WYOMING · WELLS · JOHNSON COUNTY · API 49-019-20607

Conoco W-21221 1-19

PluggedVertical oil wellWOGCC status: Permanently Abandoned

Operator of record
Big Chief Exploration
County
Johnson

A vertical oil well in Johnson County, Wyoming, operated by Big Chief Exploration. WOGCC status: permanently abandoned.

Spudded October 24, 1980; plugged August 25, 1995.

Completed in one field: Hartzog Draw.

It has reported 19,473 bbl of oil, 27,993 Mcf of gas, and 6,640 bbl of water since January 1981; its last reported production was June 1994.

0
bbl oil, 12 months through Aug 2026
0
Mcf gas, same 12 months
0
bbl produced water, same 12 months
19,473
bbl oil since Jan 1981 · 27,993 Mcf gas
Status
Approved · WOGCC: Drilling or Drilled Permit
Approved
Sep 24, 1980
Proposed formation
Shannon
Target depth
9,240 ft

Wells nearby

Every well with a location on file around this well, in any state, nearest first.

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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

05001K198519901995200020052010201520202025

Conoco W-21221 1-19: Oil by month.

Completions

ONE PER RESERVOIR THE WELL IS COMPLETED IN

FieldStatusPerforations, ftCompletedProducedOil, bblGas, McfWater, bbl
Hartzog DrawShannon——Nov 15, 1980Jan 1981 to Jun 199419,47327,9936,640

Formation tops

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8 tops as filed, by depth. A formation filed more than once is listed each time.

FormationDepth
FOX HILLS,FM6,750 ft
LEWIS,SH6,804 ft
TECKLA,SAND MBR (LEWIS SH)7,050 ft
TEAPOT,MBR (PARKMAN SS)7,490 ft
PARKMAN,SS7,786 ft
STEELE,SH8,260 ft
SUSSEX,SS8,784 ft
SHANNON,SS MBR (CODY SH)9,084 ft

Source: Wyoming Oil and Gas Conservation Commission, "Geological Markers Based On Form 3"

Formation tops nearby

Well record

API number
49-019-20607
Location
NE NE 19-46N-76W · 509 FNL, 860 FEL
Elevation
4,633 ft GR
Elevation KB
4,645 ft
Total depth
9,240 ft
Basin, as WOGCC files it
Powder River Basin
APD
Approved Sep 24, 1980
Proposed formation
Shannon
Target depth
9,240 ft
Spudded
Oct 24, 1980
Plugged
Aug 25, 1995

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/4901920607, documented in the API reference.