WYOMING · WELLS · PARK COUNTY · API 49-029-20797
McWilliams 8-58
ActiveVertical oil wellWOGCC status: Producing Oil Well
- Operator of record
- Bareto Energy LLC
- Permitted by
- Marathon Oil Company
- County
- Park
- Field
- Cody
A vertical oil well in Park County, Wyoming, operated by Bareto Energy LLC. WOGCC status: producing oil well.
Spudded October 3, 1978.
Completed in 2 fields: Cody, Cody.
It has reported 712,982 bbl of oil, 26,877 Mcf of gas, and 1,039,836 bbl of water since January 1979; in the twelve months through August 2026, 2,894 bbl, 0 Mcf, and 26,207 bbl.
- 2,894
- bbl oil, 12 months through Aug 2026
- 0
- Mcf gas, same 12 months
- 26,207
- bbl produced water, same 12 months
- 712,982
- bbl oil since Jan 1979 · 26,877 Mcf gas
- Status
- Approved · WOGCC: Drilling or Drilled Permit
- Approved
- Oct 3, 1978
- Operator
- Marathon Oil Company
- Proposed formation
- Phosphoria
- Target depth
- 7,900 ft
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 2,894 · prior 12 3,240(-11%)
McWilliams 8-58: Oil by month.
Completions
ONE PER RESERVOIR THE WELL IS COMPLETED IN
Formation tops
Download CSV →10 tops as filed, by depth. A formation filed more than once is listed each time.
| Formation | Depth |
|---|---|
| FRONTIER | 4,108 ft |
| MOWRY | 4,678 ft |
| MUDDY | 5,320 ft |
| MORRISON | 5,695 ft |
| CHUGWATER | 6,633 ft |
| CURTIS | 6,670 ft |
| DINWOODY | 7,350 ft |
| PHOSPHORIA | 7,420 ft |
| TENSLEEP | 7,576 ft |
| AMSDEN | 7,746 ft |
Source: Wyoming Oil and Gas Conservation Commission, "Geological Markers Based On Form 3"
Formation tops nearby
Operators of record
| Operator | From | To |
|---|---|---|
| Bareto Energy LLC | Jun 1, 2025 | today |
| Vaquero Big Horn LLC | Jan 1, 2000 | Jun 1, 2025 |
Well record
- API number
- 49-029-20797
- Location
- SE NW 3-52N-101W · 1000 FNL, 2310 FWL
- Coordinates
- 44.51374, -108.98794 ↗
- Elevation
- 5,024 ft
- Total depth
- 7,900 ft
- Land
- Private
- Basin, as WOGCC files it
- Bighorn Basin
- APD
- Approved Oct 3, 1978
- Proposed formation
- Phosphoria
- Target depth
- 7,900 ft
- Spudded
- Oct 3, 1978
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/4902920797, documented in the API reference.