BBakken SubsurfaceNorth Dakota well index

NDIC file 40289 · API 33-025-04803-00-00

MADSEN 41-13H

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
21,182 ft
Legal location
NENE Sec 13 T145N R95W
Footages
451 ft FNL · 1,081 ft FEL
County
Dunn County
NDIC file no.
40289
API no.
33-025-04803-00-00

Location & navigation

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47.38533, -102.72028

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

29 months reported, Apr 2024 to Aug 2026, BAKKEN pool.

Cumulative oil270KbblApr ’24 to Aug ’26 · 29 of 29 months known
Peak oil rate1,288bbl/dApr 2024 · 25,756 bbl in 20 days
Oil, last 12 months41.3Kbbl-59% against the 12 before
Gas–oil ratio, last 12 months782scf/bblfirst year 774 scf/bbl
Water cut, last 12 months48%first year 56% · 328K bbl water in all
Gas sold, last 12 months98%of gas produced · 298 mcf reported flared
05001,0001,500Oil bbl/d161Apr ’24Jul ’24Oct ’24Jan ’25Apr ’25Jul ’25Oct ’25Jan ’26Apr ’26Jul ’26

Early time

First reported month
Apr 2024
Months to peak
3 (Jun 2024)
Peak month rate
1,288 bbl/d on 20 days
First 3 months, oil
78,828 bbl
First 6 months, oil
143,829 bbl
First 12 months, oil
197,137 bbl
First 24 months, oil
253,273 bbl
Share of cumulative in year 1
73%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
161 bbl/d
Latest rate as share of peak
12.5%
Uptime, last 12 months
68% of days
Cumulative gas
213K mcf
Cumulative water
328K bbl
Pools reported
BAKKEN
Last 12 months as a table
MonthOil bblGas mcfWater bblDaysOil bbl/dGOR scf/bblWater cut
6,7846,5746,4893022696949%
4,0183,8333,3602218395446%
0000———
0000———
4,9003,9464,0002519680545%
4,5272,7944,4432816261750%
4,5502,9754,4133114765449%
4,4013,0724,3553014769850%
2,7031,9722,8221914273051%
236181196211876745%
4,1853,0683,8272914473348%
4,9883,8704,6323116177648%

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.