| 4601 | Calpine Natural Gas Company L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 4602 | Calpine Natural Gas L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2006 |
| 4603 | Calresources LLC | | Oil & Gas Operator | Dec 1996 |
| 4604 | Caltex Energy Co. | Luling, TX 78648 | Oil & Gas Operator | Nov 2024 |
| 4605 | Caltico Oil Corp. | | Oil Operator | Aug 2024 |
| 4606 | Calto Operating Company, Inc. | Dallas, TX 75225 | Oil & Gas Operator | May 2004 |
| 4607 | Calumet Lubricants Company | | Oil Operator | Dec 1993 |
| 4608 | Calumet Oil Company | Oklahoma City, OK 73114 | Oil & Gas Operator | Feb 2019 |
| 4609 | Calumet Refining Co. | | Oil Operator | May 1991 |
| 4610 | Calvert Company | Oklahoma City, OK 73154-1589 | Oil & Gas Operator | Dec 2021 |
| 4611 | Calvert Drilling Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 1992 |
| 4612 | Calvert Exploration Co | | Oil & Gas Operator | Apr 1993 |
| 4613 | Calvert Operating LLC | Oklahoma City, OK 73118 | Oil Operator | Sep 2024 |
| 4614 | Calvin Explorati | | Oil & Gas Operator | Oct 1991 |
| 4615 | Calvin F Tennison | Granbury, TX 76049 | Oil & Gas Operator | Apr 2007 |
| 4616 | Calvin Noah, LLC | Valley Center, KS 67147 | Oil Operator | Jul 2024 |
| 4617 | Calyx Energy III LLC | Tulsa, OK 74136-4226 | Oil & Gas Operator | Aug 2024 |
| 4618 | Calyx Energy LLC | Tulsa, OK 74146-3807 | Oil & Gas Operator | Feb 2020 |
| 4619 | Calyx Exploration & Production | | Oil & Gas Operator | Jul 1991 |
| 4620 | Cam Company | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2004 |
| 4621 | Cam Development | | Oil & Gas Operator | Dec 1990 |
| 4622 | Camar Exploration | | Oil Operator | Jan 1989 |
| 4623 | Cambern, Rex | Montgomery, TX 77356 | Oil Operator | Jan 1996 |
| 4624 | Cambria Corporation | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 4625 | Cambria Oil Company | Casper, WY 82601 | Oil & Gas Operator | Dec 1996 |
| 4626 | Cambrian Hunter Inc | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2023 |
| 4627 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | Nov 2024 |
| 4628 | Cambrian Oil Inc | Odessa, TX 79760 | Oil & Gas Operator | Aug 1996 |
| 4629 | Cambridge Energy Corporation | | Oil & Gas Operator | Jul 2003 |
| 4630 | Cambridge Production, Inc. | Amarillo, TX 79120 | Oil & Gas Operator | Nov 2020 |
| 4631 | Cambron, Paul L. | Ness City, KS 67560 | Oil & Gas Operator | Dec 2019 |
| 4632 | Camco Oil, LLC | Whitesville, KY 42378 | Oil Operator | Dec 2022 |
| 4633 | Camco Resources, Inc. | | Oil Operator | Aug 1991 |
| 4634 | Camco Saltwater Transport | George West, TX 78022 | Oil Operator | Feb 2015 |
| 4635 | Camco Saltwater Transport,L.L.C. | George West, TX 78022 | Oil Operator | Nov 2024 |
| 4636 | Camco, Inc | Columbia, KY 42728 | Oil Operator | Dec 2022 |
| 4637 | Camden Oil & Gas, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Dec 2005 |
| 4638 | Camden Reserves, Inc. | Houston, TX 77019 | Oil & Gas Operator | Mar 2011 |
| 4639 | Camden Resources, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Apr 2008 |
| 4640 | Camden Resources, LLC | Blanchard, OK 73010 | Oil & Gas Operator | Dec 2015 |
| 4641 | Camelot Oil And Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2003 |
| 4642 | Cameron & Kincaid | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1986 |
| 4643 | Cameron Brothers | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1995 |
| 4644 | Cameron Development Co., Inc. | | Oil & Gas Operator | Mar 1988 |
| 4645 | Cameron Energy Co | Sheffield, PA 16347-2642 | Oil & Gas Operator | Dec 2023 |
| 4646 | Cameron Engineering, Inc | Montgomery, TX 77356 | Oil & Gas Operator | Jun 2003 |
| 4647 | Cameron Exploration, Inc. | Longview, TX 75604 | Oil & Gas Operator | Nov 2024 |
| 4648 | Cameron LNG, LLC | | Oil Operator | Jun 2024 |
| 4649 | Cameron Oil & Gas Company | | Gas Operator | Dec 2016 |
| 4650 | Cameron Oil & Gas Inc | Hobbs, NM 88240 | Oil & Gas Operator | Sep 2024 |
| 4651 | Cameron Production Co Inc | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2023 |
| 4652 | Cameron Properties | Columbus, OH 43220 | Oil & Gas Operator | Dec 1996 |
| 4653 | Cameron, Paul E., Jr., Inc. | Montgomery, TX 77356 | Oil & Gas Operator | May 2015 |
| 4654 | Camex Operating Company | | Oil & Gas Operator | Jun 2024 |
| 4655 | Camex, Inc. | | Oil & Gas Operator | Jun 1992 |
| 4656 | Caminar Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Nov 2024 |
| 4657 | Camino Natural Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2024 |
| 4658 | Camino Real Technologies Inc | Temple, TX 76502 | Oil Operator | Nov 2024 |
| 4659 | Camio Enterprises, LLC | Augusta, KS 67010 | Oil Operator | Jul 2024 |
| 4660 | Camio Oil Compan | | Oil & Gas Operator | Apr 1991 |
| 4661 | Camio Oil Company | | Oil Operator | Dec 2004 |
| 4662 | Camo Oil LLC | Stillwater, OK 74074 | Oil & Gas Operator | Sep 2024 |
| 4663 | Camoil, Inc. | Columbus, TX 78934 | Oil & Gas Operator | Nov 2024 |
| 4664 | Campana Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Nov 2024 |
| 4665 | Campanella, George L | Great Falls, MT 59403 | Oil & Gas Operator | Sep 2024 |
| 4666 | Campbell & Assoc.-Ring | | Oil Operator | Nov 1980 |
| 4667 | Campbell & Associates | | Oil & Gas Operator | Aug 1987 |
| 4668 | Campbell & Hedrick | Midland, TX 79702 | Oil & Gas Operator | Jun 2014 |
| 4669 | Campbell B R | Ardmore, OK 73401 | Oil & Gas Operator | Oct 2002 |
| 4670 | Campbell Co. Et Al | | Oil Operator | Apr 1986 |
| 4671 | Campbell Dale H | McKeesport, PA 15135-3307 | Gas Operator | Dec 2017 |
| 4672 | Campbell Don G | Konawa, OK 74849 | Oil Operator | Feb 1997 |
| 4673 | Campbell Energy Corp. | | Oil & Gas Operator | May 1992 |
| 4674 | Campbell Energy LLC | Carmi, IL 62821 | Oil Operator | Jul 2024 |
| 4675 | Campbell Oil & Gas Inc | Indiana, PA 15701-0278 | Oil & Gas Operator | Sep 2024 |
| 4676 | Campbell Production Company | Tulsa, OK 74137-4145 | Oil & Gas Operator | Mar 2015 |
| 4677 | Campbell Robert | | Oil & Gas Operator | Aug 1990 |
| 4678 | Campbell Wells Corporation | | Oil Operator | Dec 1995 |
| 4679 | Campbell, G S | Park City, UT 84060 | Oil & Gas Operator | Apr 1991 |
| 4680 | Campbell, George M. | Lubbock, TX 79490 | Oil & Gas Operator | Apr 2003 |
| 4681 | Campbell, Robert E. | Wichita, KS 67206 | Oil & Gas Operator | May 2019 |
| 4682 | Campbell, T. K. | Fort Worth, TX 76118 | Oil & Gas Operator | Mar 2006 |
| 4683 | Campbells Creek Gas Company | Given, WV 25245 | Gas Operator | Dec 2021 |
| 4684 | Campground Corporation | | Oil Operator | Nov 2023 |
| 4685 | Camphire George E. | Danville, OH 43014 | Oil & Gas Operator | Dec 2023 |
| 4686 | Camplin, Raymond | Greenville, KY 42345 | Oil Operator | Dec 2018 |
| 4687 | Campo Verde Oil Inc. | | Oil Operator | Sep 2024 |
| 4688 | Campsey Minerals | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2024 |
| 4689 | Camterra Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Nov 2024 |
| 4690 | Camtex Industries Inc. | | Oil Operator | Dec 1996 |
| 4691 | Camwest II LP | McKinney, TX 75070 | Oil & Gas Operator | Jul 2007 |
| 4692 | Camwest Limited Partnership | Denver, CO 80202 | Oil & Gas Operator | Apr 2004 |
| 4693 | Can Do Enterprises | | Oil Operator | Jun 2024 |
| 4694 | Can'T Complain Operating Co. | Georgetown, TX 78633 | Oil & Gas Operator | Nov 2024 |
| 4695 | Can-Tex Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Nov 2003 |
| 4696 | Canaan Energy Corporation | Oklahoma City, OK 73154-8806 | Oil & Gas Operator | Mar 2015 |
| 4697 | Canaan Exploration Inc | Oklahoma City, OK 73123 | Oil & Gas Operator | Jan 1998 |
| 4698 | Canaan Petroleum Inc | San Antonio, TX 78230-4042 | Oil & Gas Operator | Aug 2024 |
| 4699 | Canaan Resources LLC | Oklahoma City, OK 73118-1126 | Gas Operator | Oct 2023 |
| 4700 | Canaan Resources X LLC | Oklahoma City, OK 73103-4925 | Oil & Gas Operator | Aug 2024 |