BBakken SubsurfaceNorth Dakota well index

NDIC file 26838 · API 33-025-02335-00-00

WOLF CHIEF 27-34HZ

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
21,270 ft
Legal location
NENW Sec 27 T149N R93W
Footages
476 ft FNL · 2,166 ft FWL
County
Dunn County
NDIC file no.
26838
API no.
33-025-02335-00-00

Location & navigation

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47.70166, -102.56939

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 oil332KbblOct ’14 to Aug ’26 · 139 of 143 months known
Peak oil rate1,905bbl/dJul 2018 · 1,905 bbl in 1 days
Oil, last 12 months6,749bbl-42% against the 12 before
Gas–oil ratio, last 12 months2,130scf/bblfirst year 766 scf/bbl
Water cut, last 12 months65%first year 42% · 340K bbl water in all
Gas sold, last 12 months84%of gas produced · 566 mcf reported flared
01,0002,000Oil bbl/d33201620182020202220242026

Early time

First reported month
Oct 2014
Months to peak
6 (Mar 2015)
Peak month rate
1,905 bbl/d on 1 days
First 3 months, oil
—
First 6 months, oil
26,214 bbl (2 of 6 known)
First 12 months, oil
85,979 bbl (8 of 12 known)
First 24 months, oil
133,471 bbl (20 of 24 known)
Share of cumulative in year 1
26%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
33 bbl/d
Latest rate as share of peak
1.7%
Uptime, last 12 months
92% of days
Cumulative gas
376K mcf
Cumulative water
340K 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
5751,5951,29530192,77469%
5901,62797930202,75862%
6131,59094229212,59461%
6201,43690630212,31659%
5041,43576530172,84760%
41084563427152,06161%
5121,13980130172,22561%
41583278427152,00565%
6059591,14228221,58565%
1212938682062,42188%
9991,2252,10231321,22668%
7851,3971,34124331,78063%

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.