| 1601 | Clindco Inc | Bartlesville, OK 74006-6213 | Oil & Gas Operator | Oct 2019 |
| 1602 | Cline Oil And Gas Company | Santa Fe, NM 87501 | Oil & Gas Operator | Sep 1994 |
| 1603 | Cline Oil Inc | Bradford, PA 16701 | Oil & Gas Operator | Dec 2023 |
| 1604 | Cline Production Company | Billings, MT 59104 | Oil & Gas Operator | Jan 2024 |
| 1605 | Clint H. Woodington | | Oil Operator | Dec 1994 |
| 1606 | Clinton Bowers Estate | Manhatten, KS 66502 | Oil Operator | Dec 1998 |
| 1607 | Clinton County Crude Inc | Albany, KY 42602 | Oil Operator | Dec 2022 |
| 1608 | Clinton Gas Marketing Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 1988 |
| 1609 | Clinton Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Apr 1980 |
| 1610 | Clinton Petroleum Co Inc | Randolph, OH 44265 | Oil & Gas Operator | Dec 2009 |
| 1611 | Clinton Producti | | Oil Operator | Dec 1989 |
| 1612 | Clinton Production, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Dec 2023 |
| 1613 | Clinton, Orville L., Jr. | Paola, KS 66071 | Oil Operator | Apr 2005 |
| 1614 | Clipper Operating Co., Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jan 2000 |
| 1615 | CLK Energy Partners, LLC | | Oil & Gas Operator | Aug 2018 |
| 1616 | CLM Oil Production Inc | Bartlesville, OK 74006-4417 | Oil & Gas Operator | Jan 2024 |
| 1617 | CLM Operating | Graham, TX 76450 | Oil & Gas Operator | Aug 2017 |
| 1618 | Cloer VIrgil R | Oklahoma City, OK 73121 | Oil & Gas Operator | Apr 1993 |
| 1619 | Clofas Case Oil Co. | | Oil & Gas Operator | Nov 2023 |
| 1620 | Close, Bryan H. | Shamrock, TX 79079 | Gas Operator | Apr 2024 |
| 1621 | Clothier, David W. | Eastborough, KS 67206 | Oil & Gas Operator | Dec 2019 |
| 1622 | Cloud Peak Operating LLC | Casper, WY 82601 | Oil Operator | Jan 2024 |
| 1623 | Clovelly DRLG & Dev Co Inc | | Oil & Gas Operator | Oct 1983 |
| 1624 | Clovelly Oil Co. LLC | | Oil & Gas Operator | Nov 2023 |
| 1625 | Clovelly Oil Co., Inc. | | Oil & Gas Operator | Nov 2008 |
| 1626 | Clovelly Oil Co., Inc. - Ripco | | Oil & Gas Operator | Nov 1991 |
| 1627 | Clover Energy Corp | | Oil & Gas Operator | May 1980 |
| 1628 | Clover Oil Company | | Oil Operator | Dec 2023 |
| 1629 | Clover Production Company | Sourlake, TX 77659 | Oil & Gas Operator | Apr 2024 |
| 1630 | Clowser Well Service, Inc. | | Oil & Gas Operator | Dec 2021 |
| 1631 | CLR Gauging Corp. | Tuleta, TX 78162 | Oil & Gas Operator | Apr 2024 |
| 1632 | CLR Secondary Recovery, LLC | Mabank, TX 75147 | Oil & Gas Operator | Apr 2024 |
| 1633 | CLS Interests, Incorporated | Austin, TX 78734 | Oil & Gas Operator | Jan 1997 |
| 1634 | CLS Petroleum Holdings LLC | Wichita Falls, TX 76308 | Oil Operator | Apr 2024 |
| 1635 | Clubine, Jim L. | Independence, KS 67301 | Oil Operator | Jun 2023 |
| 1636 | Clute Oil Corporation | Cherry Hills VIllage, CO 80113 | Oil & Gas Operator | Dec 2023 |
| 1637 | CLV Oil & Gas Inc | Tulsa, OK 74169-0713 | Oil & Gas Operator | Apr 2020 |
| 1638 | CLX Oil & Gas LLC | | Oil & Gas Operator | Feb 2005 |
| 1639 | Clyde G. Kissinger | | Oil Operator | Jun 1964 |
| 1640 | Clyde H & Rae M Peters | Waterford, PA 16441-8872 | Gas Operator | Dec 2007 |
| 1641 | Clyde Petroleum | | Oil & Gas Operator | Dec 1988 |
| 1642 | Clyde W. Jones | | Oil Operator | Sep 2003 |
| 1643 | Clydesdale Energy LLC | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Nov 2019 |
| 1644 | Clymar, Inc | New Lexington, OH 43764 | Oil & Gas Operator | Dec 1996 |
| 1645 | CM Exploration Company Inc. | | Oil & Gas Operator | Apr 2009 |
| 1646 | CM Oil Co. | FT Stockton, TX 79735 | Oil & Gas Operator | Apr 2024 |
| 1647 | CM Oil Co., L.L.C. | | Oil Operator | Jan 2024 |
| 1648 | CM Production LLC | | Oil & Gas Operator | Aug 2020 |
| 1649 | CM TX Production, LLC | Lakewood, CO 80228 | Oil & Gas Operator | Feb 2023 |
| 1650 | Cmint Productions LLC | | Oil Operator | Oct 2021 |
| 1651 | CML Exploration, LLC | Austin, TX 78746 | Oil & Gas Operator | Apr 2024 |
| 1652 | Cmo Inc. | | Oil Operator | Dec 2023 |
| 1653 | Cmo LLC | | Oil & Gas Operator | Jan 2024 |
| 1654 | CMR Energy, L.P. | Houston, TX 77077 | Oil & Gas Operator | Apr 2024 |
| 1655 | CMR Operating LLC | | Oil & Gas Operator | Jun 2018 |
| 1656 | CMS Energy Inc | Dallas, TX 75287 | Oil & Gas Operator | Dec 2023 |
| 1657 | CMS Nomeco Oil & Gas Co. | Jackson, MI 49201 | Oil & Gas Operator | Jan 2015 |
| 1658 | CMS Oil And Gas Company | Jackson, MI 49201 | Oil & Gas Operator | Oct 2002 |
| 1659 | CMT Oil & Gas Company Inc | Tulsa, OK 74133-6754 | Oil & Gas Operator | Nov 2023 |
| 1660 | CMT Operating LLC | Cleveland, OK 74020-0113 | Oil & Gas Operator | Mar 2015 |
| 1661 | CMW Oil Company | | Oil & Gas Operator | Dec 1976 |
| 1662 | CMX Inc Of Kansas | Wichita, KS 67206-2561 | Oil & Gas Operator | Jan 2024 |
| 1663 | CMX, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Dec 2023 |
| 1664 | CN Operating Company | Drumright, OK 74030 | Oil & Gas Operator | Nov 1998 |
| 1665 | CNC Oil Co., Inc. | | Oil Operator | Aug 1991 |
| 1666 | CNG Development Co | | Oil & Gas Operator | Dec 2008 |
| 1667 | CNG Producing | New Orleans, LA 70112-6000 | Oil & Gas Operator | Jun 2000 |
| 1668 | CNG Producing Co.-Tulsa Div. | | Oil & Gas Operator | Jun 1986 |
| 1669 | CNG Producing Company | New Orleans, LA 70112 | Oil & Gas Operator | Dec 2015 |
| 1670 | CNS Energy, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2010 |
| 1671 | CNX Gas Company LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Jan 2024 |
| 1672 | Co Energy | Benbrook, TX 76126 | Oil & Gas Operator | Apr 2024 |
| 1673 | Co-Co Incorporat | | Oil Operator | Oct 1989 |
| 1674 | Co-Co Oil, Inc. | Lubbock, TX 79407 | Oil & Gas Operator | Aug 2003 |
| 1675 | Co-St Oil Operating Co Inc | Enid, OK 73706 | Oil & Gas Operator | Apr 1997 |
| 1676 | Co-Wil-Co, Incorporated | | Oil Operator | Dec 1990 |
| 1677 | Coachman Energy Operating Company LLC | Englewood, CO 80111 | Oil & Gas Operator | Aug 2018 |
| 1678 | Coal Creek Energy, LLC | Overland Park, KS 66221 | Oil Operator | Aug 2022 |
| 1679 | Coal Gas Recovery II LLC | Waynesburg, PA 15370 | Gas Operator | Dec 2017 |
| 1680 | Coal Gas Recovery LLC | Waynesburg, PA 15370-2330 | Gas Operator | Dec 2012 |
| 1681 | Coal Gas Recovery LP | Linthicum Heights, MD 21090-2227 | Gas Operator | Dec 2010 |
| 1682 | Coal Gas Transportation LLC | Cadiz, OH 43907 | Gas Operator | Dec 2016 |
| 1683 | Coal Oil & Gas Company | Ada, OK 74821-0008 | Oil & Gas Operator | Jan 2024 |
| 1684 | Coal Oil Inc. | | Oil & Gas Operator | Dec 1997 |
| 1685 | Coaleum Corporation | Dallas, TX 75205 | Oil & Gas Operator | Jan 2001 |
| 1686 | Coalinga Corporation | Houston, TX 77002 | Oil & Gas Operator | May 1999 |
| 1687 | Coast David | Bartlesville, OK 74006-0407 | Oil & Gas Operator | Jan 2024 |
| 1688 | Coast Exploration Co. | | Oil & Gas Operator | Nov 1997 |
| 1689 | Coast Petroleum Company | | Oil Operator | Nov 1998 |
| 1690 | Coast Supply Company LTD. | | Oil & Gas Operator | Dec 1991 |
| 1691 | Coastal Bend Petroleum Corp. | Corpus Chrsti, TX 78427 | Oil & Gas Operator | Dec 2002 |
| 1692 | Coastal Chem Inc | Midvale, UT 84047 | Oil & Gas Operator | Aug 2003 |
| 1693 | Coastal Derby Refining Co | Houston, TX 77046 | Oil Operator | Feb 1994 |
| 1694 | Coastal Expanse Oil & Gas | Austin, TX 78746 | Oil & Gas Operator | Apr 2024 |
| 1695 | Coastal Investments Inc. | El Campo, TX 77437 | Oil & Gas Operator | Apr 2024 |
| 1696 | Coastal Management Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 1697 | Coastal Minerals, Inc. | | Oil Operator | Aug 1991 |
| 1698 | Coastal New Mexico MGMT LLC | Carlsbad, NM 88220 | Oil & Gas Operator | Apr 2024 |
| 1699 | Coastal Oil & Ga | | Oil & Gas Operator | Oct 1996 |
| 1700 | Coastal Oil & Gas | | Oil & Gas Operator | Jul 1995 |