WYOMING · WELLS · NIOBRARA COUNTY · API 49-027-20725

Federal W-64028A 43-12

ActiveVertical oil wellWOGCC status: Producing Oil Well

Operator of record
Darrah John Jay Jr
County
Niobrara

A vertical oil well in Niobrara County, Wyoming, operated by Darrah John Jay Jr. WOGCC status: producing oil well.

Spudded April 19, 1955.

Completed in 2 fields: Ant Hills North, Ant Hills North.

It has reported 180,282 bbl of oil, 376,252 Mcf of gas, and 3,878,293 bbl of water since August 1984; its last reported production was June 2019.

0
bbl oil, 12 months through Aug 2026
0
Mcf gas, same 12 months
0
bbl produced water, same 12 months
180,282
bbl oil since Aug 1984 · 376,252 Mcf gas
Status
Approved · WOGCC: Drilling or Drilled Permit
Approved
Apr 13, 1955
Proposed formation
Dakota
Target depth
7,398 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

02K4K198619881990199219941996199820002002200420062008201020122014201620182020202220242026

Federal W-64028A 43-12: Oil by month.

Completions

ONE PER RESERVOIR THE WELL IS COMPLETED IN

FieldStatusPerforations, ftCompletedProducedOil, bblGas, McfWater, bbl
Ant Hills NorthLeo—6,728 to 6,840 MDJan 12, 2011Dec 2011 to Jun 20199,859376,252528
Ant Hills NorthDakota——Aug 7, 1984Aug 1984 to Nov 2010170,42303,877,765

Formation tops

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

FormationDepth
MOWRY,MBR (SH)4,406 ft
MUDDY,FM4,598 ft
DAKOTA,FM4,778 ft
FUSON,FM (INYAN KARA GP)4,915 ft
LAKOTA,FM (INYAN KARA GP)4,924 ft
MORRISON,FM5,128 ft
SUNDANCE,FM5,304 ft
CANYON SPRINGS,SS MBR (RIERDON5,625 ft
SPEARFISH,FM5,820 ft
GOOSE EGG,FM5,900 ft
FORELLE,LS6,050 ft
GLENDO,SH MBR (GOOSE EGG FM)6,068 ft
MINNEKAHTA,LS6,130 ft
OPECHE,FM6,160 ft
MINNELUSA,FM6,253 ft
CONVERSE,SS MBR (MINNELUSA FM)6,265 ft
BELL7,346 ft
MADISON,FM7,378 ft

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

Formation tops nearby

Well record

API number
49-027-20725
Location
NE SE 12-37N-63W · 1371 FSL, 1100 FEL
Elevation
4,245 ft
Elevation KB
4,240 ft
Total depth
7,398 ft
Perforations
6,728 to 6,840 ft
Basin, as WOGCC files it
Powder River Basin
APD
Approved Apr 13, 1955
Proposed formation
Dakota
Target depth
7,398 ft
Spudded
Apr 19, 1955

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/4902720725, documented in the API reference.