BBakken SubsurfaceNorth Dakota well index

NDIC file 16754 · API 33-025-00656-00-00

JOHN REISS JR 34-21H

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
19,780 ft
Legal location
SWSE Sec 21 T145N R94W
Footages
660 ft FSL · 2,050 ft FEL
County
Dunn County
NDIC file no.
16754
API no.
33-025-00656-00-00

Location & navigation

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47.35932, -102.66066

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

225 months reported, Dec 2007 to Aug 2026, BAKKEN and CONFIDENTIAL pools.

Cumulative oil484KbblDec ’07 to Aug ’26 · 222 of 225 months known
Peak oil rate353bbl/dJan 2015 · 3,888 bbl in 11 days
Oil, last 12 months11.8Kbbl-5% against the 12 before
Gas–oil ratio, last 12 months813scf/bblfirst year 347 scf/bbl
Water cut, last 12 months59%first year 17% · 247K bbl water in all
Gas sold, last 12 months68%of gas produced · 1,168 mcf reported flared
0200400Oil bbl/d482008201020122014201620182020202220242026

Early time

First reported month
Dec 2007
Months to peak
87 (Feb 2015)
Peak month rate
353 bbl/d on 11 days
First 3 months, oil
—
First 6 months, oil
14,387 bbl (3 of 6 known)
First 12 months, oil
38,774 bbl (9 of 12 known)
First 24 months, oil
80,699 bbl (21 of 24 known)
Share of cumulative in year 1
8%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
48 bbl/d
Latest rate as share of peak
13.7%
Uptime, last 12 months
87% of days
Cumulative gas
331K mcf
Cumulative water
247K bbl
Unknown months
3 of 225 (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
1,1497801,545303867957%
9766851,397313170259%
9586891,266303271957%
1,0908101,544313574359%
1,0267311,423313371258%
9346801,293283372858%
491374648163176257%
0330——100%
4994131,121291782869%
1,6711,4852,813305688963%
1,4921,4782,221314899160%
1,4991,4581,998314897357%

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.