WYOMING · WELLS · NATRONA COUNTY · API 49-025-21722
North Grieve Unit 24-23
ActiveVertical oil wellWOGCC status: Producing Oil Well
- Operator of record
- Chaco Energy Company
- Permitted by
- Flying J Oil & Gas Inc
- County
- Natrona
- Field
- Grieve North
A vertical oil well in Natrona County, Wyoming, operated by Chaco Energy Company. WOGCC status: producing oil well.
Spudded February 29, 1984.
Completed in one field: Grieve North.
It has reported 403,673 bbl of oil, 9,352,639 Mcf of gas, and 245 bbl of water since May 1984; its last reported production was April 2025.
- 0
- bbl oil, 12 months through Aug 2026
- 0
- Mcf gas, same 12 months
- 0
- bbl produced water, same 12 months
- 403,673
- bbl oil since May 1984 · 9.4M Mcf gas
- Status
- Approved · WOGCC: Drilling or Drilled Permit
- Approved
- Feb 29, 1984
- Operator
- Flying J Oil & Gas Inc
- Proposed formation
- Muddy
- Target depth
- 9,964 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 0
North Grieve Unit 24-23: Oil by month.
Completions
ONE PER RESERVOIR THE WELL IS COMPLETED IN
| Field | Status | Perforations, ft | Completed | Produced | Oil, bbl | Gas, Mcf | Water, bbl |
|---|---|---|---|---|---|---|---|
| Grieve NorthMuddy | — | — | May 25, 1984 | May 1984 to Apr 2025 | 403,673 | 9,352,639 | 245 |
Formation tops
Download CSV →19 tops as filed, by depth. A formation filed more than once is listed each time.
| Formation | Depth |
|---|---|
| WHITE RIVER | 0 ft |
| LEWIS | 3,493 ft |
| MESAVERDE | 3,720 ft |
| TEAPOT | 3,720 ft |
| PARKMAN | 4,026 ft |
| PHAYLES | 4,244 ft |
| CODY | 4,559 ft |
| SUSSEX | 5,886 ft |
| SHANNON | 6,262 ft |
| NIOBRARA | 8,200 ft |
| CARLILE | 8,530 ft |
| FRONTIER | 8,800 ft |
| FRONTIER-2 | 9,053 ft |
| MOWRY | 9,465 ft |
| THERMOPOLIS | 9,710 ft |
| MUDDY | 9,768 ft |
| GRIEVE | 9,796 ft |
| SKULL CREEK | 9,828 ft |
| DAKOTA | 9,896 ft |
Source: Wyoming Oil and Gas Conservation Commission, "Geological Markers Based On Form 3"
Formation tops nearby
Operators of record
| Operator | From | To |
|---|---|---|
| St Mary Land & Exploration Co | Dec 1, 2007 | today |
| Nance Petroleum Corporation | Feb 1, 2003 | Dec 1, 2007 |
| Flying J Oil & Gas Inc | Jan 1, 2000 | Feb 1, 2003 |
Well record
- API number
- 49-025-21722
- Location
- SE SW 23-33N-86W · 497 FSL, 1916 FWL
- Coordinates
- 42.81080, -107.11520 ↗
- Elevation KB
- 6,566 ft
- Total depth
- 9,964 ft
- Basin, as WOGCC files it
- Wind River Basin
- APD
- Approved Feb 29, 1984
- Proposed formation
- Muddy
- Target depth
- 9,964 ft
- Spudded
- Feb 29, 1984
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/4902521722, documented in the API reference.