| 1901 | B-Mac Oil Co. | | Oil Operator | Sep 2002 |
| 1902 | B-P Ent. | Arlington, TX 76015 | Oil Operator | Jul 1996 |
| 1903 | B-T Oil Field Supply, Inc. | Caldwell, TX 77836 | Oil & Gas Operator | Jul 2002 |
| 1904 | B-Tech. Pet., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2005 |
| 1905 | B-W Oil | Cisco, TX 76437 | Oil & Gas Operator | Jun 2026 |
| 1906 | B. & L. Oil Company | Seguin, TX 78155 | Oil & Gas Operator | Jun 2026 |
| 1907 | B. & M. Family Oil Company | Midland, TX 79708 | Oil & Gas Operator | Jan 1999 |
| 1908 | B. A. Hardey, Jr. | | Oil Operator | Mar 1984 |
| 1909 | B. B. & C. | Big Spring, TX 79720 | Oil Operator | Jun 2026 |
| 1910 | B. D. & D. Co. | | Gas Operator | Dec 1992 |
| 1911 | B. D. Evans Oil Co. | | Oil & Gas Operator | Jun 2017 |
| 1912 | B. E. Conway Energy Inc. | | Oil & Gas Operator | Feb 2026 |
| 1913 | B. G. Denton | | Oil & Gas Operator | Dec 2023 |
| 1914 | B. H. T. Production, LLC | | Oil & Gas Operator | Apr 2010 |
| 1915 | B. J. Long | | Oil & Gas Operator | Nov 1989 |
| 1916 | B. J. P. Operating | Luling, TX 78648 | Oil & Gas Operator | Jun 2026 |
| 1917 | B. L. Ainsworth | | Oil Operator | Dec 1988 |
| 1918 | B. L. G. Company | | Gas Operator | Nov 1989 |
| 1919 | B. M. Hester | | Oil & Gas Operator | Mar 1993 |
| 1920 | B. M. J. Oil Venture | Luling, TX 78648 | Oil & Gas Operator | Jun 2005 |
| 1921 | B. V. Well Services, LLC | Buckhannon, WV 26201 | Oil & Gas Operator | Dec 2021 |
| 1922 | B. W. P., Inc. | Diboll, TX 75941 | Oil & Gas Operator | Mar 2015 |
| 1923 | B.A.C.O.C., Inc. | Bryan, TX 77802 | Oil & Gas Operator | May 1997 |
| 1924 | B.A.R. Treating Service, Inc. | Austin, TX 78746 | Oil & Gas Operator | Jun 2026 |
| 1925 | B.E.G. Production | Iowa Park, TX 76367 | Oil & Gas Operator | Jun 2026 |
| 1926 | B.N.B. Production | Corpus Chrsti, TX 78403 | Oil & Gas Operator | May 1993 |
| 1927 | B.N.B. Production Inc. | Austin, TX 78720 | Oil & Gas Operator | May 1996 |
| 1928 | B.O. Oil Company | Houston, TX 77089 | Oil & Gas Operator | Jun 2026 |
| 1929 | B.O.L.D. Oil And Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Jun 2026 |
| 1930 | B.P. Oil Company | Midland, TX 79706 | Oil & Gas Operator | Jun 2026 |
| 1931 | B.P. Productions Inc. | Victoria, TX 77904 | Oil & Gas Operator | Jun 2026 |
| 1932 | B.R.H. Investments, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Apr 1998 |
| 1933 | B.W.O.C., Inc. | Plano, TX 75026 | Oil & Gas Operator | Jun 2026 |
| 1934 | B2J, L.L.C. | Lovington, NM 88260 | Oil Operator | Feb 2026 |
| 1935 | B5 Holdings LLC | | Oil Operator | Mar 2026 |
| 1936 | B5 Operating, LLC | Wellington, KS 67152 | Oil & Gas Operator | Feb 2026 |
| 1937 | B8 Investments | | Oil Operator | Feb 2026 |
| 1938 | Baay Oil LLC | Akron, OH 44333 | Oil & Gas Operator | Dec 2025 |
| 1939 | Babbitt, Robert L. II | Wellsville, NY 14895 | Oil & Gas Operator | Dec 2024 |
| 1940 | Babcock & Brown Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 2007 |
| 1941 | Babcock Ronald W | Newark, OH 43055 | Oil & Gas Operator | Dec 2019 |
| 1942 | Babcock, Dorothy | Clymer, NY 14724 | Gas Operator | Dec 2024 |
| 1943 | Baber Oil & Gas LLC | Guymon, OK 73942 | Oil & Gas Operator | Mar 2026 |
| 1944 | Baber Oil Company LLC | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 1945 | Baber Well Servicing Co. | Hobbs, NM 88240 | Oil & Gas Operator | May 1995 |
| 1946 | Baber, Bill M. | Petrolia, TX 76377 | Oil & Gas Operator | Jun 2026 |
| 1947 | Baby Oil, Inc. | | Oil & Gas Operator | Oct 2017 |
| 1948 | Baca Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | Oct 2000 |
| 1949 | Baccarat Oil LTD | Denver, CO 80223 | Oil Operator | Jan 2001 |
| 1950 | Bach Energy Corporation | | Oil & Gas Operator | Jul 1992 |
| 1951 | Bach Oil Production | | Oil Operator | Feb 2026 |
| 1952 | Bachman Resources Group Inc. | | Oil Operator | Nov 2024 |
| 1953 | Bachtell Oil & Gas, LTD. | Longview, TX 75605 | Oil & Gas Operator | Jun 2026 |
| 1954 | Bachtell, Charles Ray | Longview, TX 75605 | Oil & Gas Operator | Feb 2004 |
| 1955 | Backa LLC | Arkansas City, KS 67005 | Oil Operator | Feb 2026 |
| 1956 | Backus & Lanford | | Oil Operator | Aug 1985 |
| 1957 | Backus,Barnwell& Von Gonten | | Oil & Gas Operator | Oct 1984 |
| 1958 | Bacon Energy | Cisco, TX 76437 | Oil & Gas Operator | Jun 2026 |
| 1959 | Bacon Fred Estate Of | Glenpool, OK 74033-9802 | Oil & Gas Operator | Apr 2020 |
| 1960 | Bacon Ted L | Afton, OK 74331-5518 | Oil Operator | Nov 2005 |
| 1961 | Badak Energy Inc. | | Oil & Gas Operator | Oct 2020 |
| 1962 | Badak Energy-Carraway Co | | Oil Operator | Dec 1990 |
| 1963 | Badger Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 1964 | Badger Energy, Inc. | Austin, TX 78714 | Oil & Gas Operator | Jun 2026 |
| 1965 | Badger Oil Company | Midland, TX 79701 | Oil & Gas Operator | Jun 1996 |
| 1966 | Badger Oil Corporation | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2011 |
| 1967 | Badger Oil/Clovelly Oil | | Oil & Gas Operator | Oct 2004 |
| 1968 | Badlands Energy-Utah, LLC | Denver, CO 80237 | Oil & Gas Operator | Feb 2018 |
| 1969 | Badlands Production Company | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Sep 2018 |
| 1970 | Bagby Energy LLC | Fort Smith, AR 72913 | Gas Operator | Apr 2010 |
| 1971 | Bagley, Roy | Magnolia, TX 77354 | Oil & Gas Operator | Jun 2026 |
| 1972 | Bah-Pepper Operating, LLC | Nocona, TX 76255 | Oil & Gas Operator | Jun 2026 |
| 1973 | Baham Energy Services, LLC | | Oil Operator | Dec 2024 |
| 1974 | Bahan Er Testamentary Trust | Fort Worth, TX 76116-5731 | Oil & Gas Operator | Apr 2014 |
| 1975 | Bahlburg Exploration Inc | Plano, TX 750866937 | Oil & Gas Operator | Jun 1996 |
| 1976 | Bahr Oil & Gas | Shalimar, FL 32579 | Oil & Gas Operator | Jun 2026 |
| 1977 | Bailer And Deshaw | | Oil Operator | Dec 2020 |
| 1978 | Bailer Oil Company LLC | | Oil Operator | Dec 2025 |
| 1979 | Bailey & Holden Energy LLC | Warren, PA 16365-7220 | Oil & Gas Operator | Dec 2025 |
| 1980 | Bailey Boy Oil | | Oil Operator | Jan 2026 |
| 1981 | Bailey C A | Nowata, OK 74048-0206 | Oil Operator | Aug 1999 |
| 1982 | Bailey David A | Mounds, OK 74047 | Oil & Gas Operator | Feb 2026 |
| 1983 | Bailey Lorene Estate Of | Fort Collins, CO 80525 | Oil Operator | Feb 2012 |
| 1984 | Bailey Michael L & Pamela D Dba MPB Oil & Gas | Paden, OK 74860-9789 | Oil & Gas Operator | Mar 2026 |
| 1985 | Bailey Oil Co., Inc. | Neodesha, KS 66757 | Oil Operator | Dec 2009 |
| 1986 | Bailey Oil Corp | Bartlesville, OK 74006 | Oil & Gas Operator | Dec 2025 |
| 1987 | Bailey Petroleum, Inc. | League City, TX 77573 | Oil & Gas Operator | Jun 2026 |
| 1988 | Bailey Richard Leon | Paden, OK 74860-7152 | Oil & Gas Operator | Mar 2026 |
| 1989 | Bailey Sharon | Centerville, KS 66014 | Oil Operator | Sep 1997 |
| 1990 | Bailey, Albian W., Jr. | Neodesha, KS 66757 | Oil Operator | Nov 2009 |
| 1991 | Bailey, Gene M. | Neodesha, KS 66757 | Oil Operator | Nov 2009 |
| 1992 | Bailey, Harold B | Owensboro, KY 42303 | Oil Operator | Dec 2021 |
| 1993 | Bailey, L. J. | Pleasanton, TX 78064 | Oil & Gas Operator | Jul 2003 |
| 1994 | Bailey, S. H. | | Oil & Gas Operator | Jul 1995 |
| 1995 | Bain Resources, Inc. | Arlington, TX 76012 | Oil & Gas Operator | Mar 2026 |
| 1996 | Bainbridge Uinta LLC | Dallas, TX 75205 | Oil & Gas Operator | May 2021 |
| 1997 | Bair'S Lease Service, Inc. | Luling, TX 78648 | Oil & Gas Operator | Jun 2026 |
| 1998 | Bair, Orville L. | Burden, KS 67019 | Oil & Gas Operator | Oct 2003 |
| 1999 | Baird Bros Sawmill Inc | Canfield, OH 44406 | Oil & Gas Operator | Dec 2012 |
| 2000 | Baird Family Limited Partnership | Canfield, OH 44406 | Oil & Gas Operator | Dec 2025 |