| University Block 9 O-10-39152 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 79 | 9.2M | 13.9M | Jan 2009 – Apr 2026 |
| University BLK.9 /Wolfcamp/ Unit O-10-15046 | XTO Energy Inc. only | University Block 9 (Wolfcamp) | Andrews | 66 | 3.83M | 7.63M | Jan 1993 – Apr 2026 |
| University Block 9 /Penn/ Unit O-10-21413 | XTO Energy Inc. only | University Block 9 (Penn.) | Andrews | 70 | 3.56M | 7.45M | Jan 1993 – Apr 2026 |
| University 9 Cec O-10-35926 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 9 | 1.63M | 1.05M | Nov 1998 – Dec 2008 |
| University "9" -D- O-10-10089 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 10 | 1.19M | 764K | Jan 1993 – Dec 2008 |
| University "9" -CE- O-10-7042 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 7 | 1.03M | 548K | Jan 1993 – Dec 2008 |
| University "9" -B- O-10-8560 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 10 | 971K | 608K | Jan 1993 – Dec 2008 |
| State University -At- O-10-9844 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 8 | 945K | 786K | Jan 1993 – Dec 2008 |
| State University -AU- O-10-9559 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 8 | 939K | 602K | Jan 1993 – Dec 2008 |
| Texas N O-10-36228 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 6 | 869K | 720K | Feb 2000 – Dec 2008 |
| State University -AO- O-10-8898 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 11 | 832K | 423K | Jan 1993 – Dec 2008 |
| University "9" -A- O-10-7044 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 6 | 782K | 564K | Jan 1993 – Dec 2008 |
| State University -BA- O-10-10786 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 5 | 763K | 712K | Jan 1993 – Dec 2008 |
| State of Texas BH O-10-36533 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 2 | 616K | 390K | Dec 2000 – Dec 2008 |
| University -DJ- R/a -A- O-10-33522 | Enervest Operating, L.L.C. only | University Block 9 (Wolfcamp) | Andrews | 5 | 557K | 360K | Jan 1993 – Feb 2016 |
| University "9" C O-10-35370 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 6 | 553K | 363K | May 1997 – Dec 2008 |
| University -JC- O-10-32724 | Morningstar Operating LLC only | University Block 9 (Penn.) | Andrews | 4 | 517K | 1.39M | Jan 1993 – Apr 2026 |
| Texas -Q- O-10-9766 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 8 | 436K | 221K | Jan 1993 – Dec 2008 |
| Brangus University O-10-34556 | Morningstar Operating LLC only | University Block 9 (Penn.) | Andrews | 3 | 427K | 273K | Jul 1995 – Apr 2026 |
| University Block 9 G MS O-10-52174 | XTO Energy Inc. only | Emma (Mississippian) | Andrews | 1 | 356K | 703K | May 2019 – Apr 2026 |
| Texas -L- O-10-7045 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 5 | 340K | 177K | Jan 1993 – Dec 2008 |
| University 9 Cee O-10-35959 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 2 | 240K | 120K | Jan 1999 – Dec 2008 |
| Phillips University "DD" O-10-33786 | Morningstar Operating LLC only | University Block 9 (Wolfcamp) | Andrews | 3 | 184K | 166K | Apr 1993 – Apr 2026 |
| University "9" -E- O-10-37378 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 1 | 172K | 174K | Aug 2004 – Dec 2008 |
| University "JF" O-10-33905 | Chevron Midcontinent, L.P. only | University Block 9 (Wolfcamp) | Andrews | 1 | 152K | 300K | Jun 1993 – Aug 2020 |
| University 9 H O-10-36384 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 3 | 118K | 73.7K | Jul 2000 – Dec 2008 |
| University 1 Sabrina O-10-38490 | Zarvona Energy LLC only | University Block 9 (Penn.) | Andrews | 1 | 83.8K | 163K | Oct 2007 – Apr 2022 |
| Antelope University O-10-32801 | Nadel and Gussman Permian,l.l.c. only | University Block 9 (Penn.) | Andrews | 4 | 79.8K | 275K | Jan 1993 – Feb 2009 |
| University "JC" O-10-33864 | Morningstar Operating LLC only | University Block 9 (Wolfcamp) | Andrews | 1 | 78K | 173K | May 1993 – Apr 2026 |
| University 9-5 A O-10-36704 | Winn Operating, LLC only | University Block 9 (Wolfcamp) | Andrews | 1 | 66.3K | 29.2K | Jun 2001 – Apr 2026 |
| Phillips University -GG- O-10-32979 | Morningstar Operating LLC only | University Block 9 (Penn.) | Andrews | 1 | 65.2K | 42.7K | Jan 1993 – Apr 2026 |
| University "9" AA O-10-36645 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 1 | 64.8K | 47.4K | Feb 2001 – Dec 2008 |
| University 9 "AB" O-10-37803 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 1 | 59.9K | 30.2K | Apr 2006 – Dec 2008 |
| University 9-AA- O-10-48656 | Citation Oil & Gas Corp. only | University Block 9 (Penn.) | Andrews | 1 | 55.3K | 47.5K | Oct 2016 – Apr 2026 |
| University -JB- O-10-32576 | BC Operating, Inc. only | University Block 9 (Penn.) | Andrews | 3 | 54.1K | 159K | Jan 1993 – Sep 2008 |
| University -927- O-10-30170 | Thompson, J. Cleo only | University Block 9 (Penn.) | Andrews | 1 | 52.2K | 5.99K | Jan 1993 – Jul 2014 |
| Parker, J. E. -D- O-10-30931 | Platform Operating, LLC only | University Block 9 (Penn.) | Andrews | 2 | 50.8K | 10.9K | Jan 1993 – Apr 2026 |
| University "JA" O-10-33113 | Morningstar Operating LLC only | University Block 9 (Wolfcamp) | Andrews | 2 | 44.4K | 82.4K | Jan 1993 – Apr 2026 |
| University -L- O-10-13655 | Mammoth Exploration LLC only | University Block 9 (Wolfcamp) | Andrews | 1 | 39.8K | 58.7K | Jan 1993 – May 2018 |
| University "9"AB O-10-7041 | Cross Timbers Operating Company only | University Block 9 (Devonian) | Andrews | 1 | 33.7K | 15K | Jan 1993 – Oct 1998 |
| University -DJ- R/a -A- O-10-13432 | Enervest Operating, L.L.C. only | University Block 9 (Penn.) | Andrews | 6 | 33.4K | 15.3K | Jan 1993 – Nov 1993 |
| Univ BLK 9 Devonian Pooled Unit O-10-36833 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 1 | 29.7K | 16.8K | Mar 2002 – Dec 2008 |
| University "9" -F- O-10-7043 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 1 | 24.7K | 13.4K | Apr 2008 – Dec 2008 |
| University 9-5 O-10-36556 | Winn Operating, LLC only | University Block 9 (Wolfcamp) | Andrews | 1 | 23K | 21.7K | Dec 2000 – Apr 2026 |
| University -JA O-10-32274 | Union Oil Company of California only | University Block 9 (Penn.) | Andrews | 1 | 10.6K | 36.3K | Jan 1993 – Aug 1995 |
| University 9 -AA- O-10-32362 | XTO Energy Inc. only | University Block 9 (Penn.) | Andrews | 1 | 7.33K | 3.95K | Jan 1993 – Oct 1998 |
| Phillips University DD O-10-31393 | Morningstar Operating LLC only | University Block 9 (Penn.) | Andrews | 3 | 7.01K | 3.02K | Jan 1993 – Apr 1994 |
| University JF O-10-32411 | Union Oil Company of California only | University Block 9 (Penn.) | Andrews | 1 | 4.37K | 5.75K | Jan 1993 – May 1993 |
| Parker, J.E. -AC- O-10-30711 | Union Oil Company of California only | University Block 9 (Penn.) | Andrews | 2 | 1.82K | 2.53K | Jan 1993 – Jun 1993 |
| University "F" O-10-39283 | Nadel and Gussman Permian,l.l.c. only | University Block 9 (Penn.) | Andrews | 1 | 1.72K | 892 | Jun 2008 – Sep 2013 |