42-163-31870

Final Completion Sidetrack

TURNHAM #1

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

Permits

Max Depth

7,500 ft

First Permit

1980-11-07

Latest Activity

1991-11-20

Lifespan

11 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1991-12-18

Shut-In

—

Plugged

2016-07-08

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.

Formation Tops (1) Elevation 472 ft (KB)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
TOP CHALK	6,710 ft	-6,238 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 (2)

Interval	Type
6,773–7,124 ft	Perforated
6,800–7,113 ft	Perforated

Casing (3)

Size	Set Depth	Cement
10.75"	365 ft	350 sx
2.875"	6,310 ft	—
7"	6,658 ft	1,400 sx

Permit History (2)

#393457 Recompletion Final Completion

TURNHAM · 7,500 ft

1991-11-20

Spud 1991-11-14

#98413 Drill Final Completion

TURNHAM-ASTRO NCT-2 · 7,250 ft

1980-11-07

Spud 1980-11-10

Applications (2)

#393457 A PENDRAGON OIL CO.

received 1991-11-14

#98413 A ASTRO PRODUCTION, INC.

received 1980-11-07

Records & Logs

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

W-2/G-1 1992-05-28 log on file

W-2/G-1 1992-06-03

W-2/G-1 1981-04-06

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: 2
Max Depth: 7,500 ft
Drill Type: Sidetrack
County: FRIO
District: 1
Operator: FIRST ROCK INC.
Completed: 1991-12-18

Operator

Name: FIRST ROCK, INC
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