| 1 | Gas Masters Of America, Inc. | | Oil & Gas Operator | Dec 2023 |
| 2 | Gas Producing Enterprises Inc. | | Oil & Gas Operator | Oct 1985 |
| 3 | Gas Transportation Corporation | | Oil & Gas Operator | Aug 1995 |
| 4 | Ged Oil Corporation | | Oil & Gas Operator | Aug 2012 |
| 5 | General American Oil Co Of TX | | Oil & Gas Operator | Jun 1983 |
| 6 | General Crude Oil Co | Houston, TX 77005 | Oil & Gas Operator | Dec 1979 |
| 7 | General Electric Company | | Oil & Gas Operator | Sep 1987 |
| 8 | Goldking Capital Management, LLC | | Oil & Gas Operator | Aug 2023 |
| 9 | Goldking Operating Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Jun 2007 |
| 10 | Goldking Prod. Co. | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 11 | Goodrich Oil Company | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2001 |
| 12 | Goodrich Operating Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2006 |
| 13 | Goodrich Petroleum Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2022 |
| 14 | Goodrich Petroleum Corporation | | Oil & Gas Operator | Sep 1996 |
| 15 | Graham Exploration, LTD. | | Oil & Gas Operator | Oct 1993 |
| 16 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 17 | Graham-McCormick Oper. PRTSHP. | | Oil & Gas Operator | Aug 1989 |
| 18 | Grand Energy, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Oct 2002 |
| 19 | Grand Operating, Inc. | Addison, TX 75001 | Oil & Gas Operator | Dec 2020 |
| 20 | Great Southern Oil &Gas Co Inc | | Oil & Gas Operator | Dec 2004 |
| 21 | Gryphon Exploration Company | Mandeville, LA 70471 | Oil & Gas Operator | Aug 2009 |
| 22 | Guaranty Energy Corporation | | Oil & Gas Operator | Aug 1990 |
| 23 | Gulf Oil Corp. | Denver, CO 80201-0599 | Oil & Gas Operator | Dec 2014 |
| 24 | Gulfport Energy Corporation | Oklahoma City, OK 73134-5003 | Oil & Gas Operator | Feb 2024 |
| 25 | Gulfstream Resources, Inc. | | Oil & Gas Operator | May 1996 |