42-479-33783

Final Completion

HEREFORD, L. M.

WEBB County · District 4 · SANCHEZ-O'BRIEN OIL & GAS CORP.

Permits

Max Depth

9,500 ft

First Permit

1983-12-09

Latest Activity

1984-05-04

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

SANCHEZ-O'BRIEN OIL & GAS CORP. 1993-1994→ NORTH CENTRAL OIL CORP. 1996-2005→ POGO PRODUCING COMPANY 2006-2008→ POGO PRODUCING COMPANY LLC 2008-2011→ PLAINS EXPLORATION & PROD. CO. 2011-2012→ OXY USA INC. 2012-2017→ MERIT ENERGY COMPANY 2017-2025

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 506 ft (DF)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
QUEEN CITY	2,130 ft	-1,624 ft
WILCOX	3,710 ft	-3,204 ft
LOWER WILCOX (Wilcox)	6,350 ft	-5,844 ft
LOBO (WILCOX)	7,700 ft	-7,194 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 (5)

Interval	Type
6,649–? ft	Perforated
6,670–6,680 ft	Perforated
6,698–6,702 ft	Perforated
8,009–8,038 ft	Perforated
8,249–8,296 ft	Perforated

Casing (4)

Size	Set Depth	Cement
10.75"	948 ft	535 sx
7.625"	6,471 ft	735 sx
7.625"	6,571 ft	735 sx
4.5"	8,555 ft	300 sx

Permit History (2)

#243473 Drill Final Completion

HEREFORD, L. M. · 9,500 ft

1984-05-04

#223303 Drill

HEREFORD, L. M. · 9,500 ft

1983-12-09

Spud 1983-12-17

Applications (2)

#243473 A SANCHEZ-O'BRIEN OIL & GAS CORP.

received 1984-04-10

#223303 A SANCHEZ-O'BRIEN OIL & GAS CORP.

received 1983-12-09

Records & Logs

3 completion filings on record.

W-2/G-1 1996-10-17

W-2/G-1 1984-04-16

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 WEBB County.

Well Details

Well Number: 16
Max Depth: 9,500 ft
Drill Type: Vertical
County: WEBB
District: 4
Operator: SANCHEZ-O'BRIEN OIL & GAS CORP.

Operator

Name: SANCHEZ-O'BRIEN OIL & GAS CORP
Location: HOUSTON
P-5 Status: Inactive (filed 1997-08-14)
Cum Oil (all leases): 264,031 bbl
Cum Gas (all leases): 270,035,085 mcf
Total Permits: 493