| D. Lambert G-2-249472 | Field Petroleum Corp. only | Koenig, North (Wilcox Migura) | De Witt | 1 | 12.4K | 705K | Sep 2008 – Apr 2019 |
| Lambert, M. F. O-2-8753 | Hilcorp Energy Company only | Tom Oconnor (5625 Sand) | Refugio | 2 | 11.1K | 32.3K | Nov 2002 – Apr 2005 |
| Lambert, Charlie "A" G-13-248686 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 10.9K | 2.55M | Oct 2008 – Aug 2026 |
| Lambert Gas Unit G-2-249215 | Hilcorp Energy Company only | Tom O' Connor (7800) | Refugio | 1 | 10.7K | 486K | Mar 2009 – Aug 2009 |
| M. F. Lambert O-2-10569 | Hilcorp Energy Company only | Tom Oconnor (7500) | Refugio | 1 | 10.6K | 11.9K | Jun 2013 – Mar 2014 |
| Lambert Gas Unit G-2-234216 | Hilcorp Energy Company only | Tom Oconnor (7930) | Refugio | 1 | 10K | 484K | Feb 2008 – Oct 2008 |
| M. F. Lambert O-2-9897 | Hilcorp Energy Company only | Tom Oconnor (7750) | Refugio | 1 | 9.78K | 32.1K | Jan 2012 – Apr 2013 |
| Lambert, M.F. O-2-12684 | Hilcorp Energy Company only | Tom O'Connor (5730, East) | Refugio | 1 | 9.48K | 17.5K | Apr 2023 – Aug 2026 |
| Lambert, Mary F. O-2-4888 | Hilcorp Energy Company only | Tom Oconnor (5450 Sand) | Refugio | 1 | 9.05K | 35.9K | by Jan 1993 – Dec 2008 |
| M. F. Lambert O-2-10362 | Hilcorp Energy Company only | Tom Oconnor (6600) | Refugio | 1 | 8.92K | 54.5K | Sep 2012 – Mar 2015 |
| M. F. Lambert O-2-9323 | Hilcorp Energy Company only | Tom Oconnor (5300, East) | Refugio | 4 | 8.24K | 10.8K | May 2009 – Mar 2019 |
| Lambert, Charlie "A" G-13-244121 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 8.19K | 1.47M | Sep 2008 – Aug 2026 |
| Lambert, Charlie "A" G-13-246402 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 7.24K | 1.17M | Oct 2008 – Aug 2026 |
| Lambert, M. F. G-2-84415 | Hilcorp Energy Company only | Tom Oconnor | Refugio | 1 | 7.11K | 577K | by Jan 1993 – May 2010 |
| Lambert, M F. O-2-11730 | Hilcorp Energy Company only | Tom Oconnor (5425 Sand) | Refugio | 1 | 7.02K | 457 | Jan 2019 – Apr 2025 |
| Lambert Gas Unit G-2-255564 | Hilcorp Energy Company only | Tom O'Connor (South 7700) | Refugio | 1 | 5.94K | 381K | Sep 2009 – Jan 2010 |
| McAdams Lambert Unit O-8-31140 | Scout Energy Management LLC only | Lake Trammel (Ellenburger) | Nolan | 1 | 5.9K | 626 | Nov 2012 – Jun 2015 |
| Lambert, M. F. G-2-178401 | Devon Energy Production Co, L.P. only | Tom Oconnor (7940) | Refugio | 1 | 5.87K | 35.1K | Apr 2000 – Jul 2000 |
| M. F. Lambert 'A' O-2-10448 | Hilcorp Energy Company only | Tom O'Connor (West 6700) | Refugio | 1 | 5.59K | 8.3K | Feb 2013 – Mar 2013 |
| Lambert, M.F. G-2-90036 | H & D Operating Company only | Tom Oconnor | Refugio | 1 | 5.45K | 1.15M | by Jan 1993 – Oct 2004 |
| Lambert, M. F. O-2-9103 | Hilcorp Energy Company only | Tom O'Connor (4650) | Refugio | 1 | 5.01K | 24.9K | Feb 2006 – May 2009 |
| Lambert Gas Unit G-2-242628 | Hilcorp Energy Company only | Tom O'Connor (7700) | Refugio | 1 | 4.97K | 188K | Oct 2008 – Jan 2009 |
| Lambert, M. F. O-2-9288 | Hilcorp Energy Company only | Tom O'Connor (7700) | Refugio | 1 | 4.68K | 12.3K | Feb 2009 – Nov 2009 |
| Taylor, Jay "A" O-14-4381 | Rio Petroleum, Inc. only | Lambert (Granite Wash, Up.) | Oldham | 1 | 4.25K | 733 | by Jan 1993 – Jul 1999 |
| Ltwo O-14-7758 | Arrow Oil & Gas, LLC only | Lambert 2 (Cisco) | Oldham | 1 | 3.58K | 0 | Jan 2007 – Sep 2009 |
| Lambert, M. F. G-2-145259 | Pennzoil Exploration & Prod. Co. only | Siene Bean (6300) | Refugio | 1 | 3.23K | 241K | Apr 1993 – Jul 1994 |
| Lambert, M. F. O-2-11610 | Hilcorp Energy Company only | Woodsboro, South (4200) | Refugio | 1 | 3.07K | 0 | Sep 2022 – Aug 2026 |
| Lambert O-2-7876 | Acock Engineering & Assoc., Inc. only | Siene Bean (5770) | Refugio | 1 | 2.88K | 1.94K | May 1993 – Oct 1995 |
| Lambert G-6-122680 | TGNR Gulf Coast LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 2.82K | 833K | by Jan 1993 – Aug 2026 |
| M. F. Lambert O-2-9359 | Hilcorp Energy Company only | Tom O'Connor (8000, West) | Refugio | 1 | 2.58K | 4.56K | Dec 2009 – Aug 2010 |
| Lambert, Charlie "A" G-13-186467 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 2.58K | 316K | Sep 2001 – Mar 2011 |
| Lambert, M.F. 'A' O-2-12747 | Hilcorp Energy Company only | Tom Oconnor (6600, West) | Refugio | 1 | 2.42K | 723 | Jan 2024 – Jul 2026 |
| Hanson, J. M. Est. O-1-1520 | Hollub, Lambert Drilling Company only | Salt Flat | Caldwell | 1 | 2.16K | 26 | by Jan 1993 – Mar 1995 |
| Lambert Unit O-13-28414 | Trio Operating Company, Inc. only | Chillicothe, S. (Miss. Lime) | Hardeman | 1 | 2.16K | 12 | by Jan 1993 – Dec 1993 |
| M. F. Lambert G-2-255911 | Hilcorp Energy Company only | Tom O'Connor (8000, West) | Refugio | 1 | 1.68K | 12.5K | Feb 2010 – Jan 2011 |
| M. F. Lambert O-2-9325 | Hilcorp Energy Company only | Tom Oconnor (4600) | Refugio | 1 | 1.65K | 18.7K | Jun 2009 – Feb 2011 |
| Lambert Gas Unit G-2-274195 | Hilcorp Energy Company only | Tom Oconnor (7930) | Refugio | 1 | 1.62K | 92.5K | Mar 2014 – Dec 2019 |
| Appling, Norman O-1-8073 | Hollub, Lambert Drilling Company only | Darst Creek (Buda) | Guadalupe | 1 | 1.6K | 20 | by Jan 1993 – Dec 1995 |
| Lamberton O-13-30860 | Loveless Tank Trucks, LLC only | Near (Miss) | Hardeman | 1 | 1.48K | 0 | Dec 2004 – Aug 2006 |
| Lambert G-6-212336 | TGNR Gulf Coast LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 1.47K | 388K | Apr 2005 – Mar 2018 |
| Lambert, M. F. O-2-8610 | Hilcorp Energy Company only | Tom Oconnor (5440) | Refugio | 1 | 1.4K | 15.5K | Mar 2001 – Apr 2003 |
| M. F. Lambert 151 O-2-9387 | Hilcorp Energy Company only | Tom Oconnor (6300) | Refugio | 1 | 1.36K | 190 | Mar 2010 – Sep 2010 |
| M. F. Lambert 'A' O-2-10459 | Hilcorp Energy Company only | Tom Oconnor (6600, West) | Refugio | 1 | 1.32K | 4.88K | Mar 2013 – Jun 2013 |
| Lambert, Roy L. O-8-11430 | Carrland Oil & Gas Inc. only | Jones County Regular | Jones | 1 | 1.28K | 19 | by Jan 1993 – Oct 2001 |
| Lambert, M. F. G-2-159376 | Hilcorp Energy Company only | Refugio-Fox (5500) | Refugio | 1 | 1.25K | 474K | Jun 1996 – Jul 2004 |
| Lambert, M. F. O-2-8885 | Hilcorp Energy Company only | Greta, Deep (5700) | Refugio | 1 | 998 | 53K | Aug 2004 – Oct 2006 |
| Lambert, M. F. G-2-36882 | Hilcorp Energy Company only | Tom Oconnor (4950) | Refugio | 1 | 878 | 991K | by Jan 1993 – Feb 2022 |
| Lambert, M. F. G-2-83736 | Devon Energy Production Co, L.P. only | Tom Oconnor | Refugio | 1 | 807 | 185K | by Jan 1993 – Dec 1994 |
| M. F. Lambert 151 O-2-9279 | Hilcorp Energy Company only | Tom Oconnor (7750) | Refugio | 1 | 781 | 1.58K | Dec 2008 – Feb 2009 |
| Lambert, M. F."h" O-2-4120 | Pennzoil Exploration & Prod. Co. only | Greta, Deep (5800) | Refugio | 2 | 771 | 1.8K | by Jan 1993 – Aug 1993 |