1 | S & C Oil Co. Inc. | | Oil & Gas Operator | Apr 2025 |
2 | S & D Energy Associates Inc. | | Gas Operator | Dec 1986 |
3 | S & S Oil Company LLC | | Oil Operator | Mar 2025 |
4 | S. A. Camp Companies | | Oil & Gas Operator | Dec 1998 |
5 | S. H. Montgomery | | Oil & Gas Operator | Dec 1996 |
6 | S. M. Reynolds Opr. | | Gas Operator | Dec 1990 |
7 | Saba Petroleum Inc. | | Oil & Gas Operator | Mar 2006 |
8 | Sacramento Energy Inc. | | Oil & Gas Operator | Mar 2025 |
9 | Sacramento Oil & Gas Co. | | Gas Operator | Dec 2003 |
10 | Sage-California | | Oil Operator | Dec 1988 |
11 | Sampson Operators | | Oil & Gas Operator | Apr 2025 |
12 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2025 |
13 | San Carlos Oil & Gas Corp. | | Gas Operator | Dec 2003 |
14 | San Joaquin Facilities Management Inc. | | Oil & Gas Operator | Apr 2025 |
15 | Sanchez-O'Brien Oil & Gas Corp | Houston, TX 77057 | Oil & Gas Operator | May 1998 |
16 | Santa Ana Canyon Dev. Corp. | | Oil & Gas Operator | Mar 2025 |
17 | Santa Fe Energy Operating Partners L.P. | Houston, TX 77057 | Oil & Gas Operator | Dec 1994 |
18 | Santa Fe Minerals | | Gas Operator | Dec 1993 |
19 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
20 | Santa Maria Energy LLC | | Oil & Gas Operator | Dec 2024 |
21 | Say Energy Inc. | | Oil & Gas Operator | Dec 2004 |
22 | Seaward Resources Inc. | | Gas Operator | Dec 1984 |
23 | Second Wind Production Company Inc. | | Oil Operator | Dec 2013 |
24 | Security Pacific National Bank | | Oil Operator | Dec 1990 |
25 | Seneca Resources Co LLC | Cranberry Township, PA 16066 | Oil & Gas Operator | Apr 2025 |
26 | Seneca Western Minerals Corp. | | Oil & Gas Operator | Dec 2009 |
27 | Sentinel Peak Resources California LLC | | Oil & Gas Operator | Apr 2025 |
28 | Sequoia Exploration Inc. | | Oil & Gas Operator | Mar 2025 |
29 | Shadow Wolf Energy LLC | | Oil Operator | Apr 2025 |
30 | Shell Calif. Prod. Inc. | | Oil Operator | Dec 1980 |
31 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
32 | Shelly Energy Inc. | Berwyn, PA 19312 | Oil & Gas Operator | Apr 2025 |
33 | Sherman Havens | | Oil & Gas Operator | Mar 2025 |
34 | Shirley M. Lechler | | Oil & Gas Operator | Dec 2001 |
35 | Shoshone Oil Corp. | | Oil & Gas Operator | Dec 2005 |
36 | Sierra Reserve Company | | Oil Operator | Dec 1985 |
37 | Sierra Resources, Inc. | Oklahoma City, OK 73142 | Oil & Gas Operator | Apr 2025 |
38 | Signal Hill Petroleum Inc. | | Oil & Gas Operator | Apr 2025 |
39 | Silver Exploration Company | | Oil & Gas Operator | Mar 2025 |
40 | Silverbacq LLC | | Oil & Gas Operator | Apr 2025 |
41 | SJM Oil LLC | | Oil & Gas Operator | Dec 2009 |
42 | SM&O LLC | | Oil & Gas Operator | Mar 2025 |
43 | Soc Resources Inc. | | Oil & Gas Operator | Dec 2024 |
44 | Sojitz Energy Venture, Inc. | Houston, TX 77042 | Oil & Gas Operator | Feb 2018 |
45 | Solimar Energy LLC | | Oil & Gas Operator | Mar 2025 |
46 | Source Energy Corp. | | Gas Operator | Aug 2022 |
47 | South Coast Oil Corporation | Boulder, CO 80302 | Oil & Gas Operator | Oct 2015 |
48 | South Fork Ranch | | Oil & Gas Operator | Feb 2013 |
49 | Southern California Gas Company | | Oil & Gas Operator | Mar 2025 |
50 | Southridge Homes | | Oil & Gas Operator | Dec 1999 |
51 | St. James Oil Corporation | | Oil & Gas Operator | Dec 2009 |
52 | Standing Bear Petroleum Inc. | | Oil & Gas Operator | Dec 2005 |
53 | State Lands Commission | | Oil & Gas Operator | Mar 2025 |
54 | Stephen W. Bradford | | Oil Operator | Dec 1996 |
55 | Steve Smith | | Gas Operator | Dec 1987 |
56 | Steven A. Sayce | | Oil Operator | Jan 2021 |
57 | Stinnett Oil Company | | Oil Operator | Dec 1997 |
58 | Stockdale Energy Co. | | Gas Operator | Dec 1992 |
59 | Stockdale Oil & Gas Inc. | | Oil & Gas Operator | Dec 2001 |
60 | Stone Cabin Resources LLC | | Oil & Gas Operator | Apr 2025 |
61 | Storm Industries | | Oil & Gas Operator | Dec 1988 |
62 | Stowe Killingsworth | | Oil & Gas Operator | Apr 2023 |
63 | Strata-X Inc. | | Oil & Gas Operator | Mar 2025 |
64 | Stream Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2025 |
65 | Summit Energy LLC | | Oil & Gas Operator | Mar 2025 |
66 | Summit Exploration (California) LLC | | Oil & Gas Operator | Feb 2018 |
67 | Sumpf-Williams | | Gas Operator | Dec 1980 |
68 | Sun Mountain Oil & Gas | | Oil & Gas Operator | Dec 2020 |
69 | Sunray Petroleum Inc. | | Oil & Gas Operator | Mar 2025 |
70 | Sunset Exploration Inc. | | Oil & Gas Operator | Mar 2025 |
71 | Superior Oil Co. | Denver, CO 80217-5444 | Oil & Gas Operator | Feb 2001 |
72 | Superior Well Service Inc. | | Oil & Gas Operator | Sep 2007 |
73 | Synergy Oil & Gas LLC | | Oil & Gas Operator | Mar 2025 |
74 | Synergy Resources | Artesia, NM 88210 | Oil & Gas Operator | Jan 2015 |