| 1 | 21ST Century Investment Corp | Tulsa, OK 74114 | Oil & Gas Operator | Apr 2000 |
| 2 | 3tec Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 3 | Action Oil Co Inc | Farmington, NM 87499 | Oil Operator | Mar 2021 |
| 4 | Advanced Wireless Communications LLC | Farmington, NM 87401 | Oil & Gas Operator | Sep 2024 |
| 5 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 6 | Alpine Oil & Gas Corp | Durango, CO 81302 | Gas Operator | Jun 2003 |
| 7 | Amax Oil & Gas Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2014 |
| 8 | Anderson Oil LTD.,LLP | Farmington, NM 87499 | Oil & Gas Operator | Sep 2024 |
| 9 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Nov 2024 |
| 10 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 11 | Bannon Energy Inc | Houston, TX 77068 | Oil & Gas Operator | Jun 1998 |
| 12 | Basin Minerals Inc | Farmington, NM 87402 | Oil & Gas Operator | Mar 2005 |
| 13 | Basin Minerals LTD | Farmington, NM 87402 | Oil & Gas Operator | Feb 2005 |
| 14 | Basin Minerals Operating Company | Dripping Springs, TX 78620 | Oil & Gas Operator | Oct 2017 |
| 15 | Bco Inc | Santa Fe, NM BADADDR | Oil & Gas Operator | Jan 1995 |
| 16 | Beartooth Oil & Gas Company | Billings, MT 59103 | Oil & Gas Operator | Sep 2024 |
| 17 | Benson-Montin-Greer DRLG Corp | Farmington, NM 87402 | Oil & Gas Operator | Sep 2024 |
| 18 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Sep 2024 |
| 19 | Billco Energy Inc | La Plata, NM 87418 | Oil & Gas Operator | Sep 2003 |
| 20 | Biya Operators Inc. | Littleton, CO 80160 | Oil Operator | Apr 2019 |
| 21 | BK Petroleum Inc | Farmington, NM 87499 | Oil & Gas Operator | Jun 1998 |
| 22 | Blackwood & Nichols LTD PTR | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 1996 |
| 23 | Bledsoe Petro Corporation | Dallas, TX 75201 | Oil & Gas Operator | Dec 2000 |
| 24 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Sep 2024 |
| 25 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2024 |
| 26 | Bridgecreek Resources (Colorado), LLC | Littleton, CO 80120 | Oil & Gas Operator | Sep 2024 |
| 27 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 28 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Nov 2024 |
| 29 | Caerus Southern Rockies LLC | Denver, CO 80202 | Gas Operator | Nov 2017 |
| 30 | Calpine Natural Gas Company L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 31 | Calpine Natural Gas L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2006 |
| 32 | Carbon Energy Corporation (USA) | Denver, CO 80290 | Oil & Gas Operator | Jul 2004 |
| 33 | Catamount Energy Partners LLC | Denver, CO 80202 | Gas Operator | Sep 2024 |
| 34 | Central Resources Inc | Denver, CO 80203 | Oil & Gas Operator | Dec 2019 |
| 35 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Nov 2024 |
| 36 | Chaparral Oil & Gas Co | Aztec, NM 87410 | Gas Operator | Sep 2024 |
| 37 | Charger Resources, LLC | Hurst, TX 76054 | Oil & Gas Operator | Aug 2015 |
| 38 | Chateau Oil And Gas, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 2017 |
| 39 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jul 2024 |
| 40 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Nov 2024 |
| 41 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Nov 2024 |
| 42 | Chuza Oil Company | Farmington, NM 87402 | Oil Operator | Dec 2017 |
| 43 | Clifford C. Or Mary A. Terry | Dadeville, AL 36853 | Oil Operator | Feb 2003 |
| 44 | Coleman Oil & Gas Inc | Farmington, NM 87499 | Oil & Gas Operator | Jan 2023 |
| 45 | Colt Resources Corporation | Billings, MT 59103 | Oil & Gas Operator | Feb 2013 |
| 46 | Condor Oil Corp | Boulder, CO 80303 | Oil & Gas Operator | Dec 1994 |
| 47 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 48 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Nov 2024 |
| 49 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 50 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 51 | Coronado Energy E&P Company, LLC | Houston, TX 77252 | Oil & Gas Operator | Dec 2010 |
| 52 | Crawley Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 2024 |
| 53 | Cross Creek Corporation | Duncan, OK 73534 | Oil & Gas Operator | Mar 1999 |
| 54 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2024 |
| 55 | Curtis J Little | Farmington, NM 87499 | Oil & Gas Operator | Aug 2005 |
| 56 | D J Simmons, Inc | Farmington, NM 87499 | Oil & Gas Operator | Apr 2020 |
| 57 | David H Arrington Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Sep 2024 |
| 58 | Denveramerican Petroleum, A LTD Liability Co | Denver, CO 80203 | Oil & Gas Operator | Sep 1997 |
| 59 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 2024 |
| 60 | DJR Operating, LLC | Farmington, NM 87401 | Oil & Gas Operator | Sep 2024 |
| 61 | Dominion Exploration & Production Inc | Houston, TX 77060 | Oil & Gas Operator | Apr 2015 |
| 62 | Dominion Oklahoma Texas Expl & Prod Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2013 |
| 63 | Doyle E Baxter | Bloomfield, NM 87413 | Oil Operator | Feb 2005 |
| 64 | Dugan Production Corp | Farmington, NM 87499 | Oil & Gas Operator | Sep 2024 |
| 65 | E L Fundingsland | Littleton, CO 80160 | Oil & Gas Operator | Jun 2016 |
| 66 | Edwards Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 67 | El Pamco Inc | Albuquerque, NM 87191 | Gas Operator | Mar 2020 |
| 68 | Eland Energy Inc | Dallas, TX 75248 | Oil & Gas Operator | Sep 2024 |
| 69 | Elk San Juan, LLC | Midland, TX 79701 | Oil & Gas Operator | Feb 2014 |
| 70 | Elliott Oil Co | Roswell, NM 88202 | Oil & Gas Operator | Nov 2001 |
| 71 | Elm Ridge Exploration Company LLC | Bloomfield, NM 87413 | Oil & Gas Operator | Nov 2017 |
| 72 | Emerald Gas Operating Co | Durango, CO 81301 | Gas Operator | Aug 1996 |
| 73 | Enduring Resources, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Sep 2024 |
| 74 | Enerdyne, LLC | Albuquerque, NM 87123 | Oil & Gas Operator | Jun 2024 |
| 75 | Energen Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2021 |
| 76 | Energy Reserves Group | Houston, TX 770563020 | Oil & Gas Operator | Apr 1996 |
| 77 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 78 | Enervest San Juan Operating LLC | Durango, CO 81301 | Gas Operator | Jul 2001 |
| 79 | Engineering & Production Service, Inc. | Farmington, NM 87499 | Oil & Gas Operator | Sep 2024 |
| 80 | EOG Y Resources Inc | Artesia, NM 88210 | Oil & Gas Operator | Feb 2019 |
| 81 | Epic Energy LLC | Aztec, NM 87410 | Oil & Gas Operator | Sep 2024 |
| 82 | F & M Oil & Gas Co | Midland, TX 79702 | Oil & Gas Operator | Feb 2000 |
| 83 | Floyd Oil Co | Houston, TX 77002 | Oil & Gas Operator | Nov 1999 |
| 84 | Floyd Operating Company | Houston, TX 77002 | Oil & Gas Operator | Jul 2004 |
| 85 | Four Corners Exploration Co | Farmington, NM 87499 | Oil & Gas Operator | Sep 2024 |
| 86 | Four Star Oil & Gas Company | Houston, TX 77252 | Oil & Gas Operator | Jun 2024 |
| 87 | Four Starr Energy, Inc. | Dallas, TX 75243 | Gas Operator | May 2016 |
| 88 | Four Starr Production, LLC | Dallas, TX 75243 | Oil & Gas Operator | Nov 2024 |
| 89 | Fuller Petroleum Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 90 | Fuller Production, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 91 | General Minerals Corp | Oklahoma City, OK 73105 | Oil & Gas Operator | Dec 2015 |
| 92 | Gerry Thames | Tulsa, OK 74107 | Gas Operator | Mar 2008 |
| 93 | Giant Exploration & Prod Co | Farmington, NM 87499 | Oil & Gas Operator | Dec 2009 |
| 94 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | Nov 2024 |
| 95 | Great Lakes Chemical Corporation | West Lafayette, IN 47906 | Oil & Gas Operator | Nov 2023 |
| 96 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | Nov 2024 |
| 97 | Greenwood Holdings Inc | Englewood, CO BADADDR | Oil & Gas Operator | Jul 1995 |
| 98 | H & S Production | Farmington, NM 87401 | Oil Operator | Dec 2007 |
| 99 | Hallador Petroleum LLP | Denver, CO 80264 | Oil & Gas Operator | Feb 2019 |
| 100 | Harken Southwest Corp | Dallas, TX 752612007 | Oil & Gas Operator | Feb 2001 |