1 | O & G Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Oct 1996 |
2 | O & O Operators, LLC. | Fate, TX 75132 | Oil & Gas Operator | Dec 2024 |
3 | O Hill Enterprises, Inc. | La Grange, TX 78945 | Oil & Gas Operator | Jan 2014 |
4 | O S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | Jan 2018 |
5 | O&G Investments Inc. | Runge, TX 78151 | Oil & Gas Operator | Feb 2003 |
6 | O'Bar Operating Co., Inc. | Longview, TX 75604 | Oil & Gas Operator | Dec 2024 |
7 | O'Benco, Inc. | Shreveport, LA 71136 | Oil & Gas Operator | Dec 2024 |
8 | O'Blue Corp. | Kerrville, TX 78028 | Oil & Gas Operator | Mar 1998 |
9 | O'Brien Energy Company | Shreveport, LA 71136 | Oil & Gas Operator | Sep 2019 |
10 | O'Brien Energy Resources Corp | Portsmouth, NH 03801 | Oil & Gas Operator | Dec 2024 |
11 | O'Brien Resources LLC | Shreveport, LA 71136 | Oil Operator | Nov 2017 |
12 | O'Brien, George H. Jr. | Midland, TX 79701 | Oil & Gas Operator | Jun 1994 |
13 | O'Connor & Hewitt, LTD. | Victoria, TX 77901 | Oil & Gas Operator | Jun 1998 |
14 | O'Connor Energy Management, LLC | Victoria, TX 77902 | Oil Operator | Dec 2024 |
15 | O'Dell, Mitchell | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2024 |
16 | O'Donohoe, Jack | Wichita Falls, TX 76301 | Oil & Gas Operator | May 2002 |
17 | O'Leary'S Oil & Gas Inc. | Arcadia, FL 34266 | Oil & Gas Operator | May 2008 |
18 | O'Neal Cattle Co. | Pampa, TX 79066 | Gas Operator | Dec 2024 |
19 | O'Neal Oil & Gas Co | Fort Worth, TX 76107-1479 | Oil & Gas Operator | Sep 2024 |
20 | O'Neal Oil Company | Nocona, TX 76255 | Oil & Gas Operator | Dec 2024 |
21 | O'Neal Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 1999 |
22 | O'Neal, Lindell | Nocona, TX 76255 | Oil & Gas Operator | Aug 2024 |
23 | O'Neil, Pat | Wichita Falls, TX 76308 | Oil & Gas Operator | Nov 2005 |
24 | O'Neill Properties, LTD. | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
25 | O'Ryan Oil And Gas | Odessa, TX 79768 | Oil & Gas Operator | Dec 2024 |
26 | O'Sand Production, Inc. | Tomball, TX 77377 | Oil & Gas Operator | Aug 2003 |
27 | O'Sullivan Oil & Gas Co., Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2000 |
28 | O'Tool Oil & Gas, LLC | Dallas, TX 75219 | Oil & Gas Operator | Dec 2024 |
29 | O. H. B. Inc. | San Angelo, TX 76902 | Oil & Gas Operator | Sep 2019 |
30 | O. H. M. Operating | Pampa, TX 79065 | Oil & Gas Operator | Dec 2024 |
31 | O.G.O. Refining | Luling, TX 78648 | Oil & Gas Operator | Jun 2013 |
32 | O.G.P. Operating, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Dec 2024 |
33 | O.T. Oil | Kilgore, TX 75663 | Oil Operator | Dec 2024 |
34 | Oahe Oil Company | Texline, TX 79087 | Oil & Gas Operator | May 2004 |
35 | Oak Energy, LLC | Houston, TX 77027 | Oil & Gas Operator | Dec 2024 |
36 | Oak Hills Drilling & Oper., LLC | Holdenville, OK 74848 | Oil & Gas Operator | May 2013 |
37 | Oak Prairie Operations, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Dec 2024 |
38 | Oak Resources Inc | Tulsa, OK 74153 | Oil & Gas Operator | Aug 2013 |
39 | Oak Valley Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2015 |
40 | Oakland Petroleum Oper Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2024 |
41 | Oakmont Oil And Gas | Graham, TX 76450 | Oil Operator | Dec 2024 |
42 | Oakridge Energy, Inc. | Wichita Falls, TX 76302 | Oil & Gas Operator | Dec 2024 |
43 | Oakridge Oil And Gas, LP | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2024 |
44 | Oaktree Oil Company | Albany, TX 76430 | Oil & Gas Operator | Dec 2024 |
45 | Oasis Operating, Inc. | Lubbock, TX 79404 | Oil & Gas Operator | Nov 2020 |
46 | Oasis Petroleum Permian LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
47 | Oates, John Co., Inc. | Stinnett, TX 79083 | Oil & Gas Operator | Dec 2024 |
48 | Obax Oil And Gas LLC | Saint Louis, MO 63131 | Oil Operator | Dec 2024 |
49 | Oblaen Resources LLC | Wallis, TX 77485 | Oil & Gas Operator | Dec 2024 |
50 | Occidental Energy Company, Inc. | Houston, TX 77282 | Oil & Gas Operator | Jul 2021 |
51 | Occidental Energy Marketing, Inc. | Houston, TX 77227 | Gas Operator | Sep 2015 |
52 | Occidental Permian LTD. | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
53 | Occidental W TX Overthrust, Inc. | Houston, TX 77210 | Oil & Gas Operator | Dec 2021 |
54 | Ocean Energy Inc | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
55 | Octane Energy Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Dec 2024 |
56 | Odegard Energy, Inc. | Houston, TX 77024 | Oil & Gas Operator | Jul 2020 |
57 | Oden, Robin H., Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 1994 |
58 | Odessa Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
59 | Odessa Oil Investment Co., Inc. | Odessa, TX 79762 | Oil & Gas Operator | Nov 2016 |
60 | Odom, R. H. | Snyder, TX 79550 | Oil & Gas Operator | Jun 1996 |
61 | Odum Oil & Gas Co. | Harper, TX 78631 | Oil & Gas Operator | Dec 2024 |
62 | Odyssey Petroleum Company | Houston, TX 77010 | Oil & Gas Operator | Apr 1995 |
63 | Oexco, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
64 | Offset Oil & Gas | Big Spring, TX 79720 | Oil & Gas Operator | Aug 2003 |
65 | Offshore Group, Inc. The | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
66 | Offshore Oil & Gas Inc | Houston, TX 77063 | Oil & Gas Operator | Sep 1994 |
67 | Oft Inc. | Houston, TX 77079 | Oil & Gas Operator | Dec 2024 |
68 | Og Co., Inc. | Houston, TX 77057 | Oil & Gas Operator | Dec 2024 |
69 | Oga Operating L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Jan 2000 |
70 | Ogden Resources Corporation | Bryan, TX 77802 | Oil & Gas Operator | Dec 2024 |
71 | Ogden Resources, LTD. | Bryan, TX 77802 | Oil & Gas Operator | Feb 2009 |
72 | Ogog Operating, LLC | Dallas, TX 75367 | Oil & Gas Operator | Dec 2024 |
73 | Ogs Operating Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2008 |
74 | Ogx Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
75 | Ogx Resources LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2011 |
76 | Ohlhausen Oil Company | Abilene, TX 79608 | Oil & Gas Operator | Dec 2024 |
77 | Oil & Gas Acquisition Group, Inc | Austin, TX 78716 | Oil & Gas Operator | May 2003 |
78 | Oil & Gas Operations | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
79 | Oil & Gas Properties | Midland, TX 79704 | Oil & Gas Operator | Dec 2024 |
80 | Oil & Gas Property MGMT., Inc. | Dallas, TX 75201 | Oil & Gas Operator | Jul 1996 |
81 | Oil Coast Corp. | S Houston, TX 77587 | Oil & Gas Operator | Dec 2024 |
82 | Oil Lease Operating Co. | Coldspring, TX 77331 | Oil & Gas Operator | Aug 2003 |
83 | Oil Management Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2022 |
84 | Oil Patch Operators Co., L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2024 |
85 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Dec 2024 |
86 | Oil Projects, LLC | Houston, TX 77027 | Oil & Gas Operator | Dec 2024 |
87 | Oil Rock Energy Inc. / O.R.E. | Dallas, TX 75208 | Oil & Gas Operator | Dec 2024 |
88 | Oil Rock Resources, LLC | Weatherford, TX 76088 | Oil & Gas Operator | Jan 2024 |
89 | Oil Well Buyers Corp. | Houston, TX 77056 | Oil & Gas Operator | Jun 2024 |
90 | Oil, Gas, Etc. LLC | Katy, TX 77449 | Oil & Gas Operator | Dec 2024 |
91 | Oil-X Corp., The | FT Stockton, TX 79735 | Oil & Gas Operator | Dec 2024 |
92 | Oilex Int'L Investments, Inc. | Luling, TX 78648 | Oil & Gas Operator | Dec 2024 |
93 | Oilfield Management, Inc. (A) | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
94 | Oilrox Resources LLC | San Antonio, TX 78258 | Oil & Gas Operator | Aug 2023 |
95 | Oilton Resources, Inc. | Laredo, TX 78041 | Oil & Gas Operator | Dec 2024 |
96 | Oilwell Operators, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2024 |
97 | Oily Dog Operators Texas, LLC | Austin, TX 78746 | Oil Operator | Dec 2024 |
98 | Ojai Oil Company | Camarillo, CA 93012 | Oil & Gas Operator | Sep 2024 |
99 | Ojb, Inc. | Buda, TX 78610 | Oil & Gas Operator | Mar 2013 |
100 | Ojt, LLC | Richmond, TX 77469 | Oil Operator | Dec 2024 |