BBakken SubsurfaceNorth Dakota well index

NDIC file 22129 · API 33-061-01976-00-00

MASON 2-11HA

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

Active (A)Oil and gasSpud 2012

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
20,324 ft
Legal location
NENW Sec 2 T150N R92W
Footages
255 ft FNL · 1,607 ft FWL
County
Mountrail County
NDIC file no.
22129
API no.
33-061-01976-00-00

Location & navigation

Navigate with Google MapsDriving directions to the well headOpen in Google MapsSatellite view of the padOpen in Apple Maps

47.84700, -102.42203

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

See it in 3D

Open in the regional 3D viewerSurveyed well path, operator and production; Bakken-system horizontals onlyBakken Subsurface 3DBasin-wide production playback

Production

169 months reported, Aug 2012 to Aug 2026, BAKKEN and CONFIDENTIAL pools.

Cumulative oil206KbblAug ’12 to Aug ’26 · 168 of 169 months known
Peak oil rate290bbl/dNov 2012 · 8,691 bbl in 30 days
Oil, last 12 months6,694bbl+33% against the 12 before
Gas–oil ratio, last 12 months948scf/bblfirst year 544 scf/bbl
Water cut, last 12 months7%first year 20% · 41.6K bbl water in all
Gas sold, last 12 months0%of gas produced · 4,551 mcf reported flared
0100200300Oil bbl/d142014201620182020202220242026

Early time

First reported month
Aug 2012
Months to peak
4 (Nov 2012)
Peak month rate
290 bbl/d on 30 days
First 3 months, oil
12,399 bbl (2 of 3 known)
First 6 months, oil
35,097 bbl (5 of 6 known)
First 12 months, oil
62,297 bbl (11 of 12 known)
First 24 months, oil
97,568 bbl (23 of 24 known)
Share of cumulative in year 1
30%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
14 bbl/d
Latest rate as share of peak
4.9%
Uptime, last 12 months
99% of days
Cumulative gas
155K mcf
Cumulative water
41.6K bbl
Unknown months
1 of 169 (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
4254032130149485%
6155836131209489%
6886536930239499%
6576234631219487%
6736384931229487%
5815514428219487%
62158978312094811%
5545254330189487%
5054783128189476%
4924672430169495%
4534301631159493%
4304083630149498%

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.