| Gladys City O-3-3963 | Rheaco Oil Company, Ltd. only | Spindletop | Jefferson | 104 | 602K | 21 | by Jan 1993 – Aug 2026 |
| Gladys City O-3-3959 | Kingwood Exploration LLC only | Spindletop | Jefferson | 15 | 601K | 60.1K | by Jan 1993 – Aug 2026 |
| Gladys Wheeler Unit 4 G-1-277607 | BPX Operating Company only | Eagleville (Eagle Ford-1) | McMullen | 1 | 205K | 1.52M | Jun 2015 – Aug 2022 |
| Dameron "42" O-10-37486 | Endeavor Energy Resources L.P. only | Gladys Cowden (Spraberry) | Martin | 1 | 119K | 249K | Oct 2004 – Aug 2012 |
| Gladys City O-3-6464 | Finley Resources, Inc. only | Spindletop | Jefferson | 1 | 107K | 73 | by Jan 1993 – Sep 2024 |
| Gladys City 'A' O-3-25778 | Kingwood Exploration LLC only | Spindletop | Jefferson | 3 | 64.5K | 0 | Apr 2011 – Aug 2026 |
| Gladys O-3-12350 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Lee | 2 | 59.2K | 1.47M | by Jan 1993 – Aug 2026 |
| Carouthers, Gladys O-3-20299 | Jay Management Company, LLC only | Martha, S.E. (CM-1 Sand) | Liberty | 1 | 57.9K | 116K | by Jan 1993 – Mar 2015 |
| Winter, Gladys O-8-26378 | Sojourner Drilling Corporation only | Honeymooners (Tannehill, Upper) | Stonewall | 2 | 55.1K | 1.03K | by Jan 1993 – Feb 2020 |
| Chumbley, Gladys Etal O-13-9800 | Grayson Petroleum Company only | Mackoy (Ellenburger) | Grayson | 1 | 42.5K | 23 | by Jan 1993 – Aug 2026 |
| Clark, Gladys "A" O-9-7309 | BCP Resources, LLC only | Spraberry (Trend Area) | Reagan | 4 | 32.2K | 92.1K | by Jan 1993 – Dec 2023 |
| Gladys '14' O-11-70038 | Watusi Energy LLC only | Walls (Wolfcamp) | Dawson | 1 | 29.3K | 5.63K | Feb 2013 – Jul 2026 |
| Hoskinson, Gladys R. Gas Unit 1 G-4-73808 | EOG Resources, Inc. only | Midway, South (Shell Deep) | San Patricio | 1 | 27.2K | 978K | by Jan 1993 – Nov 1998 |
| Gladys 17 O-10-44540 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Howard | 1 | 21.5K | 144K | Oct 2013 – Aug 2026 |
| Page, Gladys O-2-10719 | Welderxp Ltd. only | Cosden, West (Mackhank) | Bee | 1 | 20.3K | 11.1K | Jul 2013 – Oct 2018 |
| Brandt, Gladys O-2-7665 | Hurd Enterprises, Ltd. only | Cuthbertson (Mackhank) | De Witt | 3 | 18.2K | 2.25K | by Jan 1993 – Jan 1995 |
| De la Garza Gas Unit G-2-225275 | Nog Production & Operating LLC only | Gladys Powell (8000) | Goliad | 1 | 17.6K | 413K | Jan 2007 – Dec 2022 |
| Gladys City #1 Unit O-3-24608 | Block "T" Petroleum, Inc. only | Spindletop | Jefferson | 1 | 17.4K | 0 | May 2004 – May 2013 |
| Clark, Gladys O-9-7057 | Apache Corporation only | Spraberry (Trend Area) | Reagan | 1 | 16.8K | 45.7K | by Jan 1993 – Jul 2008 |
| Gray, Gladys O-8-21709 | Killion Well Service Inc. only | Stephens County Regular | Stephens | 1 | 16.6K | 8.63K | by Jan 1993 – Jun 2000 |
| Nichols, Gladys O-8-17416 | 2 W Petroleum only | Brown County Regular | Brown | 5 | 14.7K | 110K | by Jan 1993 – May 2021 |
| Williams, Gladys O-13-26347 | Devon Energy Production Co, L.P. only | Ken-Rich (Conglomerate) | Jack | 2 | 10.9K | 163K | by Jan 1993 – Mar 2005 |
| Gladys Davis Unit G-6-251470 | Diversified Production LLC only | Hallsville, NE (Cotton Valley) | Harrison | 1 | 10.4K | 1.84M | Oct 2008 – Aug 2026 |
| Gladys Davis Unit G-6-216657 | Diversified Production LLC only | Hallsville, NE (Cotton Valley) | Harrison | 1 | 9.41K | 852K | Nov 2005 – Aug 2026 |
| Johnson, Gladys O-13-28864 | Crossbow Resources, LLC only | Morris (Consolidated Congl.) | Jack | 1 | 8.68K | 2.56K | Oct 1994 – Aug 2026 |
| Gladys Davis Unit G-6-210012 | Diversified Production LLC only | Hallsville, NE (Cotton Valley) | Harrison | 1 | 8.58K | 678K | Feb 2005 – Feb 2020 |
| Cowden O-10-29443 | Diamondback E&P LLC only | Gladys Cowden (Devonian) | Martin | 1 | 8.44K | 277K | by Jan 1993 – Mar 2011 |
| Hairrell, Gladys O-1-5830 | Texas Secondary Oil Corporation only | Taylor-Ina | Medina | 6 | 8K | 21 | by Jan 1993 – Aug 2026 |
| Gladys Smith a Unit G-13-263894 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 6.3K | 598K | Oct 2011 – Sep 2023 |
| Gladys Davis Unit G-6-224933 | Diversified Production LLC only | Hallsville, NE (Cotton Valley) | Harrison | 1 | 6.14K | 798K | Nov 2006 – Aug 2026 |
| Page, Gladys G-2-99255 | Welderxp Ltd. only | Cosden (Z-12) | Bee | 1 | 5.73K | 390K | by Jan 1993 – Mar 2003 |
| Gladys Davis Unit G-6-211977 | Diversified Production LLC only | Hallsville, NE (Cotton Valley) | Harrison | 1 | 5.71K | 533K | Apr 2005 – Aug 2026 |
| Gladys Davis Unit G-6-227548 | Diversified Production LLC only | Hallsville, NE (Cotton Valley) | Harrison | 1 | 5.25K | 698K | Dec 2006 – Aug 2026 |
| Crawford, Gladys O-1-13577 | Proline Energy Resources Inc only | Dale-McBride | Caldwell | 1 | 5.06K | 14 | by Jan 1993 – Nov 2025 |
| Gladys Davis Unit G-6-221775 | Diversified Production LLC only | Hallsville, NE (Cotton Valley) | Harrison | 1 | 4.34K | 281K | May 2006 – Jun 2012 |
| Sloan, Gladys O-8-16777 | Breck Operating Corp. only | Stephens County Regular | Stephens | 2 | 4.28K | 21 | by Jan 1993 – Jan 1999 |
| Gladys Davis Unit G-6-221132 | Diversified Production LLC only | Hallsville, NE (Cotton Valley) | Harrison | 1 | 4.26K | 444K | Mar 2006 – Aug 2026 |
| Gladys Davis Unit G-6-222370 | Diversified Production LLC only | Hallsville, NE (Cotton Valley) | Harrison | 1 | 4.15K | 473K | Aug 2006 – Dec 2024 |
| Gladys Davis Unit G-6-216660 | Diversified Production LLC only | Hallsville, NE (Cotton Valley) | Harrison | 1 | 4.05K | 480K | Nov 2005 – Aug 2026 |
| Williams, Gladys G-13-122088 | Eagleridge Operating, LLC only | Boonsville (Bend Congl., Gas) | Jack | 1 | 3.22K | 576K | by Jan 1993 – Aug 2026 |
| Gladys Davis Unit G-6-216659 | Diversified Production LLC only | Woodlawn (Travis Peak) | Harrison | 1 | 3.1K | 430K | Nov 2005 – Oct 2019 |
| Hairrell, Gladys -C- O-1-5946 | Texas Secondary Oil Corporation only | Taylor-Ina | Medina | 4 | 3.07K | 21 | by Jan 1993 – Mar 2022 |
| Gladys City Company O-3-25249 | Kingwood Exploration LLC only | Spindletop | Jefferson | 1 | 2.96K | 7.31K | May 2008 – Feb 2009 |
| Gladys -K- O-3-17886 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Fayette | 1 | 2.36K | 15.3K | by Jan 1993 – Apr 1995 |
| Gladys Smith W Unit O-13-31246 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 2.04K | 30.2K | Jan 2008 – Dec 2008 |
| Davis, Gladys G-6-17051 | Tipco Operating Co. only | Woodlawn (Pettit) | Harrison | 1 | 2.02K | 207K | by Jan 1993 – Jul 2026 |
| Gladys Page O-2-6675 | Unit Petroleum Company only | Hockley (3350 Lens) | Bee | 1 | 1.89K | 23 | Mar 1993 – Jan 1998 |
| Ford, Gladys E. O-1-1869 | Gonzales, M. G. only | Kaye (Navarro) | Wilson | 1 | 1.5K | 14 | Mar 1993 – Feb 2008 |
| Key, Gladys Powell O-2-2522 | Dewbre Petroleum Corporation only | Hordes Creek, North (Pettus) | Goliad | 1 | 1.18K | 84 | by Jan 1993 – Apr 2000 |
| Clark, Gladys G-10-122506 | Fasken Oil and Ranch, Ltd. only | Garden City (Strawn) | Glasscock | 1 | 759 | 211K | by Jan 1993 – Nov 1998 |