← Wells

42-391-03868

Final Completion

OCONNOR THOMAS -A-

REFUGIO County · District 2 · T-C OIL COMPANY LLC · TOM OCONNOR (5900 SAND)

Permits

1

Max Depth

5,950 ft

First Permit

2017-08-14

Latest Activity

2017-08-14

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

2021-05-18

!

EWA / Production operator mismatch

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

!

EWA / Permit operator mismatch

Scheduling: T-C OIL COMPANY LLC ≠ 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 2008-2008

Lease Production

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

Oil
production & DCA →
Oil
production & DCA →
Oil
production & DCA →

Formation Tops (3) Elevation 49 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
CATAHOULA 3,644 ft-3,595 ft
FRIO 4,430 ft-4,381 ft
JACKSON/YEGUA (Jackson)——

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
✓ 42-391-30315 TOM O'CONNOR (5800'SD)FIELD UNIT · QUINTANA PET. CORP.
0.6 mi
Lagarto 1,500'Oakville 2,750'Catahoula 3,300'Catahoula 3,300'Anahuac 4,100'Frio 4,362'Frio 4,365'Frio 5,000'Frio 5,880'NO CHANGE —
✓ 42-391-32794 TOM O'CONNOR (5800 SD) FLD. UNIT · HILCORP ENERGY COMPANY
0.6 mi
Lagarto 2,750'Oakville 3,300'Catahoula 3,614'Catahoula 4,100'Oakville 4,100'Anahuac 4,365'ANANHUAC 4,365'Frio 4,389'Frio 4,785'Frio 5,400'Frio 8,220'Frio 8,220' +4 more
✓ 42-391-01398 LAMBERT, M.F. · HILCORP ENERGY COMPANY
0.7 mi
Frio 1'SURFACE SAND CLAY 1,500'Lagarto 2,750'Oakville 3,300'Catahoula 4,100'Anahuac 4,365'Frio 4,785'Frio 4,785'Frio 5,400'Frio —
✓ 42-391-01375 TOM O'CONNOR (5800 SD)FIELD UNIT · QUINTANA PET. CORP.
0.7 mi
Lagarto 1,500'Oakville 2,750'Catahoula 3,300'Catahoula 3,300'Oakville 3,600'Anahuac 4,100'Frio 4,365'Frio 4,365'Frio 5,000'Frio 5,880'
✓ 42-391-01433 TOM O'CONNOR (5800 SD) FLD. UNIT · HILCORP ENERGY COMPANY
0.8 mi
Lagarto 2,750'Catahoula 3,627'Oakville 4,100'Anahuac 4,365'Frio 4,400'Frio 5,915'NO CHANGE —Jackson —
✓ 42-391-01364 TOM O'CONNOR (5800'SD)FIELD UNIT · QUINTANA PET. CORP.
0.8 mi
Lagarto 1,500'Oakville 2,750'Catahoula 3,300'Catahoula 3,300'Catahoula 3,300'Anahuac 4,100'Anahuac 4,100'Frio 4,365'Frio 4,365'Frio 4,365'Frio 5,000'5400 5,342' +4 more
✓ 42-391-31923 TOM O'CONNOR (5800'SD)FIELD UNIT · QUINTANA PET. CORP.
0.9 mi
Lagarto 1,500'Oakville 2,750'Catahoula 3,300'Catahoula 3,637'Anahuac 4,100'Frio 4,362'Greta 4,362'Frio 4,365'Frio 4,785'Greta 4,785'Frio 5,000'Frio 5,880' +1 more
✓ 42-391-01388 M. F. LAMBERT · HILCORP ENERGY COMPANY
0.9 mi
Catahoula 3,627'Frio 4,375'TOM O'CONNOR (5200, EAST) 5,159'TOM O'CONNOR (5900 SAND) 5,858'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 (4)

IntervalType
5,544–5,547 ftPerforated
5,902–5,916 ftPerforated
?–5,547 ftPerforated
?–5,916 ftPerforated

Casing (2)

SizeSet DepthCement
10.75"1,057 ft420 sx
7"5,950 ft900 sx

Permit History (1)

#829587 Recompletion Final Completion

TOM O'CONNOR (5800 SD) FLD. UNIT · 5,950 ft

2017-08-14

Applications (1)

#829587 A HILCORP ENERGY COMPANY
received 2017-08-04

Records & Logs

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

W-2/G-1 2019-08-08 log on file
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.

Google Maps → Explorer Map →
Lat 28.323323
Lon -97.178018

Well Details

Well Number
C111
Max Depth
5,950 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