| 901 | Graybol-Patton C | | Oil & Gas Operator | Oct 1991 |
| 902 | Grayco Energy Explor. Inc. | | Oil & Gas Operator | Dec 2010 |
| 903 | Grayhawk Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2006 |
| 904 | Grayhorse Operating Inc | Tulsa, OK 74103-4438 | Oil & Gas Operator | Apr 2026 |
| 905 | Grayling Oil Inc | | Oil & Gas Operator | Feb 1995 |
| 906 | Graymarr LLC | Graysville, OH 45734 | Oil & Gas Operator | Dec 2025 |
| 907 | Grayrock Corp., The | Dallas, TX 75243 | Oil & Gas Operator | Dec 1999 |
| 908 | Grayrock Energy II, LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Jul 2026 |
| 909 | Grayrock Energy, LLC | Fort Worth, TX 76114 | Oil & Gas Operator | May 2026 |
| 910 | Grayson Mill Operating, LLC | | Oil & Gas Operator | Aug 2025 |
| 911 | Grayson Operating LLC | Ada, OK 74820 | Oil & Gas Operator | Apr 2026 |
| 912 | Grayson Petroleum Company | Whitesboro, TX 76273 | Oil & Gas Operator | Jul 2026 |
| 913 | Grayson Service Inc. | | Oil & Gas Operator | May 2026 |
| 914 | Graystone Energy Corporation | Judson, TX 75660 | Oil & Gas Operator | Jul 2026 |
| 915 | Graystone Exploration Corp. | Garland, TX 75043 | Oil & Gas Operator | Aug 2003 |
| 916 | Graystone Operating, LLC | Fort Worth, TX 76121 | Gas Operator | Jul 2026 |
| 917 | GRB Properties, Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2003 |
| 918 | Grease Exploration Incorporated | | Oil & Gas Operator | Dec 2024 |
| 919 | Greasewood Oil Company | Midland, TX 79705 | Oil & Gas Operator | Jul 2007 |
| 920 | Great American Exploration, Inc. | | Oil Operator | Feb 1979 |
| 921 | Great American Resources Inc. | Bowie, TX 76230 | Oil & Gas Operator | Jul 2026 |
| 922 | Great American Royalties, Inc. | | Oil Operator | Jun 2026 |
| 923 | Great Basin Petroleum Serv, Inc. | Odessa, TX 79765 | Oil & Gas Operator | Nov 2002 |
| 924 | Great Basin Petroleum Serv, L.P. | Odessa, TX 79765 | Oil & Gas Operator | Jul 2008 |
| 925 | Great Basin Well Service Corp. | Odessa, TX 79765 | Oil & Gas Operator | Feb 2025 |
| 926 | Great Basins Petroleum Co | | Gas Operator | Mar 2015 |
| 927 | Great Bay Operations, LLC | Portsmouth, NH 03801 | Oil & Gas Operator | Nov 2016 |
| 928 | Great Bear Pantheon, LLC | | Oil & Gas Operator | Feb 2026 |
| 929 | Great Bend Oil P | | Oil Operator | Jun 1991 |
| 930 | Great Eastern En | | Oil & Gas Operator | Nov 1995 |
| 931 | Great Eastern Energy & Dev. Corp. | Midland, TX 79701 | Oil & Gas Operator | Jul 2008 |
| 932 | Great Horned Owls Pulsatrix, LLC | Pampa, TX 79066 | Oil & Gas Operator | Jul 2026 |
| 933 | Great Horned Owls, LLC | Pampa, TX 79065 | Oil & Gas Operator | May 2026 |
| 934 | Great Lakes Chemical Corp | West Lafayette, IN 47906 | Oil & Gas Operator | Nov 2023 |
| 935 | Great Lakes Conf. Of The Evangelical Covenant | Dewittville, NY 14728 | Gas Operator | Dec 2025 |
| 936 | Great Lakes Niagaran Inc | | Oil & Gas Operator | Mar 1988 |
| 937 | Great Lakes Petroleum Producers Inc | | Oil Operator | Jun 2026 |
| 938 | Great Northern Drilling Company | Billings, MT 59103 | Oil & Gas Operator | Jun 2016 |
| 939 | Great Northern Energy, Inc | Irving, TX 75039 | Oil & Gas Operator | Jul 2026 |
| 940 | Great Northern Gas Company | Denver, CO 80293-0602 | Oil & Gas Operator | Jun 2016 |
| 941 | Great Oak Energy, Inc. | Oakmont, PA 15139-2003 | Oil & Gas Operator | Feb 2021 |
| 942 | Great Plains Energy, Inc. | Lincoln, NE 68516 | Oil & Gas Operator | Mar 2026 |
| 943 | Great Plains Exploration LLC | Mentor, OH 44060 | Oil & Gas Operator | Dec 2016 |
| 944 | Great Plains Oil & Gas | Ada, OK 74820-7209 | Oil & Gas Operator | May 2013 |
| 945 | Great Plains Oper LLC Dba Great MTN Oper | | Gas Operator | Nov 2015 |
| 946 | Great Plains Operating Inc | Bristow, OK 74010 | Oil & Gas Operator | Dec 1998 |
| 947 | Great Plains Operating, LLC. | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2014 |
| 948 | Great Plains Pet | | Oil & Gas Operator | Mar 1995 |
| 949 | Great Plains Petroleum, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Mar 2026 |
| 950 | Great Plains Pipeline Company | Tulsa, OK 74135-6405 | Oil & Gas Operator | Jul 2014 |
| 951 | Great Plains Resources, Inc. | Nixon, TX 78140 | Oil & Gas Operator | Jul 2026 |
| 952 | Great River Oil & Gas Corp. | | Oil & Gas Operator | Sep 1998 |
| 953 | Great Scott, Inc. | | Oil & Gas Operator | Oct 1993 |
| 954 | Great Southern - Joe Scates | | Oil Operator | Dec 1979 |
| 955 | Great Southern Oil &Gas Co Inc | | Oil & Gas Operator | Dec 2004 |
| 956 | Great Southwestern Expl Inc | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2026 |
| 957 | Great Texas Crude Inc. | Fredericksbrg, TX 78624 | Oil & Gas Operator | Jul 2026 |
| 958 | Great West Energy & Expl., Inc. | Addison, TX 75001 | Oil & Gas Operator | Mar 2008 |
| 959 | Great West Operating Co., Inc. | Dallas, TX 75240 | Oil & Gas Operator | Aug 2003 |
| 960 | Great Western Drilling | | Oil Operator | Dec 2002 |
| 961 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | Jul 2026 |
| 962 | Great Western Equipment Co | Mustang, OK 73064 | Oil & Gas Operator | Apr 2026 |
| 963 | Great Western Land Co Inc | Tulsa, OK 74136-1517 | Oil & Gas Operator | Jun 2000 |
| 964 | Great Western Onshore Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 965 | Great Western Operating Company LLC | | Oil & Gas Operator | Aug 2020 |
| 966 | Great Yellowstone Corporation | | Oil & Gas Operator | Apr 1993 |
| 967 | Greatbatch LTD. | Clarence, NY 14031 | Gas Operator | Dec 2025 |
| 968 | Grecian Gas Company | | Gas Operator | Dec 2002 |
| 969 | Greco Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jul 2026 |
| 970 | Greco Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Jul 2026 |
| 971 | Greehey & Company, LTD. | San Antonio, TX 78216 | Oil & Gas Operator | May 2020 |
| 972 | Greeley, John A. | Eldred, PA 16731 | Oil & Gas Operator | Dec 2025 |
| 973 | Green Century Exp & Prod, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2026 |
| 974 | Green Earth Resources Inc. | | Oil & Gas Operator | Dec 2020 |
| 975 | Green Energy Company | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 976 | Green Energy Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2025 |
| 977 | Green Enterprises | | Oil Operator | Mar 2026 |
| 978 | Green Exploration Company | Austin, TX 78711 | Oil & Gas Operator | Jul 2026 |
| 979 | Green Gas Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 2020 |
| 980 | Green J R & Jerr | | Oil Operator | Dec 1991 |
| 981 | Green Light Operating, LLC. | Austin, TX 78746 | Oil Operator | Jul 2026 |
| 982 | Green Oil & Gas, Inc. | Winters, TX 79567 | Oil & Gas Operator | Aug 2003 |
| 983 | Green Oilfield Production L.L.C. | Jennings, KS 67643 | Oil Operator | Mar 2026 |
| 984 | Green Oper Compa | | Gas Operator | Jan 1970 |
| 985 | Green Operating | | Oil Operator | Jun 2010 |
| 986 | Green Operating Company Inc | Tulsa, OK 74135 | Oil & Gas Operator | Mar 2026 |
| 987 | Green Petroleum Company | Archer City, TX 76351 | Oil & Gas Operator | Nov 1996 |
| 988 | Green Production, LLC | | Oil & Gas Operator | Dec 2016 |
| 989 | Green River Exploration Co | Tulsa, OK 74121-1468 | Oil & Gas Operator | Sep 2011 |
| 990 | Green River Gas Co, Inc | | Oil & Gas Operator | Dec 2010 |
| 991 | Green River Operating Co Inc | Noble, OK 73068-5521 | Oil & Gas Operator | Feb 2018 |
| 992 | Green River Resources Inc. | Keystone, CO 80435 | Oil & Gas Operator | Jul 2026 |
| 993 | Green Smith Energy LP | Glenpool, OK 74033-3122 | Oil & Gas Operator | May 2026 |
| 994 | Green Star | Somerset, TX 78069 | Oil Operator | Jul 2026 |
| 995 | Green Valley Disposal Serv LLC | Alva, OK 73717 | Oil Operator | Apr 2026 |
| 996 | Green Valley Operating, LLC | Billings, MT 59108 | Oil & Gas Operator | May 2026 |
| 997 | Green Wells Venture LLC | Miami, FL 33131 | Gas Operator | Dec 2025 |
| 998 | Green William G | Jenks, OK 74037-3233 | Oil & Gas Operator | Apr 2020 |
| 999 | Green'S Drillng & Mud Ser Inc | Konawa, OK 74849 | Oil Operator | Jan 2013 |
| 1000 | Green, Bobbie | Chautauqua, KS 67334 | Oil Operator | Mar 2026 |