42-163-32108

Final Completion HorizontalSidetrack

ARROW-HILDEBRAND #4

FRIO County · District 1 · BLACKBRUSH O & G LLC · PEARSALL (AUSTIN CHALK)

Permits

Max Depth

6,900 ft

First Permit

1981-12-28

Latest Activity

1993-04-15

Lifespan

11 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1993-05-20

Shut-In

—

Plugged

2020-10-06

EWA / Production operator mismatch

Scheduling: BLACKBRUSH O & G LLC ≠ Production: EXPRESS OIL AND GAS (reported 1999-11)

EWA / Permit operator mismatch

Scheduling: BLACKBRUSH O & G LLC ≠ Permit: GEMINI EXPLORATION COMPANY

Resolved via: scheduling → BLACKBRUSH O & G LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2021-09

Operator History

Chain of Custody

BARNES, LARRY PETROLEUM, INC. 1993-1993→ GEMINI EXPLORATION COMPANY 1993-1994→ EXPRESS OIL AND GAS 1994-1999

Lease Production

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

Formation Tops (6) Elevation 572 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
ESCONDIDO	3,846 ft	-3,274 ft
OLMOS	5,036 ft	-4,464 ft
SAN MIGUEL	5,502 ft	-4,930 ft
ANACACHO	6,130 ft	-5,558 ft
T. AUSTIN CHALK	6,482 ft	-5,910 ft
AUSTIN CHALK	6,485 ft	-5,913 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 (3)

Interval	Type
6,470–10,857 ft	Perforated
6,485–6,706 ft	Perforated
6,485–6,970 ft	Perforated

Casing (2)

Size	Set Depth	Cement
10.75"	352 ft	350 sx
7"	6,484 ft	980 sx

Permit History (3)

#410751 Recompletion Final Completion

ARROW-HILDEBRAND · 6,800 ft

1993-04-15

Spud 1993-04-14

#377507 Drill Final Completion

HILDEBRAND, IRA · 6,900 ft

1990-09-04

Spud 1990-11-16

#145332 Drill Final Completion

HILDEBRAND, IRA · 6,900 ft

1981-12-28

Spud 1981-10-31

Applications (3)

#410751 A GEMINI EXPLORATION COMPANY

received 1993-04-15

#377507 A BARNES, LARRY PETROLEUM, INC.

received 1990-09-04

#145332 A ENERGY RESOURCES OIL & GAS CORP.

received 1981-12-28

Records & Logs

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

W-2/G-1 1993-09-23 log on file

W-2/G-1 1990-12-27 log on file

W-2/G-1 1985-09-30 log on file

W-2/G-1 1985-11-28

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: 4
Max Depth: 6,900 ft
Drill Type: Horizontal, Sidetrack
County: FRIO
District: 1
Operator: BLACKBRUSH O & G LLC
Completed: 1993-05-20

Operator

Name: BLACKBRUSH O & G, LLC
Location: SAN ANTONIO
P-5 Status: Active (filed 2025-09-16)
Cum Oil (all leases): 14,940,812 bbl
Cum Gas (all leases): 59,004,108 mcf
Activities: GTHS/G, OPRS/G, OPRS/O
Total Permits: 339