WYOMING · WELLS · BIG HORN COUNTY · API 49-003-20331
Alkali Anti W-1390A 14
ActiveVertical oil wellWOGCC status: Producing Oil Well
- Operator of record
- Rim Operating Inc
- Permitted by
- Costilla Energy Inc
- County
- Big Horn
- Field
- Alkali Anticline
A vertical oil well in Big Horn County, Wyoming, operated by Rim Operating Inc. WOGCC status: producing oil well.
Spudded May 2, 1975.
Completed in 2 fields: Alkali Anticline, Alkali Anticline.
It has reported 461,914 bbl of oil, 8,651 Mcf of gas, and 3,103,871 bbl of water since the record begins in January 1978; in the twelve months through August 2026, 2,839 bbl, 0 Mcf, and 43,559 bbl.
- 2,839
- bbl oil, 12 months through Aug 2026
- 0
- Mcf gas, same 12 months
- 43,559
- bbl produced water, same 12 months
- 461,914
- bbl oil since Jan 1978 · 8,651 Mcf gas
- Status
- Approved · WOGCC: Drilling or Drilled Permit
- Approved
- Mar 25, 1975
- Operator
- Costilla Energy Inc
- Proposed formation
- Phosphoria
- Target depth
- 6,213 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 2,839 · prior 12 3,503(-19%)
Alkali Anti W-1390A 14: Oil by month.
Completions
ONE PER RESERVOIR THE WELL IS COMPLETED IN
| Field | Status | Perforations, ft | Completed | Produced | Oil, bbl | Gas, Mcf | Water, bbl |
|---|---|---|---|---|---|---|---|
| Alkali AnticlinePhosphoria-Tensleep | Active | — | — | by Jan 1978 to Sep 2026 | 461,914 | 8,651 | 3,103,871 |
| Alkali AnticlinePhosphoria | — | — | Jun 25, 1975 | — | — | — | — |
Formation tops
Download CSV →8 tops as filed, by depth. A formation filed more than once is listed each time.
| Formation | Depth |
|---|---|
| FRONTIER | 2,432 ft |
| PEAY | 3,044 ft |
| MUDDY | 3,800 ft |
| MORRISON | 4,226 ft |
| DINWOODY | 5,690 ft |
| PHOSPHORIA | 5,720 ft |
| TENSLEEP | 5,883 ft |
| DARWIN | 6,181 ft |
Source: Wyoming Oil and Gas Conservation Commission, "Geological Markers Based On Form 3"
Formation tops nearby
Operators of record
| Operator | From | To |
|---|---|---|
| Rim Operating Inc | Oct 1, 2013 | today |
| Prima Exploration Inc | Jan 1, 2000 | Oct 1, 2013 |
Well record
- API number
- 49-003-20331
- Location
- SE NW 29-55N-95W · 2130 FNL, 810 FWL
- Coordinates
- 44.71761, -108.32640 ↗
- Elevation
- 4,594 ft GR
- Elevation KB
- 4,606 ft
- Total depth
- 6,213 ft
- Land
- Federal
- Basin, as WOGCC files it
- Bighorn Basin
- APD
- Approved Mar 25, 1975
- Proposed formation
- Phosphoria
- Target depth
- 6,213 ft
- Spudded
- May 2, 1975
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/4900320331, documented in the API reference.