| 22801 | Petro River Operating, LLC | New York City, NY 10017 | Oil & Gas Operator | Jul 2011 |
| 22802 | Petro Search Exploration Corp | | Oil & Gas Operator | May 1993 |
| 22803 | Petro Speed Inc | Norman, OK 73069-8116 | Oil & Gas Operator | Mar 2015 |
| 22804 | Petro SVC Partners Inc | Indiana, PA 15701-8556 | Oil & Gas Operator | Dec 2024 |
| 22805 | Petro Valley Ser | | Gas Operator | Dec 1986 |
| 22806 | Petro Ventures Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2019 |
| 22807 | Petro Vest Operating LLC | | Oil Operator | Aug 2013 |
| 22808 | Petro Vest, Inc. | Houston, TX 77046 | Oil & Gas Operator | Sep 2014 |
| 22809 | Petro Warrior LLC | Wichita, KS 67206 | Oil & Gas Operator | Jan 2025 |
| 22810 | Petro-Assets Corporation | | Oil & Gas Operator | Feb 2000 |
| 22811 | Petro-Beth Oil & Gas, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2006 |
| 22812 | Petro-Canada Resources (USA) | | Oil & Gas Operator | Dec 2009 |
| 22813 | Petro-Canada Resources (USA) Inc | Denver, CO 80202-472 | Oil & Gas Operator | Feb 2010 |
| 22814 | Petro-Chase Energy Corp | Oklahoma City, OK 73135-6205 | Oil & Gas Operator | Jan 2007 |
| 22815 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2025 |
| 22816 | Petro-Flow, Inc | | Gas Operator | Dec 2023 |
| 22817 | Petro-Go, Inc. | | Oil & Gas Operator | Mar 1996 |
| 22818 | Petro-Guard Company, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2014 |
| 22819 | Petro-Guard Production,L.L.C. | Houston, TX 77063 | Oil & Gas Operator | Dec 2024 |
| 22820 | Petro-Haley | Borger, TX 79008 | Oil & Gas Operator | Apr 2025 |
| 22821 | Petro-Hunt Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2003 |
| 22822 | Petro-Hunt Dakota, LLC | | Oil & Gas Operator | Feb 2025 |
| 22823 | Petro-Hunt Permian, LLC | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 22824 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 22825 | Petro-Lewis Corp. | | Oil & Gas Operator | Feb 1994 |
| 22826 | Petro-Lud Inc. | | Oil & Gas Operator | Dec 2024 |
| 22827 | Petro-Mac Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2025 |
| 22828 | Petro-Management Assoc., Inc. | Edmond, OK 73083-2346 | Oil & Gas Operator | Jun 2007 |
| 22829 | Petro-Management Inc | | Oil Operator | Dec 1998 |
| 22830 | Petro-Mark, Inc. | St Petersburg, FL 33701 | Oil & Gas Operator | Dec 2021 |
| 22831 | Petro-Met Energy LLC | Edmond, OK 73034-1237 | Oil Operator | Dec 2024 |
| 22832 | Petro-Raider LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 22833 | Petro-Smith Operating LLC | Houston, TX 77010 | Oil & Gas Operator | Apr 2025 |
| 22834 | Petro-Technology | | Oil & Gas Operator | Aug 1991 |
| 22835 | Petro-Technology, Inc. | Topeka, KS 66604 | Gas Operator | Dec 1997 |
| 22836 | Petro-Tex Energy & Expl.Co.,Inc. | Llano, TX 78643 | Oil & Gas Operator | Apr 2025 |
| 22837 | Petro-Ventures, Inc. - Miss. | | Oil & Gas Operator | Apr 2009 |
| 22838 | Petro-West Corporation | Lubbock, TX 79404 | Oil & Gas Operator | Oct 2001 |
| 22839 | Petro-X Corporation | Houston, TX 77092 | Oil & Gas Operator | Jul 2002 |
| 22840 | Petrobal Omega 1, LLC | Little Elm, TX 75068 | Oil & Gas Operator | Apr 2025 |
| 22841 | Petrobank Opr Co | Denver, CO 80202-4675 | Gas Operator | Dec 1992 |
| 22842 | Petrocan, Inc. | | Oil & Gas Operator | Apr 1998 |
| 22843 | Petrocana,Inc. | | Oil & Gas Operator | Aug 1993 |
| 22844 | Petrocarbon Energy Corporation | | Oil Operator | Sep 1996 |
| 22845 | Petrocarbon Energy Trust | | Oil Operator | Sep 1996 |
| 22846 | Petrocat Innovations, LLC | Forney, TX 75126 | Oil Operator | Apr 2025 |
| 22847 | Petroco Inc | | Oil & Gas Operator | Nov 1996 |
| 22848 | Petrocoastal, Inc. | Frisco, TX 75036 | Oil & Gas Operator | Apr 2025 |
| 22849 | Petrocon Inc | Delaware, OH 43015-7147-7147 | Oil & Gas Operator | Dec 2010 |
| 22850 | Petrocorp | | Oil & Gas Operator | Nov 1992 |
| 22851 | Petrocorp Acquisition Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2002 |
| 22852 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 22853 | Petrocorp Incorporated,A TX.Corp | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2005 |
| 22854 | Petroda Oil & Gas LLC | Edmond, OK 73054 | Oil & Gas Operator | Feb 2023 |
| 22855 | Petrodata Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 22856 | Petrodome Operating, LLC | Houston, TX 77265 | Oil & Gas Operator | Dec 2024 |
| 22857 | Petrodril Inc | Farmington, NM 87401 | Oil & Gas Operator | Jan 1987 |
| 22858 | Petrodudes | Crescent, OK 73028-8706 | Oil & Gas Operator | Aug 2024 |
| 22859 | Petroel | Marietta, OH 45750 | Oil & Gas Operator | Dec 2000 |
| 22860 | Petroflow Energy Corporation | Tulsa, OK 74119-5405 | Oil & Gas Operator | Oct 2016 |
| 22861 | Petrofunds, Inc & Sunny South | | Oil & Gas Operator | Feb 1984 |
| 22862 | Petrofunds, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 1996 |
| 22863 | Petrofunds, Inc. & Herd | | Oil & Gas Operator | Mar 1984 |
| 22864 | Petrogas Energy Services, LLC | Dallas, TX 75214 | Oil Operator | Apr 2025 |
| 22865 | Petrogas Exploration Inc | | Oil Operator | Sep 2024 |
| 22866 | Petrogas Operating Corporation | Garland, TX 75043 | Oil Operator | Feb 2010 |
| 22867 | Petrogen, Incorporated | Katy, TX 77450 | Oil & Gas Operator | Jan 2012 |
| 22868 | Petroglen Company, Inc. | | Oil & Gas Operator | Jul 1990 |
| 22869 | Petroglyph Operating Co | Boise, ID 83709 | Oil & Gas Operator | Jul 2017 |
| 22870 | Petrogulf Corporation | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 22871 | Petrohawk Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Jun 2005 |
| 22872 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 22873 | Petrojen Production Company Inc | Bakersfield, CA 93311 | Oil Operator | Dec 2024 |
| 22874 | Petrol Industries, Inc. | Shreveport, LA 71137 | Oil & Gas Operator | Jun 2012 |
| 22875 | Petrol Oil & Gas, Inc. | Overland Park, KS 66210 | Oil & Gas Operator | Dec 2008 |
| 22876 | Petrolanic Inc | Tulsa, OK 74105 | Oil Operator | Oct 1991 |
| 22877 | Petrolegacy Energy II, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2023 |
| 22878 | Petrolero Corp. | San Antonio, TX 78205 | Oil & Gas Operator | Feb 1998 |
| 22879 | Petrolero, LLC | Plano, TX 75026 | Oil & Gas Operator | Apr 2025 |
| 22880 | Petroleum Advisors Int'L., Inc. | Houston, TX 77224 | Gas Operator | Jun 2005 |
| 22881 | Petroleum Capital, L.C. | Dallas, TX 75367 | Oil & Gas Operator | Apr 2025 |
| 22882 | Petroleum Corp Of Delaware The | | Oil & Gas Operator | May 1991 |
| 22883 | Petroleum Corpor | | Oil Operator | Jan 1983 |
| 22884 | Petroleum Corporation Of Texas | Breckenridge, TX 76024 | Oil & Gas Operator | May 2002 |
| 22885 | Petroleum Develo | | Oil Operator | Sep 1986 |
| 22886 | Petroleum Development Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2025 |
| 22887 | Petroleum Development Cor | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2004 |
| 22888 | Petroleum Development Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
| 22889 | Petroleum Development LLC | | Oil Operator | Jul 2018 |
| 22890 | Petroleum Energy | | Oil & Gas Operator | Mar 1991 |
| 22891 | Petroleum Energy Corp | | Oil & Gas Operator | Aug 2012 |
| 22892 | Petroleum Energy, Inc. | Wichita, KS 67202 | Oil Operator | May 1999 |
| 22893 | Petroleum Engineering & Management Corp. | Casper, WY 82609 | Oil & Gas Operator | Jul 2018 |
| 22894 | Petroleum Engineers, Inc. | | Oil & Gas Operator | Jun 1983 |
| 22895 | Petroleum Enterp | | Oil & Gas Operator | Sep 1995 |
| 22896 | Petroleum Enterprises, Inc. | Hutchinson, KS 67504 | Oil & Gas Operator | May 2001 |
| 22897 | Petroleum Exchange | | Oil & Gas Operator | Oct 1997 |
| 22898 | Petroleum Explo Prod Inc | Oilton, OK 74052 | Oil & Gas Operator | Jan 2017 |
| 22899 | Petroleum Explor | | Oil Operator | Aug 1983 |
| 22900 | Petroleum Exploration Company LTD Dba Petex | | Oil Operator | Feb 2025 |