| 1 | A N R Pipeline Co | | Oil Operator | Jan 2025 |
| 2 | A N R Storage Company | | Oil Operator | Oct 2016 |
| 3 | Ace Energy LLC | Leawood, KS 66211 | Oil & Gas Operator | Nov 2025 |
| 4 | Alumni Petroleum And Resource Management Corp | | Oil Operator | Mar 1988 |
| 5 | Amoco Production Co And C M S Oil And Gas | | Oil Operator | Sep 1996 |
| 6 | Amoco Production Co And Peninsular Oil And Gas Co | | Oil Operator | Sep 1998 |
| 7 | Annex Oil Corp | | Oil Operator | Jun 2000 |
| 8 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
| 9 | Antrim Development Corp | | Oil Operator | Dec 2016 |
| 10 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |
| 11 | Apollo Exploration And Development Inc | | Oil Operator | Sep 2016 |
| 12 | Arbor Operating LLC | | Oil Operator | Dec 2016 |
| 13 | Arbor Petroleum Inc | | Oil Operator | Jan 2003 |
| 14 | Arbor Resources LLC | | Oil Operator | Dec 2007 |
| 15 | Aries Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Feb 2009 |
| 16 | Atlantic Richfield Company | Houston, TX 77079 | Oil & Gas Operator | Dec 2016 |
| 17 | Axia Energy II LLC | HGHLNDS Ranch, CO 80129 | Oil & Gas Operator | Jan 2020 |
| 18 | Aztec Producing Company Inc | | Oil Operator | Dec 2016 |
| 19 | B And C Oil Inc | | Oil Operator | Mar 2012 |
| 20 | B D Deans LLC | | Oil Operator | May 2009 |
| 21 | B H R Petroleum Inc | | Oil Operator | Apr 2006 |
| 22 | Bailer And Deshaw | | Oil Operator | Dec 2015 |
| 23 | Baldwin And Baldwin Oil Co. | Midland, TX 79702 | Oil & Gas Operator | Aug 1993 |
| 24 | Bannon Energy Inc | Houston, TX 77068 | Oil & Gas Operator | Jun 1998 |
| 25 | Bateson Donald Jr | | Oil Operator | Dec 2014 |
| 26 | Bauer Bros | | Oil Operator | Jul 2016 |
| 27 | Baumann Resources Inc | | Oil Operator | Jul 1999 |
| 28 | Beckman Production Services Inc | | Oil Operator | Dec 2016 |
| 29 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 30 | Belden And Blake Corp Dba Ward Lake Energy | | Oil Operator | Dec 2016 |
| 31 | Bell And Gault Drilling Inc | | Oil Operator | Apr 2001 |
| 32 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 33 | Benchley Donald C | | Oil Operator | Jul 2012 |
| 34 | Benchley Donald P And Benchley Jeffrey P | | Oil Operator | Dec 2016 |
| 35 | Benelli Oil LLC | | Oil Operator | Sep 2016 |
| 36 | Bergman Arthur And VIvian | | Oil Operator | Dec 2008 |
| 37 | Binney Duane Dba Bens Petroleum Co | | Oil Operator | Apr 2012 |
| 38 | Black River Oil Corp And Golden Petroleum Corp | | Oil Operator | Dec 1989 |
| 39 | Black Star Energy Inc | | Oil Operator | May 2004 |
| 40 | Blue Lake Gas Storage Co | | Oil Operator | Oct 2016 |
| 41 | Bluewater Gas Storage LLC | | Oil Operator | Dec 2016 |
| 42 | Bob Adams And Associates Inc | | Oil Operator | Dec 1998 |
| 43 | Bourdeaux H J | | Oil Operator | Dec 2015 |
| 44 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Nov 2025 |
| 45 | Brandli Oil Inc | | Oil Operator | Dec 2015 |
| 46 | Breitburn Operating Limited Partnership | | Oil Operator | Dec 2016 |
| 47 | Brewer Robert A And Karen A | | Oil Operator | Dec 2016 |
| 48 | Brown, H. L., Jr. | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 49 | Bruce Alan Enterprises Inc | | Oil Operator | Dec 2016 |
| 50 | Bucky LTD | | Oil Operator | Dec 2016 |
| 51 | Burgess D M Jr And Hall H E And Stinson D E | | Oil Operator | May 2000 |
| 52 | Burgess Hall Stinson Inc | | Oil Operator | Dec 2009 |
| 53 | C And D Explorations LLC | | Oil Operator | Dec 2016 |
| 54 | C M F Oil LLC | | Oil Operator | Nov 2016 |
| 55 | C M S Gas Transmission Co | | Oil Operator | Dec 2016 |
| 56 | C M S Oil And Gas Co And Miller Brothers | | Oil Operator | Apr 1992 |
| 57 | Cain Glen | | Oil Operator | Dec 2016 |
| 58 | Center Dean Dba Center Operating Co | | Oil Operator | Jul 2003 |
| 59 | Center Junction Corp | | Oil Operator | Mar 2009 |
| 60 | Century Oil Company Inc | | Oil Operator | Dec 2015 |
| 61 | Cherokee Resources Inc | | Oil Operator | Mar 1996 |
| 62 | Christian Oil Co | | Oil Operator | Dec 2016 |
| 63 | Clarkston Oil Corp | | Oil Operator | Dec 2015 |
| 64 | Claybanks Oil Co LLC | | Oil Operator | Oct 2016 |
| 65 | CMS Oil And Gas Company | Jackson, MI 49201 | Oil & Gas Operator | Oct 2002 |
| 66 | CNG Development Co | | Oil & Gas Operator | Dec 2008 |
| 67 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 68 | Collin C W Jr | | Oil Operator | Dec 2014 |
| 69 | Collins C R And Collins F Dba Collins Brothers Oil | | Oil Operator | Jul 2008 |
| 70 | Columbus III Production LC | | Oil Operator | Oct 2003 |
| 71 | Columbus Oil And Gas LLC | | Oil Operator | Oct 2015 |
| 72 | Comerica Properties Corp | | Oil Operator | May 1985 |
| 73 | Conoco Inc | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 74 | Consumers Energy Co | | Oil Operator | Apr 2010 |
| 75 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Feb 2026 |
| 76 | Core Energy LLC | | Oil & Gas Operator | Dec 2016 |
| 77 | Countrymark Energy Resources L L C | MT Vernon, IN 47620 | Oil & Gas Operator | Dec 2023 |
| 78 | Cowen Michael T | | Oil Operator | Dec 2009 |
| 79 | Cozart Producers | | Oil Operator | Dec 2014 |
| 80 | Crawford Arthur E Dba The Lazy Oil Co | | Oil Operator | Dec 2014 |
| 81 | Creco Operating LLC | | Oil & Gas Operator | Nov 2015 |
| 82 | Cronus Exploration Co LLC | | Oil Operator | Dec 2016 |
| 83 | D And B Brine Inc | | Oil Operator | Dec 2014 |
| 84 | D T E Gas Company | | Oil Operator | Jun 1999 |
| 85 | Dart Oil & Gas Corporation | Mason, MI 48854 | Oil & Gas Operator | Dec 2016 |
| 86 | Dejong John B | | Oil Operator | Dec 2016 |
| 87 | Delta Oil Co Inc | | Oil Operator | Dec 2016 |
| 88 | Deni Frank R | | Oil Operator | Dec 2015 |
| 89 | Devonian Energy Inc And Muzyl Oil Corp | | Oil Operator | Aug 1999 |
| 90 | Diamond Petroleum LLC | | Oil Operator | Dec 2005 |
| 91 | Dixon Exploration Inc | Abilene, TX 79604 | Oil & Gas Operator | Aug 2016 |
| 92 | Dome Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
| 93 | Dominion Midwest Energy Inc | | Oil Operator | Dec 2007 |
| 94 | Dominion Natural Resources LLC | Dallas, TX 75367 | Oil & Gas Operator | Feb 2026 |
| 95 | Don Yohe Enterprises Inc. | Armada, MI 48005 | Oil & Gas Operator | Dec 2016 |
| 96 | Dorel Inc | | Oil Operator | Apr 2001 |
| 97 | Duff Oil Co | | Oil Operator | Aug 2000 |
| 98 | Duncan Oil Inc | Denver, CO 80210 | Oil & Gas Operator | Jun 2016 |
| 99 | Dynamic Development Inc | | Oil Operator | Dec 2016 |
| 100 | Elek Aaron III | | Oil Operator | Jul 2005 |