| Lonie Mae A O-3-28022 | Giddings (Austin Chalk-3) | Lee | 1 | 266K | 874K | Dec 2022 – Apr 2026 |
| Dusek Unit No. 1 O-3-22061 | Giddings (Austin Chalk-3) | Fayette | 2 | 217K | 1.91M | May 1993 – Apr 2026 |
| Post Oak O-3-23562 | Giddings (Austin Chalk-3) | Fayette | 1 | 158K | 298K | Aug 1998 – Apr 2026 |
| Stegmueller O-3-13204 | Giddings (Austin Chalk-3) | Burleson | 11 | 130K | 1.79M | Jan 1993 – Apr 2026 |
| Bernshausen Unit O-3-21405 | Giddings (Austin Chalk-3) | Fayette | 2 | 125K | 467K | Jan 1993 – Apr 2026 |
| Zimmerhanzel O-3-25472 | Giddings (Austin Chalk-3) | Fayette | 1 | 112K | 241K | Jan 2010 – Apr 2026 |
| Lonie Mae #1-H O-3-14106 | Giddings (Austin Chalk-3) | Lee | 2 | 104K | 234K | Jan 1993 – Apr 2026 |
| Goebel Brothers O-3-12980 | Giddings (Austin Chalk-3) | Fayette | 2 | 101K | 77K | Jan 1993 – Apr 2026 |
| Itech-Hannusch O-3-22098 | Giddings (Austin Chalk-3) | Fayette | 1 | 100K | 540K | Jun 1993 – Apr 2026 |
| Patranella #1 O-3-22389 | Giddings (Austin Chalk-3) | Burleson | 1 | 81.1K | 39.3K | Apr 1994 – Apr 2026 |
| Schulz/Pietsch O-3-21355 | Giddings (Austin Chalk-3) | Fayette | 1 | 74.9K | 233K | Jan 1993 – Apr 2026 |
| Porter Murphy O-3-28031 | Giddings (Austin Chalk-3) | Fayette | 1 | 66.7K | 368K | Sep 2022 – Apr 2026 |
| Dusek O-3-21839 | Giddings (Austin Chalk-3) | Fayette | 1 | 64.6K | 780K | Jan 1993 – Apr 2026 |
| Mach O-3-21567 | Giddings (Austin Chalk-3) | Fayette | 2 | 62.5K | 215K | Jan 1993 – Apr 2026 |
| Zona, Mary Unit O-3-12987 | Giddings (Austin Chalk-3) | Lee | 1 | 60.7K | 154K | Jan 1993 – Apr 2026 |
| Ansell O-3-23183 | Giddings (Austin Chalk-3) | Fayette | 1 | 58.5K | 155K | Mar 1996 – Apr 2026 |
| Pat O-3-25210 | Giddings (Austin Chalk-3) | Fayette | 1 | 57.1K | 44.8K | Aug 2008 – Apr 2026 |
| Holmes O-3-13985 | Giddings (Austin Chalk-3) | Fayette | 2 | 50.3K | 202K | Jan 1993 – Apr 2026 |
| Loebau O-3-22122 | Giddings (Austin Chalk-3) | Lee | 1 | 49.1K | 44.2K | Jan 1993 – Apr 2026 |
| Goin O-3-18018 | Giddings (Austin Chalk-3) | Lee | 1 | 44K | 198K | Jan 1993 – Apr 2026 |
| Doms-Cogdill Unit O-3-14373 | Giddings (Austin Chalk-3) | Fayette | 1 | 44K | 6.04K | Jan 1993 – Apr 2026 |
| Kaiser O-3-25060 | Giddings (Austin Chalk-3) | Fayette | 1 | 42.7K | 94K | May 2007 – Apr 2026 |
| Opersteny Unit O-3-13604 | Kurten (Woodbine) | Brazos | 1 | 42.3K | 15.4K | Jan 1993 – Apr 2026 |
| Atlanta Hatfield O-3-14599 | Giddings (Austin Chalk-3) | Fayette | 2 | 42.2K | 192K | Jan 1993 – Apr 2026 |
| LPB O-3-23983 | Giddings (Austin Chalk-3) | Fayette | 1 | 42.1K | 616K | Mar 2001 – Apr 2026 |
| Lane, M. A. O-3-21416 | Giddings (Austin Chalk-3) | Fayette | 1 | 41.6K | 538K | Jan 1993 – Apr 2026 |
| Schultz, W. OL O-3-24955 | Giddings (Austin Chalk-3) | Fayette | 1 | 35.4K | 284K | Jun 2006 – Apr 2026 |
| Vacek O-3-18113 | Giddings (Austin Chalk-3) | Fayette | 2 | 34.5K | 33.3K | Jan 1993 – Apr 2026 |
| Gibson, T.E. O-3-16935 | Giddings (Austin Chalk-3) | Burleson | 2 | 31K | 102K | Jan 1993 – Apr 2026 |
| Schulze O-3-20151 | Giddings (Austin Chalk-3) | Lee | 2 | 27.1K | 387K | Jan 1993 – Apr 2026 |
| Siegmund, Max O-3-14980 | Giddings (Austin Chalk-3) | Lee | 1 | 25.4K | 64.7K | Feb 1993 – Apr 2026 |
| Freytag "A" O-3-16757 | Giddings (Austin Chalk-3) | Fayette | 1 | 24.5K | 133K | Feb 1993 – Apr 2026 |
| Roadrunner-Knox Unit "A" O-3-19387 | Giddings (Austin Chalk-3) | Lee | 1 | 24.3K | 240K | Jan 1993 – Apr 2026 |
| Stahl O-3-21463 | Giddings (Austin Chalk-3) | Fayette | 1 | 23.7K | 564K | Jan 1993 – Apr 2026 |
| Shelden, Millicent Brown O-3-13697 | Giddings (Austin Chalk-3) | Fayette | 1 | 16.8K | 108K | Jan 1993 – Apr 2026 |
| Jenny "P" O-3-16737 | Giddings (Austin Chalk-3) | Lee | 2 | 14.2K | 414K | Jan 1993 – Apr 2026 |
| King, R. O-3-12585 | Giddings (Austin Chalk-3) | Lee | 1 | 13.9K | 185K | Jan 1993 – Apr 2026 |
| Levien O-3-18883 | Giddings (Austin Chalk-3) | Fayette | 1 | 9.33K | 238K | Jan 1993 – Apr 2026 |
| Ramsey Unit O-3-24338 | Giddings (Austin Chalk-3) | Fayette | 1 | 9K | 88.7K | Dec 2002 – Apr 2026 |
| Clara O-3-14736 | Giddings (Austin Chalk-3) | Fayette | 1 | 8.2K | 12.3K | Jan 1993 – Apr 2026 |
| Hawn O-3-26011 | Giddings (Austin Chalk-3) | Lee | 1 | 3.63K | 259K | Oct 2011 – Apr 2026 |
| Susie 2H O-3-24883 | Giddings (Austin Chalk-3) | Fayette | 1 | 3.5K | 29.4K | Aug 2006 – Apr 2026 |
| Buchorn Unit O-3-22587 | Giddings (Austin Chalk-3) | Fayette | 1 | 154K | 414K | Oct 1994 – Mar 2026 |
| Becker-Oltmann O-3-20092 | Giddings (Austin Chalk-3) | Lee | 4 | 67.1K | 45K | Jan 1993 – Mar 2026 |
| Houghton, Ann O-3-16274 | Giddings (Austin Chalk-3) | Fayette | 3 | 50.6K | 363K | Jan 1993 – Mar 2026 |
| Ubernosky O-3-24127 | Giddings (Austin Chalk-3) | Burleson | 1 | 44.4K | 84K | Dec 2001 – Feb 2026 |
| Liere DL Unit O-3-21819 | Giddings (Austin Chalk-3) | Fayette | 1 | 126K | 332K | Jan 1993 – Jan 2026 |
| Patsy O-3-19461 | Giddings (Austin Chalk-3) | Lee | 2 | 53.8K | 769K | Jan 1993 – Jan 2026 |
| Lois O-3-13360 | Giddings (Austin Chalk-3) | Fayette | 1 | 50.2K | 374K | Jan 1993 – Jan 2026 |
| Kuhn O-3-25122 | Giddings (Austin Chalk-3) | Bastrop | 2 | 48.1K | 23.8K | Jan 2008 – Jan 2026 |