WYOMING · WELLS · CONVERSE COUNTY · API 49-009-20465

BLK-B-UN Patented 200

Shut inVertical monitor well (not for form 2 reporting) wellWOGCC status: Shut-In

Operator of record
Big Muddy Operating LLC
County
Converse

A vertical monitor well (not for form 2 reporting) well in Converse County, Wyoming, operated by Big Muddy Operating LLC. WOGCC status: shut-in.

Spudded October 29, 1973.

Completed in 3 fields: Glenrock South, Glenrock South, Glenrock South.

It has reported 64,288 bbl of oil, 3,375 Mcf of gas, and 1,836,809 bbl of water since the record begins in January 1978; its last reported production was January 2011.

0
bbl oil, 12 months through Aug 2026
0
Mcf gas, same 12 months
0
bbl produced water, same 12 months
64,288
bbl oil since Jan 1978 · 3,375 Mcf gas
Status
Approved · WOGCC: Drilling or Drilled Permit
Approved
Oct 29, 1973
Proposed formation
Muddy
Target depth
6,020 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

05001K1.5K1980198519901995200020052010201520202025

BLK-B-UN Patented 200: Oil by month.

Completions

ONE PER RESERVOIR THE WELL IS COMPLETED IN

FieldStatusPerforations, ftCompletedProducedOil, bblGas, McfWater, bbl
Glenrock SouthMuddy———by Jan 1978 to Jan 201164,2463,3751,833,040
Glenrock SouthDakota—5,754 to 5,761 MDDec 3, 1973Apr 2001 to Apr 20014203,769
Glenrock SouthMuddy/Dakota——Dec 3, 1973————

Formation tops

Download CSV →

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

FormationDepth
PARKMAN,SS700 ft
NIOBRARA,FM3,974 ft
FRONTIER,FM4,662 ft
MOWRY,MBR (SH)5,556 ft
MUDDY,FM5,754 ft
DAKOTA,FM5,937 ft

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

Formation tops nearby

Operators of record

OperatorFromTo
Rancher Energy Oil & Gas CorpDec 1, 2006today
Nielson & Associates IncOct 1, 2004Dec 1, 2006
Continental Industries LCJan 1, 2000Oct 1, 2004

Well record

API number
49-009-20465
Location
NE SW 7-33N-75W · 2150 FSL, 1400 FWL
Elevation KB
5,258 ft
Total depth
6,020 ft
Perforations
5,754 to 5,761 ft
Land
State
Basin, as WOGCC files it
Powder River Basin
APD
Approved Oct 29, 1973
Proposed formation
Muddy
Target depth
6,020 ft
Spudded
Oct 29, 1973

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/4900920465, documented in the API reference.