WYOMING · WELLS · FREMONT COUNTY · API 49-013-21543
Dunne 35
ActiveVertical oil wellWOGCC status: Producing Oil Well
- Operator of record
- Valkyrie Operating LLC
- Permitted by
- Mercury Exploration Company
- County
- Fremont
- Field
- Derby
A vertical oil well in Fremont County, Wyoming, operated by Valkyrie Operating LLC. WOGCC status: producing oil well.
Spudded July 11, 1988.
Completed in one field: Derby.
It has reported 175,571 bbl of oil, 0 Mcf of gas, and 40,420,786 bbl of water since August 1988; in the twelve months through August 2026, 21 bbl, 0 Mcf, and 12,167 bbl.
- 21
- bbl oil, 12 months through Aug 2026
- 0
- Mcf gas, same 12 months
- 12,167
- bbl produced water, same 12 months
- 175,571
- bbl oil since Aug 1988 · 0 Mcf gas
- Status
- Approved · WOGCC: Drilling or Drilled Permit
- Approved
- Feb 23, 1988
- Operator
- Mercury Exploration Company
- Proposed formation
- Tensleep
- Target depth
- 1,264 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 21 · prior 12 417(-95%)
Dunne 35: Oil by month.
Completions
ONE PER RESERVOIR THE WELL IS COMPLETED IN
| Field | Status | Perforations, ft | Completed | Produced | Oil, bbl | Gas, Mcf | Water, bbl |
|---|---|---|---|---|---|---|---|
| DerbyTensleep | Active | — | Aug 11, 1988 | Aug 1988 to Oct 2025 | 175,571 | 0 | 40,420,786 |
Formation tops
Download CSV →4 tops as filed, by depth. A formation filed more than once is listed each time.
| Formation | Depth |
|---|---|
| DINWOODY | 844 ft |
| PHOSPHORISIA | 887 ft |
| TENSLEEP | 1,212 ft |
| TENSLEEP POROSITY | 1,238 ft |
Source: Wyoming Oil and Gas Conservation Commission, "Geological Markers Based On Form 3"
Formation tops nearby
Operators of record
| Operator | From | To |
|---|---|---|
| Citation Oil & Gas Corporation | Jan 1, 2006 | today |
| Meritage Energy Partners LLC | Oct 1, 2004 | Jan 1, 2006 |
| Quicksilver Resources Inc | Jan 1, 2000 | Oct 1, 2004 |
Well record
- API number
- 49-013-21543
- Location
- SW SE 4-31N-98W · 594 FSL, 2371 FEL
- Coordinates
- 42.68521, -108.55101 ↗
- Elevation
- 5,957 ft GR
- Total depth
- 1,264 ft
- Land
- Federal
- Basin, as WOGCC files it
- Wind River Basin
- APD
- Approved Feb 23, 1988
- Proposed formation
- Tensleep
- Target depth
- 1,264 ft
- Spudded
- Jul 11, 1988
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/4901321543, documented in the API reference.