42-435-36641

PRODUCING

MAYER 36

SUTTON County · District 7 · UPP OPERATING LLC · FAWCETT (WOLFCAMP)

Permits

Max Depth

8,525 ft

First Permit

2004-01-15

Latest Activity

2013-09-18

Lifespan

10 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

2013-11-12

Shut-In

—

Plugged

—

P-5 Org Status: Active

EWA / Permit operator mismatch

Scheduling: UPP OPERATING LLC ≠ Permit: HIGHMOUNT EXPL & PROD TEXAS LLC

Resolved via: production → UPP OPERATING, LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2004-03

Last Production

2026-07

Operator History

Chain of Custody

DOMINION OKLAHOMA TEXAS E&P, INC 2004-2007→ HIGHMOUNT EXPL & PROD TEXAS LLC 2008-2013→ ENERVEST OPERATING, L.L.C. 2014-2019→ 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.

Formation Tops (5) Elevation 2,241 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
BASE CRETACEOUS (Base Cretaceous (marker))	702 ft	+1,539 ft
LEONARD	1,764 ft	+477 ft
WOLFCAMP	3,468 ft	-1,227 ft
CANYON	6,235 ft	-3,994 ft
STRAWN	7,646 ft	-5,405 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 (2)

Interval	Type
3,498–4,516 ft	Perforated
7,958–8,069 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	1,027 ft	280 sx
4.5"	8,174 ft	630 sx

Permit History (2)

#769749 Recompletion Final Completion

MAYER 36 · 8,500 ft

2013-09-18

Spud 2013-10-15

#540798 Drill Y

MAYER 36 · 8,525 ft

2004-01-15

Spud 2004-02-15

Applications (2)

#769749 A HIGHMOUNT EXPL & PROD TEXAS LLC

received 2013-09-10

#540798 A DOMINION OKLAHOMA TEXAS E&P, INC

received 2004-01-15

Records & Logs

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

W-2/G-1 2016-02-25

W-2/G-1 2004-03-22 log on file

W-2/G-1 2005-01-27

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 SUTTON County.

Well Details

Well Number: 8
Max Depth: 8,525 ft
Drill Type: Vertical
County: SUTTON
District: 7
Operator: UPP OPERATING LLC
Completed: 2013-11-12

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