| Elmer 33-67 O-10-42530 | TRP Operating LLC only | Two Georges (Bone Spring) | Ward | 10 | 1.78M | 4.16M | Feb 2012 – Aug 2026 |
| Elmer 33-67 O-10-49615 | TRP Operating LLC only | Phantom (Wolfcamp) | Loving | 5 | 1.36M | 8.79M | Aug 2017 – Aug 2026 |
| Hitt, Elmer O-11-4625 | R2Q Operating LLC only | P. H. D. | Garza | 4 | 208K | 38.3K | by Jan 1993 – Aug 2026 |
| Holland G-3-174013 | Helmerich & Payne, Inc. only | Hilderbrandt Bayou, N. (9300) | Jefferson | 1 | 182K | 2.61M | Apr 1999 – Mar 2001 |
| Hitt, Elmer O-11-67517 | R2Q Operating LLC only | P. H. D. (Basal San Andres) | Garza | 1 | 158K | 36.3K | Feb 1996 – Jun 2019 |
| 8204 JV-P Elmer O-10-35223 | BTA Oil Producers only | Cobra (Wolfcamp) | Glasscock | 1 | 146K | 184K | Feb 1997 – Aug 2002 |
| 8204 JV-P Elmer O-10-33846 | BTA Oil Producers only | Cobra (Wolfcamp) | Glasscock | 2 | 132K | 115K | May 1993 – May 1996 |
| Elmer Graves 615 G-14-278488 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 92.4K | 879K | Jul 2014 – Aug 2026 |
| Whatley, Elmer O-6-12768 | Cass Energy LLC only | Haynes (Mitchell) | Cass | 2 | 90.2K | 21 | by Jan 1993 – Aug 2026 |
| Johnson, Elmer, G. Etal O-4-3374 | Citation Oil & Gas Corp. only | Willamar | Willacy | 1 | 83.7K | 192K | by Jan 1993 – Feb 2020 |
| McKinney, Elmer O-8-18454 | Long Trusts, The only | Herrin, N. (Strawn) | Haskell | 5 | 66.5K | 21 | by Jan 1993 – Jul 2026 |
| Johnson, Elmer O-2-7487 | McGowan Working Partners, Inc. only | Lolita, Deep (4-Way Zone) | Jackson | 2 | 66.4K | 206K | by Jan 1993 – Aug 2026 |
| Elmer Graves 615 G-14-278493 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 53.9K | 660K | Dec 2014 – Aug 2026 |
| Elmer Graves 615 G-14-278495 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 50K | 552K | Dec 2014 – Aug 2026 |
| Elmer Graves 615 G-14-278490 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 41.9K | 390K | Dec 2014 – Aug 2026 |
| Elmer Graves 615 G-14-278496 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 34.4K | 273K | Dec 2014 – Oct 2023 |
| Cordova Union -A- O-9-897 | Helmerich & Payne, Inc. only | McCamey | Upton | 3 | 34.4K | 18 | by Jan 1993 – Jul 1999 |
| Ward, Elmer O-5-2907 | J.F.W. Equipment, Inc. only | Pleasant Ridge (Woodbine) | Leon | 1 | 33.6K | 5.61K | by Jan 1993 – Mar 2023 |
| 8204 JV-P Elmer O-10-28966 | OXY USA Inc. only | Blalock Lake (Wolfcamp) | Glasscock | 1 | 25.4K | 11.9K | by Jan 1993 – Mar 2018 |
| Elmer Sparks-Bussard 63 A O-14-9891 | Mewbourne Oil Company only | Lipscomb, S.E. (Cleveland) | Hemphill | 1 | 25.3K | 59K | Feb 2026 – Aug 2026 |
| Helmers O-9-13091 | Lavanco Energy, Ltd. only | Kurland Bow Tye (Canyon Sand) | Schleicher | 3 | 24.5K | 50.5K | by Jan 1993 – Mar 2018 |
| Helmers O-9-13296 | Lavanco Energy, Ltd. only | Kurland Bow Tye (Strawn Sand) | Schleicher | 4 | 21.7K | 274K | by Jan 1993 – Mar 2018 |
| Holland G-3-180316 | Helmerich & Payne, Inc. only | Hilderbrandt Bayou, N. (9300) | Jefferson | 1 | 20K | 495K | Oct 2000 – Apr 2002 |
| Jordan, Elmer "B" O-8-18798 | Craruth Energy Corporation only | Price-Jordan (Saddle Creek) | Nolan | 2 | 18.5K | 21 | by Jan 1993 – Nov 2015 |
| Helmers "B" O-9-13403 | Remuda Operating Company only | Kurland Bow Tye (Strawn Sand) | Schleicher | 1 | 15.4K | 100K | Feb 1993 – May 2000 |
| Elmer Robinson G-13-264574 | Scout Energy Management LLC only | Newark, East (Barnett Shale) | Wise | 1 | 13.3K | 1.29M | Mar 2011 – Aug 2026 |
| O'Brien G-3-181683 | Helmerich & Payne, Inc. only | Lovells Lake, N. (7800) | Jefferson | 1 | 11.6K | 834K | Dec 2000 – Dec 2001 |
| Grant, E. D. O-13-17983 | Grant, Elmer D., Estate Of only | Montague County Regular | Montague | 5 | 11.2K | 40 | by Jan 1993 – Jun 2026 |
| 8204 JV-P Elmer O-10-52528 | OXY USA Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 10.9K | 2.1K | Oct 2020 – Aug 2026 |
| Childers, Elmer O-6-13784 | Big Run Production Company only | Jolene (Travis Peak) | Rusk | 1 | 10.1K | 380K | Nov 1997 – Jan 2010 |
| Parrish, Elmer J. -A- O-3-13401 | Torch Operating Company only | Giddings (Austin Chalk-3) | Lee | 2 | 9.99K | 110K | by Jan 1993 – Oct 1995 |
| Broussard G-3-176902 | Helmerich & Payne, Inc. only | Gilbert Woods (Nod. 2) | Jefferson | 1 | 9.1K | 445K | Jun 2000 – Jul 2001 |
| Sparks, Elmer E. "A" G-14-174102 | Presidio Petroleum LLC only | Higgins, West (Tonkawa) | Hemphill | 1 | 9.02K | 249K | Jul 1999 – Jun 2026 |
| Jordan, Elmer "A" O-8-16331 | Craruth Energy Corporation only | Price-Jordan (Saddle Creek) | Nolan | 1 | 8.94K | 21 | by Jan 1993 – Feb 2012 |
| Velmer Mae G-3-163801 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Grimes | 1 | 8.73K | 6.65M | Jun 1997 – Aug 2026 |
| Jordan, Elmer "C" O-8-23760 | Craruth Energy Corporation only | Price-Jordan (Saddle Creek) | Nolan | 4 | 7.28K | 21 | by Jan 1993 – Jul 2005 |
| Caswell, Elmer & William O-13-15709 | Caswell Bros. Oil Co. only | McCoco (Caddo Congl.) | Montague | 1 | 6.8K | 98 | by Jan 1993 – Nov 2010 |
| Robinson, Elmer O-13-23538 | Mitchell Energy Corporation only | Chico, West (Conglomerate 5700) | Wise | 3 | 5.99K | 394K | by Jan 1993 – Jul 1998 |
| Jordan, Elmer "C" O-8-21982 | Price, W. H. only | Price-Jordan (Upper Cisco) | Nolan | 2 | 5.73K | 21 | by Jan 1993 – Mar 1997 |
| Hitt, Elmer O-11-64843 | R2Q Operating LLC only | P. H. D. (Glorieta) | Garza | 2 | 5.34K | 1.07K | by Jan 1993 – Jan 1996 |
| Lena Mae G-14-127650 | Helmerich & Payne, Inc. only | Lena Mae (Morrow Upper) | Lipscomb | 1 | 5K | 112K | by Jan 1993 – Aug 1999 |
| Spraks, Elmer E. "A" G-14-189632 | Apache Corporation only | Higgins, West (Tonkawa) | Hemphill | 1 | 4.63K | 98.8K | Mar 2002 – Aug 2012 |
| Helmers "A" O-9-13360 | Smith Pipe of Abilene only | Kurland Bow Tye (Strawn Sand) | Schleicher | 2 | 4.3K | 95.7K | by Jan 1993 – Apr 1996 |
| Sparks, Elmer E. "A" O-14-5339 | Crescendo Resources, L.P. only | Higgins, West (Tonkawa) | Hemphill | 1 | 4.01K | 148K | by Jan 1993 – Jun 1999 |
| Sparks, Elmer E. G-14-116678 | Mmgl Txph, LLC only | Glazier (Morrow Upper) | Hemphill | 1 | 3.86K | 378K | by Jan 1993 – Nov 2010 |
| Collie, Elmer G-13-21342 | Citation Oil & Gas Corp. only | Crafton, West (Conglomerate) | Jack | 1 | 3.63K | 264K | by Jan 1993 – Jan 2016 |
| Krause, Elmer O-3-14611 | Geosouthern Energy Corporation only | Giddings (Austin Chalk-3) | Fayette | 1 | 3.41K | 23.2K | by Jan 1993 – Jan 1997 |
| Childers, Elmer G-6-153334 | Mustang Drilling, Inc. only | Jolene (Travis Peak) | Rusk | 1 | 2.8K | 165K | Nov 1994 – Oct 1997 |
| Seamans, Elmer G-3-86345 | SM Operating Company LLC only | Damascus (Seamans) | Polk | 1 | 2.51K | 1.53M | by Jan 1993 – Jul 2026 |
| Childers, Elmer G-6-117006 | Big Run Production Company only | Minden (Travis Peak Cons.) | Rusk | 1 | 2.41K | 451K | by Jan 1993 – Jul 2026 |