WYOMING · WELLS · BIG HORN COUNTY · API 49-003-20563
Cozzens 7
ActiveVertical oil wellWOGCC status: Producing Oil Well
- Operator of record
- Merit Energy Company
- Permitted by
- Marathon Oil Company
- County
- Big Horn
- Field
- Byron
A vertical oil well in Big Horn County, Wyoming, operated by Merit Energy Company. WOGCC status: producing oil well.
Spudded January 19, 1981.
Completed in 4 fields: Byron, Byron, Byron, Byron.
It has reported 972,704 bbl of oil, 13,053 Mcf of gas, and 45,040,506 bbl of water since April 1981; in the twelve months through August 2026, 11,551 bbl, 504 Mcf, and 2,402,083 bbl.
- 11,551
- bbl oil, 12 months through Aug 2026
- 504
- Mcf gas, same 12 months
- 2.4M
- bbl produced water, same 12 months
- 972,704
- bbl oil since Apr 1981 · 13,053 Mcf gas
- Status
- Approved · WOGCC: Drilling or Drilled Permit
- Approved
- Jun 25, 2009
- Operator
- Marathon Oil Company
- Proposed formation
- Amsden-Darwin-Tensleep
- Target depth
- 5,460 ft
2 APDs on file for this well, newest first
| Approved | Received | Operator | Status | Formation | Target depth |
|---|---|---|---|---|---|
| Jun 25, 2009 | — | Marathon Oil Company | ApprovedDrilling or Drilled Permit | Amsden-Darwin-Tensleep | 5,460 ft |
| Nov 12, 1980 | — | Marathon Oil Company | ApprovedDrilling or Drilled Permit | Tensleep | 5,290 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 11,551 · prior 12 12,105(-5%)
Cozzens 7: Oil by month.
Completions
ONE PER RESERVOIR THE WELL IS COMPLETED IN
| Field | Status | Perforations, ft | Completed | Produced | Oil, bbl | Gas, Mcf | Water, bbl |
|---|---|---|---|---|---|---|---|
| ByronAmsden | Active | 5,300 to 5,350 MD | Sep 25, 2009 | Sep 2009 to Aug 2026 | 302,897 | 5,479 | 37,271,761 |
| ByronEmbar | — | — | Apr 3, 1981 | Mar 1985 to Jul 2009 | 117,067 | 2,730 | 494,219 |
| ByronTensleep | — | — | Apr 3, 1981 | Mar 1985 to Aug 1992 | 166,202 | 1,020 | 5,267,373 |
| ByronEmbar-Tensleep | — | — | — | Apr 1981 to Feb 1985 | 386,538 | 3,824 | 2,007,153 |
Formation tops
Download CSV →12 tops as filed, by depth. A formation filed more than once is listed each time.
| Formation | Depth |
|---|---|
| PEAY | 2,420 ft |
| MUDDY | 3,181 ft |
| DAKOTA | 3,395 ft |
| LAKOTA | 3,510 ft |
| MORRISON | 3,526 ft |
| SUNDANCE | 3,977 ft |
| GYPSUM SPRINGS | 4,351 ft |
| CHUGWATER | 4,483 ft |
| DINWOODY | 4,972 ft |
| EMBAR | 5,000 ft |
| TENSLEEP | 5,080 ft |
| AMSDEN | 5,300 ft |
Source: Wyoming Oil and Gas Conservation Commission, "Geological Markers Based On Form 3"
Formation tops nearby
Well record
- API number
- 49-003-20563
- Location
- NE SE 23-56N-97W · 1210 FSL, 211 FEL
- Coordinates
- 44.81406, -108.49142 ↗
- Elevation
- 3,900 ft
- Elevation KB
- 4,002 ft
- Total depth
- 5,486 ft
- Perforations
- 5,300 to 5,350 ft
- Basin, as WOGCC files it
- Bighorn Basin
- APD
- Approved Jun 25, 2009
- Proposed formation
- Amsden-Darwin-Tensleep
- Target depth
- 5,460 ft
- Spudded
- Jan 19, 1981
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/4900320563, documented in the API reference.