| Sanford Unit Dim O-1-15589 | Exco Operating Company, LP only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 124K | 189K | Nov 2011 – Aug 2026 |
| Sanford O-14-6747 | Tryma Operating only | Panhandle Hutchinson County Fld. | Hutchinson | 5 | 68.8K | 197K | by Jan 1993 – Feb 2026 |
| Sanford-Gray O-10-13742 | Olsen Energy Inc. only | Pecos Valley (Devonian 5100) | Pecos | 2 | 59.6K | 267K | by Jan 1993 – May 2019 |
| Sanford 480 G-14-232482 | Borger Resources 2 LLC only | Panhandle, West | Carson | 1 | 50.2K | 806K | Oct 2007 – Aug 2026 |
| Sanford, J. M. "E" O-14-4570 | Topper Oil Company only | Panhandle Hutchinson County Fld. | Hutchinson | 9 | 47.8K | 836K | by Jan 1993 – Aug 2026 |
| Sanford, R.H O-1-13760 | Marshfield Oil & Gas, LLC only | Sutil (Reef) | Wilson | 1 | 21.4K | 15 | Jul 1993 – Nov 2002 |
| Sanford O-14-4278 | Borger Resources 2 LLC only | Panhandle Hutchinson County Fld. | Hutchinson | 7 | 20.6K | 311K | by Jan 1993 – Oct 2022 |
| Continental Sanford O-14-919 | Borger Resources 2 LLC only | Panhandle Hutchinson County Fld. | Hutchinson | 7 | 19K | 112K | by Jan 1993 – May 2022 |
| Guy, W. B. O-9-3897 | T-N-T Engineering, Inc. only | Sanford, North (Fry) | Runnels | 1 | 18.9K | 2.72K | by Jan 1993 – Aug 2010 |
| Smith, T. D. Estate O-9-12442 | Co Energy only | Sanford (Fry) | Runnels | 1 | 17.4K | 54 | by Jan 1993 – Jan 2006 |
| Sanford (Pettet) G-6-254582 | Buckhorn Operating LLC only | Angie,(pettet) | San Augustine | 1 | 16.2K | 45.3K | Nov 2009 – Jul 2014 |
| Gray, Sanford O-10-27792 | Porosity Oil LLC only | Pecos Valley (Low Gravity) | Pecos | 3 | 14.2K | 86 | by Jan 1993 – Aug 2026 |
| Gray, Sanford O-10-19680 | Permian Resources, Inc. only | Pecos Valley (Montoya) | Pecos | 1 | 12.4K | 21 | by Jan 1993 – Nov 2000 |
| Sanford -C- O-14-2426 | Bar L Producers only | Panhandle Carson County Field | Carson | 5 | 10.5K | 492K | by Jan 1993 – May 2017 |
| Great Plains-Sanford G-14-23783 | High River Res Operating, LLC only | Panhandle, West | Hutchinson | 1 | 7.44K | 720K | by Jan 1993 – Aug 2026 |
| Leppard, Annie Mae O-1-11331 | Johnson Sanford OP Co., Ltd only | Pearsall (Austin Chalk) | Frio | 4 | 7.34K | 59.5K | by Jan 1993 – Feb 2008 |
| North American-Sanford O-14-2517 | Losure, Ken only | Panhandle Hutchinson County Fld. | Hutchinson | 5 | 6.6K | 52.5K | by Jan 1993 – Feb 2000 |
| Sanford-Gray O-10-11025 | Northstar Operating Company only | Pecos Valley (Devonian 5100) | Pecos | 1 | 5.73K | 91.4K | by Jan 1993 – Apr 2005 |
| Sanford -D- O-14-2472 | Lera only | Panhandle Carson County Field | Carson | 2 | 5.51K | 188K | by Jan 1993 – Jun 2016 |
| Sanford-Alamosa O-14-2787 | Losure, Ken only | Panhandle Hutchinson County Fld. | Hutchinson | 5 | 5.46K | 153K | by Jan 1993 – Aug 2011 |
| Great Plains-Sanford G-14-23802 | High River Res Operating, LLC only | Panhandle, West | Hutchinson | 1 | 5.43K | 606K | by Jan 1993 – Aug 2026 |
| Patterson O-9-12600 | D.J. & T. Energy only | Sanford (Fry) | Runnels | 1 | 5.08K | 58 | by Jan 1993 – Sep 1998 |
| Leppard "C" O-1-13059 | Johnson Sanford OP Co., Ltd only | Pearsall (Austin Chalk) | Frio | 1 | 5.02K | 25 | by Jan 1993 – Mar 2004 |
| Sanford, Wanda O-13-31023 | Borderline Operating Corp. only | Newark, East (Barnett Shale) | Wise | 1 | 4.34K | 48.5K | Mar 2008 – Aug 2014 |
| Sanford J G-14-23935 | High River Res Operating, LLC only | Panhandle, West | Hutchinson | 1 | 4.1K | 447K | by Jan 1993 – Aug 2026 |
| Sanford G-10-158917 | Remuda Operating Company only | Pecos Valley (Devonian 5100) | Pecos | 1 | 3.47K | 406K | May 1996 – Nov 2004 |
| Sanford O-10-37420 | Remuda Operating Company only | Pecos Valley (Devonian 5100) | Pecos | 1 | 3.21K | 19.6K | Dec 2004 – Apr 2018 |
| Sanford -B- O-14-2394 | Lera only | Panhandle Carson County Field | Carson | 2 | 3.01K | 136K | by Jan 1993 – Jun 2016 |
| Sanford O-10-4780 | N & O Oil Co. only | Pecos Valley (Low Gravity) | Pecos | 6 | 2.54K | 8.88K | by Jan 1993 – May 2003 |
| Sanford -M- O-14-886 | Borger Resources 2 LLC only | Panhandle Hutchinson County Fld. | Hutchinson | 2 | 2.52K | 10.1K | by Jan 1993 – Nov 2004 |
| Sanford #2 O-1-12923 | Marshfield Oil & Gas, LLC only | Sutil (Buda) | Wilson | 1 | 2.31K | 13 | by Jan 1993 – Jul 2011 |
| Leppard Ranch "B" O-1-12951 | Johnson Sanford OP Co., Ltd only | Pearsall (Austin Chalk) | Frio | 1 | 2.1K | 25 | by Jan 1993 – Mar 2007 |
| Sanford O-14-2947 | Lera only | Panhandle Carson County Field | Carson | 6 | 2K | 29.6K | by Jan 1993 – Jul 2016 |
| Sanford J1 G-14-23934 | High River Res Operating, LLC only | Panhandle, West | Hutchinson | 1 | 1.87K | 272K | by Jan 1993 – Aug 2026 |
| Sanford-Gray O-10-4778 | N & O Oil Co. only | Pecos Valley (High Gravity) | Pecos | 4 | 1.75K | 523 | by Jan 1993 – Mar 2003 |
| Gulf-Sanford A G-14-217267 | Large Operating LLC only | Panhandle, West | Hutchinson | 1 | 1.31K | 246K | Apr 2006 – Jul 2026 |
| Sanford "A" O-14-2428 | Lera only | Panhandle Carson County Field | Carson | 2 | 1.17K | 31.5K | by Jan 1993 – Aug 2016 |
| Sanford O-14-4934 | Rass Operating only | Panhandle Hutchinson County Fld. | Hutchinson | 1 | 1.12K | 52.9K | by Jan 1993 – Apr 2002 |
| Timberstar-Sanford G-6-237031 | Buckhorn Operating LLC only | Angie (James Lime) | San Augustine | 1 | 978 | 3.09M | Mar 2008 – Aug 2026 |
| Timberstar-Sanford G-6-237029 | Buckhorn Operating LLC only | Angie (James Lime) | San Augustine | 1 | 869 | 2.49M | Mar 2008 – Aug 2026 |
| Great Plains-Sanford G-14-27109 | High River Res Operating, LLC only | Panhandle, West (Red Cave) | Hutchinson | 1 | 864 | 60.2K | by Jan 1993 – Aug 2026 |
| Sanford Gray -P- O-10-27734 | Diamond M Oil Co., Inc. only | Pecos Valley (High Gravity) | Pecos | 4 | 783 | 589 | by Jan 1993 – Mar 1998 |
| Timberstar-Sanford G-6-237027 | Buckhorn Operating LLC only | Angie (James Lime) | Shelby | 1 | 782 | 1.54M | Mar 2008 – Aug 2026 |
| Sanford, J. M. O-14-722 | Lera only | Panhandle Hutchinson County Fld. | Hutchinson | 5 | 585 | 10.1K | Jan 1995 – Feb 1999 |
| Sanford Gray O-10-37728 | COG Operating LLC only | Double "L" (Wolfcamp) | Pecos | 1 | 525 | 10.4K | Dec 2003 – Feb 2010 |
| Shaffer-Sanford O-14-2725 | Losure, Ken only | Panhandle Hutchinson County Fld. | Hutchinson | 2 | 486 | 12.9K | by Jan 1993 – Feb 2000 |
| Sanford-Coon "B" O-14-4760 | Lera only | Panhandle Hutchinson County Fld. | Hutchinson | 1 | 432 | 8.33K | by Jan 1993 – Dec 1995 |
| North American-Sanford G-14-23800 | High River Res Operating, LLC only | Panhandle, West | Hutchinson | 1 | 217 | 482K | by Jan 1993 – Aug 2026 |
| Hensley 453 O-9-14314 | Petrosource Energy Corporation only | Sanford (Fry) | Runnels | 1 | 168 | 9 | Apr 1993 – Dec 1993 |
| Mizel-Sanford G-14-23811 | High River Res Operating, LLC only | Panhandle, West | Hutchinson | 1 | 167 | 343K | by Jan 1993 – Jul 2023 |