BBakken SubsurfaceNorth Dakota well index

NDIC file 28705 · API 33-025-02595-00-00

CASTNER 34-20H

Operated by MARATHON OIL COMPANY · Dunn County, North Dakota

Active (A)Oil and gasSpud 2014

Well facts

Operator
MARATHON OIL COMPANY
Status
Active (A)
Well type
Oil and gas (OG)
Field
BAILEY
Spud date
Total depth
20,742 ft
Legal location
NWNE Sec 29 T146N R93W
Footages
426 ft FNL · 2,200 ft FEL
County
Dunn County
NDIC file no.
28705
API no.
33-025-02595-00-00

Location & navigation

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47.44332, -102.55482

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

139 months reported, Feb 2015 to Aug 2026, BAKKEN pool.

Cumulative oil321KbblFeb ’15 to Aug ’26 · 139 of 139 months known
Peak oil rate1,593bbl/dFeb 2015 · 20,711 bbl in 13 days
Oil, last 12 months14.5Kbbl+11590% against the 12 before
Gas–oil ratio, last 12 months876scf/bblfirst year 615 scf/bbl
Water cut, last 12 months43%first year 39% · 227K bbl water in all
Gas sold, last 12 months68%of gas produced · 2,523 mcf reported flared
01,0002,000Oil bbl/d41201620182020202220242026

Early time

First reported month
Feb 2015
Months to peak
2 (Mar 2015)
Peak month rate
1,593 bbl/d on 13 days
First 3 months, oil
63,910 bbl
First 6 months, oil
94,550 bbl
First 12 months, oil
137,012 bbl
First 24 months, oil
189,920 bbl
Share of cumulative in year 1
43%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
41 bbl/d
Latest rate as share of peak
2.6%
Uptime, last 12 months
88% of days
Cumulative gas
241K mcf
Cumulative water
227K bbl
Pools reported
BAKKEN
Last 12 months as a table
MonthOil bblGas mcfWater bblDaysOil bbl/dGOR scf/bblWater cut
1,2371,24889130411,00942%
1,9361,5241,391257778742%
1,8001,5441,378306085843%
1,3121,115930284785041%
1,5061,2301,012314981740%
87795785828311,09149%
1,145872934313776245%
1,136892873303878543%
667645478193596742%
31027020783987140%
1,2841,213858314194540%
1,2861,187936314192342%

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.