WYOMING · WELLS · WESTON COUNTY · API 49-045-21729
Black Thunder Unit 31-21
ActiveVertical oil wellWOGCC status: Producing Oil Well
- Operator of record
- True Oil LLC
- County
- Weston
- Field
- Black Thunder
A vertical oil well in Weston County, Wyoming, operated by True Oil LLC. WOGCC status: producing oil well.
Spudded August 13, 1981.
Completed in one field: Black Thunder.
It has reported 84,348 bbl of oil, 21,511 Mcf of gas, and 540 bbl of water since September 1981; in the twelve months through August 2026, 1,384 bbl, 160 Mcf, and 59 bbl.
- 1,384
- bbl oil, 12 months through Aug 2026
- 160
- Mcf gas, same 12 months
- 59
- bbl produced water, same 12 months
- 84,348
- bbl oil since Sep 1981 · 21,511 Mcf gas
- Status
- Approved · WOGCC: Drilling or Drilled Permit
- Approved
- Aug 13, 1981
- Operator
- True Oil LLC
- Proposed formation
- Muddy
- Target depth
- 7,155 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 1,384 · prior 12 1,525(-9%)
Black Thunder Unit 31-21: Oil by month.
Completions
ONE PER RESERVOIR THE WELL IS COMPLETED IN
| Field | Status | Perforations, ft | Completed | Produced | Oil, bbl | Gas, Mcf | Water, bbl |
|---|---|---|---|---|---|---|---|
| Black ThunderMuddy | Active | — | Sep 14, 1981 | Sep 1981 to Sep 2026 | 84,348 | 21,511 | 540 |
Formation tops
Download CSV →9 tops as filed, by depth. A formation filed more than once is listed each time.
| Formation | Depth |
|---|---|
| FOX HILLS,FM | 2,057 ft |
| PIERRE,SH | 2,463 ft |
| EAGLE | 3,800 ft |
| NIOBRARA,FM | 5,250 ft |
| TURNER,SANDY MBR (CARLILE SH) | 5,986 ft |
| GREENHORN,FM (SILT) | 6,176 ft |
| MOWRY,MBR (SH) | 6,878 ft |
| NEWCASTLE,SS | 7,063 ft |
| SKULL CREEK,SH | 7,105 ft |
Source: Wyoming Oil and Gas Conservation Commission, "Geological Markers Based On Form 3"
Formation tops nearby
Well record
- API number
- 49-045-21729
- Location
- NW NE 21-42N-66W · 668 FNL, 1979 FEL
- Coordinates
- 43.60841, -104.78685 ↗
- Elevation
- 4,133 ft GR
- Total depth
- 7,155 ft
- Land
- Private
- Basin, as WOGCC files it
- Powder River Basin
- APD
- Approved Aug 13, 1981
- Proposed formation
- Muddy
- Target depth
- 7,155 ft
- Spudded
- Aug 13, 1981
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/4904521729, documented in the API reference.