| 1901 | B.R.H. Investments, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Apr 1998 |
| 1902 | B.W.O.C., Inc. | Plano, TX 75026 | Oil & Gas Operator | Sep 2026 |
| 1903 | B2J, L.L.C. | Lovington, NM 88260 | Oil Operator | Feb 2026 |
| 1904 | B5 Holdings LLC | | Oil Operator | Jul 2026 |
| 1905 | B5 Operating, LLC | Wellington, KS 67152 | Oil & Gas Operator | May 2026 |
| 1906 | B8 Investments | | Oil Operator | May 2026 |
| 1907 | Baay Oil LLC | Akron, OH 44333 | Oil & Gas Operator | Dec 2025 |
| 1908 | Babbitt, Robert L. II | Wellsville, NY 14895 | Oil & Gas Operator | Dec 2025 |
| 1909 | Babcock & Brown Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 2007 |
| 1910 | Babcock Ronald W | Newark, OH 43055 | Oil & Gas Operator | Dec 2019 |
| 1911 | Babcock, Dorothy | Clymer, NY 14724 | Gas Operator | Dec 2025 |
| 1912 | Baber Oil & Gas LLC | Guymon, OK 73942 | Oil & Gas Operator | Jun 2026 |
| 1913 | Baber Oil Company LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2026 |
| 1914 | Baber Well Servicing Co. | Hobbs, NM 88240 | Oil & Gas Operator | May 1995 |
| 1915 | Baber, Bill M. | Petrolia, TX 76377 | Oil & Gas Operator | Sep 2026 |
| 1916 | Baby Oil, Inc. | | Oil & Gas Operator | Oct 2017 |
| 1917 | Baca Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | Oct 2000 |
| 1918 | Baccarat Oil LTD | Denver, CO 80223 | Oil Operator | Jan 2001 |
| 1919 | Bach Energy Corporation | | Oil & Gas Operator | Jul 1992 |
| 1920 | Bach Oil Production | | Oil Operator | May 2026 |
| 1921 | Bachman Resources Group Inc. | | Oil Operator | Nov 2024 |
| 1922 | Bachtell Oil & Gas, LTD. | Longview, TX 75605 | Oil & Gas Operator | Sep 2026 |
| 1923 | Bachtell, Charles Ray | Longview, TX 75605 | Oil & Gas Operator | Feb 2004 |
| 1924 | Backa LLC | Arkansas City, KS 67005 | Oil Operator | May 2026 |
| 1925 | Backus & Lanford | | Oil Operator | Aug 1985 |
| 1926 | Backus,Barnwell& Von Gonten | | Oil & Gas Operator | Oct 1984 |
| 1927 | Bacon Energy | Cisco, TX 76437 | Oil & Gas Operator | Sep 2026 |
| 1928 | Bacon Fred Estate Of | Glenpool, OK 74033-9802 | Oil & Gas Operator | Apr 2020 |
| 1929 | Bacon Ted L | Afton, OK 74331-5518 | Oil Operator | Nov 2005 |
| 1930 | Badak Energy Inc. | | Oil & Gas Operator | Oct 2020 |
| 1931 | Badak Energy-Carraway Co | | Oil Operator | Dec 1990 |
| 1932 | Badger Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 1933 | Badger Energy, Inc. | Austin, TX 78714 | Oil & Gas Operator | Sep 2026 |
| 1934 | Badger Oil Company | Midland, TX 79701 | Oil & Gas Operator | Jun 1996 |
| 1935 | Badger Oil Corporation | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2011 |
| 1936 | Badger Oil/Clovelly Oil | | Oil & Gas Operator | Oct 2004 |
| 1937 | Badlands Energy-Utah, LLC | Denver, CO 80237 | Oil & Gas Operator | Feb 2018 |
| 1938 | Badlands Production Company | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Sep 2018 |
| 1939 | Bagby Energy LLC | Fort Smith, AR 72913 | Gas Operator | Apr 2010 |
| 1940 | Bagley, Roy | Magnolia, TX 77354 | Oil & Gas Operator | Sep 2026 |
| 1941 | Bah-Pepper Operating, LLC | Nocona, TX 76255 | Oil & Gas Operator | Sep 2026 |
| 1942 | Baham Energy Services, LLC | | Oil Operator | Dec 2024 |
| 1943 | Bahan Er Testamentary Trust | Fort Worth, TX 76116-5731 | Oil & Gas Operator | Apr 2014 |
| 1944 | Bahlburg Exploration Inc | Plano, TX 750866937 | Oil & Gas Operator | Jun 1996 |
| 1945 | Bahr Oil & Gas | Shalimar, FL 32579 | Oil & Gas Operator | Sep 2026 |
| 1946 | Bailer And Deshaw | | Oil Operator | Dec 2020 |
| 1947 | Bailer Oil Company LLC | | Oil Operator | Dec 2025 |
| 1948 | Bailey & Holden Energy LLC | Warren, PA 16365-7220 | Oil & Gas Operator | Dec 2025 |
| 1949 | Bailey Boy Oil | | Oil Operator | May 2026 |
| 1950 | Bailey C A | Nowata, OK 74048-0206 | Oil Operator | Aug 1999 |
| 1951 | Bailey David A | Mounds, OK 74047 | Oil & Gas Operator | Jun 2026 |
| 1952 | Bailey Lorene Estate Of | Fort Collins, CO 80525 | Oil Operator | Feb 2012 |
| 1953 | Bailey Michael L & Pamela D Dba MPB Oil & Gas | Paden, OK 74860-9789 | Oil & Gas Operator | Jul 2026 |
| 1954 | Bailey Oil Co., Inc. | Neodesha, KS 66757 | Oil Operator | Dec 2009 |
| 1955 | Bailey Oil Corp | Bartlesville, OK 74006 | Oil & Gas Operator | Dec 2025 |
| 1956 | Bailey Petroleum, Inc. | League City, TX 77573 | Oil & Gas Operator | Sep 2026 |
| 1957 | Bailey Richard Leon | Paden, OK 74860-7152 | Oil & Gas Operator | Jun 2026 |
| 1958 | Bailey Sharon | Centerville, KS 66014 | Oil Operator | Sep 1997 |
| 1959 | Bailey, Albian W., Jr. | Neodesha, KS 66757 | Oil Operator | Nov 2009 |
| 1960 | Bailey, Gene M. | Neodesha, KS 66757 | Oil Operator | Nov 2009 |
| 1961 | Bailey, Harold B | Owensboro, KY 42303 | Oil Operator | Dec 2021 |
| 1962 | Bailey, L. J. | Pleasanton, TX 78064 | Oil & Gas Operator | Jul 2003 |
| 1963 | Bailey, S. H. | | Oil & Gas Operator | Jul 1995 |
| 1964 | Bain Resources, Inc. | Arlington, TX 76012 | Oil & Gas Operator | Jun 2026 |
| 1965 | Bainbridge Uinta LLC | Dallas, TX 75205 | Oil & Gas Operator | May 2021 |
| 1966 | Bair'S Lease Service, Inc. | Luling, TX 78648 | Oil & Gas Operator | Mar 2026 |
| 1967 | Bair, Orville L. | Burden, KS 67019 | Oil & Gas Operator | Oct 2003 |
| 1968 | Baird Bros Sawmill Inc | Canfield, OH 44406 | Oil & Gas Operator | Dec 2012 |
| 1969 | Baird Family Limited Partnership | Canfield, OH 44406 | Oil & Gas Operator | Dec 2025 |
| 1970 | Baird Oil Company Inc | Lewisville, TX 75067 | Oil & Gas Operator | Sep 2026 |
| 1971 | Baird Oil Company LLC | Logan, KS 67646 | Oil Operator | May 2026 |
| 1972 | Baja Production | Bridgeport, TX 76426 | Oil & Gas Operator | Sep 2026 |
| 1973 | Baker Corporation | | Oil Operator | Dec 2025 |
| 1974 | Baker Eberle Energy Corp | Blackwell, OK 74631 | Oil & Gas Operator | Mar 2015 |
| 1975 | Baker Gas Inc | Worthington, PA 16262-0739 | Gas Operator | Jun 2026 |
| 1976 | Baker Oil & Gas | St Louisville, OH 43071 | Oil & Gas Operator | Sep 2014 |
| 1977 | Baker Oil And Gas Company | | Gas Operator | Dec 1997 |
| 1978 | Baker Oil Co | Leitchfield, KY 42754 | Oil & Gas Operator | Dec 2023 |
| 1979 | Baker Oil Incorp | | Oil Operator | Oct 1985 |
| 1980 | Baker Operating, Inc. | Odessa, TX 79764 | Oil & Gas Operator | Sep 2026 |
| 1981 | Baker Petroleum | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Oct 1999 |
| 1982 | Baker Resources | San Angelo, TX 76902 | Oil & Gas Operator | Aug 2021 |
| 1983 | Baker Resources, LLC | San Angelo, TX 76902 | Oil & Gas Operator | Sep 2026 |
| 1984 | Baker, Brent Oil & Gas, Inc. | New Castle, OK 73065 | Oil & Gas Operator | Sep 2026 |
| 1985 | Baker, Charles And Stephanie | Falconer, NY 14733 | Gas Operator | Dec 2025 |
| 1986 | Baker, James J. & Jacqueline J. | Mayville, NY 14757 | Gas Operator | Dec 2025 |
| 1987 | Baker-Dickey Partnership | | Oil Operator | Dec 1992 |
| 1988 | Bakersfield Energy Resources Inc. | | Oil & Gas Operator | Dec 1998 |
| 1989 | Bakerwell Inc | Killbuck, OH 44637 | Oil & Gas Operator | Dec 2025 |
| 1990 | Bakin Oil & Gas Inc | | Oil & Gas Operator | Apr 2020 |
| 1991 | Bakken Hunter, LLC | | Oil & Gas Operator | Jun 2017 |
| 1992 | Balance Production Corporation | Temple, TX 76503 | Oil & Gas Operator | Sep 2025 |
| 1993 | Balcerzak, Mr. & Mrs. Raymond R., SR. | Alden, NY 14004 | Gas Operator | Dec 2025 |
| 1994 | Balco Energy Corporation | | Oil & Gas Operator | Jul 1983 |
| 1995 | Balco Energy Inc | Duncan, OK 73533 | Oil & Gas Operator | Jul 2026 |
| 1996 | Balcones Production Company | Houston, TX 77002 | Oil & Gas Operator | Feb 1996 |
| 1997 | Bald Eagle Operating Inc. | Midland, TX 79707 | Oil & Gas Operator | Sep 2026 |
| 1998 | Bald Hill Oil | Sheffield, PA 16347-0274 | Oil & Gas Operator | Dec 2025 |
| 1999 | Baldes Henry | Riverton, WY 82501 | Oil Operator | Dec 1998 |
| 2000 | Baldrachi Oil Properties LLC | Bartlesville, OK 74006-1622 | Oil Operator | Jun 2026 |