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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| H & B Petroleum Corp. | Kansas | 7,787 BBLs | 791 MCF | Jan 1980 - May 2026 |
| H & C Oil Operating Inc. | Kansas | 4,917 BBLs | 0 MCF | Jan 1980 - May 2026 |
| H3 Oil & Gas | Kansas | 775 BBLs | 5,736 MCF | Jan 2020 - May 2026 |
| Habit Petroleum, LLC | Kansas | 810 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Haddock, Jack L. | Kansas | 162 BBLs | 0 MCF | Jan 1980 - Apr 2026 |
| Heritage Oil L.L.C. | Kansas | 468 BBLs | 0 MCF | Jan 2020 - May 2026 |
| Herman L. Loeb, LLC | Kansas | 25,775 BBLs | 110,423 MCF | Jan 1980 - May 2026 |
| Hertel Oil Company LLC | Kansas | 1,102 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Hess Oil Company | Kansas | 8,012 BBLs | 0 MCF | Jan 1980 - May 2026 |
| HG Oil Holdings, LLC | Kansas | 15,966 BBLs | 0 MCF | Jan 2020 - May 2026 |
| Ia Operating, Inc. | Kansas | 5,586 BBLs | 0 MCF | Apr 1997 - May 2026 |
| Infinity Oil, Inc. | Kansas | 961 BBLs | 0 MCF | Feb 2012 - May 2026 |
| J & D Investment Co. | Kansas | 160 BBLs | 0 MCF | Jan 1980 - Apr 2026 |
| Jason Oil Company, LLC | Kansas | 6,066 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Kansas Crude Investments LLC | Kansas | 1,279 BBLs | 0 MCF | Jan 2010 - May 2026 |
| Kantek Tank Service, LLC | Kansas | 163 BBLs | 0 MCF | Jan 2020 - May 2026 |
| Karst Brothers Oil Co, A General Partnership | Kansas | 329 BBLs | 0 MCF | Jan 1980 - May 2026 |
| King Oil Operations, LLC | Kansas | 642 BBLs | 0 MCF | Jan 2010 - May 2026 |
| Knighton Oil Company, Inc. | Kansas | 5,376 BBLs | 1,282 MCF | Jan 1980 - May 2026 |
| Koron Investments, Inc. | Kansas | 826 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Landmark Resources, Inc. | Kansas | 11,536 BBLs | 5,393 MCF | Jan 1980 - May 2026 |
| Lario Oil & Gas Company | Kansas | 34,519 BBLs | 25,648 MCF | Jan 1980 - May 2026 |
| Lebsack Oil Production Inc. | Kansas | 5,328 BBLs | 2,051 MCF | Jan 1980 - May 2026 |
| Legacy Energy LLC | Kansas | 480 BBLs | 0 MCF | Jan 2010 - May 2026 |
| Lonestar Oil Co | Kansas | 494 BBLs | 0 MCF | Jan 1980 - May 2026 |
| M G Oil Inc | Kansas | 7,148 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Mad Operators LLC | Kansas | 11,093 BBLs | 513 MCF | Jan 2020 - May 2026 |
| Mai Oil Operations, Inc. | Kansas | 47,787 BBLs | 7,745 MCF | Jan 1980 - May 2026 |
| McCoy Petroleum Corporation | Kansas | 24,879 BBLs | 36,933 MCF | Jan 1980 - May 2026 |
| Meridian Energy Inc. | Kansas | 4,781 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Messman Corporation | Kansas | 162 BBLs | 0 MCF | Jan 1980 - Apr 2026 |
| Michael D. Weilert Oil Company | Kansas | 1,471 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Mid-Continent Energy Corp. | Kansas | 161 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Mid-Continent Resources, Inc. | Kansas | 1,256 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Mike Kelso Oil, Inc. | Kansas | 14,196 BBLs | 103,812 MCF | Jan 1980 - May 2026 |
| MJT Oil | Kansas | 465 BBLs | 0 MCF | Oct 1980 - May 2026 |
| Murfin Drilling Co., Inc. | Kansas | 75,583 BBLs | 1,488 MCF | Jan 1980 - May 2026 |
| Mustang Energy Corporation | Kansas | 7,536 BBLs | 0 MCF | Jan 1980 - May 2026 |
| New Age Oil LLC | Kansas | 2,152 BBLs | 0 MCF | Feb 1982 - May 2026 |
| Oil Producers, Inc. Of Kansas | Kansas | 6,740 BBLs | 41,070 MCF | Jan 1980 - May 2026 |
| Owen'S Pumping Service | Kansas | 690 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Patterson Energy LLC | Kansas | 60,183 BBLs | 11 MCF | Jan 2010 - May 2026 |
| Peak Operating LLC | Kansas | 1,783 BBLs | 0 MCF | Jan 2010 - May 2026 |
| Pfeifer Explorations, LLC | Kansas | 640 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Production Drilling, Inc. | Kansas | 3,527 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Prospect Oil & Gas Corp | Kansas | 4,359 BBLs | 0 MCF | Jan 1980 - May 2026 |
| R. P. Nixon Operations, Inc | Kansas | 2,973 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Rama Operating Co., Inc. | Kansas | 14,240 BBLs | 2,388 MCF | Jan 1980 - May 2026 |
| Raney Oil Company, LLC | Kansas | 3,585 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Raymond Oil Company, Inc. | Kansas | 9,478 BBLs | 0 MCF | Jan 1980 - May 2026 |