BBakken SubsurfaceNorth Dakota well index

NDIC file 26837 · API 33-025-02334-00-00

WOLF CHIEF 27-34HC

Operated by DEVON ENERGY WILLISTON, L.L.C. · Dunn County, North Dakota

Active (A)Oil and gasSpud 2014

Well facts

Operator
DEVON ENERGY WILLISTON, L.L.C.
Status
Active (A)
Well type
Oil and gas (OG)
Field
MANDAREE
Spud date
Total depth
21,156 ft
Legal location
NENW Sec 27 T149N R93W
Footages
463 ft FNL · 2,118 ft FWL
County
Dunn County
NDIC file no.
26837
API no.
33-025-02334-00-00

Location & navigation

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47.70169, -102.56958

Published surface location (NAD83). A horizontal well's lateral can run up to three miles from this point.

See it in 3D

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Production

143 months reported, Oct 2014 to Aug 2026, BAKKEN and CONFIDENTIAL pools.

Cumulative oil432KbblOct ’14 to Aug ’26 · 139 of 143 months known
Peak oil rate868bbl/dFeb 2015 · 8,678 bbl in 10 days
Oil, last 12 months9,205bbl-17% against the 12 before
Gas–oil ratio, last 12 months2,925scf/bblfirst year 690 scf/bbl
Water cut, last 12 months55%first year 37% · 262K bbl water in all
Gas sold, last 12 months91%of gas produced · 848 mcf reported flared
05001,000Oil bbl/d24201620182020202220242026

Early time

First reported month
Oct 2014
Months to peak
6 (Mar 2015)
Peak month rate
868 bbl/d on 10 days
First 3 months, oil
—
First 6 months, oil
31,540 bbl (2 of 6 known)
First 12 months, oil
99,441 bbl (8 of 12 known)
First 24 months, oil
174,403 bbl (20 of 24 known)
Share of cumulative in year 1
23%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
24 bbl/d
Latest rate as share of peak
2.8%
Uptime, last 12 months
94% of days
Cumulative gas
454K mcf
Cumulative water
262K bbl
Unknown months
4 of 143 (confidential or not in that month's report)
Pools reported
BAKKEN, CONFIDENTIAL
Last 12 months as a table
MonthOil bblGas mcfWater bblDaysOil bbl/dGOR scf/bblWater cut
8112,7121,05330273,34456%
8062,85684031263,54351%
7312,37275129253,24551%
3471,46533714254,22249%
1,0993,0121,10230372,74150%
7411,84966526282,49547%
8142,23867031262,74945%
8382,3591,13330282,81557%
8072,2011,28731262,72761%
7272,0211,43830242,78066%
7251,6681,18731232,30162%
7592,16875531242,85650%

As first reported to NDIC in each month's report (NDIC Monthly Production Reports, Jan 2003 to Aug 2026). Operators amend past months later and the published reports are not updated, so a month can differ from the current record. A blank or missing month is unknown, not zero, and a cumulative over such months is a lower bound; two pools reported in one month are summed. Rates per producing day divide the month's volume by the days reported, so a month reported without producing days has no rate. Gas–oil ratio is gas produced over oil produced; water cut is water over oil plus water. Months from Jan 2003 to Apr 2015 are read from the Division's PDF reports, which print no flared gas and list a well in a unitized pool only inside its unit's total.

Spacing units

Units whose published footprint holds at least 660 ft of this well's surveyed lateral. Allowances are facts extracted from signed NDIC orders, machine-extracted and not human-reviewed.

Nearby wells

Closest published well heads within 3 miles; wells on one pad share a location.

Other published attributes (1)
symbolA-OG

DMR shapefile columns not shown above, unchanged.