BBakken SubsurfaceNorth Dakota well index

NDIC file 29371 · API 33-105-03756-00-00

GRONFUR 3-28H1

Operated by CONTINENTAL RESOURCES, INC. · Williams County, North Dakota

Active (A)Oil and gasSpud 2014

Well facts

Operator
CONTINENTAL RESOURCES, INC.
Status
Active (A)
Well type
Oil and gas (OG)
Field
BROOKLYN
Spud date
Total depth
21,612 ft
Legal location
SWSW Sec 21 T155N R98W
Footages
340 ft FSL · 1,135 ft FWL
County
Williams County
NDIC file no.
29371
API no.
33-105-03756-00-00

Location & navigation

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48.22766, -103.29843

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

138 months reported, Mar 2015 to Aug 2026, BAKKEN and CONFIDENTIAL pools.

Cumulative oil397KbblMar ’15 to Aug ’26 · 136 of 138 months known
Peak oil rate619bbl/dMay 2015 · 19,203 bbl in 31 days
Oil, last 12 months12.2Kbbl-5% against the 12 before
Gas–oil ratio, last 12 months4,430scf/bblfirst year 1,723 scf/bbl
Water cut, last 12 months63%first year 41% · 406K bbl water in all
Gas sold, last 12 months90%of gas produced · 798 mcf reported flared
0250500750Oil bbl/d31201620182020202220242026

Early time

First reported month
Mar 2015
Months to peak
3 (May 2015)
Peak month rate
619 bbl/d on 31 days
First 3 months, oil
19,203 bbl (1 of 3 known)
First 6 months, oil
60,105 bbl (4 of 6 known)
First 12 months, oil
113,448 bbl (10 of 12 known)
First 24 months, oil
171,500 bbl (22 of 24 known)
Share of cumulative in year 1
29%

Today

Last reported month
Aug 2026
Last month with oil
Aug 2026
Latest oil rate
31 bbl/d
Latest rate as share of peak
5.0%
Uptime, last 12 months
99% of days
Cumulative gas
1.04M mcf
Cumulative water
406K bbl
Unknown months
2 of 138 (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
1,0854,8471,74029374,46762%
1,1455,0441,72231374,40560%
9964,5701,48928364,58860%
1,1404,9941,66031374,38159%
1,0934,6241,65531354,23160%
9663,8741,41728344,01059%
1,0744,7491,84331354,42263%
9454,6061,89130324,87467%
1,0234,8391,93231334,73065%
8813,6081,61030294,09565%
8914,4851,97130305,03469%
9673,8331,79231313,96465%

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.