WYOMING · WELLS · BIG HORN COUNTY · API 49-003-20807
Colony 21
ActiveVertical oil wellWOGCC status: Producing Oil Well
- Operator of record
- Merit Energy Company
- Permitted by
- Marathon Oil Company
- County
- Big Horn
- Field
- Garland
A vertical oil well in Big Horn County, Wyoming, operated by Merit Energy Company. WOGCC status: producing oil well.
Spudded February 24, 1988.
Completed in one field: Garland.
It has reported 705,444 bbl of oil, 172,314 Mcf of gas, and 52,687,682 bbl of water since April 1988; in the twelve months through August 2026, 6,533 bbl, 2,556 Mcf, and 1,202,039 bbl.
- 6,533
- bbl oil, 12 months through Aug 2026
- 2,556
- Mcf gas, same 12 months
- 1.2M
- bbl produced water, same 12 months
- 705,444
- bbl oil since Apr 1988 · 172,314 Mcf gas
- Status
- Approved · WOGCC: Drilling or Drilled Permit
- Approved
- Jan 8, 1988
- Operator
- Marathon Oil Company
- Proposed formation
- Madison
- Target depth
- 4,620 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 6,533 · prior 12 9,272(-30%)
Colony 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 |
|---|---|---|---|---|---|---|---|
| GarlandMadison | Active | — | Apr 12, 1988 | Apr 1988 to Aug 2026 | 705,444 | 172,314 | 52,687,682 |
Formation tops
Download CSV →10 tops as filed, by depth. A formation filed more than once is listed each time.
| Formation | Depth |
|---|---|
| DAKOTA | 1,483 ft |
| LAKOTA | 1,646 ft |
| MORRISON | 1,954 ft |
| SUNDANCE | 2,136 ft |
| GYPSUM SPRINGS | 2,504 ft |
| CHUGWATER | 2,620 ft |
| DINWOODY | 3,143 ft |
| EMBAR | 3,170 ft |
| TENSLEEP | 3,262 ft |
| MADISON | 3,600 ft |
Source: Wyoming Oil and Gas Conservation Commission, "Geological Markers Based On Form 3"
Formation tops nearby
Well record
- API number
- 49-003-20807
- Location
- NW SE 33-56N-97W · 1124 FSL, 658 FEL
- Coordinates
- 44.78668, -108.53330 ↗
- Elevation
- 4,000 ft
- Elevation KB
- 4,020 ft
- Total depth
- 4,620 ft
- Basin, as WOGCC files it
- Bighorn Basin
- APD
- Approved Jan 8, 1988
- Proposed formation
- Madison
- Target depth
- 4,620 ft
- Spudded
- Feb 24, 1988
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/4900320807, documented in the API reference.