WYOMING · WELLS · LARAMIE COUNTY · API 49-021-29663
Gullwing 278-4H
ActiveHorizontal oil wellWOGCC status: Well Spudded
- Operator of record
- Bison IV Operating LLC
- County
- Laramie
- Field
- Silo
A horizontal oil well in Laramie County, Wyoming, operated by Bison IV Operating LLC. WOGCC status: well spudded.
Spudded April 15, 2026 and drilled to 25,039 ft measured depth.
Completed in one field: Silo.
It has reported 18,667 bbl of oil, 13,222 Mcf of gas, and 65,903 bbl of water since June 2026; in the twelve months through August 2026, 14,903 bbl, 10,304 Mcf, and 56,309 bbl.
- 14,903
- bbl oil, 12 months through Aug 2026
- 10,304
- Mcf gas, same 12 months
- 56,309
- bbl produced water, same 12 months
- 18,667
- bbl oil since Jun 2026 · 13,222 Mcf gas
- Status
- Approved · WOGCC: Drilling or Drilled Permit
- Received
- Feb 10, 2026
- Approved
- Mar 18, 2026
- Operator
- Bison IV Operating LLC
- Wellbore
- Horizontal
- Proposed formation
- Codell Sand
- Target depth
- 8,223 ft
- Proposed bottom hole
- 41.28180, -104.50222 ↗
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Reported production
Every month on file for this well on form 2, summed across its fields and the operators that filed it. The newest months can still be amended.
12 months through Aug 2026 14,903
Gullwing 278-4H: Oil by month.
Completions
ONE PER RESERVOIR THE WELL IS COMPLETED IN
| Field | Status | Perforations, ft | Completed | Produced | Oil, bbl | Gas, Mcf | Water, bbl |
|---|---|---|---|---|---|---|---|
| SiloCodell Sand | Active | — | — | Jun 2026 to Sep 2026 | 18,667 | 13,222 | 65,903 |
Formation tops nearby
Well record
- API number
- 49-021-29663
- Location
- NW NE 17-15N-64W · 837 FNL, 1927 FEL
- Coordinates
- 41.27221, -104.56649 ↗
- Elevation
- 5,835 ft
- Measured depth
- 25,039 ft
- Total depth
- 8,223 ft
- Basin, as WOGCC files it
- Denver-Cheyenne Basin
- APD
- Approved Mar 18, 2026
- Proposed formation
- Codell Sand
- Target depth
- 8,223 ft
- Spudded
- Apr 15, 2026
About this data
Wyoming Oil and Gas Conservation Commission (WOGCC), from its public database extracts. Status and type are in WOGCC's own words. Production and injection are what operators filed on form 2, by well and month; twelve-month figures end in Aug 2026, the last month whose filings are in. Locations are from the well's location plat and are approximate. The Commission's production file names each well's current operator on every month, so an operator's figures are those of the wells it operates today. Nothing is estimated.
Developers: this page as JSON is GET /v1/data/wells/4902129663, documented in the API reference.