| 1701 | Cactus Oil Company | Pampa, TX 79066 | Oil & Gas Operator | Aug 2000 |
| 1702 | Cactus Petroleum Corporation | Houston, TX 77077 | Oil & Gas Operator | Apr 2024 |
| 1703 | Cada Operating, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2004 |
| 1704 | Caddell Well Service, Inc. | Prairie Lea, TX 78661 | Oil & Gas Operator | Apr 2024 |
| 1705 | Caddo Corporation | Austin, TX 78731 | Oil & Gas Operator | Apr 2024 |
| 1706 | Caddo Creek Corporation | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 1994 |
| 1707 | Caddo Management, Inc | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2024 |
| 1708 | Caddo Operating Inc. | Marshall, TX 75671 | Oil & Gas Operator | Apr 2024 |
| 1709 | Cadence Energy Partners, LLC | Blanchard, OK 73010 | Oil & Gas Operator | Jun 2010 |
| 1710 | Cag Petroleum Corp. | Dallas, TX 75382 | Oil & Gas Operator | Apr 2024 |
| 1711 | Cago, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Apr 2024 |
| 1712 | Cain & White | Lubbock, TX 79407 | Oil Operator | Apr 2024 |
| 1713 | Cain, L. L. & White, Wayne R. | Lubbock, TX 79407 | Oil & Gas Operator | Apr 2005 |
| 1714 | Caird Operating, LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Apr 2024 |
| 1715 | Cal Oil Company | Missouri City, TX 77459 | Oil Operator | May 2022 |
| 1716 | Cal-Mon Oil Company | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 1717 | Cal-T Oil Company, Incorporated | Borger, TX 79008 | Oil & Gas Operator | Feb 2008 |
| 1718 | Cal-Tex Exploratn & Prod Co LLC | San Antonio, TX 78228 | Oil & Gas Operator | Apr 2024 |
| 1719 | Cal-Tex Fossil, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 1720 | Cal-Tex Gas Transmission Co,Inc. | Mabank, TX 75147 | Oil & Gas Operator | Nov 1999 |
| 1721 | Cal-Tex Operating Co. | Manchaca, TX 78652 | Oil & Gas Operator | May 2020 |
| 1722 | Calame, Richard | Devine, TX 78016 | Oil Operator | Apr 2024 |
| 1723 | Caldera Operating Company LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2021 |
| 1724 | Caldwell Production Co. Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2010 |
| 1725 | Caldwell, J. A. | San Antonio, TX 78223 | Oil & Gas Operator | Jun 2000 |
| 1726 | Calfas Cattle & Oil, LLC | San Antonio, TX 78205 | Oil Operator | Apr 2024 |
| 1727 | Calfas Oil, LLC | San Antonio, TX 78205 | Oil Operator | Apr 2024 |
| 1728 | Calhoun & Ellison Oil Co. | San Antonio, TX 78248 | Oil & Gas Operator | Dec 1997 |
| 1729 | Cali Crude LLC | Austin, TX 78738 | Oil Operator | Apr 2024 |
| 1730 | Calico Operating Co., Inc. | Dallas, TX 75205 | Oil & Gas Operator | Dec 2002 |
| 1731 | Caliente Oil LLC | Cedar Park, TX 78613 | Oil & Gas Operator | Apr 2024 |
| 1732 | Calima Energy LLC | Electra, TX 76360 | Oil Operator | Apr 2024 |
| 1733 | Calistoga Energy Reserves, LLC | Houston, TX 77063 | Oil & Gas Operator | Apr 2024 |
| 1734 | Calk Oil Company | Lytle, TX 78052 | Oil Operator | Apr 2024 |
| 1735 | Calk Operating, LLC | Lytle, TX 78052 | Oil Operator | Apr 2024 |
| 1736 | Calk, Roger D. | Lytle, TX 78052 | Oil & Gas Operator | Apr 2024 |
| 1737 | Callahan Land Company | Richardson, TX 75081 | Oil & Gas Operator | Sep 2020 |
| 1738 | Callarman, David | Cisco, TX 76437 | Oil & Gas Operator | Apr 2024 |
| 1739 | Callaway Production Co., Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 1996 |
| 1740 | Calley, Bob | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 1741 | Callon (Eagle Ford) LLC | Houston, TX 77042 | Oil & Gas Operator | Jun 2023 |
| 1742 | Callon (Permian) LLC | Houston, TX 77042 | Oil & Gas Operator | Apr 2024 |
| 1743 | Callon Offshore Production, Inc. | Natchez, MS 39121 | Oil & Gas Operator | Dec 2005 |
| 1744 | Callon Permian II, LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 1745 | Callon Petroleum Operating Co | Houston, TX 77042 | Oil & Gas Operator | Apr 2024 |
| 1746 | Calpine Natural Gas Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2002 |
| 1747 | Calpine Natural Gas Company L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 1748 | Calpine Natural Gas L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2006 |
| 1749 | Caltex Energy Co. | Luling, TX 78648 | Oil & Gas Operator | Apr 2024 |
| 1750 | Calto Operating Company, Inc. | Dallas, TX 75225 | Oil & Gas Operator | May 2004 |
| 1751 | Calumet Oil Company | Oklahoma City, OK 73114 | Oil & Gas Operator | Feb 2019 |
| 1752 | Cam Company | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2004 |
| 1753 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | Apr 2024 |
| 1754 | Cambridge Production, Inc. | Amarillo, TX 79120 | Oil & Gas Operator | Nov 2020 |
| 1755 | Camco Saltwater Transport | George West, TX 78022 | Oil Operator | Feb 2015 |
| 1756 | Camco Saltwater Transport,L.L.C. | George West, TX 78022 | Oil Operator | Apr 2024 |
| 1757 | Camden Oil & Gas, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Dec 2005 |
| 1758 | Camden Reserves, Inc. | Houston, TX 77019 | Oil & Gas Operator | Mar 2011 |
| 1759 | Camden Resources, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Apr 2008 |
| 1760 | Camden Resources, LLC | Blanchard, OK 73010 | Oil & Gas Operator | Dec 2015 |
| 1761 | Camelot Oil And Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2003 |
| 1762 | Cameron Engineering, Inc | Montgomery, TX 77356 | Oil & Gas Operator | Jun 2003 |
| 1763 | Cameron Exploration, Inc. | Longview, TX 75604 | Oil & Gas Operator | Apr 2024 |
| 1764 | Cameron, Paul E., Jr., Inc. | Montgomery, TX 77356 | Oil & Gas Operator | May 2015 |
| 1765 | Caminar Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Apr 2024 |
| 1766 | Camino Real Technologies Inc | Temple, TX 76502 | Oil Operator | Apr 2024 |
| 1767 | Camoil, Inc. | Columbus, TX 78934 | Oil & Gas Operator | Apr 2024 |
| 1768 | Campana Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Apr 2024 |
| 1769 | Campbell, George M. | Lubbock, TX 79490 | Oil & Gas Operator | Apr 2003 |
| 1770 | Campbell, T. K. | Fort Worth, TX 76118 | Oil & Gas Operator | Mar 2006 |
| 1771 | Campsey Minerals | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2024 |
| 1772 | Camterra Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Apr 2024 |
| 1773 | Can'T Complain Operating Co. | Georgetown, TX 78633 | Oil & Gas Operator | Apr 2024 |
| 1774 | Can-Tex Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Nov 2003 |
| 1775 | Canadian River Trading Company | Tulsa, OK 74101 | Oil & Gas Operator | Feb 2018 |
| 1776 | Canan Mowrey Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2024 |
| 1777 | Canan Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2024 |
| 1778 | Candelero Oil & Gas Company | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 1779 | Candleridge Oil, Inc. | Fort Worth, TX 76109 | Oil & Gas Operator | Jun 2003 |
| 1780 | Cannan, Morris | San Antonio, TX 78205 | Oil & Gas Operator | Apr 2024 |
| 1781 | Cannon Operating Company LLC | Garland, TX 75043 | Oil Operator | Apr 2024 |
| 1782 | Cantera Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Nov 2017 |
| 1783 | Cantrell Oil Co. | Elbert, TX 76359 | Oil & Gas Operator | Aug 2003 |
| 1784 | Cantro Exploration, Inc. | San Antonio, TX 78270 | Oil & Gas Operator | May 2000 |
| 1785 | Cantu Operating, LLC | McAllen, TX 78504 | Oil Operator | Apr 2024 |
| 1786 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Mar 2024 |
| 1787 | Canyon Creek Energy Texas, LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2017 |
| 1788 | Canyon Creek Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2024 |
| 1789 | Canyon Exploration Co. | Amarillo, TX 79105 | Oil & Gas Operator | Jan 2024 |
| 1790 | Canyon Oil & Gas Exploration LLC | San Antonio, TX 78258 | Oil & Gas Operator | May 2002 |
| 1791 | Canyon Oil & Gas LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2024 |
| 1792 | Canyon Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Apr 2024 |
| 1793 | Canyon Operating Unit | San Angelo, TX 76904 | Oil & Gas Operator | Sep 1995 |
| 1794 | Canyon Reef Brine LLC | San Antonio, TX 78209 | Oil Operator | Apr 2024 |
| 1795 | Canyon Ridge Energy LLC | Iowa Park, TX 76367 | Oil Operator | Apr 2024 |
| 1796 | Cap Operating Inc. | Borger, TX 79008 | Oil & Gas Operator | Apr 2024 |
| 1797 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 1798 | Capco Offshore Of Texas, Inc. | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 1799 | Capco Offshore, Inc. | Irving, TX 75063 | Oil & Gas Operator | May 2012 |
| 1800 | Capco Resources Corporation | Irving, TX 75016 | Oil & Gas Operator | Mar 2004 |