| 393 | 1 | 12-20-1982 | 10775 | CHALICE | JSND | Establishes 160 acre units for gas and associated hydrocarbons from "J" Sand lands in Arapahoe County. Permitted well no closer than 600 feet from Unit boundaries and no closer than 2400 feet from another well. Existing wells and locations permitted wells. |
| 535 | 397 | 09-16-2013 | 85251 | UNNAMED | NBRR | Approves the request for an order to establish five approximate 640-acre drilling and spacing units consisting of Sections 20, 26, 27, 28 and 33, Township 4 South, Range 64 West, 6th P.M., and approve up to two horizontal wells within each unit, for the production of oil, gas and associated hydrocarbons from the Niobrara Formation. See Order 535-313 for additional spacing among other things of lands from application. |
| 535 | 403 | 09-16-2013 | 85251 | UNNAMED | NBRR | Denied the request for an order to pool all interests within two approximate 640-acre exploratory drilling and spacing units established for Sections 20 and 28, Township 4 South, Range 64 West, 6th P.M., for the development and operation of the Niobrara Formation. |
| 535 | 661 | 04-13-2015 | 85251 | UNNAMED | NBRR | Among other things: approves an approximate 1280-acre drilling and spacing unit, and up to two horizontal wells within the unit, for the production of oil, gas and associated hydrocarbons from the Niobrara Formation. |
| 535 | 802 | 06-12-2017 | 85251 | UNNAMED | NBRR | Approves Bison Oil & Gas, LLC’s request for an order to among other things: Approve an additional 14 horizontal wells for a total of 16 horizontal wells within an approximate 1,280-acre drilling and spacing unit established for the Application Lands by Order No. 535-661, for the production of oil, gas and associated hydrocarbons from the Niobrara Formation. |