| Nimitz Unit 187-188W O-10-53721 | Apache Corporation only | Wolfbone (Trend Area) | Reeves | 4 | 1.08M | 3.31M | Sep 2019 – Apr 2026 |
| Frijole 34-187 Unit G-10-285131 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Ward | 1 | 715K | 2.74M | Nov 2018 – Apr 2026 |
| Refried 34-187 Unit G-10-288698 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Ward | 1 | 628K | 2.64M | Jul 2019 – Apr 2026 |
| Refried 34-187 Unit G-10-290774 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Ward | 1 | 401K | 2.62M | Dec 2020 – Apr 2026 |
| Sugg a 185-187 (Alloc-H) O-9-19590 | Crescent Energy Operating, LLC only | Spraberry (Trend Area) | Reagan | 1 | 325K | 3.65M | Apr 2017 – Apr 2026 |
| Sugg a 185-187 (Alloc-G) O-9-19577 | Crescent Energy Operating, LLC only | Spraberry (Trend Area) | Reagan | 1 | 282K | 4.62M | Mar 2017 – Apr 2026 |
| Wrigley 187 O-10-41439 | Apache Corporation only | Wolfbone (Trend Area) | Reeves | 2 | 281K | 481K | Dec 2010 – May 2020 |
| Nimitz 187-188E O-10-56679 | Apache Corporation only | Wolfbone (Trend Area) | Reeves | 1 | 275K | 755K | Oct 2021 – Apr 2026 |
| Graham 186-187 (Alloc-D) O-9-19581 | Crescent Energy Operating, LLC only | Spraberry (Trend Area) | Reagan | 2 | 268K | 5.26M | Apr 2017 – Apr 2026 |
| Frijole 34-187 Unit G-10-290823 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Ward | 1 | 234K | 1.41M | Dec 2020 – Apr 2026 |
| Sugg a 185-187 (Alloc-F) O-9-19585 | Crescent Energy Operating, LLC only | Spraberry (Trend Area) | Reagan | 1 | 204K | 3.46M | Apr 2017 – Apr 2026 |
| Graham 186-187 (Alloc-B) O-9-18729 | Crescent Energy Operating, LLC only | Spraberry (Trend Area) | Reagan | 1 | 201K | 1.07M | Jun 2014 – Apr 2026 |
| Graham 186-187 (Alloc-G) O-9-18730 | Crescent Energy Operating, LLC only | Spraberry (Trend Area) | Reagan | 1 | 127K | 1.16M | Jul 2014 – Apr 2026 |
| Graham 186-187 (Alloc-E) O-9-19580 | Vital Energy, Inc. only | Spraberry (Trend Area) | Reagan | 1 | 125K | 2.92M | Apr 2017 – Jun 2023 |
| Devin 187 O-14-8604 | Highmark Energy Operating, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 109K | 793K | Jan 2012 – Apr 2026 |
| Hicks, J.L. 187 O-8-26846 | Bridwell Oil Co. only | Hat Top Mountain, N. (Fry Sd.) | Nolan | 1 | 90.7K | 71.1K | Feb 1993 – Apr 2026 |
| Humane Society 34-187 O-10-41560 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Ward | 1 | 86.2K | 220K | Mar 2011 – Oct 2016 |
| Burrus 187 O-14-8478 | Highmark Energy Operating, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 48.4K | 250K | Aug 2011 – Apr 2026 |
| Webb 187 G-14-270266 | Unit Petroleum Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 34.1K | 610K | Sep 2012 – Apr 2026 |
| Webb 187 G-14-267516 | Unit Petroleum Company only | Mendota, NW. (Granite Wash) | Hemphill | 1 | 33.5K | 1.64M | Mar 2012 – Apr 2026 |
| Arco -187- O-3-12069 | S & S Operating Company, Inc. only | Arco 187 (Yegua 6460) | Hardin | 1 | 23.9K | 1.66K | Jan 1993 – Nov 1996 |
| Hicks 187 O-8-31823 | Double M Petroproperties, Inc. only | Hat Top Mountain, N. (Cook Lime) | Nolan | 1 | 21K | 4.77K | Jun 2015 – Apr 2026 |
| Gex, Lutie W. -1875- O-14-4738 | BP America Production Company only | Mammoth Creek, N.(cleveland-Oil) | Lipscomb | 4 | 18.3K | 1.17M | Jan 1993 – Apr 2011 |
| BP America A-187 G-3-238927 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Jasper | 1 | 17K | 3.26M | Aug 2008 – Apr 2026 |
| Hicks 187 O-8-31633 | Double M Petroproperties, Inc. only | Arriba Libra (Caddo) | Nolan | 1 | 16.6K | 85.1K | Sep 2014 – Apr 2026 |
| Kynette, P. O-1-11997 | Atlas Operating LLC only | Campana, South (1870 Sand) | McMullen | 1 | 15.2K | 21 | Jan 1993 – Sep 1996 |
| Wrigley 187E O-10-51716 | Apache Corporation only | Wolfbone (Trend Area) | Reeves | 1 | 13.9K | 13.9K | Jul 2019 – Sep 2021 |
| Humane Society 34-187 O-10-48580 | Anadarko E&P Onshore LLC only | Sandbar (Bone Spring) | Ward | 1 | 7.83K | 21.9K | Nov 2016 – Aug 2018 |
| Huston Estate -1187- O-14-3972 | Courson Oil & Gas, Inc. only | Allen-Parker (Marmaton) | Ochiltree | 1 | 6.44K | 6.2K | Jan 1993 – Oct 2009 |
| Arco 186 O-3-21146 | S & S Operating Company, Inc. only | Arco 187 (Yegua 6800) | Hardin | 1 | 5.92K | 1.72K | Jan 1993 – Jun 1995 |
| Graham 186-187 (Alloc-E) G-9-295522 | Crescent Energy Operating, LLC only | Spraberry (Trend Area) | Reagan | 1 | 3.8K | 1.04M | Jul 2023 – Apr 2026 |
| Gouger, H. E. Fee /NCT-1/ O-1-189 | Texaco E & P Inc. only | Campana, South (1870 Sand) | McMullen | 1 | 3.25K | 2.46K | Jan 1993 – Jan 1994 |
| Flying Elf 187 G-4-239741 | Killam Oil Co., Ltd. only | West Tiger (Wilcox Cons.) | Duval | 1 | 1.54K | 1.46M | Feb 2008 – Aug 2016 |
| BP America a-187 Unit G-6-234793 | Anadarko E&P Company LP only | Brookeland (Austin Chalk, 8800) | Jasper | 1 | 1.51K | 525K | Feb 2008 – Jul 2008 |
| Charlie 187 O-14-8456 | Mesa Vista Operating, LLC only | Ruler (Granite Wash) | Roberts | 1 | 1.17K | 33.4K | Jul 2011 – May 2016 |
| Wrigley 187 O-10-41401 | Thompson, J. Cleo only | Hoban (Bone Springs) | Reeves | 1 | 1.13K | 0 | Nov 2010 – Nov 2010 |
| Duke Wilson 187 G-9-214003 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 746 | 49.1K | Aug 2005 – Oct 2024 |
| Monroe SW 187 G-9-192662 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 703 | 1.7M | Nov 2002 – Apr 2026 |
| Bain, J. C. #1879 O-5-2270 | Kathler Oil Interests only | Corsicana (Shallow) | Ellis | 3 | 618 | 17 | Jan 1993 – Jul 2000 |
| Duke Wilson 187 G-9-204495 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 367 | 731K | May 2003 – Apr 2026 |
| Wilson, Duke 187 G-9-239696 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 330 | 491K | Dec 2007 – Apr 2026 |
| Geaslin 187 G-9-160057 | Fasken Oil and Ranch, Ltd. only | Geaslin (Wolfcamp) | Terrell | 1 | 287 | 44.3K | Jul 1996 – May 2009 |
| Geaslin NW "187" G-9-208285 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 271 | 355K | Dec 2004 – Apr 2026 |
| Wilson, Duke 187 G-9-204835 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 244 | 840K | Jan 2004 – Apr 2026 |
| Terrell G-3-127330 | Tomcat Exploration, Inc only | Clay, N.E. (Austin Chalk 11870) | Brazos | 1 | 225 | 18.1K | Jan 1993 – Oct 1995 |
| Duke Wilson 187 G-9-204501 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 167 | 422K | May 2003 – Jan 2024 |
| Wilson, Duke 187 G-9-204686 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 148 | 586K | Jul 2003 – Apr 2026 |
| Monroe SW 187 G-9-193909 | BRP Energy, LLC only | Geaslin (Wolfcamp) | Terrell | 1 | 118 | 409K | Mar 2003 – Apr 2026 |
| M. G. Lillie 1873 G-1-280540 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 117 | 3.28M | Dec 2017 – Jan 2026 |
| LM 1870 G-1-264729 | EOG Resources, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 100 | 980K | Jul 2011 – Apr 2026 |