WYOMING · WELLS · JOHNSON COUNTY · API 49-019-20750
Mildred Carr 40-34
ActiveVertical oil wellWOGCC status: Producing Oil Well
- Operator of record
- Valkyrie Operating LLC
- Permitted by
- Wellstar Corporation
- County
- Johnson
- Field
- Fourmile
A vertical oil well in Johnson County, Wyoming, operated by Valkyrie Operating LLC. WOGCC status: producing oil well.
Spudded January 29, 1984.
Completed in one field: Fourmile.
It has reported 409,158 bbl of oil, 24,395 Mcf of gas, and 388,533 bbl of water since June 1984; in the twelve months through August 2026, 1,530 bbl, 0 Mcf, and 2,290 bbl.
- 1,530
- bbl oil, 12 months through Aug 2026
- 0
- Mcf gas, same 12 months
- 2,290
- bbl produced water, same 12 months
- 409,158
- bbl oil since Jun 1984 · 24,395 Mcf gas
- Status
- Approved · WOGCC: Drilling or Drilled Permit
- Approved
- Jan 29, 1984
- Operator
- Wellstar Corporation
- Proposed formation
- Minnelusa
- Target depth
- 15,500 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 1,530 · prior 12 5,541(-72%)
Mildred Carr 40-34: Oil by month.
Completions
ONE PER RESERVOIR THE WELL IS COMPLETED IN
| Field | Status | Perforations, ft | Completed | Produced | Oil, bbl | Gas, Mcf | Water, bbl |
|---|---|---|---|---|---|---|---|
| FourmileMinnelusa | Active | — | Dec 29, 1984 | Jun 1984 to Sep 2026 | 409,158 | 24,395 | 388,533 |
Formation tops
Download CSV →25 tops as filed, by depth. A formation filed more than once is listed each time.
| Formation | Depth |
|---|---|
| FOX HILLS,FM | 7,870 ft |
| LEWIS,SH | 8,008 ft |
| TEAPOT,MBR (PARKMAN SS) | 8,678 ft |
| PARKMAN,SS | 8,939 ft |
| SUSSEX,SS | 9,784 ft |
| SHANNON,SS MBR (CODY SH) | 10,287 ft |
| NIOBRARA,FM | 11,593 ft |
| CARLILE,MBR (CODY SH) | 12,080 ft |
| FRONTIER,FM | 12,407 ft |
| MOWRY,MBR (SH) | 13,045 ft |
| MUDDY,FM | 13,340 ft |
| THERMOPOLIS,SH | 13,373 ft |
| DAKOTA,FM | 13,468 ft |
| LAKOTA,FM (INYAN KARA GP) | 13,548 ft |
| MORRISON,FM | 13,660 ft |
| SUNDANCE,FM | 13,816 ft |
| CHUGWATER,FM | 14,050 ft |
| CROW MOUNTAIN,SS(CHUGWATER GP) | 14,110 ft |
| ALCOVA LS (CHUGWATER GP) | 14,152 ft |
| RED PEAK,FM (CHUGWATER GP) | 14,170 ft |
| DINWOODY,FM | 14,800 ft |
| PHOSPHORIA,FM | 14,860 ft |
| FORELLE,LS | 15,032 ft |
| GLENDO,SH MBR (GOOSE EGG FM) | 15,047 ft |
| MINNELUSA,FM | 15,050 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 | Apr 14, 2004 | Jan 1, 2006 |
| Merit Energy Company | May 12, 2001 | Apr 14, 2004 |
| Falcon Creek Resources Inc | Jan 1, 2000 | May 12, 2001 |
Well record
- API number
- 49-019-20750
- Location
- NE SE 34-45N-80W · 1980 FSL, 1320 FEL
- Coordinates
- 43.82372, -106.45554 ↗
- Elevation KB
- 4,768 ft
- Total depth
- 15,500 ft
- Land
- Private
- Basin, as WOGCC files it
- Powder River Basin
- APD
- Approved Jan 29, 1984
- Proposed formation
- Minnelusa
- Target depth
- 15,500 ft
- Spudded
- Jan 29, 1984
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/4901920750, documented in the API reference.