| Holland G-3-174013 | Helmerich & Payne, Inc. only | Hilderbrandt Bayou, N. (9300) | Jefferson | 1 | 182K | 2.61M | Apr 1999 – Mar 2001 |
| Elmer Graves 615 G-14-278488 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 92.4K | 879K | Jul 2014 – 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 |
| Holland G-3-180316 | Helmerich & Payne, Inc. only | Hilderbrandt Bayou, N. (9300) | Jefferson | 1 | 20K | 495K | Oct 2000 – Apr 2002 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| Sparks, Elmer E. G-14-141465 | Mmgl Txph, LLC only | Glazier (Morrow Upper) | Hemphill | 1 | 2.39K | 413K | by Jan 1993 – May 2018 |
| Velmer Mae G-3-165321 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk, Gas) | Grimes | 1 | 1.59K | 1.82M | Oct 1997 – Aug 2026 |
| Helmers - Pullen G-9-149328 | Diversified Operating Corp. only | Kurland Bow Tye (Strawn Sand) | Schleicher | 1 | 1.34K | 195K | Apr 1994 – May 1995 |
| Robinson, Elmer G-13-147258 | Scout Energy Management LLC only | Chico, West (Conglomerate 5700) | Wise | 1 | 1.05K | 452K | Sep 1993 – Aug 2026 |
| Pletcher G-14-77301 | Helmerich & Payne, Inc. only | Wheeler-Pan (Hunton, NW.) | Wheeler | 1 | 957 | 620K | by Jan 1993 – Dec 1997 |
| Helmers G-9-133441 | Lavanco Energy, Inc. only | Kurland Bow Tye (Strawn Sand) | Schleicher | 1 | 945 | 343K | by Jan 1993 – Nov 2004 |
| Helmers "A" G-9-141166 | Lavanco Energy, Ltd. only | Kurland Bow Tye (Strawn Sand) | Schleicher | 1 | 839 | 371K | by Jan 1993 – Mar 2018 |
| Quinn G-3-179571 | Helmerich & Payne, Inc. only | Lovells Lake, N. (7800) | Jefferson | 1 | 430 | 380K | Aug 2000 – Jun 2001 |
| Helmers G-9-144115 | Lavanco Energy, Inc. only | Kurland Bow Tye (Strawn Sand) | Schleicher | 1 | 265 | 375K | by Jan 1993 – Nov 2004 |
| Sparks, Elmer E. -A- G-14-116994 | Apache Corporation only | Glazier (Morrow Upper) | Hemphill | 1 | 147 | 41.1K | by Jan 1993 – Mar 1999 |
| Musselman G/U G-2-200952 | Brayton Operating Corp. only | Elmer Kolle (Frio 4500) | Victoria | 1 | 41 | 197K | Jan 2004 – Jan 2006 |
| Elmer G-10-193861 | Crescent Energy Operating, LLC only | Vermejo, E. (Atoka) | Ward | 1 | 35 | 2.23M | Aug 2002 – Apr 2023 |
| Elmer Hoover Hatton Estate "13" G-9-157705 | Scout Energy Management LLC only | Ozona (Canyon Sand) | Crockett | 1 | 8 | 118K | Jan 1996 – Aug 2026 |
| Brown G-14-57191 | Helmerich & Payne, Inc. only | Buffalo Wallow (Morrow) | Hemphill | 1 | 0 | 0 | — |
| Ruschhaupt G-2-152140 | Scully Energy Corporation only | Elmer Kolle (Sandy 3500) | Victoria | 1 | 0 | 2.01K | Nov 1994 – Jan 1995 |
| Allen G-2-202961 | Brayton Operating Corp. only | Elmer Kolle (Bob 3400) | Victoria | 1 | 0 | 74.4K | Jan 2004 – Mar 2005 |
| Meek-Koontz G-2-214415 | Alta Mesa Services, LP only | Elmer Kolle (Frio 3775) | Victoria | 1 | 0 | 249K | Feb 2005 – Dec 2007 |
| Meek G-2-214421 | Brayton Operating Corp. only | Elmer Kolle (Sandy 3500) | Victoria | 1 | 0 | 77.1K | Jun 2005 – May 2006 |
| Meek G-2-214886 | Gaither Petroleum Corporation only | Elmer Kolle (Sandy 3500) | Victoria | 1 | 0 | 8.59K | Aug 2005 – Nov 2005 |
| Meek G-2-217530 | Gaither Petroleum Corporation only | Elmer Kolle (Bob 3400) | Victoria | 1 | 0 | 56.8K | Dec 2005 – Jun 2007 |
| Grace G-3-187923 | Helmerich & Payne, Inc. only | Wildcat | Jefferson | 1 | 0 | 0 | — |
| Barefield, Elmer G-6-77641 | Rusk Co. Well Service Co., Inc. only | Shiloh (Pettit, Lower) | Rusk | 1 | 0 | 147 | Oct 2000 – Aug 2001 |
| Hester, Elmer G-8-18146 | Rice Drilling Company only | Salt Creek (Marble Falls) | Brown | 1 | 0 | 0 | — |
| Thompson, Elmer G-8-170310 | Kokomo Energy, Inc. only | Caddo (Marble Falls) | Stephens | 1 | 0 | 0 | — |
| Hendrick, T. J. & Ida G-10-19758 | Helmerich & Payne, Inc. only | Emperor (Devonian) | Winkler | 1 | 0 | 1.38K | by Jan 1993 – Jan 1994 |
| Cowden, E. W. Unit A G-10-19771 | Helmerich & Payne, Inc. only | Emperor (Devonian) | Winkler | 1 | 0 | 2.69K | by Jan 1993 – Apr 1994 |
| Hendrick, T. J. & Ida G-10-19815 | Helmerich & Payne, Inc. only | Emperor (Ellenburger) | Winkler | 1 | 0 | 0 | — |
| White & Baker -C- G-10-21064 | Helmerich & Payne, Inc. only | White & Baker (Grayburg 2000) | Pecos | 1 | 0 | 93.2K | by Jan 1993 – Dec 1996 |
| Slaughter -A- G-10-21115 | Helmerich & Payne, Inc. only | Yucca Butte (Penn. Detrital) | Pecos | 1 | 0 | 20.4K | by Jan 1993 – Feb 1997 |
| TXL 19 G-10-128791 | Helmerich & Payne, Inc. only | Greasewood (Atoka) | Reeves | 1 | 0 | 22.9K | by Jan 1993 – Dec 1994 |
| White & Baker "L" G-10-186412 | Helmerich & Payne, Inc. only | White & Baker (Grayburg 2000) | Pecos | 1 | 0 | 0 | — |