| 1 | 44 Canyon LLC | | Gas Operator | Mar 2006 |
| 2 | Advanced Wireless Communications LLC | Farmington, NM 87401 | Oil & Gas Operator | Feb 2024 |
| 3 | Alan Howard Karchmer Living Trust | | Oil Operator | Dec 2022 |
| 4 | American Petroleum Energy Co | | Gas Operator | Feb 2024 |
| 5 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 6 | Apache Corporation | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 7 | Arkoma Operations LLC | | Oil & Gas Operator | Jan 2024 |
| 8 | Bayless Producer LLC* Robert L | | Oil & Gas Operator | Feb 2024 |
| 9 | Beeman Oil & Gas LLC | | Oil & Gas Operator | Feb 2024 |
| 10 | Benson-Montin-Greer DRLG Corp | Farmington, NM 87402 | Oil & Gas Operator | Feb 2024 |
| 11 | Big Run Production Company | Tyler, TX 75701 | Oil & Gas Operator | Apr 2024 |
| 12 | Black Hills Exploration & Production Inc | Newcastle, WY 82701 | Oil & Gas Operator | May 2018 |
| 13 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 14 | Burlington Resources Oil & Gas LP | | Oil & Gas Operator | Feb 2020 |
| 15 | Catamount Energy Partners LLC | Denver, CO 80202 | Gas Operator | Feb 2024 |
| 16 | Cci Paradox Upstream LLC | | Oil & Gas Operator | Nov 2023 |
| 17 | CDX Rockies LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2005 |
| 18 | Cedar Ridge LLC | | Oil & Gas Operator | Oct 2006 |
| 19 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 20 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 21 | Coleman Oil & Gas Inc | Farmington, NM 87499 | Oil & Gas Operator | Jan 2023 |
| 22 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 23 | Dugan Production Corp | Farmington, NM 87499 | Oil & Gas Operator | Feb 2024 |
| 24 | Elm Ridge Exploration Company LLC | Bloomfield, NM 87413 | Oil & Gas Operator | Nov 2017 |
| 25 | Enduring Resources, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Jan 2024 |
| 26 | Energen Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2021 |
| 27 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 28 | Enervest San Juan Operating | | Gas Operator | Jul 2001 |
| 29 | Epic Energy LLC | Aztec, NM 87410 | Oil & Gas Operator | Jan 2024 |
| 30 | Faulconer Inc* Vernon E | | Gas Operator | Dec 2018 |
| 31 | Four Corners Energy, LLC | Gulf Breeze, FL 32563 | Oil & Gas Operator | Apr 2024 |
| 32 | Four Star Oil & Gas Company | Houston, TX 77252 | Oil & Gas Operator | Nov 2023 |
| 33 | Fritz & Digman Inc | | Oil Operator | Feb 2024 |
| 34 | Fritzler Resources, Inc. | Fort Morgan, CO 80701 | Oil & Gas Operator | Dec 2023 |
| 35 | Gosney & Sons Inc | | Gas Operator | Jun 2019 |
| 36 | Gould & Associates* Joseph B | | Gas Operator | Sep 2002 |
| 37 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2023 |
| 38 | Hathaway Operators, Inc | | Oil & Gas Operator | Dec 2000 |
| 39 | High River Resources Operating LLC | Farmington, NM 87401 | Oil & Gas Operator | Feb 2024 |
| 40 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Apr 2024 |
| 41 | Holcomb Oil & Gas Inc | Farmington, NM 87401 | Oil & Gas Operator | Jan 2024 |
| 42 | Hubbs III, LLC | | Oil & Gas Operator | Mar 2024 |
| 43 | Huber Corporation* J M | | Oil & Gas Operator | Feb 2008 |
| 44 | Huntington Energy LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2024 |
| 45 | K W B Oil Property MGMT Inc | | Oil & Gas Operator | Jun 2000 |
| 46 | Logos Operating LLC | Farmington, NM 87401 | Oil & Gas Operator | Feb 2024 |
| 47 | Mallon Oil Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2005 |
| 48 | Maralex Resources Inc | Ignacio, CO 81137 | Oil & Gas Operator | Feb 2024 |
| 49 | Markwest Resources Inc | Englewood, CO 801125004 | Oil & Gas Operator | Jun 2003 |
| 50 | McElvain Energy Inc | Denver, CO 80265 | Oil & Gas Operator | Nov 2019 |
| 51 | Merrion Oil & Gas Corp | Farmington, NM 87401 | Oil & Gas Operator | Feb 2024 |
| 52 | Morningstar Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2024 |
| 53 | Murchison Oil & Gas Inc | Plano, TX 75024 | Oil & Gas Operator | Feb 2024 |
| 54 | Murchison Trusts | | Gas Operator | Sep 2003 |
| 55 | P & M Petroleum Management LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 56 | Pan American Petroleum Corp | | Oil & Gas Operator | Jan 2008 |
| 57 | Petrogulf Corporation | Denver, CO 80202 | Oil & Gas Operator | Apr 2024 |
| 58 | Petrox Resources Inc | Meeker, CO 81641 | Oil & Gas Operator | Feb 2024 |
| 59 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2023 |
| 60 | Questar Expl. And Prod. Co. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jul 2011 |
| 61 | Red Mesa Holdings/O&G LLC | | Oil & Gas Operator | Nov 2014 |
| 62 | Red Willow Production Company | | Oil & Gas Operator | Jan 2024 |
| 63 | Rim Operating, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Apr 2024 |
| 64 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 65 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Jan 2024 |
| 66 | SG Interests I LTD | Houston, TX 77007 | Oil & Gas Operator | Mar 2024 |
| 67 | Simcoe LLC | Durango, CO 81301 | Oil & Gas Operator | Feb 2024 |
| 68 | Simmons, Inc.* D. J. | | Oil & Gas Operator | May 2020 |
| 69 | Southland Royalty Company LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2021 |
| 70 | Stewart Petroleum Corporation | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Dec 2023 |
| 71 | Synergy Operating LLC | Farmington, NM 87499 | Oil & Gas Operator | Feb 2024 |
| 72 | Terra Exploration & Production Co. Inc. | | Oil & Gas Operator | Dec 2009 |
| 73 | Texaco Expl. And Prod. Inc. | Houston, TX 77236 | Oil & Gas Operator | Dec 2023 |
| 74 | Universal Resources Corp. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jan 2000 |
| 75 | Vastar Resources Inc | Houston, TX 77253 | Oil & Gas Operator | Dec 2023 |
| 76 | Vitruvian Exploration LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2016 |
| 77 | Western Gas Resources Inc | Denver, CO 80202-1955 | Oil & Gas Operator | Dec 2007 |
| 78 | Western Interior Energy Inc. | Denver, CO 80202 | Oil & Gas Operator | Jul 2020 |
| 79 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2024 |
| 80 | Williford Resources LLC | Tulsa, OK 74136-1020 | Oil & Gas Operator | Jan 2024 |
| 81 | WPX Energy Production LLC | Tulsa, OK 741013102 | Oil & Gas Operator | Nov 2020 |
| 82 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2024 |