BBakken SubsurfaceNorth Dakota well index

NDIC file 41072 · API 33-105-06313-00-00

Olympia 36-25 4TFH

Operated by Zavanna Energy Operating, LLC · Williams County, North Dakota

Active (A)Oil and gasSpud 2024

Well facts

Operator
Zavanna Energy Operating, LLC
Status
Active (A)
Well type
Oil and gas (OG)
Field
EPPING
Spud date
Total depth
21,610 ft
Legal location
SESW Sec 36 T155N R99W
Footages
250 ft FSL · 1,677 ft FWL
County
Williams County
NDIC file no.
41072
API no.
33-105-06313-00-00

Location & navigation

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48.19856, -103.35999

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

16 months reported, May 2025 to Aug 2026, BAKKEN and CONFIDENTIAL pools.

Cumulative oil181KbblMay ’25 to Aug ’26 · 13 of 16 months known
Peak oil rate951bbl/dSep 2025 · 28,536 bbl in 30 days
Oil, last 12 months152Kbbl12 of 12 months known
Gas–oil ratio, last 12 months2,767scf/bblfirst year 2,291 scf/bbl
Water cut, last 12 months59%first year 57% · 253K bbl water in all
Gas sold, last 12 months93%of gas produced · 27.5K mcf reported flared
05001,000Oil bbl/d157May ’25Jul ’25Sep ’25Nov ’25Jan ’26Mar ’26May ’26Jul ’26

Early time

First reported month
May 2025
Months to peak
5 (Sep 2025)
Peak month rate
951 bbl/d on 30 days
First 3 months, oil
—
First 6 months, oil
82,348 bbl (3 of 6 known)
First 12 months, oil
157,720 bbl (9 of 12 known)
Share of cumulative in year 1
87%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
157 bbl/d
Latest rate as share of peak
16.5%
Uptime, last 12 months
100% of days
Cumulative gas
469K mcf
Cumulative water
253K bbl
Unknown months
3 of 16 (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
28,53651,07634,787309511,79055%
25,65648,32832,925318281,88456%
18,90536,92422,804306301,95355%
16,34848,00520,740315272,93656%
12,96047,74719,689314183,68460%
9,97724,97114,738283562,50360%
9,26229,19413,622312993,15260%
7,92027,69914,421302643,49765%
6,08033,45811,412311965,50365%
5,56124,87812,856301854,47470%
6,41227,46911,528312074,28464%
4,88022,23610,818311574,55769%

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.