| 1 | Abercrombie A L | | Oil & Gas Operator | Nov 1995 |
| 2 | Abercrombie Energy, LLC | Wichita, KS 67212 | Oil & Gas Operator | Mar 2026 |
| 3 | Adeco, Inc. | Hays, KS 67601 | Oil Operator | Mar 2026 |
| 4 | Advantage Resour | | Oil & Gas Operator | May 1994 |
| 5 | Bach Oil Production | | Oil Operator | Mar 2026 |
| 6 | Beacon Explorati | | Oil Operator | Apr 1987 |
| 7 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Mar 2026 |
| 8 | Bennett Oil Company, LLC | Russell, KS 67665 | Oil Operator | Mar 2026 |
| 9 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Jul 2026 |
| 10 | Black Oak Exploration, LLC | Denver, CO 80210 | Oil & Gas Operator | Mar 2026 |
| 11 | Blueridge Petroleum Corporation | Edmond, OK 73003 | Oil & Gas Operator | Mar 2026 |
| 12 | Brazos Petroleum | | Oil & Gas Operator | Aug 1995 |
| 13 | Burch Exploratio | | Oil Operator | Mar 1991 |
| 14 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Mar 2026 |
| 15 | Cascade Oil (Dba) | Ness City, KS 67560 | Oil Operator | Mar 1998 |
| 16 | Central Operating Inc | Denver, CO 80202 | Oil & Gas Operator | May 2026 |
| 17 | Cholla Production LLC | Littleton, CO 80127 | Oil & Gas Operator | Mar 2026 |
| 18 | Citation Oil & G | | Oil & Gas Operator | Dec 1996 |
| 19 | Coastal Oil & Ga | | Oil & Gas Operator | Oct 1996 |
| 20 | Coastal Oil & Gas Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 21 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Mar 2026 |
| 22 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 23 | Corsair Energy, LC | Wichita, KS 67202 | Oil & Gas Operator | Apr 2004 |
| 24 | Culbreath Oil & Gas Co Inc | Tulsa, OK 74135 | Oil & Gas Operator | May 2026 |
| 25 | Darrah Oil Company, LLC | Wichita, KS 67201 | Oil & Gas Operator | Jul 2026 |
| 26 | DCF Exploration | Lakewood, CO 80215 | Oil Operator | Dec 1989 |
| 27 | Du Pont Oil Comp | | Oil Operator | May 1984 |
| 28 | Eagle Creek Corporation | Andover, KS 67002 | Oil & Gas Operator | Mar 2026 |
| 29 | Eagle Exploration Co., Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Dec 2019 |
| 30 | Echelon Land & Exploration Co. | Havana, FL 32333 | Oil Operator | Apr 1997 |
| 31 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Mar 2026 |
| 32 | Edmiston Oil Com | | Oil & Gas Operator | May 1994 |
| 33 | Edmiston Oil Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Mar 2026 |
| 34 | Elevate Energy LTD | Aurora, CO 80016 | Oil & Gas Operator | Mar 2026 |
| 35 | Energy Search Operating Company | | Oil Operator | Dec 2009 |
| 36 | Enterprise Inc | Hays, KS 67601 | Oil Operator | Sep 2015 |
| 37 | Eufaula Enterpri | | Oil & Gas Operator | Mar 1986 |
| 38 | F & M Oil Compan | | Oil & Gas Operator | Feb 1993 |
| 39 | G L M Company | | Oil Operator | Mar 2026 |
| 40 | Great Plains Energy, Inc. | Lincoln, NE 68516 | Oil & Gas Operator | Mar 2026 |
| 41 | Green Oilfield Production L.L.C. | Jennings, KS 67643 | Oil Operator | Mar 2026 |
| 42 | H & M Petroleum Corporation | Lincoln, NE 68516 | Oil & Gas Operator | Jun 2025 |
| 43 | H & R Expl & Production Inc | Sidney, NE 69162 | Oil Operator | May 2007 |
| 44 | Halliburton Oil | | Oil & Gas Operator | Sep 2008 |
| 45 | Herman L. Loeb LLC | Lawrenceville, IL 62439 | Oil & Gas Operator | Mar 2026 |
| 46 | Hrbek, R. L. | Merino, CO 80741 | Oil & Gas Operator | Jan 2024 |
| 47 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |
| 48 | Ia Operating, Inc. | Edmond, OK 73003 | Oil Operator | Mar 2026 |
| 49 | Innes Petroleum | | Oil Operator | Nov 1994 |
| 50 | J And A Oil, LLC | Hays, KS 67601 | Oil Operator | Feb 2020 |
| 51 | Jason Oil Compan | | Oil Operator | Sep 1992 |
| 52 | Jo-Allyn Oil Co Inc | Laverne, OK 73848 | Oil & Gas Operator | May 2026 |
| 53 | John O. Farmer, Inc. | | Oil & Gas Operator | Dec 1996 |
| 54 | Mad Operators LLC | | Oil & Gas Operator | Mar 2026 |
| 55 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 56 | Marexco, Inc. | Castle Rock, CO 80104 | Oil & Gas Operator | Mar 2026 |
| 57 | Maxus Exploratio | | Oil Operator | Jun 1991 |
| 58 | Merit Energy Company, LLC | Dallas, TX 75240 | Oil & Gas Operator | Mar 2026 |
| 59 | Monarch Energy C | | Oil Operator | Nov 1987 |
| 60 | Murfin Drilling | | Oil & Gas Operator | Jul 1997 |
| 61 | Murfin DRLG Co Inc | Wichita, KS 67202 | Oil & Gas Operator | May 2026 |
| 62 | Mustang Drilling | | Oil & Gas Operator | Nov 1996 |
| 63 | N.F. Producers, Inc. | Berthoud, CO 80513 | Oil Operator | Mar 2026 |
| 64 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Mar 2026 |
| 65 | Norwood Oil | Greeley, CO 80634 | Oil Operator | Mar 1996 |
| 66 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Jul 2026 |
| 67 | Okmar Oil Compan | | Oil & Gas Operator | Feb 1995 |
| 68 | Outlaw Well Service LLC | Hays, KS 67601 | Oil Operator | Jan 2026 |
| 69 | Oxford Explorati | | Oil & Gas Operator | Mar 1993 |
| 70 | Pauley Oil | | Oil Operator | Mar 2026 |
| 71 | Petco Energy Ser | | Oil Operator | Apr 1986 |
| 72 | Petroleum Manage | | Oil & Gas Operator | Oct 1994 |
| 73 | Philpott Oil & Gas Co Inc | Atwood, KS 67730 | Oil Operator | Aug 2010 |
| 74 | Platte Valley Oi | | Oil Operator | Jul 1987 |
| 75 | Platte Valley Oil Co Inc | Ralston, NE 68127 | Oil Operator | Mar 2026 |
| 76 | Pratt Well Service, Inc. | Pratt, KS 67124 | Oil & Gas Operator | Mar 2026 |
| 77 | Quantum Operating Company | Denver, CO 80201 | Oil & Gas Operator | Dec 2012 |
| 78 | Raymond Oil Comp | | Oil & Gas Operator | Dec 1996 |
| 79 | Ritchie Explorat | | Oil & Gas Operator | Dec 1996 |
| 80 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Mar 2026 |
| 81 | Robuck Petroleum, LLC | Nacogdoches, TX 75965 | Oil & Gas Operator | Jul 2026 |
| 82 | Ron'S Oil Operations Inc | Penokee, KS 67659 | Oil Operator | Dec 2018 |
| 83 | S & W Drilling C | | Oil Operator | May 1985 |
| 84 | Sauvage W W Inco | | Oil Operator | Nov 1989 |
| 85 | Slawson Donald C | Wichita, KS 67202 | Oil & Gas Operator | Oct 2025 |
| 86 | Source Petroleum | Wichita, KS 67202 | Oil & Gas Operator | Oct 1993 |
| 87 | Stoeppelwerth DR | | Oil Operator | May 1993 |
| 88 | Stratakan Exploration, LLC | Plainville, KS 67663 | Oil & Gas Operator | Mar 2026 |
| 89 | Stromquist C Dal | | Oil & Gas Operator | Aug 1991 |
| 90 | Stromquist, C. Dale, A General Partnership | Liberal, KS 67901 | Oil & Gas Operator | Aug 2010 |
| 91 | Suemaur Expl. & Prod., LLC | Corpus Christ, TX 78401 | Oil & Gas Operator | Jun 2024 |
| 92 | T G T Petroleum Corporation | Wichita, KS 67275 | Oil & Gas Operator | Mar 2026 |
| 93 | Taylor-Brown Ope | | Oil Operator | Sep 1988 |
| 94 | Te-Pe Oil & Gas | | Oil & Gas Operator | Mar 2026 |
| 95 | Tenneco Oil Comp | | Oil & Gas Operator | Aug 1995 |
| 96 | TGT Petroleum Co | | Oil & Gas Operator | Apr 1995 |
| 97 | Tomlinson Oil Co Inc | Great Bend, KS 67530 | Oil & Gas Operator | Mar 2026 |
| 98 | Uehlin LLC | Oberlin, KS 67749 | Oil Operator | Jul 2025 |
| 99 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
| 100 | Venture Production, Inc. | Mulvane, KS 67110 | Oil Operator | Jul 1998 |