42-251-33412

PRODUCING Horizontal

WILKES

JOHNSON County · District 9 · UPP OPERATING LLC · NEWARK EAST (BARNETT SHALE)

Permits

Max Depth

10,000 ft

First Permit

2008-11-03

Latest Activity

2008-12-17

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2009-03-22

Shut-In

—

Plugged

—

P-5 Org Status: Active

EWA / Permit operator mismatch

Scheduling: UPP OPERATING LLC ≠ Permit: EOG RESOURCES, INC.

Resolved via: production → UPP OPERATING, LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2009-03

Last Production

2026-07

Operator History

Chain of Custody

EOG RESOURCES, INC. 2009-2016→ ENERVEST OPERATING, L.L.C. 2017-2019→ UPP OPERATING, LLC 2019-2026

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Gas

production & DCA →

Formation Tops (6) Elevation 975 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
STRAWN	2,238 ft	-1,263 ft
ATOKA	3,180 ft	-2,205 ft
BEND CONGL (Bend)	5,480 ft	-4,505 ft
HOOD	5,852 ft	-4,877 ft
MARBLE FALLS	6,159 ft	-5,184 ft
BARNETT SAHLE (Barnett)	6,810 ft	-5,835 ft

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Perforations (1)

Interval	Type
7,265–9,965 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	1,248 ft	375 sx
5.5"	10,150 ft	832 sx

Permit History (2)

#674099 Drill Final Completion

WILKES UNIT · 10,000 ft

2008-12-17

Spud 2009-01-18

#674099 Drill

WILKES UNIT · 10,000 ft

2008-11-03

Applications (3)

#674099 Z EOG RESOURCES, INC.

received 2008-12-22

#674099 A EOG RESOURCES, INC.

received 2008-11-19

#674099 A EOG RESOURCES, INC.

received 2008-10-29

Records & Logs

2 completion filings on record · 1 with log images at RRC.

W-2/G-1 2009-07-28 log on file

W-2/G-1 2009-11-10

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in JOHNSON County.

Well Details

Well Number: 4H
Max Depth: 10,000 ft
Drill Type: Horizontal
County: JOHNSON
District: 9
Operator: UPP OPERATING LLC
Completed: 2009-03-22

Operator

Name: UPP OPER, LLC
Location: HOUSTON
P-5 Status: Active (filed 2026-03-06)
Cum Oil (all leases): 293,241 bbl
Cum Gas (all leases): 486,804,996 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/G, OPRS/G, OPRS/O
Total Permits: 33