BBakken SubsurfaceNorth Dakota well index

NDIC file 39320 · API 33-105-05885-00-00

MARILYN 31-33 4H

Operated by DEVON ENERGY WILLISTON, L.L.C. · Williams County, North Dakota

Active (A)Oil and gasSpud 2024

Well facts

Operator
DEVON ENERGY WILLISTON, L.L.C.
Status
Active (A)
Well type
Oil and gas (OG)
Field
PAINTED WOODS
Spud date
Total depth
26,064 ft
Legal location
LOT5 Sec 31 T155N R102W
Footages
1,703 ft FNL · 412 ft FWL
County
Williams County
NDIC file no.
39320
API no.
33-105-05885-00-00

Location & navigation

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48.20760, -103.86166

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

24 months reported, Sep 2024 to Aug 2026, BAKKEN and CONFIDENTIAL pools.

Cumulative oil140KbblSep ’24 to Aug ’26 · 19 of 24 months known
Peak oil rate691bbl/dFeb 2025 · 19,340 bbl in 28 days
Oil, last 12 months59.5Kbbl12 of 12 months known
Gas–oil ratio, last 12 months3,486scf/bblfirst year 1,463 scf/bbl
Water cut, last 12 months77%first year 71% · 402K bbl water in all
Gas sold, last 12 months91%of gas produced · 19K mcf reported flared
0250500750Oil bbl/d87Sep ’24Dec ’24Mar ’25Jun ’25Sep ’25Dec ’25Mar ’26Jun ’26

Early time

First reported month
Sep 2024
Months to peak
6 (Feb 2025)
Peak month rate
691 bbl/d on 28 days
First 3 months, oil
—
First 6 months, oil
19,340 bbl (1 of 6 known)
First 12 months, oil
80,959 bbl (7 of 12 known)
First 24 months, oil
140,481 bbl (19 of 24 known)
Share of cumulative in year 1
58%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
87 bbl/d
Latest rate as share of peak
12.7%
Uptime, last 12 months
93% of days
Cumulative gas
326K mcf
Cumulative water
402K bbl
Unknown months
5 of 24 (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
8,09420,74122,894302702,56374%
7,53321,75422,204312432,88875%
2,5227,99811,498151683,17182%
8,53115,95222,910312751,87073%
6,80524,26520,288312203,56675%
4,97821,38616,689281784,29677%
4,55221,86318,310311474,80380%
4,38518,26616,200301464,16679%
3,65017,16714,659311184,70380%
3,33115,99113,876301114,80181%
3,21713,80213,652301074,29081%
1,9248,2808,69222874,30482%

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.