BBakken SubsurfaceNorth Dakota well index

NDIC file 39699 · API 33-025-04662-00-00

DEMAY 21-4H

Operated by MARATHON OIL COMPANY · Dunn County, North Dakota

Active (A)Oil and gasSpud 2023

Well facts

Operator
MARATHON OIL COMPANY
Status
Active (A)
Well type
Oil and gas (OG)
Field
KILLDEER
Spud date
Total depth
21,250 ft
Legal location
SESW Sec 33 T146N R94W
Footages
385 ft FSL · 1,899 ft FWL
County
Dunn County
NDIC file no.
39699
API no.
33-025-04662-00-00

Location & navigation

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47.41656, -102.66593

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

34 months reported, Nov 2023 to Aug 2026, BAKKEN pool.

Cumulative oil228KbblNov ’23 to Aug ’26 · 34 of 34 months known
Peak oil rate678bbl/dDec 2023 · 20,334 bbl in 30 days
Oil, last 12 months28.8Kbbl-49% against the 12 before
Gas–oil ratio, last 12 months1,419scf/bblfirst year 1,047 scf/bbl
Water cut, last 12 months62%first year 65% · 409K bbl water in all
Gas sold, last 12 months98%of gas produced · 108 mcf reported flared
0250500750Oil bbl/d98Nov ’23May ’24Nov ’24May ’25Nov ’25May ’26

Early time

First reported month
Nov 2023
Months to peak
2 (Dec 2023)
Peak month rate
678 bbl/d on 30 days
First 3 months, oil
36,732 bbl
First 6 months, oil
90,590 bbl
First 12 months, oil
158,114 bbl
First 24 months, oil
204,754 bbl
Share of cumulative in year 1
69%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
98 bbl/d
Latest rate as share of peak
14.5%
Uptime, last 12 months
82% of days
Cumulative gas
262K mcf
Cumulative water
409K bbl
Pools reported
BAKKEN
Last 12 months as a table
MonthOil bblGas mcfWater bblDaysOil bbl/dGOR scf/bblWater cut
2,5763,5624,52627951,38364%
2,9173,9655,48231941,35965%
2,7453,5854,21029951,30661%
0000———
8969921,71312751,10766%
2,8542,8105,2472810298565%
3,2483,8895,272311051,19762%
3,0334,2994,961301011,41762%
2,5273,7293,98329871,47661%
2,8084,9803,387271041,77455%
2,1603,7783,05523941,74959%
3,0385,2764,25331981,73758%

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.