| Stone-Robb E45C O-10-58146 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 271K | 215K | Sep 2022 – Aug 2026 |
| Paine, Robert G. O-3-24091 | Enhanced Energy Partners Corp only | Raccoon Bend (Gutowsky, Efb) | Austin | 7 | 270K | 106K | Nov 2001 – Aug 2026 |
| Wharton, A. B. Jr. "a" Joa O-11-68699 | Sabinal Energy Operating, LLC only | Robertson, N. (San Andres) | Gaines | 11 | 268K | 20.9K | Aug 2004 – Feb 2020 |
| McFarland, Robert et Al O-3-12539 | Texas Petroleum Investment Co. only | Pledger (Frio 7040) | Brazoria | 4 | 264K | 384K | by Jan 1993 – Nov 2023 |
| Queen Robyn W2W2 O O-10-61408 | Civitas Permian Operating, LLC only | Sandbar (Bone Spring) | Loving | 1 | 259K | 2.16M | Mar 2024 – Aug 2026 |
| Glasscock -U- Fee O-10-25434 | XTO Energy Inc. only | Roberta (Queen) | Glasscock | 8 | 258K | 38 | by Jan 1993 – Dec 2022 |
| Robert Walker Unit Zav A O-1-17819 | Exco Operating Company, LP only | Briscoe Ranch (Eagleford) | Zavala | 1 | 257K | 91.2K | Sep 2014 – Aug 2026 |
| Roberts 50 O-8-28313 | Blackrock Operating, LLC only | E 115 (Miss. Cons.) | Shackelford | 2 | 257K | 1.16M | Oct 1997 – Jul 2026 |
| Robbie 17-8 O-9-19246 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Upton | 1 | 254K | 838K | Nov 2015 – Aug 2026 |
| Robbins OL Unit O-3-22012 | Redbud E & P, Inc. only | Giddings (Austin Chalk-3) | Fayette | 1 | 253K | 2.47M | Apr 1993 – Aug 2026 |
| Pietsch, Robert O-3-21617 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Fayette | 1 | 249K | 1.97M | by Jan 1993 – Aug 2026 |
| Robtann O-8-26659 | Scout Energy Management LLC only | Sprague (Cisco) | Nolan | 2 | 245K | 8.63K | by Jan 1993 – Aug 2026 |
| Storie, S. C. O-11-12633 | Robert C. Brower, LLC only | Storie (San Andres) | Garza | 3 | 243K | 66.4K | by Jan 1993 – Aug 2026 |
| Robinson 5 O-10-40024 | RKI Exploration & Production LLC only | Red Bluff (Brushy Canyon) | Loving | 7 | 238K | 217K | May 2009 – May 2013 |
| Settles, W. R. -A- O-10-10445 | Wash, Robert C. Inc. only | Howard Glasscock | Howard | 14 | 234K | 118 | by Jan 1993 – Nov 2011 |
| Kelly-Roberts O-10-32327 | Citation Oil & Gas Corp. only | Howard-Glasscock (Wolfcamp 7400) | Howard | 3 | 233K | 1.31M | by Jan 1993 – Sep 2020 |
| Elam O-11-68669 | Sabinal Energy Operating, LLC only | Robertson, N. (San Andres) | Gaines | 4 | 232K | 54.4K | Dec 2003 – Feb 2020 |
| Spearman, Robt. "B" O-3-24263 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 228K | 415K | Aug 2001 – Jul 2026 |
| Robinson O-11-68589 | Schalk Oil Company, Inc. only | Soldier Mound (Tannehill) | Dickens | 1 | 228K | 22 | Jun 2003 – Aug 2026 |
| Roberts, Dora O-10-2675 | Apache Corporation only | Howard Glasscock | Howard | 14 | 226K | 23 | by Jan 1993 – Nov 2011 |
| Robertson, Joe 2 O-13-28190 | BKM Production only | Sherman (Ordivician 9,450) | Grayson | 1 | 224K | 1.62M | by Jan 1993 – Aug 2026 |
| Robin O-1-20154 | Warwick-Artemis, LLC only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 221K | 197K | Nov 2019 – Aug 2026 |
| Roberts & Mueller O-3-7295 | Big Lake Corporation only | High Island | Chambers | 8 | 220K | 80.4K | by Jan 1993 – Aug 2026 |
| Queen Robyn E2E2 X O-10-61291 | Civitas Permian Operating, LLC only | Sandbar (Bone Spring) | Loving | 1 | 220K | 1.6M | Mar 2024 – Aug 2026 |
| Roberts, Dora, -A- O-10-2810 | Sheridan Production Company, LLC only | Howard Glasscock | Howard | 21 | 219K | 1.93K | by Jan 1993 – Nov 2011 |
| Myra Robinson O-10-41680 | New Height Energy, LLC only | Spraberry (Trend Area) | Martin | 4 | 217K | 1.11M | Jul 2011 – May 2026 |
| Stone-Robb E45A O-10-58038 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 216K | 172K | Sep 2022 – Aug 2026 |
| Robert Kotara C O-1-20600 | Warwick-Artemis, LLC only | Eagleville (Eagle Ford-1) | Wilson | 1 | 215K | 135K | Mar 2022 – Aug 2026 |
| J. Rob Fleming (Allocation) O-3-27530 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Madison | 2 | 213K | 163K | May 2018 – Jul 2026 |
| Exxon Fee "B" O-11-65277 | Citation Oil & Gas Corp. only | Robertson, N. (Devonian) | Gaines | 4 | 213K | 54.6K | by Jan 1993 – Aug 2026 |
| Stone-Robb E45D O-10-58107 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 212K | 252K | Sep 2022 – Aug 2026 |
| Robyn O-3-27580 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Milam | 1 | 211K | 381K | May 2019 – Aug 2026 |
| Stark, Mattye E. O-11-67735 | Q Natural Resources, LLC only | Robertson | Gaines | 2 | 210K | 85.4K | May 1997 – Apr 2026 |
| Roberts, Dora -Bde- O-10-22386 | Sheridan Production Company, LLC only | Howard-Glasscock (Glorieta) | Howard | 19 | 208K | 42.2K | by Jan 1993 – Nov 2011 |
| Robinson O-13-33731 | Assent Energy Partners, LLC only | Short Grass Prairie (Cong) | Hardeman | 2 | 201K | 373K | Nov 2017 – Aug 2026 |
| South Roberdeau Unit O-10-33479 | Kneupper Oil, LLC only | Roberdeau, S. (Clear Fork Lower) | Crane | 25 | 200K | 6.67K | by Jan 1993 – Aug 2026 |
| Beicker Roberts Unit O-2-10774 | Devon Energy Production Co, L.P. only | Eagleville (Eagle Ford-2) | Karnes | 2 | 198K | 347K | Mar 2014 – Aug 2026 |
| Robertson, J. B. '16' O-11-68408 | Bce-Mach III LLC only | Harris | Gaines | 3 | 197K | 37.6K | May 2001 – Aug 2026 |
| Roberts-Schafer 6A O-10-45118 | Crescent Energy Operating, LLC only | Jailhouse (Fusselman) | Glasscock | 1 | 195K | 397K | Feb 2014 – Jul 2026 |
| Robert Kotara A O-1-20603 | Warwick-Artemis, LLC only | Eagleville (Eagle Ford-1) | Wilson | 1 | 194K | 116K | Mar 2022 – Aug 2026 |
| Exxon Fee "B" O-11-69601 | Citation Oil & Gas Corp. only | Robertson, N. (San Andres) | Gaines | 12 | 193K | 87K | Aug 2010 – Nov 2013 |
| Roberts G-3-187473 | Noble Energy Inc only | Iowa Colony (9700 Vicksburg) | Brazoria | 1 | 190K | 3.74M | Dec 2001 – Apr 2006 |
| Exxon-Shell Fee O-11-62113 | Citation Oil & Gas Corp. only | Robertson, N. (San Andres) | Gaines | 13 | 190K | 257K | by Jan 1993 – Nov 2013 |
| Direct-Robert-Gross SA G-2-295934 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | Karnes | 1 | 189K | 807K | Jun 2023 – Aug 2026 |
| Roberts, Dora Yates Waterflood O-10-17475 | Apache Corporation only | Howard Glasscock | Howard | 20 | 189K | 23 | by Jan 1993 – Nov 2011 |
| Fulton, C. T. O-13-30390 | Robertson-Bryce Management, LLC only | Pottsboro, West (Davis Sd.) | Grayson | 1 | 187K | 1.35M | Jun 2004 – Aug 2026 |
| Clay, H. R. O-10-2738 | Wash, Robert C. Inc. only | Howard Glasscock | Glasscock | 27 | 186K | 45 | by Jan 1993 – Nov 2011 |
| Krobot, F.J. "a" Unit O-3-15534 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 184K | 1.04M | by Jan 1993 – Jul 2026 |
| Queen Robyn E2W2 S O-10-61409 | Civitas Permian Operating, LLC only | Sandbar (Bone Spring) | Loving | 1 | 180K | 978K | Mar 2024 – Aug 2026 |
| Robinson Bros O-3-26275 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Brazos | 1 | 180K | 76.7K | Jan 2013 – Jul 2026 |