BBakken SubsurfaceNorth Dakota well index

NDIC file 16759 · API 33-025-00658-00-00

GRANT CARLSON 24-31H

Operated by MARATHON OIL COMPANY · Dunn County, North Dakota

Active (A)Oil and gasSpud 2007

Well facts

Operator
MARATHON OIL COMPANY
Status
Active (A)
Well type
Oil and gas (OG)
Field
KILLDEER
Spud date
Total depth
20,463 ft
Legal location
SESW Sec 31 T146N R94W
Footages
660 ft FSL · 1,980 ft FWL
County
Dunn County
NDIC file no.
16759
API no.
33-025-00658-00-00

Location & navigation

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47.41726, -102.70762

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

224 months reported, Jan 2008 to Aug 2026, BAKKEN and CONFIDENTIAL pools.

Cumulative oil660KbblJan ’08 to Aug ’26 · 221 of 224 months known
Peak oil rate608bbl/dAug 2023 · 18,838 bbl in 31 days
Oil, last 12 months26.6Kbbl-6% against the 12 before
Gas–oil ratio, last 12 months3,415scf/bblfirst year 528 scf/bbl
Water cut, last 12 months69%first year 14% · 624K bbl water in all
Gas sold, last 12 months98%of gas produced · 1,219 mcf reported flared
0250500750Oil bbl/d672008201020122014201620182020202220242026

Early time

First reported month
Jan 2008
Months to peak
188 (Aug 2023)
Peak month rate
608 bbl/d on 31 days
First 3 months, oil
—
First 6 months, oil
25,613 bbl (3 of 6 known)
First 12 months, oil
57,234 bbl (9 of 12 known)
First 24 months, oil
92,949 bbl (21 of 24 known)
Share of cumulative in year 1
9%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
67 bbl/d
Latest rate as share of peak
11.1%
Uptime, last 12 months
99% of days
Cumulative gas
852K mcf
Cumulative water
624K bbl
Unknown months
3 of 224 (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
1,7845,4885,38430593,07675%
2,2436,4945,31931722,89570%
2,2796,3643,93130762,79263%
2,1376,3954,72531692,99369%
2,3697,6215,80931763,21771%
2,0927,5495,32428753,60972%
2,2997,2995,61231743,17571%
2,2267,9004,60230743,54967%
2,0648,4314,63828744,08569%
2,52710,2784,08830844,06762%
2,5308,8414,48231823,49464%
2,0908,3214,36431673,98168%

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.