BBakken SubsurfaceNorth Dakota well index

NDIC file 33825 · API 33-025-03335-00-00

MANDAREE SOUTH 30-31HEL

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
REUNION BAY
Spud date
Total depth
20,972 ft
Legal location
LOT5 Sec 30 T150N R93W
Footages
574 ft FNL · 533 ft FWL
County
Dunn County
NDIC file no.
33825
API no.
33-025-03335-00-00

Location & navigation

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47.78816, -102.64022

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

101 months reported, Apr 2018 to Aug 2026, BAKKEN pool.

Cumulative oil487KbblApr ’18 to Aug ’26 · 101 of 101 months known
Peak oil rate1,497bbl/dMay 2018 · 46,408 bbl in 31 days
Oil, last 12 months16.5Kbbl+22% against the 12 before
Gas–oil ratio, last 12 months8,547scf/bblfirst year 1,237 scf/bbl
Water cut, last 12 months32%first year 21% · 183K bbl water in all
Gas sold, last 12 months97%of gas produced · 2,765 mcf reported flared
05001,0001,500Oil bbl/d3720192020202120222023202420252026

Early time

First reported month
Apr 2018
Months to peak
2 (May 2018)
Peak month rate
1,497 bbl/d on 31 days
First 3 months, oil
81,469 bbl
First 6 months, oil
154,920 bbl
First 12 months, oil
241,417 bbl
First 24 months, oil
312,913 bbl
Share of cumulative in year 1
50%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
37 bbl/d
Latest rate as share of peak
2.5%
Uptime, last 12 months
95% of days
Cumulative gas
1.54M mcf
Cumulative water
183K bbl
Pools reported
BAKKEN
Last 12 months as a table
MonthOil bblGas mcfWater bblDaysOil bbl/dGOR scf/bblWater cut
9589,715493303210,14134%
1,0708,13852331357,60633%
1,62712,80099529567,86738%
2,09513,77496931686,57532%
1,1126,44950714795,79931%
1,23610,19897827468,25144%
1,51911,76561931497,74529%
1,63312,96658330547,94026%
1,53814,48635731509,41919%
1,39513,86557730469,93929%
1,14113,392713313711,73738%
1,14913,244588313711,52734%

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.