← Wells

42-391-31665

Final Completion

OCONNOR DENNIS ETAL -L-

REFUGIO County · District 2 · T-C OIL COMPANY LLC · LAKE PASTURE (H-440 SAND)

Permits

3

Max Depth

4,650 ft

First Permit

1983-09-22

Latest Activity

2021-03-09

Lifespan

37 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1984-01-25

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.

Gas
production & DCA →
Oil
production & DCA →

Formation Tops (8) Elevation 52 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
LAGARTO 1 ft+51 ft
EOCENE2,240 ft-2,188 ft
MIOCENE (Miocene (undifferentiated))2,240 ft-2,188 ft
MIOCENE (Miocene (undifferentiated))2,835 ft-2,783 ft
CATAHOULA 3,600 ft-3,548 ft
CATHOULA3,600 ft-3,548 ft
GRETA 4,385 ft-4,333 ft
LAGARTO ——

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
✓ 42-391-31813 O'CONNOR, DENNIS ET AL -L- · T-C OIL COMPANY, LLC
0.2 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 —
✓ 42-391-31811 O'CONNOR, DENNIS ET AL -L- · T-C OIL COMPANY, LLC
0.2 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 —
✓ 42-391-33300 DENNIS O'CONNOR ET AL -L- · T-C OIL COMPANY, LLC
0.4 mi
Miocene (undifferentiated) 2,375'Catahoula 3,640'Greta 4,390'Frio —Jackson —
✓ 42-391-33296 DENNIS O'CONNOR ET AL -L- · T-C OIL COMPANY, LLC
0.4 mi
Miocene (undifferentiated) 2,400'Catahoula 3,720'Greta 4,390'Jackson —Frio —
✓ 42-391-32037 WILLIAMS, MAUDE ETAL -A- · QUINTANA PET. CORP.
0.4 mi
Lagarto 1,500'Lagarto 1,500'Oakville 2,750'Catahoula 3,300'Catahoula 3,662'Anahuac 4,100'Frio 4,353'Frio 4,365'Frio 5,000'Frio 5,880'Jackson —
✓ 42-391-30423 WILLIAMS, MAUDE ETAL -A- · HILCORP ENERGY COMPANY
0.4 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'Jackson —NO CHANGE —
✓ 42-391-33290 DENNIS O'CONNOR ET AL -L- · T-C OIL COMPANY, LLC
0.5 mi
Jackson 2,890'Catahoula 3,640'Greta 4,400'Frio —
✓ 42-391-03783 WILLIAMS, MAUDE ET AL 'A' · QUINTANA PET. CORP.
0.5 mi
Lagarto 1,500'Oakville 2,750'Lagarto 2,750'Catahoula 3,300'Catahoula 3,656'Anahuac 4,100'Anahuac 4,100'Oakville 4,100'Frio 4,345'Frio 4,365'Frio 4,365'Anahuac 4,365' +7 more

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 (5)

IntervalType
4,392–4,398 ftPerforated
4,402–4,407 ftPerforated
4,414–4,419 ftPerforated
4,468–4,473 ftPerforated
4,510–4,515 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"1,520 ft631 sx
5.5"4,612 ft964 sx

Permit History (3)

#868082 Recompletion Final Completion

O'CONNOR, DENNIS ET AL -L- · 4,500 ft

2021-03-09

Spud 2021-02-11

#627066 Recompletion Final Completion

O'CONNOR, DENNIS ET AL -L- · 4,510 ft

2006-10-05

#216551 Drill Final Completion

O'CONNOR, DENNIS ET AL -L- · 4,650 ft

1983-09-22

Spud 1984-01-09

Applications (3)

#868082 A T-C OIL COMPANY, LLC
received 2021-03-03
#627066 A T - C OIL COMPANY
received 2006-10-05
#216551 A T - C OIL COMPANY
received 1983-08-11

Records & Logs

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

W-2/G-1 2021-03-18
W-2/G-1 2006-10-30 log on file
W-2/G-1 2006-11-21
W-2/G-1 1984-02-09
W-2/G-1 1984-02-09
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 28.406732
Lon -97.061016

Well Details

Well Number
L 56
Max Depth
4,650 ft
Drill Type
Vertical
County
REFUGIO
District
2
Operator
T-C OIL COMPANY LLC
Completed
1984-01-25

Operator

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
283