit O-3-21592 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 5.71K | 60.7K | by Jan 1993 – Jun 1994 |
| Menzel, E. Unit O-3-17736 | Union Pacific Resources Company | Giddings (Buda) | Lee | 1 | 5.64K | 8.54K | Feb 1993 – Mar 1995 |
| Bienski-Porterfield Unit O-3-21908 | Union Pacific Resources Company | Giddings (Austin Chalk-3) | Brazos | 1 | 5.58K | 24K | by Jan 1993 – Sep 1993 |