42-391-32542

O'CONNOR, DENNIS ET AL -L-

REFUGIO County · District 2 · T-C OIL COMPANY, LLC

Permits

Max Depth

4,800 ft

First Permit

2003-09-25

Latest Activity

2022-11-29

Lifespan

19 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

T - C OIL COMPANY 1993-2011→ T-C OIL COMPANY, LLC 2012-2026

Lease Production

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

Formation Tops (4) Elevation 50 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
LAGARTO	1 ft	+49 ft
MIOCENE (Miocene (undifferentiated))	2,055 ft	-2,005 ft
CATAHOULA	3,604 ft	-3,554 ft
GRETA	4,408 ft	-4,358 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 ↗

Offset Well Tops (nearest 8 wells with tops)

What nearby completed wells reported.

Cross-section

✓ 42-391-33290 DENNIS O'CONNOR ET AL -L- · T-C OIL COMPANY, LLC

0.1 mi

Jackson 2,890'Catahoula 3,640'Greta 4,400'Frio —

✓ 42-391-32555 WILLIAMS, MAUDE ETAL -A- · HILCORP ENERGY COMPANY

0.2 mi

Lagarto 1,500'Oakville 2,750'Catahoula 3,110'Catahoula 3,300'Anahuac 4,050'Frio 4,100'Frio 5,000'NO CHANGE —

✓ 42-391-33300 DENNIS O'CONNOR ET AL -L- · T-C OIL COMPANY, LLC

0.3 mi

Miocene (undifferentiated) 2,375'Catahoula 3,640'Greta 4,390'Jackson —Frio —

✓ 42-391-31241 WILLIAMS, MAUDE ETAL -A- · QUINTANA PET. CORP.

0.3 mi

RECENT (WATER SANDS) 1'LAGARTA 1,400'Lagarto 1,400'Oakville 2,800'Catahoula 3,500'ANAGUAC 4,050'Greta 4,300'Frio 4,350'

✓ 42-391-30336 WILLIAMS, MAUDE ETAL -A- · HILCORP ENERGY COMPANY

0.4 mi

Miocene (undifferentiated) 2,252'Catahoula 3,609'Greta 4,362'

✓ 42-391-31811 O'CONNOR, DENNIS ET AL -L- · T-C OIL COMPANY, LLC

0.4 mi

Lagarto 1'Miocene (undifferentiated) 2,230'EOCENE 2,410'Miocene (undifferentiated) 3,020'Catahoula 3,590'Catahoula 3,735'Greta 4,375'Greta 4,390'Lagarto —

✓ 42-391-31813 O'CONNOR, DENNIS ET AL -L- · T-C OIL COMPANY, LLC

0.5 mi

Lagarto 1'Lagarto 1'Miocene (undifferentiated) 2,221'EOCENE 2,630'Miocene (undifferentiated) 3,010'Catahoula 3,650'Catahoula 3,710'Greta 4,370'Greta 4,385'Lagarto —

✓ 42-391-30423 WILLIAMS, MAUDE ETAL -A- · HILCORP ENERGY COMPANY

0.6 mi

Lagarto 1,500'Oakville 2,750'Catahoula 3,300'Catahoula 3,593'Anahuac 4,100'Frio 4,365'Frio 4,375'Frio 5,000'Frio 5,800'NO CHANGE —Jackson —

Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).

Perforations (6)

Interval	Type
4,409–4,412 ft	Perforated
4,416–4,420 ft	Perforated
4,424–4,427 ft	Perforated
4,430–4,436 ft	Perforated
4,468–4,472 ft	Perforated
4,475–4,487 ft	Perforated

Casing (2)

Size	Set Depth	Cement
9.625"	1,559 ft	745 sx
5.5"	4,714 ft	985 sx

Permit History (3)

#885913 Recompletion

O'CONNOR, DENNIS ET AL -L- · 4,475 ft

2022-11-29

#627924 Recompletion Final Completion

O'CONNOR, DENNIS ET AL -L- · 4,475 ft

2006-10-24

Spud 2006-10-09

#536804 Drill Final Completion

DENNIS O'CONNOR ET AL -L- · 4,800 ft

2003-09-25

Spud 2003-12-16

Applications (3)

#885913 A T-C OIL COMPANY, LLC

received 2022-11-21

#627924 A T - C OIL COMPANY

received 2006-10-23

#536804 A T - C OIL COMPANY

received 2003-09-25

Records & Logs

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

W-2/G-1 2006-10-27 log on file

W-2/G-1 2004-01-21 log on file

W-2/G-1 2006-11-21

W-2/G-1 2004-01-30

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.

Google Maps → Explorer Map →

Lat 28.411731

Lon -97.052474

Well Details

Well Number: L 75
Max Depth: 4,800 ft
Drill Type: Vertical
County: REFUGIO
District: 2
Operator: T-C OIL COMPANY, LLC

Operator

Name: T-C OIL CO, LLC
Location: REFUGIO
P-5 Status: Active (filed 2025-12-03)
Cum Oil (all leases): 13,683,333 bbl
Cum Gas (all leases): 22,912,895 mcf
Activities: CSGD/P, G/PUR, OPRS/G, OPRS/O
Total Permits: 282