WYOMING · WELLS · BIG HORN COUNTY · API 49-003-20306
Alkali Anti W-1390A 12A
Shut inVertical oil wellWOGCC status: Shut-In
- 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: shut-in.
Spudded July 9, 1974.
Completed in 3 fields: Alkali Anticline, Alkali Anticline, Alkali Anticline.
It has reported 171,599 bbl of oil, 14,071 Mcf of gas, and 109,506 bbl of water since the record begins in January 1978; in the twelve months through August 2026, 719 bbl, 0 Mcf, and 1,323 bbl.
- 719
- bbl oil, 12 months through Aug 2026
- 0
- Mcf gas, same 12 months
- 1,323
- bbl produced water, same 12 months
- 171,599
- bbl oil since Jan 1978 · 14,071 Mcf gas
- Status
- Approved · WOGCC: Drilling or Drilled Permit
- Approved
- Jun 19, 1974
- Operator
- Costilla Energy Inc
- Proposed formation
- Phosp/Tens
- Target depth
- 5,710 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 719 · prior 12 3
Alkali Anti W-1390A 12A: 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 | 171,599 | 14,071 | 109,506 |
| Alkali AnticlineDarwin | — | — | Dec 10, 1974 | — | — | — | — |
| Alkali AnticlineMadison | — | — | Jul 19, 1974 | — | — | — | — |
Formation tops
Download CSV →9 tops as filed, by depth. A formation filed more than once is listed each time.
| Formation | Depth |
|---|---|
| FRONTIER | 651 ft |
| PEAY | 1,852 ft |
| MUDDY | 3,246 ft |
| MORRISON | 3,770 ft |
| DINWOODY | 5,216 ft |
| PHOSPHORIA | 5,246 ft |
| TENSLEEP | 5,434 ft |
| DARWIN | 5,655 ft |
| MADISON | 5,700 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
- 49-003-20306
- Location
- SE SE 29-55N-95W · 200 FSL, 400 FEL
- Coordinates
- 44.70928, -108.31060 ↗
- Elevation
- 4,552 ft GR
- Total depth
- 5,710 ft
- Land
- Federal
- Basin, as WOGCC files it
- Bighorn Basin
- APD
- Approved Jun 19, 1974
- Proposed formation
- Phosp/Tens
- Target depth
- 5,710 ft
- Spudded
- Jul 9, 1974
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/4900320306, documented in the API reference.