42-391-01593

Final Completion

OCONNOR THOMAS -B-

REFUGIO County · District 2 · T - C OIL COMPANY · TOM OCONNOR (5800)

Permits

Max Depth

5,922 ft

First Permit

1996-01-25

Latest Activity

2011-05-20

Lifespan

15 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: T - C OIL COMPANY ≠ Production: HILCORP ENERGY COMPANY (reported 2026-04)

EWA / Permit operator mismatch

Scheduling: T - C OIL COMPANY ≠ Permit: HILCORP ENERGY COMPANY

Resolved via: production → HILCORP ENERGY COMPANY

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

H-1 Injection Cancelled 2002-03-12 UIC #000062961 permitted 1987-06-01

Permitted Volume

10,000 bbl/d

Max Pressure

2,300 psi

Injection Interval

5,808–5,821 ft

Injected (12mo)

—

Operator History

Chain of Custody

COPANO COMPANY 1993-1998→ QUINTANA PET. CORP. 1993-2000→ HILCORP ENERGY COMPANY 2000-2026→ T - C OIL COMPANY 2006-2011→ T-C OIL COMPANY, LLC 2012-2012

Lease Production

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

Formation Tops (8) Elevation 48 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
LARGARTO (Lagarto)	1,500 ft	-1,452 ft
OAKVILLE	2,750 ft	-2,702 ft
CATAHOULA (MIOCENE) (Catahoula)	3,300 ft	-3,252 ft
ANAHUAC (MIOCENE) (Anahuac)	4,100 ft	-4,052 ft
FRIO-GRETA (OLIGOCENE) (Frio)	4,365 ft	-4,317 ft
MIDDLE FRIO (SINTON) (Frio)	5,000 ft	-4,952 ft
LOWER FRIO (OLIGOCENE) (Frio)	5,880 ft	-5,832 ft
NO CHANGE	—	—

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 (5)

Interval	Type
5,409–5,414 ft	Perforated
5,808–5,840 ft	Perforated
5,811–5,824 ft	Perforated
?–5,420 ft	Perforated
?–5,800 ft	Perforated

Casing (5)

Size	Set Depth	Cement
10.75"	1,123 ft	528 sx
10.75"	1,123 ft	528 sx
5"	5,912 ft	500 sx
5"	5,912 ft	500 sx
5"	5,912 ft	528 sx

Permit History (2)

#716770 Recompletion Final Completion

TOM O'CONNOR (5800 SD) FLD. UNIT · 5,922 ft

2011-05-20

Spud 2011-06-19

#443829 Recompletion Final Completion

O'CONNOR, THOMAS "B" · 5,500 ft

1996-01-25

Spud 1996-01-10

Applications (2)

#716770 A HILCORP ENERGY COMPANY

received 2011-05-18

#443829 A COPANO COMPANY

received 1996-01-18

Records & Logs

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

W-2/G-1 2011-07-21

W-2/G-1 2002-02-19

W-2/G-1 1996-02-26 log on file

W-2/G-1 1987-08-12

W-2/G-1 1984-01-12

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 REFUGIO County.

Well Details

Well Number: C213
Max Depth: 5,922 ft
Drill Type: Vertical
County: REFUGIO
District: 2
Operator: T - C OIL COMPANY

Operator

Name: T - C OIL CO
Location: REFUGIO
P-5 Status: Inactive (filed 2011-11-07)
Cum Oil (all leases): 15,292,994 bbl
Cum Gas (all leases): 112,873,669 mcf
Total Permits: 1,009