| Rieger #1042-491-30504 | North Texas Energy Inc. only | Williamson, TXMatthews | ActiveOil | 1,500 | Jul 11, 2024 | — | — |
| Warner #142-491-30503 | Walker Operating Company only | Williamson, TXChapman Abbott | Plugged | 1,600 | May 23, 2024 | — | — |
| Alan #142-491-30501 | Walker Operating Company only | Williamson, TX | Not on schedule | 1,000 | Feb 26, 2024 | — | — |
| Daniel #142-491-30499 | Walker Operating Company only | Williamson, TX | Not on schedule | 1,000 | Feb 22, 2024 | — | — |
| Daniel #242-491-30500 | Walker Operating Company only | Williamson, TX | Not on schedule | 1,000 | Feb 22, 2024 | — | — |
| Joseph #142-491-30502 | Walker Operating Company only | Williamson, TX | Not on schedule | 1,000 | Feb 22, 2024 | — | — |
| Spellings #242-491-30497 | North Texas Energy Inc. only | Williamson, TXMatthews | ActiveOil | 1,500 | Jan 26, 2023 | — | — |
| Storm TPL1 #142-491-30496 | Flint Hills Resources, LC only | Williamson, TX | Not on schedule | 350 | Nov 21, 2022 | — | — |
| Poldrack #242-491-30494 | Walker Operating Company only | Williamson, TX | Not on schedule | 1,850 | Feb 28, 2022 | — | — |
| Poldrack #342-491-30495 | Walker Operating Company only | Williamson, TX | Not on schedule | 1,850 | Feb 28, 2022 | — | — |
| Poldrack #142-491-30493 | Walker Operating Company only | Williamson, TXThrall/Wildcat | Plugged | 1,850 | Feb 25, 2022 | — | — |
| Petrucci #142-491-30491 | Walker Operating Company only | Williamson, TX | Not on schedule | 1,500 | Jan 11, 2022 | — | — |
| Petrucci #242-491-30492 | Walker Operating Company only | Williamson, TX | Not on schedule | 1,500 | Jan 11, 2022 | — | — |
| Simcik #1__42-491-30489 | Walker Operating Company only | Williamson, TXThrall | Plugged | 1,500 | Jan 3, 2022 | — | — |
| Simcik #242-491-30490 | Walker Operating Company only | Williamson, TX | Not on schedule | 1,500 | Jan 3, 2022 | — | — |
| Spellings #142-491-30488 | North Texas Energy Inc. only | Williamson, TXMatthews | ActiveOil | 2,000 | Oct 15, 2021 | — | — |
| SE 376 #142-491-30487 | Enterprise Products Operatingllc only | Williamson, TX | Not on schedule | 400 | Aug 4, 2021 | — | — |
| SE-378 #142-491-30486 | Enterprise Products Operatingllc only | Williamson, TX | Not on schedule | 400 | Jun 5, 2020 | — | — |
| Rieger Otto #942-491-30485 | North Texas Energy Inc. only | Williamson, TXMatthews | ActiveOil | 1,000 | Feb 7, 2020 | — | — |
| Rieger Otto #742-491-30482 | North Texas Energy Inc. only | Williamson, TXMatthews | ActiveOil | 1,000 | Dec 31, 2018 | — | — |
| Schneider Unit #142-491-30484 | U S Energy Corp. of Amer. Inc. only | Williamson, TXThrall | Plugged | 4,500 | Jul 20, 2018 | — | — |
| Rieger, Otto #842-491-30483 | North Texas Energy,inc. only | Williamson, TX | Not on schedule | 1,500 | May 3, 2018 | — | — |
| Zeplin #z 2__42-491-30481 | Trinity Brothers Energy LLC only | Williamson, TXThrall | Plugged | 995 | Jan 30, 2018 | — | — |
| L21-02 #0342-491-30480 | Atmos Energy Corp., Mid-Tex Div. only | Williamson, TX | Not on schedule | 250 | Oct 25, 2017 | — | — |
| Zeplin #z 1__42-491-30479 | Trinity Brothers Energy LLC only | Williamson, TXThrall | Plugged | 995 | Sep 7, 2017 | — | — |
| Bohls #142-491-30478 | Texas Secondary Oil Corporation only | Williamson, TXWildcat | Plugged | 2,000 | Dec 29, 2015 | — | — |
| Poldrack #142-491-30477 | Winchester Oil & Gas LLC only | Williamson, TX | Not on schedule | 3,000 | Sep 16, 2015 | — | — |
| SH #142-491-30475 | Winchester Oil & Gas LLC only | Williamson, TX | Not on schedule | 3,000 | Sep 15, 2015 | — | — |
| SH #242-491-30476 | Winchester Oil & Gas LLC only | Williamson, TX | Not on schedule | 3,000 | Sep 15, 2015 | — | — |
| Thrall Unit #10342-491-30473 | New Era Petroleum Inc. only | Williamson, TXThrall | Plugged | 2,000 | Oct 8, 2014 | — | — |
| Thrall Unit #102__42-491-30474 | New Era Petroleum Inc. only | Williamson, TXThrall | Plugged | 1,350 | Oct 8, 2014 | — | — |
| Thrall Unit #101__42-491-30472 | New Era Petroleum Inc. only | Williamson, TXThrall | Plugged | 1,300 | Sep 24, 2014 | — | — |
| Moody #142-491-30471 | M. A. Mueller Const. Co. Inc. only | Williamson, TXWildcat | Plugged | 2,000 | Jul 31, 2014 | — | — |
| Atmos CP Well L1910 #1CP42-491-30470 | Atmos Pipeline - Texas only | Williamson, TX | Not on schedule | 300 | May 29, 2014 | — | — |
| Zarza #142-491-30469 | Magnum Oilfield Services LLC only | Williamson, TX | Drilled | 1,500 | Mar 14, 2014 | — | — |
| Knapek #142-491-30468 | Malish Operating LLC only | Williamson, TXThrall | PluggedOil | 3,000 | Feb 25, 2014 | — | — |
| Thrall Unit #20342-491-30466 | JMR Resources LLC only | Williamson, TX | Not on schedule | 1,400 | Feb 21, 2014 | — | — |
| Thrall Unit #20442-491-30467 | JMR Resources LLC only | Williamson, TX | Not on schedule | 1,350 | Feb 21, 2014 | — | — |
| Thrall Unit #20242-491-30465 | JMR Resources LLC only | Williamson, TX | Not on schedule | 1,300 | Feb 12, 2014 | — | — |
| Brachmeyer #142-491-30464 | Black Jack Services, L.L.C. only | Williamson, TX | Drilled | 1,500 | Oct 29, 2013 | — | — |
| A. Sladek #1C42-491-30463 | Black Jack Services, L.L.C. only | Williamson, TX | Not on schedule | 1,500 | Oct 11, 2013 | — | — |
| Rinderknecht #242-491-30462 | Bissell Operating LLC only | Williamson, TXWildcat | PluggedOil | 2,300 | Jun 12, 2013 | — | — |
| H. A. Stiles #20042-491-30459 | P&F Operations LLC only | Williamson, TXThrall | ActiveOil | 900 | Dec 14, 2012 | — | — |
| H. A. Stiles #20142-491-30460 | P&F Operations LLC only | Williamson, TXThrall | ActiveOil | 1,150 | Nov 7, 2012 | — | — |
| Otto Rieger #r 142-491-30461 | Black Jack Services, L.L.C. only | Williamson, TX | Not on schedule | 1,500 | Nov 6, 2012 | — | — |
| Malish #142-491-30458 | Malish Operating LLC only | Williamson, TXNoack | PluggedOil | 1,950 | Sep 20, 2012 | — | — |
| Stauffer #1__42-491-30229 | Malish Operating LLC only | Williamson, TXWildcat | Plugged | 1,950 | Sep 6, 2012 | — | — |
| Long Branch #5542-491-30457 | Maverick Prod. Co. Inc. only | Williamson, TXWildcat | Plugged | 5,500 | Aug 13, 2012 | — | — |
| Kennedy #a 142-491-30456 | Hotco Energy Company only | Williamson, TX | Drilled | 1,150 | May 10, 2012 | — | — |
| CP #c 0142-491-30454 | Sunoco Pipeline L.P. only | Williamson, TX | Not on schedule | 380 | May 4, 2012 | — | — |