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42-163-32986

Final Completion Horizontal

TURNHAM #1

FRIO County · District 1 · FIRST ROCK INC. · PEARSALL (AUSTIN CHALK)

Permits

1

Max Depth

10,000 ft

First Permit

1991-01-24

Latest Activity

1991-01-24

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1991-04-08

Shut-In

—

Plugged

2016-07-07

!

EWA / Permit operator mismatch

Scheduling: FIRST ROCK INC. ≠ Permit: PENDRAGON OIL CO.

Resolved via: scheduling → FIRST ROCK INC.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

PENDRAGON OIL CO. 1993-1993→ SANCHEZ-O'BRIEN OIL & GAS CORP. 1993-1994→ ESCOPETA OIL & GAS CORPORATION 1993-1996→ FIRST ROCK, INC. 1994-2012→ GOLDEN CHILD, INC. 1996-1996

Lease Production

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

Oil
production & DCA →
Oil
production & DCA →

Formation Tops (2) Elevation 475 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
ANACACHO 6,488 ft-6,013 ft
AUSTIN CHALK 6,728 ft-6,253 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
6,727–9,776 ftPerforated

Casing (2)

SizeSet DepthCement
10.75"770 ft500 sx
7"6,500 ft280 sx

Permit History (1)

#383823 Drill Final Completion

TURNHAM · 10,000 ft

1991-01-24

Spud 1991-02-28

Applications (1)

#383823 A PENDRAGON OIL CO.
received 1991-01-24

Records & Logs

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

W-2/G-1 1991-05-13 log on file
W-2/G-1 1991-05-13 log on file
W-2/G-1 1991-06-17
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 FRIO County.

Well Details

Well Number
1
Max Depth
10,000 ft
Drill Type
Horizontal
County
FRIO
District
1
Operator
FIRST ROCK INC.
Completed
1991-04-08

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