BBakken SubsurfaceNorth Dakota well index

NDIC file 41521 · API 33-025-05045-00-00

Semerad 11-18H

Operated by MARATHON OIL COMPANY · Dunn County, North Dakota

Active (A)Oil and gasSpud 2025

Well facts

Operator
MARATHON OIL COMPANY
Status
Active (A)
Well type
Oil and gas (OG)
Field
BAILEY
Spud date
Total depth
31,614 ft
Legal location
LOT4 Sec 7 T145N R93W
Footages
498 ft FSL · 1,218 ft FWL
County
Dunn County
NDIC file no.
41521
API no.
33-025-05045-00-00

Location & navigation

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47.38799, -102.58344

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

9 months reported, Dec 2025 to Aug 2026, BAKKEN pool.

Cumulative oil200KbblDec ’25 to Aug ’26 · 9 of 9 months known
Peak oil rate966bbl/dJan 2026 · 29,957 bbl in 31 days
Oil, last 12 months200Kbbl9 of 9 months known
Gas–oil ratio, last 12 months589scf/bblfirst year 589 scf/bbl
Water cut, last 12 months72%first year 72% · 507K bbl water in all
Gas sold, last 12 months99%of gas produced · 787 mcf reported flared
05001,000Oil bbl/d568Dec ’25Jan ’26Feb ’26Mar ’26Apr ’26May ’26Jun ’26Jul ’26Aug ’26

Early time

First reported month
Dec 2025
Months to peak
2 (Jan 2026)
Peak month rate
966 bbl/d on 31 days
First 3 months, oil
77,565 bbl
First 6 months, oil
146,129 bbl

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
568 bbl/d
Latest rate as share of peak
58.8%
Uptime, last 12 months
97% of days
Cumulative gas
118K mcf
Cumulative water
507K bbl
Pools reported
BAKKEN
Last 12 months as a table
MonthOil bblGas mcfWater bblDaysOil bbl/dGOR scf/bblWater cut
22,96513,11860,7142882057173%
29,95718,57769,8733196662070%
24,64315,28957,6392888062070%
26,05616,07163,6033184161771%
23,38214,44958,6863077961872%
19,12610,40747,8102966054471%
19,51210,39652,3263065053373%
18,6909,92653,4203160353174%
15,8989,79542,6602856861673%

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.