BBakken SubsurfaceNorth Dakota well index

NDIC file 26835 · API 33-025-02332-00-00

WOLF CHIEF 27-34HW

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

Active (A)Oil and gasSpud 2017

Well facts

Operator
DEVON ENERGY WILLISTON, L.L.C.
Status
Active (A)
Well type
Oil and gas (OG)
Field
MANDAREE
Spud date
Total depth
21,206 ft
Legal location
NENW Sec 27 T149N R93W
Footages
437 ft FNL · 2,021 ft FWL
County
Dunn County
NDIC file no.
26835
API no.
33-025-02332-00-00

Location & navigation

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47.70177, -102.56997

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

115 months reported, Feb 2017 to Aug 2026, BAKKEN and CONFIDENTIAL pools.

Cumulative oil470KbblFeb ’17 to Aug ’26 · 111 of 115 months known
Peak oil rate920bbl/dJun 2017 · 27,592 bbl in 30 days
Oil, last 12 months21.3Kbbl-17% against the 12 before
Gas–oil ratio, last 12 months4,247scf/bblfirst year 992 scf/bbl
Water cut, last 12 months58%first year 45% · 437K bbl water in all
Gas sold, last 12 months96%of gas produced · 1,816 mcf reported flared
05001,000Oil bbl/d51201820192020202120222023202420252026

Early time

First reported month
Feb 2017
Months to peak
5 (Jun 2017)
Peak month rate
920 bbl/d on 30 days
First 3 months, oil
—
First 6 months, oil
50,364 bbl (2 of 6 known)
First 12 months, oil
119,270 bbl (8 of 12 known)
First 24 months, oil
213,775 bbl (20 of 24 known)
Share of cumulative in year 1
25%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
51 bbl/d
Latest rate as share of peak
5.6%
Uptime, last 12 months
95% of days
Cumulative gas
654K mcf
Cumulative water
437K bbl
Unknown months
4 of 115 (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
2,38610,2663,13630804,30357%
2,18110,7002,82630734,90656%
1,9739,4542,56129684,79256%
1,9348,4782,57731624,38457%
1,8647,8332,34131604,20256%
1,7136,3982,31027633,73557%
1,8158,2022,47431594,51958%
7933,7831,41118444,77064%
1,4935,9532,95930503,98766%
1,8156,7052,59429633,69459%
1,7775,2422,34231572,95057%
1,5897,5912,12131514,77757%

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.