42-507-31205

Final Completion

PRYOR RANCH

ZAVALA County · District 1 · WINN EXPLORATION/DULCE COMPANY · WINN-DULCE (OLMOS)

Permits

Max Depth

3,500 ft

First Permit

1979-07-25

Latest Activity

1984-09-14

Lifespan

5 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1979-08-16

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: WINN EXPLORATION/DULCE COMPANY ≠ Production: MCDAY ENERGY CORP. (reported 2026-04)

Resolved via: production → MCDAY ENERGY CORP.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

WINN EXPLORATION CO., INC. 1993-1994→ MCDAY ENERGY CORP. 1994-2026

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 (5) Elevation 673 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
ESCONDIDO	1,705 ft	-1,032 ft
OLMOS	2,187 ft	-1,514 ft
DEL MONTE	2,682 ft	-2,009 ft
BRACERO	2,724 ft	-2,051 ft
ELAINE	2,783 ft	-2,110 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
1,810–1,822 ft	Perforated
2,790–2,794 ft	Perforated

Casing (3)

Size	Set Depth	Cement
8.625"	267 ft	150 sx
2.375"	2,269 ft	—
4.5"	2,840 ft	—

Permit History (2)

#251553 Recompletion Final Completion

PRYOR RANCH · 2,875 ft

1984-09-14

#53686 Drill Final Completion

PRYOR RANCH · 3,500 ft

1979-07-25

Spud 1979-07-28

Applications (2)

#251553 A WINN EXPLORATION/DULCE COMPANY

received 1984-09-13

#53686 A SUNDOWN DRILLING CO.

received 1979-07-25

Records & Logs

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

W-2/G-1 1989-01-18

W-2/G-1 1988-04-14 log on file

W-2/G-1 1988-05-06

W-2/G-1 1984-09-13

W-2/G-1 1981-07-22

+1 more filings

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: 16
Max Depth: 3,500 ft
Drill Type: Vertical
County: ZAVALA
District: 1
Operator: WINN EXPLORATION/DULCE COMPANY
Completed: 1979-08-16

Operator

Name: WINN EXPL/DULCE CO
Location: EAGLE PASS
P-5 Status: Inactive (filed 1990-11-02)
Total Permits: 293