← Wells

42-479-35461

Final Completion

SOUTH CALLAGHAN RANCH

WEBB County · District 4 · MOBIL PRODUCING TX. & N.M. INC. · BIG COWBOY (LOBO 1)

Permits

1

Max Depth

9,275 ft

First Permit

1992-06-23

Latest Activity

1992-06-23

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1992-11-03

Shut-In

—

Plugged

—

!

EWA / Production operator mismatch

Scheduling: MOBIL PRODUCING TX. & N.M. INC. ≠ Production: ALDINE OIL AND GAS, LP (reported 2026-04)

Resolved via: production → ALDINE OIL AND GAS, LP

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

MOBIL PRODUCING TX. & N.M. INC. 1993-1998→ MICHAEL PETROLEUM CORPORATION 1998-2001→ CALPINE NATURAL GAS COMPANY 2002-2002→ CALPINE NATURAL GAS COMPANY L.P. 2002-2002→ CALPINE NATURAL GAS L.P. 2002-2005→ ROSETTA RESOURCES OPERATING LP 2006-2012→ PINPOINT ENERGY OPERATING, LLC 2012-2012→ PETROPOINT ENERGY OPERATING, LLC 2012-2014→ WHITE OAK OPERATING COMPANY LLC 2014-2023→ ALDINE OIL AND GAS, LP 2023-2026

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Gas
production & DCA →
Gas
production & DCA →

Formation Tops (3) Elevation 510 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
WILCOX 4,550 ft-4,040 ft
MIDDLE WILCOX (Wilcox)6,300 ft-5,790 ft
LOBO 68,350 ft-7,840 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 (4)

IntervalType
7,391–7,482 ftPerforated
7,647–7,662 ftPerforated
8,377–8,505 ftPerforated
8,377–8,505 ftOpen hole

Casing (3)

SizeSet DepthCement
16"70 ft—
9.625"924 ft355 sx
7"7,077 ft1,007 sx

Permit History (1)

#398901 Drill Final Completion

SOUTH CALLAGHAN RANCH · 9,275 ft

1992-06-23

Spud 1992-08-02

Applications (1)

#398901 A MOBIL PRODUCING TX. & N.M. INC.
received 1992-05-01

Records & Logs

5 completion filings on record · 2 with log images at RRC.

W-2/G-1 1994-08-24
W-2/G-1 1992-12-01 log on file
W-2/G-1 1993-01-08
W-2/G-1 1992-10-09 log on file
W-2/G-1 1992-10-14
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
76
Max Depth
9,275 ft
Drill Type
Vertical
County
WEBB
District
4
Operator
MOBIL PRODUCING TX. & N.M. INC.
Completed
1992-11-03

Operator

Location
SPRING
P-5 Status
Active (filed 2025-06-04)
Cum Oil (all leases)
181,898,111 bbl
Cum Gas (all leases)
1,950,074,148 mcf
Activities
CSGD/G, GTHS/C, GTHS/G
Total Permits
6,763