← Wells

42-137-30899

PRODUCING

MAYFIELD RANCH A

EDWARDS County · District 7 · UPP OPERATING LLC · M. M. W. (CANYON)

Permits

1

Max Depth

4,625 ft

First Permit

1985-01-18

Latest Activity

1985-01-18

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

1985-02-19

Shut-In

—

Plugged

—

P-5 Org Status: Active

!

EWA / Permit operator mismatch

Scheduling: UPP OPERATING LLC ≠ Permit: STATEX PETROLEUM INC.

Resolved via: production → UPP OPERATING, LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

GRAHAM ROYALTY, LTD. 1993-1993→ DREYFUS, LOUIS NATURAL GAS CORP 1993-2001→ DOMINION OKLAHOMA TEXAS E&P, INC 2001-2007→ HIGHMOUNT EXPL & PROD TEXAS LLC 2008-2014→ 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.

Gas
production & DCA →

Formation Tops (4) Elevation 2,245 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
BASE CRETACEOUS (Base Cretaceous (marker))935 ft+1,310 ft
CISCO 2,354 ft-109 ft
CANYON 2,930 ft-685 ft
STRAWN LS (Strawn)4,603 ft-2,358 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)

IntervalType
2,933–3,029 ftPerforated

Casing (2)

SizeSet DepthCement
8.625"1,311 ft800 sx
4.5"3,354 ft564 sx

Permit History (1)

#264581 Drill Final Completion

MAYFIELD RANCH "A" · 4,625 ft

1985-01-18

Applications (1)

#264581 A STATEX PETROLEUM INC.
received 1985-01-18

Records & Logs

2 completion filings on record.

W-2/G-1 1985-03-28
W-2/G-1 1985-04-04
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 EDWARDS County.

Well Details

Well Number
81
Max Depth
4,625 ft
Drill Type
Vertical
County
EDWARDS
District
7
Operator
UPP OPERATING LLC
Completed
1985-02-19

Operator

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