BBakken SubsurfaceNorth Dakota well index

NDIC file 35524 · API 33-025-03582-00-00

MASON 14-31TFH

Operated by MARATHON OIL COMPANY · Dunn County, North Dakota

Active (A)Oil and gasSpud 2019

Well facts

Operator
MARATHON OIL COMPANY
Status
Active (A)
Well type
Oil and gas (OG)
Field
KILLDEER
Spud date
Total depth
21,446 ft
Legal location
LOT1 Sec 1 T145N R95W
Footages
1,151 ft FNL · 292 ft FEL
County
Dunn County
NDIC file no.
35524
API no.
33-025-03582-00-00

Location & navigation

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47.41224, -102.71686

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

87 months reported, Jun 2019 to Aug 2026, BAKKEN pool.

Cumulative oil370KbblJun ’19 to Aug ’26 · 87 of 87 months known
Peak oil rate2,060bbl/dJun 2019 · 24,726 bbl in 12 days
Oil, last 12 months18.9Kbbl-8% against the 12 before
Gas–oil ratio, last 12 months1,384scf/bblfirst year 1,249 scf/bbl
Water cut, last 12 months67%first year 60% · 605K bbl water in all
Gas sold, last 12 months71%of gas produced · 6,329 mcf reported flared
01,0002,0003,000Oil bbl/d542020202120222023202420252026

Early time

First reported month
Jun 2019
Months to peak
2 (Jul 2019)
Peak month rate
2,060 bbl/d on 12 days
First 3 months, oil
81,729 bbl
First 6 months, oil
143,929 bbl
First 12 months, oil
204,307 bbl
First 24 months, oil
262,837 bbl
Share of cumulative in year 1
55%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
54 bbl/d
Latest rate as share of peak
2.6%
Uptime, last 12 months
93% of days
Cumulative gas
497K mcf
Cumulative water
605K bbl
Pools reported
BAKKEN
Last 12 months as a table
MonthOil bblGas mcfWater bblDaysOil bbl/dGOR scf/bblWater cut
2495086795502,04073%
2,0322,3974,46531661,18069%
1,6411,4353,285305587467%
1,6031,3923,144315286866%
1,8881,6583,611306387866%
1,5072,1432,70028541,42264%
1,7132,2533,12431551,31565%
1,5232,2332,66530511,46664%
1,4092,5112,59330471,78265%
2,0683,5703,93830691,72666%
1,5462,8014,14831501,81273%
1,6863,2103,10331541,90465%

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.