← Wells

42-391-31811

Final Completion

DENNIS O'CONNOR ET AL -L-

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

Permits

4

Max Depth

4,650 ft

First Permit

1984-10-22

Latest Activity

2021-03-26

Lifespan

36 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.

Gas
production & DCA →
Oil
production & DCA →

Formation Tops (9) Elevation 52 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
LARGARTO (Lagarto)1 ft+51 ft
MIOCENE (Miocene (undifferentiated))2,230 ft-2,178 ft
EOCENE2,410 ft-2,358 ft
MIOCENE (Miocene (undifferentiated))3,020 ft-2,968 ft
CATAHOULA 3,590 ft-3,538 ft
CATAHOULA 3,735 ft-3,683 ft
GRETA 4,375 ft-4,323 ft
GRETA 4,390 ft-4,338 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
0.1 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 —
✓ 42-391-33300 DENNIS O'CONNOR ET AL -L- · T-C OIL COMPANY, LLC
0.2 mi
Miocene (undifferentiated) 2,375'Catahoula 3,640'Greta 4,390'Frio —Jackson —
✓ 42-391-33290 DENNIS O'CONNOR ET AL -L- · T-C OIL COMPANY, LLC
0.2 mi
Jackson 2,890'Catahoula 3,640'Greta 4,400'Frio —
✓ 42-391-31665 O'CONNOR, DENNIS ET AL -L- · T-C OIL COMPANY, LLC
0.2 mi
Lagarto 1'EOCENE 2,240'Miocene (undifferentiated) 2,240'Miocene (undifferentiated) 2,835'CATHOULA 3,600'Catahoula 3,600'Greta 4,385'Lagarto —
✓ 42-391-30423 WILLIAMS, MAUDE ETAL -A- · HILCORP ENERGY COMPANY
0.3 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 —
✓ 42-391-32542 O'CONNOR, DENNIS ET AL -L- · T-C OIL COMPANY, LLC
0.4 mi
Lagarto 1'Miocene (undifferentiated) 2,055'Catahoula 3,604'Greta 4,408'
✓ 42-391-31241 WILLIAMS, MAUDE ETAL -A- · QUINTANA PET. CORP.
0.4 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'
✓ 42-391-32037 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 —

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)

IntervalType
4,382–4,385 ftPerforated
4,392–4,400 ftPerforated
4,406–4,410 ftPerforated
4,440–4,443 ftPerforated
4,464–4,469 ftPerforated
4,495–4,499 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"1,501 ft700 sx
5.5"4,610 ft873 sx

Permit History (4)

#868479 Recompletion Final Completion

DENNIS O'CONNOR ET AL -L- · 4,525 ft

2021-03-26

#515490 Recompletion Final Completion

DENNIS O'CONNOR ET AL -L- · 4,425 ft

2001-11-20

Spud 2001-12-05

#444179 Recompletion

O'CONNOR, DENNIS ET AL "L" · 4,500 ft

1996-01-29

#255296 Drill Final Completion

O'CONNOR, DENNIS ET AL -L- · 4,650 ft

1984-10-22

Spud 1984-10-26

Applications (4)

#868479 A T-C OIL COMPANY, LLC
received 2021-03-18
#515490 A T - C OIL COMPANY
received 2001-11-20
#444179 A T - C OIL COMPANY
received 1996-01-29
#255296 A T - C OIL COMPANY
received 1984-10-18

Records & Logs

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

W-2/G-1 2021-09-17
W-2/G-1 2021-04-07
W-2/G-1 2002-01-02 log on file
W-2/G-1 2002-02-28
W-2/G-1 1984-12-14
W-2/G-1 1985-01-05
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 28.409431
Lon -97.058324

Well Details

Well Number
L 58
Max Depth
4,650 ft
Drill Type
Vertical
County
REFUGIO
District
2
Operator
T-C OIL COMPANY, LLC

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
282