| Zant-Hurt-Blalock Unit 1 O-10-49005 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 13 | 3.67M | 14.6M | Dec 2017 – Aug 2026 |
| Zant Hurt Blalock East Unit 1 O-10-52730 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 5 | 1.76M | 3.15M | May 2019 – Aug 2026 |
| Glasscock -N- Fee O-10-29129 | XTO Energy Inc. only | Blalock Lake, SE (Wolfcamp) | Glasscock | 11 | 1.68M | 3.22M | by Jan 1993 – Nov 2019 |
| Powell "9A" O-10-33849 | OXY USA Inc. only | Blalock Lake,s.(wolfcamp) | Glasscock | 1 | 1.57M | 2.25M | Jun 1993 – Dec 2017 |
| Powell "9D" O-10-34307 | OXY USA Inc. only | Blalock Lake,s.(wolfcamp) | Glasscock | 1 | 930K | 1.71M | Oct 1994 – Mar 2015 |
| Blalock 1382 O-10-57372 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 2 | 845K | 2.56M | Jul 2022 – Aug 2026 |
| Powell "16A" O-10-33684 | OXY USA Inc. only | Blalock Lake,s.(wolfcamp) | Glasscock | 1 | 778K | 556K | Feb 1993 – Oct 2019 |
| 'L' Fee-Calverley Unit O-10-33979 | XTO Energy Inc. only | Blalock Lake, SE (Wolfcamp) | Glasscock | 1 | 753K | 1.04M | Oct 1993 – Nov 2019 |
| Glasscock -L- Fee O-10-32273 | XTO Energy Inc. only | Blalock Lake, SE (Wolfcamp) | Glasscock | 10 | 711K | 1.77M | by Jan 1993 – Nov 2019 |
| Powell, E. L. "C" O-10-23291 | Occidental Permian Ltd. only | Blalock Lake,s.(wolfcamp) | Glasscock | 2 | 697K | 2.82M | by Jan 1993 – Jun 2017 |
| Blalock 1313 O-10-57257 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 2 | 669K | 1.9M | Jun 2022 – Aug 2026 |
| 7613 JV-P Calverley -26- O-10-28560 | Parsley Energy Operations, LLC only | Blalock Lake, SE (Wolfcamp) | Glasscock | 9 | 669K | 1.31M | by Jan 1993 – Nov 2019 |
| Powell,e.l."b" O-10-23191 | Occidental Permian Ltd. only | Blalock Lake,s.(wolfcamp) | Glasscock | 3 | 655K | 1.24M | by Jan 1993 – Jun 2017 |
| Blalock 1321 O-10-57419 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 2 | 647K | 2.48M | Aug 2022 – Aug 2026 |
| Blalock 1323 O-10-57515 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 2 | 604K | 2.01M | Jun 2022 – Aug 2026 |
| Blalock 1329 O-10-51367 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 590K | 864K | Nov 2018 – Aug 2026 |
| Blalock 1301 O-10-54681 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 567K | 1.49M | Jul 2020 – Aug 2026 |
| 8102 JV-P Glass -C- O-10-30064 | Parsley Energy Operations, LLC only | Blalock Lake, SE (Wolfcamp) | Glasscock | 5 | 506K | 1.95M | by Jan 1993 – May 2017 |
| Blalock 1319 O-10-51321 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 494K | 901K | Nov 2018 – Aug 2026 |
| 7613 JV-P Cox -B- O-10-26714 | Parsley Energy Operations, LLC only | Blalock Lake, SE (Wolfcamp) | Glasscock | 8 | 489K | 1.74M | by Jan 1993 – Apr 2017 |
| Blalock 1309 O-10-51681 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 440K | 1.18M | Dec 2018 – Aug 2026 |
| Blalock 1311 O-10-57427 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 398K | 1.16M | Aug 2022 – Aug 2026 |
| Blalock 1322 O-10-57418 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 369K | 924K | Dec 2021 – Aug 2026 |
| Hillger, Glenn W. "A" O-10-26744 | Fed Operating LLC only | Blalock Lake, E. (Wolfcamp) | Glasscock | 2 | 350K | 1M | by Jan 1993 – Nov 2019 |
| Calverley -24- O-10-27117 | Endeavor Energy Resources L.P. only | Blalock Lake, E. (Wolfcamp) | Glasscock | 5 | 350K | 962K | by Jan 1993 – Nov 2019 |
| Zant-Hurt-Blalock Unit 1 4814 O-10-52981 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 325K | 735K | May 2019 – Aug 2026 |
| Calverly, Steve, Jr "B" O-10-24461 | Endeavor Energy Resources L.P. only | Blalock Lake, E. (Wolfcamp) | Glasscock | 6 | 324K | 788K | by Jan 1993 – Mar 2013 |
| Blalock 1384 O-10-56921 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 317K | 743K | Jun 2022 – Aug 2026 |
| 7613 JV-P U. R. C. "A" O-10-35377 | Parsley Energy Operations, LLC only | Blalock Lake,s.(wolfcamp) | Glasscock | 3 | 311K | 459K | Jun 1997 – Aug 2019 |
| Blalock, Lois O-10-39455 | Royalty Land & Dev. Co., Inc. only | Spraberry (Trend Area) | Glasscock | 9 | 288K | 1.06M | May 2009 – Aug 2026 |
| Blalock C O-10-40539 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 3 | 243K | 1.43M | Oct 2010 – Aug 2026 |
| 7613 JV-P Cox -G- O-10-34364 | Parsley Energy Operations, LLC only | Blalock Lake, SE (Wolfcamp) | Glasscock | 1 | 233K | 353K | Jan 1995 – Dec 2018 |
| Blalock 1324 O-10-57256 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 1 | 228K | 544K | Jun 2022 – Aug 2026 |
| 7613 JV-P Cox -F- O-10-35185 | Parsley Energy Operations, LLC only | Blalock Lake,s.(wolfcamp) | Glasscock | 1 | 211K | 157K | Jan 1997 – Oct 2016 |
| Blalock/Zant O-10-33779 | OXY USA Inc. only | Blalock (Wolfcamp) | Glasscock | 1 | 208K | 867K | Apr 1993 – May 2019 |
| Becknell, E. E. O-10-23349 | Fed Operating LLC only | Blalock Lake, E. (Wolfcamp) | Glasscock | 1 | 195K | 960K | by Jan 1993 – Nov 2019 |
| 8102 JV-P Fry O-10-28048 | Pioneer Natural Res. USA, Inc. only | Blalock Lake, SE (Wolfcamp) | Glasscock | 3 | 195K | 495K | by Jan 1993 – May 2018 |
| 8102 JV-P Glass -B- O-10-27303 | Parsley Energy Operations, LLC only | Blalock Lake, E. (Wolfcamp) | Glasscock | 1 | 189K | 392K | by Jan 1993 – Oct 2017 |
| 8102 JV-P Calverley -B- O-10-35597 | Parsley Energy Operations, LLC only | Blalock Lake,s.(wolfcamp) | Glasscock | 1 | 183K | 219K | Nov 1997 – Aug 2019 |
| Blalock O-10-28869 | Royalty Land & Dev. Co., Inc. only | Dewey Lake (Wolfcamp) | Glasscock | 5 | 183K | 395K | by Jan 1993 – Aug 2019 |
| 8102 JV-P Gibson O-10-27958 | Parsley Energy Operations, LLC only | Blalock Lake, SE (Wolfcamp) | Glasscock | 6 | 175K | 407K | by Jan 1993 – Oct 2018 |
| Powell "9B" O-10-34207 | OXY USA Inc. only | Blalock Lake,s.(wolfcamp) | Glasscock | 1 | 168K | 164K | Jul 1994 – Sep 2019 |
| 7613 JV-P Cox O-10-24732 | Parsley Energy Operations, LLC only | Blalock Lake,s.(wolfcamp) | Glasscock | 1 | 164K | 999K | by Jan 1993 – Mar 2015 |
| 'M' Fee-Powell Unit O-10-36285 | DE3 Operating LLC only | Blalock Lake, SE (Wolfcamp) | Glasscock | 1 | 164K | 614K | Apr 2000 – Nov 2019 |
| Hillger, Bertha O-10-23897 | Fed Operating LLC only | Blalock Lake, E. (Wolfcamp) | Glasscock | 1 | 151K | 304K | by Jan 1993 – Aug 2019 |
| 9807 JV-P Flanagan "A" O-10-36060 | Parsley Energy Operations, LLC only | Blalock Lake,s.(wolfcamp) | Glasscock | 1 | 133K | 252K | Aug 1999 – Jun 2019 |
| Blalock E O-10-41983 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 2 | 130K | 738K | Aug 2011 – Aug 2026 |
| Blalock O-10-39648 | XTO Energy Inc. only | Spraberry (Trend Area) | Glasscock | 3 | 122K | 879K | Oct 2009 – Aug 2026 |
| 8102 JV-P Calverley -B- O-10-35000 | Parsley Energy Operations, LLC only | Blalock Lake, SE (Wolfcamp) | Glasscock | 1 | 121K | 278K | Jul 1996 – Feb 2017 |
| 7613 JV-P Cox -D- O-10-28274 | Parsley Energy Operations, LLC only | Blalock Lake,s.(wolfcamp) | Glasscock | 1 | 121K | 329K | by Jan 1993 – Dec 2016 |