| Geye G-8-246776 | Interstate Explorations LLC | Brown Co. Regular (Marble Falls) | 1 | 8.04K | 258K | Dec 2008 – Apr 2026 |
| Hearn-Smith G-8-104494 | Xta Resources LLC | Lil Audrey (Comyn) | 1 | 3.15K | 49.9K | Jan 1993 – Mar 2019 |
| Ringhoffer,a. H. G-8-132382 | Southwest Gas Systems, Inc. | Brown County Regular | 1 | 2.36K | 129K | Jan 1993 – Apr 2026 |
| Allen,e.a. G-8-124413 | Southwest Gas Systems, Inc. | Williams (Marble Falls) | 1 | 2.25K | 930K | Jan 1993 – Apr 2026 |
| Taber "A" G-8-184626 | KLH Oil & Gas, Inc. | Dillard (Marble Falls) | 1 | 1.86K | 31.1K | Aug 2001 – Apr 2026 |
| Stone Jennie G-8-63463 | Southwest Gas Systems, Inc. | Brown Co. Regular (Marble Falls) | 1 | 1.85K | 57.9K | Jan 1993 – Apr 2026 |
| Pitcock Cattle Company "C" G-8-115128 | Pitcock, Inc. | Brown Co. Regular (Marble Falls) | 1 | 1.75K | 78.6K | Jan 1993 – Apr 2026 |
| Stover, Don "C" G-8-160263 | Southwest Gas Systems, Inc. | Williams (Marble Falls) | 1 | 1.54K | 339K | Aug 1996 – Apr 2026 |
| Murphree, W.E. "A" G-8-122365 | Southwest Gas Systems, Inc. | Bbb&c, BLK.3 (Marble Falls) | 1 | 1.52K | 50.3K | Jan 1993 – Apr 2026 |
| Sage-Keller "A" G-8-130606 | Friendly Energy Services, Inc. | Thrifty, S. (Chappel Reef) | 1 | 1.36K | 8.07K | May 1996 – Feb 2011 |
| Hearn-Smith G-8-102975 | Xta Resources LLC | Lil Audrey (Comyn) | 1 | 1.13K | 8.08K | Jan 1993 – Mar 2019 |
| Kelly, J. L. G-8-152776 | O Hill Enterprises, Inc. | Brown County Regular | 1 | 1.11K | 20.3K | Feb 1995 – Jul 2004 |
| Renfro G-8-142624 | Southwest Gas Systems, Inc. | Locker (Duffer) | 1 | 1.1K | 55.6K | Jan 1993 – Apr 2026 |
| Chandler, Francis G-8-168234 | Arnot, W. G., Jr. | Brown Co. Regular (Marble Falls) | 1 | 1.05K | 24.3K | Jun 1998 – Apr 2000 |
| Williams H.C. -B- G-8-63664 | Southwest Gas Systems, Inc. | Brown Co. Regular (Marble Falls) | 1 | 991 | 60.8K | Jul 2001 – Apr 2026 |
| Thompson G-8-101989 | Southwest Gas Systems, Inc. | Brown Co. Regular (Marble Falls) | 1 | 968 | 178K | Jan 1993 – Apr 2026 |
| Cate,j. G-8-114817 | C O G Company | COG (Marble Falls) | 1 | 912 | 161K | Jan 1993 – Apr 2026 |
| Newton, Ross J. "B" G-8-265378 | Paratus Petroleum LLC | Brown County Regular | 1 | 906 | 40.9K | Sep 2012 – Apr 2026 |
| West Marion E. G-8-68995 | Southwest Gas Systems, Inc. | Brown Co. Regular (Marble Falls) | 1 | 848 | 270K | Dec 1996 – Apr 2026 |
| Garms-Leathwood G-8-126405 | Southwest Gas Systems, Inc. | Williams (Marble Falls) | 1 | 769 | 152K | Jan 1993 – Apr 2026 |
| SRC-Garms Leatherwood G-8-127014 | Bayou Operating Company, Inc. | Williams (Marble Falls) | 1 | 727 | 578K | Jan 1993 – Apr 2026 |
| Pitcock Cattle Company G-8-115323 | Pitcock, Inc. | Brown County Regular | 1 | 701 | 96.6K | Jan 1993 – Apr 2026 |
| Reid, M.J. G-8-124509 | Levisay Operating Co. | M.j.reid (Marble Falls) | 1 | 670 | 80.8K | Jan 1993 – Dec 2024 |
| Kelly, J. L. G-8-152780 | O Hill Enterprises, Inc. | Brown County Regular | 1 | 647 | 22.2K | Feb 1995 – Jun 2006 |
| Cate, Mitcham G-8-105367 | C O G Company | COG (Marble Falls) | 1 | 635 | 114K | Jan 1993 – Apr 2026 |
| Kilgore, W. F. G-8-57440 | Southwest Gas Systems, Inc. | Brown Co. Regular (Marble Falls) | 1 | 614 | 60K | Jan 1993 – Apr 2026 |
| Thompson G-8-158070 | Southwest Gas Systems, Inc. | Brown County Regular | 1 | 610 | 70.3K | May 1996 – Apr 2026 |
| Garms G-8-124412 | Southwest Gas Systems, Inc. | Williams (Marble Falls) | 1 | 582 | 121K | Jan 1993 – May 2010 |
| Woods, Maudie "A" G-8-100400 | Southwest Gas Systems, Inc. | Bbb&c, BLK.3 (Marble Falls) | 1 | 498 | 86.1K | Jan 1993 – Apr 2026 |
| Madison, F.H. "E" G-8-123474 | Southwest Gas Systems, Inc. | Brown County Regular | 1 | 457 | 213K | Jan 1993 – Apr 2026 |
| Slack G-8-112786 | Ames Oil | Lil Audrey (Comyn) | 1 | 457 | 48.6K | Jan 1993 – Sep 2012 |
| Allcorn, H. L., et Al G-8-35109 | Southwest Gas Systems, Inc. | Brown Co. Regular (Marble Falls) | 1 | 455 | 31.8K | Jan 1993 – Apr 2026 |
| Hays, Tom "B" G-8-115904 | Cedar Ridge Energy, Inc. | Brown County Regular | 1 | 427 | 56.7K | Jan 1993 – Jan 2017 |
| Bibby, J.C. G-8-152274 | Southwest Gas Systems, Inc. | Brown County Regular | 1 | 425 | 45.5K | Nov 1994 – Apr 2026 |
| Bradfor, J. M. Heirs G-8-135888 | Ogden Resources Corporation | Murdoch (Duffer) | 1 | 362 | 70.4K | Jan 1993 – Jun 2000 |
| Stover, Don "C" G-8-159744 | Southwest Gas Systems, Inc. | Williams (Marble Falls) | 1 | 355 | 150K | Aug 1996 – Apr 2026 |
| Holt, C. F. G-8-31879 | Southwest Gas Systems, Inc. | Brown Co. Regular (Marble Falls) | 1 | 355 | 209K | Jan 1993 – Apr 2026 |
| Palmer, T. W. G-8-45319 | Southwest Gas Systems, Inc. | Brown County Regular | 1 | 353 | 154K | Jan 1993 – Apr 2026 |
| Keeler,c.a. G-8-125730 | Circle D Oil & Gas, Inc. | Delay (Duffer) | 1 | 342 | 17.5K | Jan 1993 – Jul 2006 |
| Keeler, C.A. G-8-125729 | Circle D Oil & Gas, Inc. | Delay (Duffer) | 1 | 324 | 17.5K | Jan 1993 – Jul 2006 |
| Guthrie, Hubert L. G-8-130664 | Southwest Gas Systems, Inc. | Brownie F. (Caddo) | 1 | 300 | 6.07K | Jan 1993 – Jan 1999 |
| Madison, Frank H. "F" G-8-83791 | Southwest Gas Systems, Inc. | Brown Co. Regular (Marble Falls) | 1 | 299 | 113K | Jan 1993 – Apr 2026 |
| Bibby, J. C. G-8-152495 | Southwest Gas Systems, Inc. | J. S. Lewis (Marble Falls) | 1 | 276 | 44.5K | Nov 1994 – Mar 2020 |
| Bibby, J. C. G-8-152515 | Southwest Gas Systems, Inc. | J. S. Lewis (Marble Falls) | 1 | 275 | 57.4K | Dec 1994 – Apr 2026 |
| Bucy "A" G-8-90047 | Southwest Gas Systems, Inc. | Brown Co. Regular (Marble Falls) | 1 | 270 | 122K | Jan 1993 – Apr 2026 |
| Thompson G-8-101988 | Southwest Gas Systems, Inc. | Brown Co. Regular (Marble Falls) | 1 | 249 | 139K | Jan 1993 – Apr 2026 |
| Keller, C. A. G-8-155424 | Reach Oil | Brown County Regular | 1 | 246 | 25.5K | Jul 1995 – Jan 2026 |
| Garms -A- G-8-118820 | Southwest Gas Systems, Inc. | Williams (Marble Falls) | 1 | 233 | 221K | Jan 1993 – Apr 2026 |
| Carey, Cleve W. G-8-137486 | Expanding Energy Corporation | Magnum (Congl) | 1 | 232 | 555 | Apr 1993 – Jul 1993 |
| Hays, Tom G-8-119875 | Watson, B. G. | Brown County Regular | 1 | 229 | 14.9K | Jan 1993 – Dec 1996 |