| 4 | 1 | 01-07-1952 | 32300 | GREASEWOOD | DSND | Greasewood Sandstone 40 acre; center; 50 foot tolerance. |
| 4 | 2 | 05-11-1962 | 32300 | GREASEWOOD | DSND | "D" Sand: Approves Unit Agreement and water injection project; redefines field. |
| 407 | 583 | 04-16-2012 | | | NBRR | Approves the request for an order to establish nine approximate 640-acre drilling and spacing units consisting of Sections 5, 6, 9, 15, 16, 22, and 32 through 34, Township 6 North, Range 61 West, 6th P.M., and one approximate 1280-acre drilling and spacing unit consisting of Sections 12 and 13, Township 6 North Range 61 West, 6th P.M., and authorize drilling up to four horizontal wells within each unit, for the production of oil, gas and associated hydrocarbons from the Niobrara Formation. |
| 407 | 1693 | 04-18-2016 | | | NB-CD | Approves Caerus WashCo, LLC’s request for an order to among other things: Amend Order No. 407-583 to include the Codell Formation; and 2) Approve up to twenty-eight horizontal wells within the unit, with twenty-four horizontal wells to be drilled to the Niobrara Formation and four horizontal wells to be drilled to the Codell Formation. |
| 407 | 3152 | 10-13-2020 | | | NFCC | Among other things: establish an approximate 2,560-acre drilling and spacing unit, and approve up to 20 horizontal wells within the unit, for production from the Niobrara, Fort Hays, Codell and Carlile Formations. |