| Moncrief, Mattie O-7-8049 | Basa Resources, Inc. only | East Texas | Gregg | 66 | 4.04M | 1.83M | by Jan 1993 – Aug 2026 |
| Harris, T. B. & T. D. O-7-6952 | Basa Resources, Inc. only | East Texas | Gregg | 35 | 3.05M | 1.06M | by Jan 1993 – Aug 2026 |
| King, A. A. -B- O-7-8040 | Basa Resources, Inc. only | East Texas | Gregg | 133 | 2.84M | 1.52M | by Jan 1993 – Aug 2026 |
| Persons, J. C. O-7-7589 | Basa Resources, Inc. only | East Texas | Gregg | 31 | 2.38M | 1.03M | by Jan 1993 – Aug 2026 |
| Lake Devernia O-7-8366 | Basa Resources, Inc. only | East Texas | Gregg | 54 | 2.33M | 1.25M | by Jan 1993 – Aug 2026 |
| Nettleton, E. M. -a- & -B- O-7-8391 | Basa Resources, Inc. only | East Texas | Gregg | 30 | 2.27M | 940K | by Jan 1993 – Aug 2026 |
| Harris, T. B. O-7-6113 | ZTH Operating, LLC only | East Texas | Gregg | 19 | 1.86M | 919K | by Jan 1993 – Aug 2026 |
| Ingram, L. C. O-7-8275 | Basa Resources, Inc. only | East Texas | Gregg | 33 | 1.81M | 1.08M | by Jan 1993 – Aug 2026 |
| Akin, J. W. -B- O-7-8025 | Basa Resources, Inc. only | East Texas | Gregg | 24 | 1.81M | 797K | by Jan 1993 – Aug 2026 |
| Custer, Minnie M. O-7-7518 | Basa Resources, Inc. only | East Texas | Gregg | 15 | 1.75M | 690K | by Jan 1993 – Jun 2024 |
| Smith -E- O-7-6398 | Basa Resources, Inc. only | East Texas | Gregg | 16 | 1.74M | 710K | by Jan 1993 – Aug 2026 |
| Todd-Stinchcomb (Mobil) O-7-8177 | Basa Resources, Inc. only | East Texas | Gregg | 22 | 1.74M | 780K | by Jan 1993 – Aug 2026 |
| Akin O-7-6352 | Basa Resources, Inc. only | East Texas | Gregg | 24 | 1.66M | 720K | by Jan 1993 – Aug 2026 |
| Sheppard, M. O. O-7-6846 | Basa Resources, Inc. only | East Texas | Gregg | 69 | 1.64M | 743K | by Jan 1993 – Aug 2026 |
| Rembert, F. T. O-7-6724 | Basa Resources, Inc. only | East Texas | Gregg | 17 | 1.63M | 648K | by Jan 1993 – Aug 2026 |
| Lacy & Snyder O-7-6833 | Basa Resources, Inc. only | East Texas | Gregg | 21 | 1.6M | 546K | by Jan 1993 – Dec 2008 |
| Akin, J. W. O-7-7928 | Basa Resources, Inc. only | East Texas | Gregg | 23 | 1.54M | 627K | by Jan 1993 – Aug 2026 |
| Smith, S. G. & Maud -B- O-7-7615 | Basa Resources, Inc. only | East Texas | Gregg | 16 | 1.52M | 628K | by Jan 1993 – Aug 2026 |
| Adrain-McCrary O-7-7484 | Basa Resources, Inc. only | East Texas | Gregg | 14 | 1.51M | 661K | by Jan 1993 – Aug 2026 |
| Davis, Arch -a- & -B- O-7-8364 | Basa Resources, Inc. only | East Texas | Gregg | 27 | 1.49M | 565K | by Jan 1993 – Aug 2026 |
| Hearne, L. R. O-7-6020 | Northern Pacific Oil Incorporatd only | East Texas | Gregg | 21 | 1.43M | 553K | by Jan 1993 – Dec 2020 |
| Moore, Boston O-7-8388 | Basa Resources, Inc. only | East Texas | Gregg | 18 | 1.43M | 415K | by Jan 1993 – Aug 2026 |
| Campbell, J. N. O-7-8233 | Basa Resources, Inc. only | East Texas | Gregg | 21 | 1.42M | 777K | by Jan 1993 – Aug 2026 |
| Akin, J. W. -A- O-7-8024 | Basa Resources, Inc. only | East Texas | Gregg | 19 | 1.39M | 694K | by Jan 1993 – Aug 2026 |
| Harris, T. B. (Conoco) O-7-6426 | Zivney Energy only | East Texas | Gregg | 16 | 1.36M | 566K | by Jan 1993 – Dec 2025 |
| Fisher, Caddie "B" O-7-7884 | Bbhp Oilfield Services LLC only | East Texas | Gregg | 22 | 1.33M | 467K | by Jan 1993 – Aug 2026 |
| Bingham, Laura O-7-7142 | Basa Resources, Inc. only | East Texas | Gregg | 20 | 1.32M | 435K | by Jan 1993 – Aug 2026 |
| Fisher O-7-6100 | Basa Resources, Inc. only | East Texas | Gregg | 14 | 1.32M | 572K | by Jan 1993 – Aug 2026 |
| Cox & Hamon O-7-7516 | Basa Resources, Inc. only | East Texas | Gregg | 15 | 1.22M | 490K | by Jan 1993 – Aug 2026 |
| Albright, Oliver J. O-7-7486 | Basa Resources, Inc. only | East Texas | Gregg | 18 | 1.21M | 585K | by Jan 1993 – Aug 2026 |
| Fishburn, S. C. O-7-6816 | Basa Resources, Inc. only | East Texas | Gregg | 40 | 1.19M | 559K | by Jan 1993 – Aug 2026 |
| Hays O-7-6114 | Basa Resources, Inc. only | East Texas | Gregg | 89 | 1.18M | 698K | by Jan 1993 – Aug 2026 |
| Whatley, E. M. R/a -A- O-7-7637 | Basa Resources, Inc. only | East Texas | Gregg | 11 | 1.17M | 500K | by Jan 1993 – Aug 2026 |
| Bumpus O-7-6358 | Basa Resources, Inc. only | East Texas | Gregg | 19 | 1.15M | 614K | by Jan 1993 – Aug 2026 |
| Hopkins, Pet O-7-7546 | Basa Resources, Inc. only | East Texas | Gregg | 21 | 1.14M | 599K | by Jan 1993 – Aug 2026 |
| Smith, Fannie O-7-7613 | Basa Resources, Inc. only | East Texas | Gregg | 14 | 1.14M | 461K | by Jan 1993 – Aug 2026 |
| Hampton O-7-7129 | Basa Resources, Inc. only | East Texas | Gregg | 33 | 1.11M | 598K | by Jan 1993 – Aug 2026 |
| Satterwhite, M. C. O-7-8258 | Basa Resources, Inc. only | East Texas | Gregg | 18 | 1.07M | 565K | by Jan 1993 – Aug 2026 |
| Pritchard 100A O-7-7425 | Basa Resources, Inc. only | East Texas | Gregg | 22 | 1.07M | 397K | by Jan 1993 – Aug 2026 |
| Stinchcomb, T. B. O-7-7996 | Basa Resources, Inc. only | East Texas | Gregg | 20 | 1.05M | 430K | by Jan 1993 – Aug 2026 |
| Harris, T. B. (Texaco) O-7-7959 | Bbhp Oilfield Services LLC only | East Texas | Gregg | 13 | 1.05M | 385K | by Jan 1993 – Aug 2026 |
| Ziegler, Irene O-7-8187 | Basa Resources, Inc. only | East Texas | Gregg | 16 | 1.02M | 339K | by Jan 1993 – Aug 2026 |
| Lee -C- O-7-6382 | Basa Resources, Inc. only | East Texas | Gregg | 10 | 994K | 432K | by Jan 1993 – Aug 2026 |
| Lathrop -C- O-7-6380 | Basa Resources, Inc. only | East Texas | Gregg | 20 | 989K | 491K | by Jan 1993 – Aug 2026 |
| Smith -D- O-7-6397 | Basa Resources, Inc. only | East Texas | Gregg | 12 | 985K | 437K | by Jan 1993 – Aug 2026 |
| Fee O-7-6448 | 4-Sight Operating Company, Ltd. only | East Texas | Gregg | 19 | 976K | 351K | by Jan 1993 – Mar 2026 |
| Tate, G. W. O-7-8176 | Basa Resources, Inc. only | East Texas | Gregg | 13 | 976K | 355K | by Jan 1993 – Aug 2026 |
| Bolton O-7-6356 | Basa Resources, Inc. only | East Texas | Gregg | 10 | 967K | 349K | by Jan 1993 – Mar 2025 |
| McPherson -B- O-7-6391 | Basa Resources, Inc. only | East Texas | Gregg | 13 | 961K | 484K | by Jan 1993 – Aug 2026 |
| Williams, J. R. O-7-8057 | Basa Resources, Inc. only | East Texas | Gregg | 24 | 953K | 439K | by Jan 1993 – Aug 2026 |