| 1 | Abraxas Petroleu | | Oil Operator | May 1986 |
| 2 | Abraxas Production Corporation | San Antonio, TX 78270 | Oil & Gas Operator | Sep 1999 |
| 3 | Advantage Resources Inc | Broomfield, CO 80020 | Oil & Gas Operator | Jun 2025 |
| 4 | Allied Oil Compa | | Oil & Gas Operator | Feb 1995 |
| 5 | Allied Oil Company, Inc. | Taneyville, MO 65759 | Oil Operator | Apr 1996 |
| 6 | Arcadian Resources LLC | Glen Elder, KS 67446 | Oil & Gas Operator | Oct 2025 |
| 7 | B & G Oil Compan | | Oil Operator | Aug 1994 |
| 8 | Bach Oil Production | | Oil Operator | Jun 2025 |
| 9 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Oct 2025 |
| 10 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 11 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Oct 2025 |
| 12 | Black Oak Exploration, LLC | Denver, CO 80210 | Oil & Gas Operator | Jun 2025 |
| 13 | Blueridge Petroleum Corporation | Edmond, OK 73003 | Oil & Gas Operator | Jun 2025 |
| 14 | BP Exploration I | | Oil & Gas Operator | Oct 1994 |
| 15 | Burch Exploratio | | Oil Operator | Mar 1991 |
| 16 | Cahoj, H. Drilling | McDonald, KS 67745 | Oil Operator | Jan 2000 |
| 17 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jun 2025 |
| 18 | Castle Resources, Inc. | Russell, KS 67665 | Oil & Gas Operator | Jun 2025 |
| 19 | Chief Drilling C | | Oil & Gas Operator | Feb 1995 |
| 20 | Chizum Oil LLC | Wichita, KS 67211 | Oil & Gas Operator | Jun 2025 |
| 21 | Cla-Mar Oil Company, LLC | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 22 | Clark B & Cahoj | | Oil Operator | Apr 1995 |
| 23 | Coachman Energy Operating Company LLC | Englewood, CO 80111 | Oil & Gas Operator | May 2024 |
| 24 | Coastal Oil & Ga | | Oil & Gas Operator | Oct 1996 |
| 25 | Culbreath Oil & Gas Company, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 2025 |
| 26 | Damar Resources, Inc. | Hays, KS 67601 | Oil & Gas Operator | Apr 2025 |
| 27 | Daystar Petroleum, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Jun 2025 |
| 28 | Deutsch Oil Company | | Oil & Gas Operator | Jun 2025 |
| 29 | Don Karst Well Service, Inc. | Russell, KS 67665 | Oil Operator | May 2025 |
| 30 | Double R Oil Co. | Charlotte, TX 78011 | Oil & Gas Operator | May 2010 |
| 31 | Downing-Nelson Oil Co Inc | Hays, KS 67601 | Oil & Gas Operator | Jun 2025 |
| 32 | Farmer, John O., Inc. | Russell, KS 67665 | Oil & Gas Operator | Jun 2025 |
| 33 | Frontier Oil Com | | Oil & Gas Operator | May 1995 |
| 34 | Frontier Oil Company | | Oil Operator | Oct 1999 |
| 35 | Gee, Fred E. | Topeka, KS 66614 | Oil Operator | May 1998 |
| 36 | Gemini Corporati | | Oil Operator | Mar 1986 |
| 37 | Geodessa Corpora | | Oil Operator | Jul 1984 |
| 38 | Gore Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 39 | Grand Mesa Operating Co | Wichita, KS 67206 | Oil & Gas Operator | Aug 2025 |
| 40 | H & H Production | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2015 |
| 41 | H & R Exploratio | | Oil Operator | Feb 1992 |
| 42 | HG Oil Holdings, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Jun 2025 |
| 43 | Hrbek, R.L. | Merino, CO 80741 | Oil & Gas Operator | Jan 2024 |
| 44 | Ia Operating, Inc. | Edmond, OK 73003 | Oil Operator | Jun 2025 |
| 45 | Innes Petroleum | | Oil Operator | Nov 1994 |
| 46 | John O. Farmer, Inc. | | Oil & Gas Operator | Dec 1996 |
| 47 | Kansas Crude Investments LLC | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 48 | Kern Co. | Houston, TX 77095 | Oil & Gas Operator | Jan 2021 |
| 49 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jun 2025 |
| 50 | LRR Partnership | | Oil Operator | Sep 2023 |
| 51 | Mad Operators LLC | | Oil & Gas Operator | Jun 2025 |
| 52 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Jun 2025 |
| 53 | Meridian Energy Inc. | | Oil Operator | Jun 2025 |
| 54 | Mike Kelso Oil, Inc. | Chase, KS 67524 | Oil & Gas Operator | Jun 2025 |
| 55 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | Aug 2025 |
| 56 | Murfin Drilling | | Oil & Gas Operator | Jul 1997 |
| 57 | Murfin Drilling Company Inc | Wichita, KS 67202 | Oil & Gas Operator | Aug 2025 |
| 58 | Nielson Enterpri | | Oil & Gas Operator | Sep 1987 |
| 59 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Jun 2025 |
| 60 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 61 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | Jun 2025 |
| 62 | Philpott Oil & Gas Co Inc | Atwood, KS 67730 | Oil Operator | Aug 2010 |
| 63 | Pickrell Drilling Co., Inc. | Wichita, KS 67213 | Oil & Gas Operator | Jun 2025 |
| 64 | Prospect Oil & Gas Corp | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 65 | Providence Energ | | Oil & Gas Operator | Jul 1988 |
| 66 | Raymond Oil Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | Jun 2025 |
| 67 | Raymond Oil Comp | | Oil & Gas Operator | Dec 1996 |
| 68 | Ritchie Explorat | | Oil & Gas Operator | Dec 1996 |
| 69 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jun 2025 |
| 70 | Robuck Petroleum, LLC | Nacogdoches, TX 75965 | Oil & Gas Operator | Oct 2025 |
| 71 | Ruda Exploration Inc | Atwood, KS 67730 | Oil Operator | Jun 2025 |
| 72 | Schulein Robert | | Oil & Gas Operator | Dec 1995 |
| 73 | Simminger, Robert John Jr | | Oil Operator | May 2025 |
| 74 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2025 |
| 75 | Slawson, Donald C. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2025 |
| 76 | Snow Oil Company | Nocona, TX 76255 | Oil Operator | Oct 2025 |
| 77 | Standard Operating Company | Wichita, KS 67205 | Oil & Gas Operator | Jun 2025 |
| 78 | Stoeppelwerth DR | | Oil Operator | May 1993 |
| 79 | Sutton Investmen | | Oil Operator | Mar 1987 |
| 80 | Talon Group LLC | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 81 | Taos Resources Operating Co LLC | Houston, TX 77037 | Oil & Gas Operator | Dec 2019 |
| 82 | Thomas Garner, Inc. | St John, KS 67576 | Oil & Gas Operator | Jun 2025 |
| 83 | Thoroughbred Associates L.L.C. | Wichita, KS 67226 | Oil & Gas Operator | Jun 2025 |
| 84 | Thresher Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Oct 2025 |
| 85 | Thunderbird Dril | | Oil & Gas Operator | Nov 1995 |
| 86 | Thunderbird Drilling, Inc. | Wichita, KS 67207 | Oil Operator | Oct 2008 |
| 87 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2023 |
| 88 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Oct 2025 |
| 89 | Venture Resources, Inc. | Denver, CO 80250 | Oil Operator | Jun 2025 |
| 90 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 91 | Viking Resources | | Oil & Gas Operator | Sep 1995 |
| 92 | Viking Resources, Inc. | Stafford, TX 77477 | Oil & Gas Operator | Oct 2025 |
| 93 | West Kansas Oil | | Oil Operator | Jul 1992 |
| 94 | White & Ellis DR | | Oil & Gas Operator | Aug 1995 |