BBakken SubsurfaceNorth Dakota well index

NDIC file 38538 · API 33-025-04345-00-00

ANNABELLE 21-18H

Operated by MARATHON OIL COMPANY · Dunn County, North Dakota

Active (A)Oil and gasSpud 2021

Well facts

Operator
MARATHON OIL COMPANY
Status
Active (A)
Well type
Oil and gas (OG)
Field
BAILEY
Spud date
Total depth
21,266 ft
Legal location
NENW Sec 18 T146N R93W
Footages
499 ft FNL · 2,452 ft FWL
County
Dunn County
NDIC file no.
38538
API no.
33-025-04345-00-00

Location & navigation

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47.47222, -102.57813

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

52 months reported, May 2022 to Aug 2026, BAKKEN pool.

Cumulative oil303KbblMay ’22 to Aug ’26 · 52 of 52 months known
Peak oil rate1,424bbl/dMay 2022 · 41,285 bbl in 29 days
Oil, last 12 months22.9Kbbl-16% against the 12 before
Gas–oil ratio, last 12 months3,451scf/bblfirst year 821 scf/bbl
Water cut, last 12 months59%first year 58% · 410K bbl water in all
Gas sold, last 12 months93%of gas produced · 3,410 mcf reported flared
05001,0001,500Oil bbl/d46May ’22Nov ’22May ’23Nov ’23May ’24Nov ’24May ’25Nov ’25May ’26

Early time

First reported month
May 2022
Months to peak
1 (May 2022)
Peak month rate
1,424 bbl/d on 29 days
First 3 months, oil
106,979 bbl
First 6 months, oil
148,264 bbl
First 12 months, oil
186,691 bbl
First 24 months, oil
241,844 bbl
Share of cumulative in year 1
62%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
46 bbl/d
Latest rate as share of peak
3.2%
Uptime, last 12 months
99% of days
Cumulative gas
415K mcf
Cumulative water
410K bbl
Pools reported
BAKKEN
Last 12 months as a table
MonthOil bblGas mcfWater bblDaysOil bbl/dGOR scf/bblWater cut
2,1705,9124,83030722,72469%
2,5997,1954,05731842,76861%
2,7627,2163,50730922,61356%
2,3166,9072,81330772,98255%
2,1767,0292,69130733,23055%
1,7176,4902,26128613,78057%
1,7916,6182,49331583,69558%
1,5756,1532,29630523,90759%
1,5277,1722,23431494,69759%
1,5807,0122,34430534,43860%
1,2365,2931,63930414,28257%
1,4135,9002,11631464,17660%

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.