| 1701 | Coast Supply Company LTD. | | Oil & Gas Operator | Dec 1991 |
| 1702 | Coastal Bend Petroleum Corp. | Corpus Chrsti, TX 78427 | Oil & Gas Operator | Dec 2002 |
| 1703 | Coastal Chem Inc | Midvale, UT 84047 | Oil & Gas Operator | Aug 2003 |
| 1704 | Coastal Expanse Oil & Gas | Austin, TX 78704 | Oil & Gas Operator | Sep 2026 |
| 1705 | Coastal Investments Inc. | El Campo, TX 77437 | Oil & Gas Operator | Sep 2026 |
| 1706 | Coastal Management Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 1707 | Coastal Minerals, Inc. | | Oil Operator | Aug 1991 |
| 1708 | Coastal New Mexico MGMT LLC | Carlsbad, NM 88220 | Oil & Gas Operator | Sep 2026 |
| 1709 | Coastal Oil & Ga | | Oil & Gas Operator | Oct 1996 |
| 1710 | Coastal Oil & Gas | | Oil & Gas Operator | Jul 1995 |
| 1711 | Coastal Oil & Gas Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 1712 | Coastal Oils Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2013 |
| 1713 | Coastal Petro Corp | Oil City, PA 16301-6327 | Oil & Gas Operator | Jul 2018 |
| 1714 | Coastal Plains Energy Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 2026 |
| 1715 | Coastal Plains Exploration, LLC | Port Lavaca, TX 77979 | Oil & Gas Operator | Sep 2026 |
| 1716 | Coastal Production Company, Inc. | El Campo, TX 77437 | Oil & Gas Operator | Aug 1995 |
| 1717 | Coastal Production Inc. | | Oil & Gas Operator | Aug 2000 |
| 1718 | Coastal Shoreline Corp. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Aug 2003 |
| 1719 | Coastal States & Emerald Oil | | Oil & Gas Operator | Dec 1979 |
| 1720 | Coastal States Gas Prod Co | | Oil & Gas Operator | Jun 1996 |
| 1721 | Coastland Operations, LLC | Dallas, TX 75287 | Oil & Gas Operator | Sep 2026 |
| 1722 | Coastline Exploration, Inc. | Stafford, TX 77477 | Oil & Gas Operator | Sep 2026 |
| 1723 | Coastline Operating, L.L.C. | Houston, TX 77027 | Oil & Gas Operator | Dec 2006 |
| 1724 | Coates Energy Interests, LTD. | San Antonio, TX 78217 | Oil & Gas Operator | Aug 1997 |
| 1725 | Coates Energy Trust | San Antonio, TX 78209 | Oil & Gas Operator | Aug 2008 |
| 1726 | Coats Energy, Inc. | Wichita, KS 67201 | Oil & Gas Operator | May 2026 |
| 1727 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | May 2026 |
| 1728 | Cobalt Environmental Solutions LLC | Oklahoma City, OK 73101-0249 | Oil Operator | Jun 2019 |
| 1729 | Cobalt Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Jun 2026 |
| 1730 | Cobb, E M | Henderson, KY 42420 | Oil Operator | Dec 2019 |
| 1731 | Cobb, Maurice W | | Oil Operator | Dec 2024 |
| 1732 | Cobb, Maurice W Dba M W C Oil Co | Eddyville, KY 42038 | Oil Operator | Dec 2019 |
| 1733 | Cobbs Brothers Oil & Gas | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Jun 2009 |
| 1734 | Cobham Gas Industries, Inc. | | Oil & Gas Operator | Dec 2006 |
| 1735 | Cobopco Inc | Tulsa, OK 74103-4391 | Oil & Gas Operator | Feb 1997 |
| 1736 | Cobra Oil & Gas | | Oil & Gas Operator | Jul 1995 |
| 1737 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2026 |
| 1738 | Cobra Operating Company | Houston, TX 77002 | Oil & Gas Operator | Sep 2003 |
| 1739 | Cobra Petroleum Production Corp | | Oil & Gas Operator | Dec 2018 |
| 1740 | Cobra Resources LLC | North Jackson, OH 44451 | Oil & Gas Operator | Dec 2025 |
| 1741 | Cobra-Lyons-Hilliard-Watson | | Oil & Gas Operator | Jun 1992 |
| 1742 | Cochise Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 1743 | Cochon Properties, LLC | | Oil & Gas Operator | Aug 2016 |
| 1744 | Cochran Industrial Corporation | Cushing, OK 74023-1427 | Oil & Gas Operator | Apr 2001 |
| 1745 | Cochrane Resources, Inc. | Roosevelt, UT 84066 | Oil & Gas Operator | Jul 2026 |
| 1746 | Cockburn Oil Corporation | Lubbock, TX 79493 | Oil & Gas Operator | Jul 2005 |
| 1747 | Cockrell Oil Corporation | Houston, TX 77002-7348 | Oil & Gas Operator | Feb 2001 |
| 1748 | Cockrell Production Co., Inc. | Irving, TX 75014 | Oil & Gas Operator | Sep 2026 |
| 1749 | Cockriel Petroleum | | Oil & Gas Operator | Dec 1993 |
| 1750 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 1751 | Cody & Krysti Hunsperger | Osawatomie, KS 66064 | Oil Operator | Mar 2026 |
| 1752 | Cody C. Beasley | | Oil & Gas Operator | Apr 1987 |
| 1753 | Cody Company | Amarillo, TX 79121 | Oil & Gas Operator | Mar 2020 |
| 1754 | Cody Energy LLC | Houston, TX 77024 | Oil & Gas Operator | Jun 2020 |
| 1755 | Cody Energy, Inc. | Houston, TX 77077 | Oil & Gas Operator | Jul 2026 |
| 1756 | Cody Operating, Inc. | | Oil & Gas Operator | Jun 2026 |
| 1757 | Cody Resources, Inc. | Midland, TX 79705 | Oil & Gas Operator | Sep 2002 |
| 1758 | Cody, Ken L. | Longton, KS 67352 | Oil & Gas Operator | Mar 2026 |
| 1759 | Cody, Nancy M. | Fredonia, KS 66736 | Oil Operator | Jun 1998 |
| 1760 | Cody, Patricia H | | Oil & Gas Operator | Nov 2007 |
| 1761 | Coe Production Company | Talala, OK 74080-0264 | Oil & Gas Operator | Aug 2015 |
| 1762 | Coe Production Company LLC | Talala, OK 74080 | Oil Operator | May 2026 |
| 1763 | Coelho & Case Oil Company | | Oil & Gas Operator | Dec 1997 |
| 1764 | Coen Energy | | Oil Operator | Mar 1995 |
| 1765 | Coen Energy Corporation | Overland Park, KS 66221 | Oil Operator | May 2026 |
| 1766 | Coenergy Operating Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 1767 | Coert Holdings 1 LLC | Greenwich, CT 06830 | Oil & Gas Operator | Dec 2021 |
| 1768 | Cofer & Co LLC | Hobbs, NM 88240 | Oil & Gas Operator | May 2026 |
| 1769 | Coffee Petroleum | | Oil & Gas Operator | Jun 2026 |
| 1770 | Coffman Oil & Gas | | Oil & Gas Operator | Dec 1999 |
| 1771 | Coffman Oil & Real Estate Inc | Newport Beach, CA 92661 | Oil Operator | Dec 2024 |
| 1772 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 1773 | COG Petroleum Corporation | Oklahoma City, OK 73116-7326 | Oil & Gas Operator | Mar 2019 |
| 1774 | COG Production LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2026 |
| 1775 | Cohen & Kosovitz | | Oil & Gas Operator | May 1998 |
| 1776 | Coho Louisiana Production Co | | Gas Operator | Dec 1998 |
| 1777 | Coho Oil & Gas Inc | Coppell, TX 75019-8288 | Oil & Gas Operator | Mar 2015 |
| 1778 | Coho Resources Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 2002 |
| 1779 | Cohort Energy Company | Centennial, CO 80112 | Oil & Gas Operator | Feb 2007 |
| 1780 | Cokan Resources | Colby, KS 67701 | Oil Operator | Aug 1994 |
| 1781 | Coker Oil Company | Duncan, OK 73533-0818 | Oil Operator | Jan 2014 |
| 1782 | Coker, Jonathan C., Inc. | Austin, TX 78746 | Oil Operator | Mar 2011 |
| 1783 | Coker, Nel Rey Daws | Throckmorton, TX 76483 | Oil & Gas Operator | Mar 2008 |
| 1784 | Coker, Tom | Seymour, TX 76380 | Oil & Gas Operator | Sep 2006 |
| 1785 | Cokinos, Inc. | Beaumont, TX 77701 | Oil & Gas Operator | Aug 2003 |
| 1786 | Col-Kan Developm | | Oil & Gas Operator | Jan 1995 |
| 1787 | Col-Kan Development, Inc. | Russell, KS 67665 | Oil Operator | Jul 2005 |
| 1788 | Cola Resources LLC | Houston, TX 77019-5639 | Gas Operator | Nov 2015 |
| 1789 | Coldharbor Energy, LLC | Northbrook, IL 60062 | Oil & Gas Operator | Jul 2026 |
| 1790 | Coldren Oil & Gas Inc | Bartlesville, OK 74006-4729 | Oil & Gas Operator | Sep 1998 |
| 1791 | Cole, Frank W Engineering | Dallas, TX 75254 | Oil & Gas Operator | Mar 2006 |
| 1792 | Cole, John Otis | Big Spring, TX 79721 | Oil & Gas Operator | Jan 1999 |
| 1793 | Coleman & Johnson Oil Company | Brownwood, TX 76801 | Oil & Gas Operator | Sep 2026 |
| 1794 | Coleman County Project | Coleman, TX 76834 | Oil & Gas Operator | Oct 2012 |
| 1795 | Coleman Oil & Gas Corp. | Fort Worth, TX 76109 | Oil & Gas Operator | Sep 2026 |
| 1796 | Coleman Oil & Gas Inc | Farmington, NM 87499 | Oil & Gas Operator | Jan 2023 |
| 1797 | Coleman Oil Company | Bartlesville, OK 74003 | Oil Operator | Dec 2025 |
| 1798 | Coleman Oil LLC | Marlow, OK 73055 | Oil Operator | Nov 2021 |
| 1799 | Coleman Production | Stroud, OK 74079-9609 | Oil & Gas Operator | May 2013 |
| 1800 | Coleman, C R | | Gas Operator | Dec 2007 |