42-507-32362

Final Completion HorizontalSidetrack

GLASSCOCK A

ZAVALA County · District 1 · MCDAY ENERGY CORP. · PEARSALL (AUSTIN CHALK)

Permits

Max Depth

7,000 ft

First Permit

1990-08-27

Latest Activity

1990-11-06

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1990-11-28

Shut-In

—

Plugged

2008-11-26

EWA / Permit operator mismatch

Scheduling: MCDAY ENERGY CORP. ≠ Permit: WINN EXPLORATION CO., INC.

Resolved via: scheduling → MCDAY ENERGY CORP.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2008-12

Operator History

originally filed by WINN EXPLORATION CO., INC. — asset transferred

Lease Production

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

Oil

production & DCA →

Formation Tops (1) Elevation 693 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
AUSTIN CHALK	5,734 ft	-5,041 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
5,480–9,710 ft	Perforated
5,734–9,685 ft	Perforated

Casing (2)

Size	Set Depth	Cement
10.75"	750 ft	495 sx
7"	5,480 ft	645 sx

Permit History (2)

#380651 Recompletion Final Completion

GLASSCOCK "A" · 7,000 ft

1990-11-06

Spud 1990-11-06

#377116 Drill Final Completion

GLASSCOCK "A" · 7,000 ft

1990-08-27

Spud 1990-08-27

Applications (2)

#380651 A WINN EXPLORATION CO., INC.

received 1990-11-06

#377116 A WINN EXPLORATION CO., INC.

received 1990-08-27

Records & Logs

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

W-2/G-1 1991-03-05 log on file

W-2/G-1 1990-11-02

W-2/G-1 1991-04-10

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 ZAVALA County.

Well Details

Well Number: 1
Max Depth: 7,000 ft
Drill Type: Horizontal, Sidetrack
County: ZAVALA
District: 1
Operator: MCDAY ENERGY CORP.
Completed: 1990-11-28

Operator

Name: MCDAY ENGY CORP
Location: PLANO
P-5 Status: X (filed 2026-06-02)
Cum Oil (all leases): 1,564,984 bbl
Cum Gas (all leases): 1,473,807 mcf
Activities: OPRS/G, OPRS/O
Total Permits: 52