← Wells

42-391-00840

Final Completion

TOM O'CONNOR (4150 FT. SD.) UNIT

REFUGIO County · District 2 · HILCORP ENERGY COMPANY

Permits

7

Max Depth

5,929 ft

First Permit

1988-03-29

Latest Activity

2010-05-06

Lifespan

22 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

QUINTANA PET. CORP. 1993-2000→ HILCORP ENERGY COMPANY 2000-2026

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

Formation Tops (15) Elevation 55 ft

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
LARGARTO (Lagarto)1,500 ft-1,445 ft
LARGARTO (Lagarto)2,750 ft-2,695 ft
OAKVILLE 2,750 ft-2,695 ft
CATAHOULA (MIOCENE) (Catahoula)3,300 ft-3,245 ft
OAKVILLE 3,300 ft-3,245 ft
ANAHUAC (MIOCENE) (Anahuac)4,100 ft-4,045 ft
CATAHOULA (MIOCENE) (Catahoula)4,100 ft-4,045 ft
ANAHUAC (MIOCENE) (Anahuac)4,365 ft-4,310 ft
FRIO-GRETA (OLIGOCENE) (Frio)4,365 ft-4,310 ft
FRIO-GRETA (Frio)4,785 ft-4,730 ft
MIDDLE FRIO (SINTON) (Frio)5,000 ft-4,945 ft
MIDDLE FRIO (SINTON) (Frio)5,400 ft-5,345 ft
LOWER FRIO (OLIGOCENE) (Frio)5,880 ft-5,825 ft
LOWER FRIO (OLIGOCENE) (Frio)5,929 ft-5,874 ft
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 (6)

IntervalType
4,110–4,122 ftPerforated
5,288–5,310 ftPerforated
5,520–5,530 ftPerforated
5,534–5,537 ftPerforated
5,798–5,808 ftPerforated
5,893–5,898 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"1,034 ft250 sx
5"5,921 ft500 sx

Permit History (7)

#695309 Recompletion Final Completion

TOM O'CONNOR (4150 FT. SD.) UNIT · 5,929 ft

2010-05-06

Spud 2010-05-13

#555560 Recompletion Final Completion

HEARD, CLEMENT · 5,929 ft

2005-01-07

Spud 2007-03-20

#555560 Recompletion

HEARD, CLEMENT · 5,929 ft

2005-01-07

#520485 Recompletion Final Completion

HEARD, CLEMENT · 5,929 ft

2002-06-03

Spud 2002-06-24

#453550 Recompletion Final Completion

TOM O'CONNOR(5800 SAND) FLD UNIT · 5,929 ft

1996-11-05

Spud 1996-07-24

#415499 Recompletion

TOM O'CONNOR(5800 SAND)FLD. UNIT · 5,929 ft

1993-10-07

#342763 Recompletion Final Completion

HEARD, CLEMENT · 5,929 ft

1988-03-29

Applications (7)

#695309 A HILCORP ENERGY COMPANY
received 2010-05-02
#555560 A HILCORP ENERGY COMPANY
received 2006-10-30
#555560 A HILCORP ENERGY COMPANY
received 2004-12-30
#520485 A HILCORP ENERGY COMPANY
received 2002-05-30
#453550 A QUINTANA PET. CORP.
received 1996-10-07
#415499 A QUINTANA PET. CORP.
received 1993-08-30
#342763 A QUINTANA PET. CORP.
received 1988-02-17

Records & Logs

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

W-2/G-1 2010-06-01 log on file
W-2/G-1 2010-07-13
W-2/G-1 2007-04-24 log on file
W-2/G-1 2007-06-12
W-2/G-1 2002-07-16 log on file
W-2/G-1 2002-10-10

+7 more filings

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
W503A
Max Depth
5,929 ft
Drill Type
Vertical
County
REFUGIO
District
2
Operator
HILCORP ENERGY COMPANY

Operator

Location
HOUSTON
P-5 Status
X (filed 2026-03-27)
Cum Oil (all leases)
75,699,281 bbl
Cum Gas (all leases)
1,779,939,645 mcf
Activities
CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits
3,428