42-391-01580

Final Completion

TOM OCONNOR (5800 SD) FLD. UNIT

REFUGIO County · District 2 · HILCORP ENERGY COMPANY · TOM OCONNOR (5800)

Permits

Max Depth

5,675 ft

First Permit

1985-07-24

Latest Activity

1986-09-10

Lifespan

1 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1985-05-06

Shut-In

—

Plugged

—

EWA / Permit operator mismatch

Scheduling: HILCORP ENERGY COMPANY ≠ Permit: QUINTANA PET. CORP.

Resolved via: production → HILCORP ENERGY COMPANY

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

W-14 Disposal Cancelled 1990-03-29 UIC #000001984 permitted 1982-08-04

Permitted Volume

—

Max Pressure

—

Injection Interval

3,753–3,781 ft

Injected (12mo)

—

W-14 Disposal Active UIC #000061503 permitted 1987-01-19

Permitted Volume

12,000 bbl/d

Max Pressure

1,000 psi

Injection Interval

3,455–3,480 ft

Injected (12mo)

—

Monthly injected volume (bbl, from H-10 filings through 2025-09-01)

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.

Oil

production & DCA →

Formation Tops (7) Elevation 48 ft

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
LARGARTO (Lagarto)	1,500 ft	-1,452 ft
OAKVILLE	2,750 ft	-2,702 ft
CATAHOULA (MIOCENE) (Catahoula)	3,300 ft	-3,252 ft
ANAHUAC (MIOCENE) (Anahuac)	4,100 ft	-4,052 ft
FRIO-GRETA (OLIGOCENE) (Frio)	4,365 ft	-4,317 ft
MIDDLE FRIO (SINTON) (Frio)	5,000 ft	-4,952 ft
LOWER FRIO (OLIGOCENE) (Frio)	5,675 ft	-5,627 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 ↗

Perforations (1)

Interval	Type
3,455–3,480 ft	Perforated

Casing (2)

Size	Set Depth	Cement
10.75"	1,231 ft	600 sx
7"	5,672 ft	1,005 sx

Permit History (2)

#320245 Recompletion Final Completion

O'CONNOR, THOMAS "A" · 5,675 ft

1986-09-10

#280917 Recompletion U

TOM O'CONNOR (5800'SD)FIELD UNIT · 3,480 ft

1985-07-24

Applications (2)

#320245 A QUINTANA PET. CORP.

received 1986-09-08

#280917 A QUINTANA PET. CORP.

received 1985-07-17

Records & Logs

5 completion filings on record.

W-2/G-1 1987-04-10

W-2/G-1 1987-04-20

W-2/G-1 1986-08-08

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.

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: 2SD
Max Depth: 5,675 ft
Drill Type: Vertical
County: REFUGIO
District: 2
Operator: HILCORP ENERGY COMPANY
Completed: 1985-05-06

Operator

Name: HILCORP ENGY CO
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