BBakken SubsurfaceNorth Dakota well index

NDIC file 27567 · API 33-025-02455-00-00

HELLERUD 14-23TFH

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
CHIMNEY BUTTE
Spud date
Total depth
21,513 ft
Legal location
NWNW Sec 26 T146N R95W
Footages
673 ft FNL · 445 ft FWL
County
Dunn County
NDIC file no.
27567
API no.
33-025-02455-00-00

Location & navigation

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47.44262, -102.75636

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

147 months reported, Jun 2014 to Aug 2026, BAKKEN and CONFIDENTIAL pools.

Cumulative oil176KbblJun ’14 to Aug ’26 · 146 of 147 months known
Peak oil rate358bbl/dAug 2014 · 6,441 bbl in 18 days
Oil, last 12 months2,117bbl-45% against the 12 before
Gas–oil ratio, last 12 months1,137scf/bblfirst year 977 scf/bbl
Water cut, last 12 months68%first year 38% · 175K bbl water in all
Gas sold, last 12 months52%of gas produced · 730 mcf reported flared
0200400Oil bbl/d10201620182020202220242026

Early time

First reported month
Jun 2014
Months to peak
5 (Oct 2014)
Peak month rate
358 bbl/d on 18 days
First 3 months, oil
11,128 bbl (2 of 3 known)
First 6 months, oil
37,892 bbl (5 of 6 known)
First 12 months, oil
63,758 bbl (11 of 12 known)
First 24 months, oil
91,091 bbl (23 of 24 known)
Share of cumulative in year 1
36%

Today

Last reported month
Aug 2026
Last month with oil
Jan 2026
Latest oil rate
10 bbl/d
Latest rate as share of peak
2.8%
Uptime, last 12 months
39% of days
Cumulative gas
204K mcf
Cumulative water
175K bbl
Unknown months
1 of 147 (confidential or not in that month's report)
Pools reported
BAKKEN, CONFIDENTIAL
Last 12 months as a table
MonthOil bblGas mcfWater bblDaysOil bbl/dGOR scf/bblWater cut
55257790930181,04562%
44156586031141,28166%
49155197630161,12267%
4334551,12331141,05172%
20026054320101,30073%
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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.