← Wells

42-283-31171

Final Completion

UNO MAS -B-

LA SALLE County · District 1 · FIRST ROCK INC. · STRICKHAUSEN (OLMOS TRI-BAR)

Permits

1

Max Depth

8,600 ft

First Permit

1985-09-12

Latest Activity

1985-09-12

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1985-11-15

Shut-In

—

Plugged

2012-08-23

!

EWA / Production operator mismatch

Scheduling: FIRST ROCK INC. ≠ Production: VIRTEX OPERATING COMPANY, INC. (reported 2009-08)

!

EWA / Permit operator mismatch

Scheduling: FIRST ROCK INC. ≠ Permit: PACIFIC SOUTHWEST EXPLORATION CO

Resolved via: scheduling → FIRST ROCK INC.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2023-07

Operator History

Chain of Custody

GEODYNE OPERATING COMPANY 1993-1993→ SAMSON RESOURCES COMPANY 1993-1994→ VIRTEX PETROLEUM COMPANY, INC. 1994-2008→ VIRTEX OPERATING COMPANY, INC. 2008-2009

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 386 ft

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
CARRIZO 2,765 ft-2,379 ft
WILCOX 3,910 ft-3,524 ft
ESCONDIDO 6,210 ft-5,824 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)

IntervalType
8,340–8,356 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"1,210 ft350 sx
4.5"8,415 ft1,875 sx

Permit History (1)

#284628 Drill Final Completion

UNO MAS -B- · 8,600 ft

1985-09-12

Spud 1985-10-18

Applications (1)

#284628 A PACIFIC SOUTHWEST EXPLORATION CO
received 1985-09-12

Records & Logs

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

W-2/G-1 1985-12-04 log on file
W-2/G-1 1985-12-14
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 LA SALLE County.

Well Details

Well Number
1724
Max Depth
8,600 ft
Drill Type
Vertical
County
LA SALLE
District
1
Operator
FIRST ROCK INC.
Completed
1985-11-15

Operator

Location
CORPUS CHRI, ST
P-5 Status
Active (filed 2026-04-06)
Cum Oil (all leases)
1,171,762 bbl
Cum Gas (all leases)
823,441 mcf
Activities
CSGD/P, G/PUR, OPRS/O
Total Permits
68