BBakken SubsurfaceNorth Dakota well index

NDIC file 18737 · API 33-061-01276-00-00

MASON 2-11H

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

Active (A)Oil and gasSpud 2010

Well facts

Operator
DEVON ENERGY WILLISTON, L.L.C.
Status
Active (A)
Well type
Oil and gas (OG)
Field
VAN HOOK
Spud date
Total depth
19,638 ft
Legal location
LOT3 Sec 2 T150N R92W
Footages
275 ft FNL · 1,881 ft FWL
County
Mountrail County
NDIC file no.
18737
API no.
33-061-01276-00-00

Location & navigation

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47.84695, -102.42092

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

188 months reported, Jan 2011 to Aug 2026, BAKKEN pool.

Cumulative oil377KbblJan ’11 to Aug ’26 · 188 of 188 months known
Peak oil rate964bbl/dJan 2011 · 14,454 bbl in 15 days
Oil, last 12 months8,035bbl-11% against the 12 before
Gas–oil ratio, last 12 months948scf/bblfirst year 310 scf/bbl
Water cut, last 12 months23%first year 27% · 128K bbl water in all
Gas sold, last 12 months0%of gas produced · 6,070 mcf reported flared
05001,000Oil bbl/d1820122014201620182020202220242026

Early time

First reported month
Jan 2011
Months to peak
1 (Jan 2011)
Peak month rate
964 bbl/d on 15 days
First 3 months, oil
36,816 bbl
First 6 months, oil
66,617 bbl
First 12 months, oil
107,622 bbl
First 24 months, oil
172,475 bbl
Share of cumulative in year 1
29%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
18 bbl/d
Latest rate as share of peak
1.9%
Uptime, last 12 months
98% of days
Cumulative gas
216K mcf
Cumulative water
128K bbl
Pools reported
BAKKEN
Last 12 months as a table
MonthOil bblGas mcfWater bblDaysOil bbl/dGOR scf/bblWater cut
781740232302694823%
732694191312494821%
737699219302594823%
763724261312594925%
717679328312394731%
692656208282594823%
719682245312394925%
603571244282294729%
531503118281994718%
588559123302095117%
617584179312094722%
555527102301895016%

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.