WYOMING · WELLS · BIG HORN COUNTY · API 49-003-20961
Manderson Unit 12-20L
ActiveVertical oil wellWOGCC status: Producing Oil Well
- Operator of record
- Natural Gas Processing Company
- Permitted by
- KCS Mountain Resources Inc
- County
- Big Horn
- Field
- Manderson
A vertical oil well in Big Horn County, Wyoming, operated by Natural Gas Processing Company. WOGCC status: producing oil well.
Spudded March 8, 1997.
Completed in one field: Manderson.
It has reported 53,779 bbl of oil, 64,697 Mcf of gas, and 62,184 bbl of water since April 1997; its last reported production was June 2025.
- 0
- bbl oil, 12 months through Aug 2026
- 0
- Mcf gas, same 12 months
- 0
- bbl produced water, same 12 months
- 53,779
- bbl oil since Apr 1997 · 64,697 Mcf gas
- Status
- Approved · WOGCC: Drilling or Drilled Permit
- Approved
- Sep 18, 1996
- Operator
- KCS Mountain Resources Inc
- Proposed formation
- Octh Louie
- Target depth
- 5,410 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 0 · prior 12 271(-100%)
Manderson Unit 12-20L: Oil by month.
Completions
ONE PER RESERVOIR THE WELL IS COMPLETED IN
| Field | Status | Perforations, ft | Completed | Produced | Oil, bbl | Gas, Mcf | Water, bbl |
|---|---|---|---|---|---|---|---|
| MandersonOcth Louie | — | — | Apr 6, 1997 | Apr 1997 to Jun 2025 | 53,779 | 64,697 | 62,184 |
Formation tops
Download CSV →6 tops as filed, by depth. A formation filed more than once is listed each time.
| Formation | Depth |
|---|---|
| FRONTIER A | 4,188 ft |
| FRONTIER-2 | 4,354 ft |
| FRONTIER-3 | 4,621 ft |
| MOWRY | 4,734 ft |
| OCTH LOUIE | 4,862 ft |
| MUDDY | 5,276 ft |
Source: Wyoming Oil and Gas Conservation Commission, "Geological Markers Based On Form 3"
Formation tops nearby
Operators of record
| Operator | From | To |
|---|---|---|
| Natural Gas Processing Company | Jan 1, 2016 | today |
| Saga Petroleum LLC | Nov 1, 2006 | Jan 1, 2016 |
| KCS Mountain Resources Inc | Jan 1, 2000 | Nov 1, 2006 |
Well record
- API number
- 49-003-20961
- Location
- SW NW 20-50N-92W · 2056 FNL, 698 FWL
- Coordinates
- 44.29113, -107.94545 ↗
- Elevation
- 4,053 ft
- Total depth
- 5,410 ft
- Land
- Federal
- Basin, as WOGCC files it
- Bighorn Basin
- APD
- Approved Sep 18, 1996
- Proposed formation
- Octh Louie
- Target depth
- 5,410 ft
- Spudded
- Mar 8, 1997
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/4900320961, documented in the API reference.