42-507-31929

Final Completion

PRYOR RANCH

ZAVALA County · District 1 · MCDAY ENERGY CORP. · WINN-DULCE (ELAINE)

Permits

Max Depth

3,300 ft

First Permit

1983-02-28

Latest Activity

1986-10-10

Lifespan

4 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1984-04-19

Shut-In

—

Plugged

—

EWA / Permit operator mismatch

Scheduling: MCDAY ENERGY CORP. ≠ Permit: WINN EXPLORATION/DULCE COMPANY

Resolved via: scheduling → MCDAY ENERGY CORP.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

originally filed by WINN EXPLORATION/DULCE COMPANY — asset transferred

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 (5) Elevation 638 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
OLMOS	2,533 ft	-1,895 ft
OLMOS LOWER (Olmos)	2,575 ft	-1,937 ft
DEL MONTE	2,955 ft	-2,317 ft
BRACERO	3,006 ft	-2,368 ft
ELAINE	3,088 ft	-2,450 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
2,576–2,582 ft	Perforated
3,098–3,104 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	242 ft	175 sx
4.5"	3,217 ft	740 sx

Permit History (2)

#321459 Recompletion Final Completion

PRYOR RANCH · 3,172 ft

1986-10-10

#188588 Drill Final Completion

PRYOR RANCH · 3,300 ft

1983-02-28

Applications (2)

#321459 A WINN EXPLORATION/DULCE COMPANY

received 1986-10-06

#188588 A WINN EXPLORATION/DULCE COMPANY

received 1983-02-28

Records & Logs

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

W-2/G-1 1986-10-20 log on file

W-2/G-1 1986-11-07

W-2/G-1 1984-08-20

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: 163
Max Depth: 3,300 ft
Drill Type: Vertical
County: ZAVALA
District: 1
Operator: MCDAY ENERGY CORP.
Completed: 1984-04-19

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