Top 30 Oil and Gas Producers in Kansas
According to Kansas Department of Revenue (DOR) records 34,273,223 bbls of oil and 494,246,812 MCF of gas were produced in Kansas during the States fiscal year 2001. FY01 runs from July 1, 2000 through June 30, 2001. A total of 2272 operators reported oil production and 1025 operators reported gas production during this period. The following tables list the top 30 oil and gas producers in the State. Please note that DOR records may not reflect changes in ownership.
| Rank | Oil Producers | Barrels |
| 1 | Berexco, Inc. | 1,850,803 |
| 2 | OXY USA, Inc. | 1,468,092 |
| 3 | Vess Oil Corp. | 1,396,660 |
| 4 | Murfin Drilling Co. | 902,265 |
| 5 | PetroSantander, Inc. | 897,210 |
| 6 | Anadarko Petroleum | 774,846 |
| 7 | Helmerich & Payne, Inc. | 565,478 |
| 8 | American Warrior, Inc. | 543,176 |
| 9 | McCoy Petroleum Corp. | 515,739 |
| 10 | Abercrombie Energy | 439,424 |
| 11 | Ritchie Exploration | 434,250 |
| 12 | Chesapeake Energy | 394,540 |
| 13 | Pickrell Drilling Co. | 350,190 |
| 14 | White Eagle Resource | 301,286 |
| 15 | Petroleum Property Servs. | 277,631 |
| 16 | BP America | 269,408 |
| 17 | Farmer, John O., Inc. | 234,035 |
| 18 | Range Oil Co., Inc. | 223,422 |
| 19 | Citation Oil & Gas Co. | 201,462 |
| 20 | Beredco, Inc. | 196,547 |
| 21 | Hartman Oil Co., Inc. | 195,764 |
| 22 | RAMA Operating Co. | 188,009 |
| 23 | Equinox Oil Co. | 185,024 |
| 24 | Oil Producers, Inc. | 184,003 |
| 25 | Holl, F. G. Co. | 183,999 |
| 26 | Benchmark Oil & Gas | 183,708 |
| 27 | Loeb, Herman L | 174,939 |
| 28 | Gore Oil Co. | 174,359 |
| 29 | Hansen, Dane G Trust | 167,289 |
| 30 | Mull Drilling Co. | 166,885 |
| Rank | Gas Producers | (MCF) |
| 1 | BP - Amoco | 85,342,436 |
| 2 | Exxon-Mobil | 80,509,988 |
| 3 | Anadarko Petroleum | 64,409,711 |
| 4 | OXY USA, Inc. | 57,827,772 |
| 5 | Pioneer Natural Resources | 41,955,216 |
| 6 | Helmerich & Payne, Inc. | 16,543,301 |
| 7 | Plains Petroleum Co. | 12,676,284 |
| 8 | Chesapeake Energy | 8,210,443 |
| 9 | Kansas Natural Gas Co. | 5,941,061 |
| 10 | Osborn Heirs Co. | 5,117,825 |
| 11 | Texaco Exploration | 4,123,722 |
| 12 | Cross Timbers Operat | 4,118,467 |
| 13 | American Exploration | 2,995,549 |
| 14 | Woolsey Petroleum Co. | 2,992,289 |
| 15 | Berexco, Inc. | 2,809,050 |
| 16 | Horseshoe Operating | 2,642,893 |
| 17 | Oil Producers, Inc. | 2,457,453 |
| 18 | Ensign Operating Co. | 2,157,496 |
| 19 | Coastal Oil & Gas | 1,931,381 |
| 20 | Cabot Oil & Gas Corp. | 1,872,102 |
| 21 | McCoy Petroleum | 1,777,094 |
| 22 | Pennzoil Exploration | 1,751,726 |
| 23 | Samuel Gary Jr. & Assoc. | 1,645,371 |
| 24 | Energy Development | 1,492,741 |
| 25 | Pickrell Drilling Co. | 1,392,158 |
| 26 | American Warrior, Inc. | 1,142,855 |
| 27 | Thoroughbred Assoc. | 1,140,040 |
| 28 | Dorchester Hugoton | 1,124,488 |
| 29 | Huber J.M. Corp. | 1,115,702 |
| 30 | Louis Dreyfus Natural Gas | 1,110,333 |