BBakken SubsurfaceNorth Dakota well index

NDIC file 40070 · API 33-025-04734-00-00

SIMPSON 11-1TFH

Operated by MARATHON OIL COMPANY · Dunn County, North Dakota

Active (A)Oil and gasSpud 2023

Well facts

Operator
MARATHON OIL COMPANY
Status
Active (A)
Well type
Oil and gas (OG)
Field
KILLDEER
Spud date
Total depth
21,601 ft
Legal location
SESE Sec 35 T146N R95W
Footages
915 ft FSL · 601 ft FEL
County
Dunn County
NDIC file no.
40070
API no.
33-025-04734-00-00

Location & navigation

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47.41802, -102.73950

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

30 months reported, Mar 2024 to Aug 2026, BAKKEN pool.

Cumulative oil221KbblMar ’24 to Aug ’26 · 30 of 30 months known
Peak oil rate1,206bbl/dMar 2024 · 26,531 bbl in 22 days
Oil, last 12 months19.7Kbbl-67% against the 12 before
Gas–oil ratio, last 12 months911scf/bblfirst year 907 scf/bbl
Water cut, last 12 months61%first year 58% · 312K bbl water in all
Gas sold, last 12 months97%of gas produced · 170 mcf reported flared
05001,0001,500Oil bbl/d111Mar ’24Jun ’24Sep ’24Dec ’24Mar ’25Jun ’25Sep ’25Dec ’25Mar ’26Jun ’26

Early time

First reported month
Mar 2024
Months to peak
2 (Apr 2024)
Peak month rate
1,206 bbl/d on 22 days
First 3 months, oil
85,612 bbl
First 6 months, oil
142,194 bbl
First 12 months, oil
190,312 bbl
First 24 months, oil
212,378 bbl
Share of cumulative in year 1
86%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
111 bbl/d
Latest rate as share of peak
9.2%
Uptime, last 12 months
90% of days
Cumulative gas
204K mcf
Cumulative water
312K bbl
Pools reported
BAKKEN
Last 12 months as a table
MonthOil bblGas mcfWater bblDaysOil bbl/dGOR scf/bblWater cut
1,6201,8861,95030541,16455%
1,5161,0092,028314966657%
1,9907333,017306636860%
2,2591,1623,496317351461%
1,7421,2513,000315671863%
1,5131,3422,642285488764%
1,5981,3852,867315286764%
1,4821,9632,73030491,32565%
1,7882,1102,70731581,18060%
1,5951,7542,37830531,10060%
1,0881,2641,344101091,16255%
1,5512,1262,333141111,37160%

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.