| 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 | 738 | 08-29-2016 | 85251 | UNNAMED | NBRR | Approves Bison Oil & Gas, LLC’s request for an order to among other things: Establish one approximate 960-acre drilling and spacing unit for the Application Lands, and approve up to three horizontal wells within the unit, for the production of oil, gas and associated hydrocarbons from the Niobrara Formation. |
| 535 | 756 | 12-12-2016 | 85251 | UNNAMED | NBRR | Approves Bison Oil & Gas, LLC’s request for an order to among other things: Pool all interests in an approximate 960-acre drilling and spacing unit established for the development and operation of the Niobrara Formation.
Application lands: Township 4 South, Range 64 West, 6th P.M. Section 15: W½ Section 16: All
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| 535 | 791 | 06-12-2017 | 85251 | UNNAMED | NBRR | Approves Bison Oil & Gas, LLC’s request for an order to among other things: Amend Order No. 535-738 to approve up to 12 horizontal wells within an established 960-acre drilling and spacing unit comprised of the Application Lands for the production of oil, gas and associated hydrocarbons from the Niobrara Formation. |