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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Shackelford Oil Co | New Mexico | 3,751 BBLs | 12,946 MCF | Jan 1993 - Mar 2026 |
| Shakespeare Oil Co Inc | Montana | 1,929 BBLs | 0 MCF | May 1996 - Mar 2026 |
| Shakespeare Oil Co., Inc. | Kansas | 29,467 BBLs | 0 MCF | Jan 2004 - Jan 2026 |
| Shelby Resources LLC | Kansas | 1,271 BBLs | 0 MCF | Feb 1980 - Jan 2026 |
| Shelf Energy, LLC | Louisiana | 10,346 BBLs | 10,696 MCF | Nov 2008 - Dec 2024 |
| Shield Energy Resources, LLC | Louisiana | 1,201 BBLs | 0 MCF | Jan 2020 - Dec 2024 |
| Shields Oil Producers Inc. | Kansas | 2,584 BBLs | 0 MCF | Jan 1980 - Jan 2026 |
| Signal Hill Operating LLC | Wyoming | 14,131 BBLs | 1,352 MCF | Jan 2025 - Apr 2026 |
| Signal Operating L.L.C. | Louisiana | 2,891 BBLs | 0 MCF | Sep 2024 - Jan 2025 |
| Silver Hill Energy Operating, LLC | Louisiana | 0 BBLs | 3,442,822 MCF | Dec 2021 - Dec 2024 |
| Silver Hill Energy Operating, LLC | North Dakota | 366,248 BBLs | 814,876 MCF | Jul 2024 - Mar 2026 |
| Simcoe LLC | Colorado | 7 BBLs | 6,754,592 MCF | Jan 1999 - Feb 2026 |
| Simcoe LLC | New Mexico | 7,655 BBLs | 6,577,907 MCF | May 2020 - Mar 2026 |
| Sinclair Oil & Gas Company | Montana | 1,380 BBLs | 2,116 MCF | Dec 1995 - Mar 2026 |
| Single Barrel Oil And Gas LLC | Louisiana | 7,355 BBLs | 0 MCF | Oct 2023 - Dec 2024 |
| Siroky Oil Management | Kansas | 2,193 BBLs | 7,332 MCF | Jan 1980 - Jan 2026 |
| Six Bar Oil LLC | Wyoming | 7,304 BBLs | 949 MCF | Apr 2017 - Mar 2026 |
| Sklar Exploration Company L.L.C. | Alabama | 32,964 BBLs | 42,582 MCF | May 2006 - Mar 2026 |
| Slawson Exploration Company Inc | Montana | 12,338 BBLs | 29,274 MCF | Jun 1993 - Mar 2026 |
| Slawson Exploration Company, Inc. | North Dakota | 1,376,607 BBLs | 2,441,837 MCF | Jun 1989 - Mar 2026 |
| SMC Oil & Gas, Inc. | New Mexico | 3,912 BBLs | 13,334 MCF | Jan 2018 - Mar 2026 |
| SMG Resources LLC | Kansas | 1,922 BBLs | 636 MCF | Jan 2020 - Jan 2026 |
| Smith Energy LLC | Colorado | 0 BBLs | 67,916 MCF | Jan 1999 - Mar 2026 |
| Smith Red Plains Production LLC | Wyoming | 1,989 BBLs | 0 MCF | Dec 2022 - Mar 2026 |
| Snow Oil & Gas Inc | New Mexico | 1,195 BBLs | 1,637 MCF | Jan 1993 - Mar 2026 |
| Snowy Owl LLC | Wyoming | 9,849 BBLs | 1,804 MCF | Dec 2012 - Mar 2026 |
| Sogc, Inc. | North Dakota | 170,407 BBLs | 628,651 MCF | Dec 2022 - Mar 2026 |
| Soldier Operating LLC | Louisiana | 6,720 BBLs | 3,716 MCF | Oct 2020 - Dec 2024 |
| Solis Partners, L.L.C. | New Mexico | 212 BBLs | 115,519 MCF | Sep 2020 - Mar 2026 |
| Somoco Inc | Michigan | 1,551 BBLs | 643 MCF | Oct 1985 - Mar 2026 |
| Somont Oil Company, Inc. | Montana | 5,262 BBLs | 17,438 MCF | Jan 1986 - Mar 2026 |
| South Carlton Operating Company, LLC | Alabama | 8,886 BBLs | 0 MCF | Jun 1950 - Feb 2026 |
| South Pass Petroleum Inc | Wyoming | 769 BBLs | 18,381 MCF | Sep 2018 - Mar 2026 |
| Southern Oil Of Louisiana LLC | Louisiana | 29,791 BBLs | 73,581 MCF | Nov 2019 - Dec 2024 |
| Southwest Royalties Inc | New Mexico | 61,456 BBLs | 503,462 MCF | Jan 1993 - Mar 2026 |
| Southwestern Production Corporation | Wyoming | 18,765 BBLs | 66,109 MCF | Jun 1999 - Mar 2026 |
| Sparrow Oil & Gas LLC | North Dakota | 1,723 BBLs | 850 MCF | Jan 2024 - Apr 2026 |
| Spartan Royalties, LLC | Louisiana | 5,891 BBLs | 0 MCF | Jun 2024 - Dec 2024 |
| Special Energy Corp | New Mexico | 3,691 BBLs | 35,065 MCF | Dec 1994 - Mar 2026 |
| Spellbound Energy LLC | Wyoming | 5,374 BBLs | 0 MCF | Jun 2018 - Mar 2026 |
| Spotted Hawk Development, LLC | North Dakota | 8,580 BBLs | 15,357 MCF | Jun 2022 - Mar 2026 |
| Springline Operating LLC | North Dakota | 11,484 BBLs | 5,741 MCF | Feb 2026 - Mar 2026 |
| Spur Energy Partners LLC | New Mexico | 784,882 BBLs | 2,563,769 MCF | Jul 2019 - Mar 2026 |
| St Croix Operating Inc | Colorado | 1,141 BBLs | 0 MCF | Jan 1999 - Feb 2026 |
| Staab Oil Co., A General Partnership | Kansas | 4,580 BBLs | 0 MCF | Jan 1980 - Jan 2026 |
| Stanolind Permian LLC | New Mexico | 2,818 BBLs | 2,762 MCF | Mar 2021 - Mar 2026 |
| Steamboat Oil And Gas LLC | Wyoming | 1,049 BBLs | 0 MCF | Sep 2022 - Apr 2026 |
| Stearns Oil Company LLC | North Dakota | 1,908 BBLs | 1,080 MCF | Nov 2021 - Mar 2026 |
| Stelbar Oil Corporation, Inc. | Kansas | 5,339 BBLs | 2,819 MCF | Jan 1980 - Jan 2026 |
| Stephens & Johnson Op Co | New Mexico | 15,642 BBLs | 54,856 MCF | Jan 1993 - Mar 2026 |