BBakken SubsurfaceNorth Dakota well index

NDIC file 20439 · API 33-105-02139-00-00

THELMA 1-21H

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

Active (A)Oil and gasSpud 2011

Well facts

Operator
Zavanna Energy Operating, LLC
Status
Active (A)
Well type
Oil and gas (OG)
Field
STOCKYARD CREEK
Spud date
Total depth
17,280 ft
Legal location
SESE Sec 21 T154N R99W
Footages
270 ft FSL · 550 ft FEL
County
Williams County
NDIC file no.
20439
API no.
33-105-02139-00-00

Location & navigation

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48.14067, -103.41253

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

171 months reported, Jun 2012 to Aug 2026, BAKKEN pool.

Cumulative oil511KbblJun ’12 to Aug ’26 · 171 of 171 months known
Peak oil rate845bbl/dJun 2013 · 15,204 bbl in 18 days
Oil, last 12 months17.4Kbbl+0% against the 12 before
Gas–oil ratio, last 12 months2,341scf/bblfirst year 1,130 scf/bbl
Water cut, last 12 months48%first year 35% · 375K bbl water in all
Gas sold, last 12 months81%of gas produced · 3,723 mcf reported flared
05001,000Oil bbl/d422014201620182020202220242026

Early time

First reported month
Jun 2012
Months to peak
4 (Sep 2012)
Peak month rate
845 bbl/d on 18 days
First 3 months, oil
44,918 bbl
First 6 months, oil
84,223 bbl
First 12 months, oil
107,790 bbl
First 24 months, oil
194,223 bbl
Share of cumulative in year 1
21%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
42 bbl/d
Latest rate as share of peak
4.9%
Uptime, last 12 months
98% of days
Cumulative gas
790K mcf
Cumulative water
375K bbl
Pools reported
BAKKEN
Last 12 months as a table
MonthOil bblGas mcfWater bblDaysOil bbl/dGOR scf/bblWater cut
1,6523,4471,30930552,08744%
1,7143,8671,21131552,25641%
1,3162,9141,19330442,21448%
1,3722,8461,47031442,07452%
1,6203,3881,47331522,09148%
1,4773,3511,48428532,26950%
1,5283,8141,81131492,49654%
1,2963,0011,06226502,31645%
1,5974,4381,72030532,77952%
1,3043,5301,23229452,70749%
1,2803,0701,19731412,39848%
1,2913,1711,20731422,45648%

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.