42-391-01592

Final Completion

OCONNOR THOMAS -B-

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

Permits

Max Depth

5,940 ft

First Permit

1977-09-12

Latest Activity

2011-05-20

Lifespan

34 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

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 (4) Elevation 47 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
CATAHOULA	3,648 ft	-3,601 ft
FRIO	4,384 ft	-4,337 ft
JACKSON/YEGUA (Jackson)	—	—
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 (2)

Interval	Type
5,412–5,416 ft	Perforated
5,815–5,825 ft	Perforated

Casing (7)

Size	Set Depth	Cement
10.75"	1,135 ft	528 sx
5"	1,135 ft	—
5"	4,816 ft	528 sx
2.375"	5,351 ft	—
5"	5,938 ft	528 sx
5"	5,940 ft	528 sx
10.75"	—	—

Permit History (2)

#716767 Recompletion Final Completion

TOM O'CONNOR (5800 SD) FLD. UNIT · 5,940 ft

2011-05-20

Spud 2011-05-19

#7323 Recompletion

O'CONNOR, THOS. "B" · 5,940 ft

1977-09-12

Applications (2)

#716767 A HILCORP ENERGY COMPANY

received 2011-05-18

#7323 A COPANO COMPANY

received 1977-09-12

Records & Logs

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

W-2/G-1 2019-11-21

W-2/G-1 2011-07-01 log on file

W-2/G-1 1978-12-12

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: C212
Max Depth: 5,940 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