42-479-34433

Final Completion

HEREFORD, L. M. "B"

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

Permits

Max Depth

9,500 ft

First Permit

1977-09-14

Latest Activity

1986-10-22

Lifespan

9 yrs

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. 1995-2005→ 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 2017-2026

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 518 ft (DF)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
QUEEN CITY	1,900 ft	-1,382 ft
CARRIZE WILCOX	3,400 ft	-2,882 ft
CARRIZO WILCOX (Carrizo)	3,400 ft	-2,882 ft
LOWER WILCOX (Wilcox)	5,400 ft	-4,882 ft
LOBO	7,218 ft	-6,700 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 (8)

Interval	Type
7,424–7,433 ft	Perforated
7,424–8,005 ft	Perforated
7,437–7,446 ft	Perforated
7,464–7,472 ft	Perforated
7,634–7,650 ft	Perforated
7,666–7,670 ft	Perforated
7,960–7,982 ft	Perforated
7,998–8,005 ft	Perforated

Casing (3)

Size	Set Depth	Cement
10.75"	920 ft	530 sx
7.625"	6,000 ft	410 sx
4.5"	8,495 ft	360 sx

Permit History (2)

#322049 Drill Final Completion

HEREFORD, L. M. "B" · 9,500 ft

1986-10-22

#7511 Drill

HEREFORD, L. M. · 9,000 ft

1977-09-14

Applications (2)

#322049 A SANCHEZ-O'BRIEN OIL & GAS CORP.

received 1986-10-20

#7511 A SANCHEZ-O'BRIEN PETRO. CORP.

received 1977-09-14

Records & Logs

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

W-2/G-1 1997-04-17

W-2/G-1 1987-01-29 log on file

W-2/G-1 1987-02-19

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: 17
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