42-507-32397

Final Completion Horizontal

LITTLE-BRISCOE-PETTY UNIT

ZAVALA County · District 1 · UNION PACIFIC RESOURCES COMPANY

Permits

Max Depth

10,000 ft

First Permit

1990-12-31

Latest Activity

1992-05-29

Lifespan

1 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

1991-05-29

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2011-01

Operator History

Chain of Custody

UNION PACIFIC RESOURCES COMPANY 1993-1998→ RED BYRD OIL, INC. 1999-2005

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 (3) Elevation 575 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
MIDWAY (TVD) (Midway)	2,466 ft	-1,891 ft
ANACACHO (TVD) (Anacacho)	5,438 ft	-4,863 ft
AUSTIN CHALK (TVD) (Austin Chalk)	5,739 ft	-5,164 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)

Interval	Type
5,425–9,260 ft	Open hole

Casing (2)

Size	Set Depth	Cement
9.625"	738 ft	147 sx
7"	5,425 ft	1,272 sx

Permit History (2)

#399765 Reenter Final Completion

LITTLE-BRISCOE-PETTY UNIT · 10,000 ft

1992-05-29

Spud 1992-06-14

#382879 Drill Plug Dry Hole (P&A)

LITTLE · 7,000 ft

1990-12-31

Spud 1991-01-03

Applications (2)

#399765 A UNION PACIFIC RESOURCES COMPANY

received 1992-05-29

#382879 A ELLSWORTH, H. P. O&G PROPERTIES

received 1990-12-31

Records & Logs

2 completion filings on record.

W-2/G-1 1992-08-14

W-2/G-1 1992-09-15

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: 10,000 ft
Drill Type: Horizontal
County: ZAVALA
District: 1
Operator: UNION PACIFIC RESOURCES COMPANY

Operator

Name: UNION PACIFIC RES CO
Location: FORT WORTH
P-5 Status: Inactive (filed 2000-05-02)
Cum Oil (all leases): 75,300,375 bbl
Cum Gas (all leases): 1,818,873,181 mcf
Total Permits: 5,638