1 | M & M Investments | | Oil & Gas Operator | May 1990 |
2 | M. P. S. Prod. Co. | Houston, TX 77225 | Oil & Gas Operator | Dec 1996 |
3 | Mack Energy Co. | Duncan, OK 73534 | Oil & Gas Operator | Sep 2024 |
4 | Magna Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
5 | Mapco Oil & Gas Company | Tulsa, OK 74101-2115 | Oil & Gas Operator | Jan 1985 |
6 | Mapco Production Co | Billings, MT 59102 | Oil & Gas Operator | Apr 1994 |
7 | Maralo, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 1998 |
8 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Sep 2024 |
9 | Marion Corporation | | Oil & Gas Operator | Jan 2001 |
10 | Mark L Shidler Inc | Houston, TX 77055 | Oil & Gas Operator | Sep 2024 |
11 | Marmaton Oil Company | Houston, TX 77002 | Oil & Gas Operator | Jul 1998 |
12 | Marquee Corporation | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
13 | Marquis Resources, LLC | | Oil & Gas Operator | Jul 2021 |
14 | Marshall Petroleum, Inc. | Houston, TX 77040 | Oil & Gas Operator | Aug 2003 |
15 | Mayne & Mertz, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2013 |
16 | McConathy Production Co.,Inc. | | Oil & Gas Operator | Jun 1990 |
17 | McCord Exploration Co. | | Oil & Gas Operator | Dec 1990 |
18 | McGowan Working Partners | Jackson, MS 39296 | Oil & Gas Operator | Dec 2000 |
19 | McGowan Working Partners, Inc. | Jackson, MS 39296 | Oil & Gas Operator | Dec 2024 |
20 | McKenzie Management Inc. | | Oil & Gas Operator | Aug 1989 |
21 | McMoran Exploration Company | | Oil & Gas Operator | May 1985 |
22 | McMoran Production Co. | | Oil & Gas Operator | May 1985 |
23 | MCZ, Inc. | Houston, TX 77026 | Oil & Gas Operator | Sep 1990 |
24 | Medders Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2024 |
25 | Meridian Oil Inc. | Houston, TX 77210 | Oil & Gas Operator | Aug 1996 |
26 | Mideast Gas Systems, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2005 |
27 | Midstates Petroleum Company LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2018 |
28 | Midstates Petroleum Corp. | | Oil & Gas Operator | Dec 2008 |
29 | Miller Oil Field Services, Inc | | Oil Operator | Feb 1990 |
30 | Minatome Corporation | | Oil & Gas Operator | Sep 1987 |
31 | Miss-Lou Operating LLC | | Oil & Gas Operator | Oct 2024 |
32 | Miss-Lou Petroleum LLC | | Oil & Gas Operator | Jun 2011 |
33 | Mission Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
34 | Mitchell Energy Company L.P. | Spring, TX 77387 | Oil & Gas Operator | Mar 2008 |
35 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
36 | Mobil Oil E & P Southeast Inc | | Oil & Gas Operator | Sep 2013 |
37 | Moore McCormack Energy, Inc. | | Oil & Gas Operator | Jul 1988 |
38 | Moran Exploration, Inc. | | Oil & Gas Operator | Jan 1985 |
39 | Mosbacher Energy Company | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
40 | Murchison Oil & Gas Inc | Plano, TX 75024 | Oil & Gas Operator | Mar 2024 |
41 | MW Petroleum Corporation | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |