42-391-00482

Final Completion

TOM OCONNOR (5800 SD) FLD. UNIT

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

Permits

Max Depth

5,914 ft

First Permit

1979-03-20

Latest Activity

2017-03-24

Lifespan

38 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1987-11-13

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

W-14 Disposal Active UIC #000001990 permitted 1979-04-03

Permitted Volume

5,000 bbl/d

Max Pressure

1,000 psi

Injection Interval

3,385–3,429 ft

Injected (12mo)

78,974 bbl

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.

Formation Tops (12) Elevation 55 ft

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
LARGARTO (Lagarto)	1,500 ft	-1,445 ft
LARGARTA (Lagarto)	1,563 ft	-1,508 ft
OAKVILLE	2,621 ft	-2,566 ft
OAKVILLE	2,750 ft	-2,695 ft
CATAHOULA (MIOCENE) (Catahoula)	3,300 ft	-3,245 ft
CATAHOULA	3,620 ft	-3,565 ft
ANAHUAC (MIOCENE) (Anahuac)	4,100 ft	-4,045 ft
FRIO-GRETA (OLIGOCENE) (Frio)	4,365 ft	-4,310 ft
FRIO	4,397 ft	-4,342 ft
MIDDLE FRIO (SINTON) (Frio)	5,000 ft	-4,945 ft
LOWER FRIO (OLIGOCENE) (Frio)	5,880 ft	-5,825 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 ↗

Perforations (3)

Interval	Type
3,385–3,410 ft	Perforated
3,385–3,429 ft	Perforated
3,412–3,429 ft	Perforated

Casing (3)

Size	Set Depth	Cement
9.625"	1,096 ft	350 sx
2.875"	3,429 ft	—
5.5"	5,914 ft	500 sx

Permit History (2)

#824406 Recompletion Final Completion

MAUDE WILLIAMS ET AL 'A' · 5,914 ft

2017-03-24

Spud 1948-02-16

#44670 Recompletion Final Completion

O'CONNOR,TOM(5800 SAND)FLD UNIT · 5,914 ft

1979-03-20

Applications (2)

#824406 A HILCORP ENERGY COMPANY

received 2017-03-13

#44670 A QUINTANA PET. CORP.

received 1979-03-20

Records & Logs

5 completion filings on record.

W-2/G-1 2018-11-13

W-2/G-1 2019-05-30

W-2/G-1 1987-04-17

W-2/G-1 1980-01-11

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: 53
Max Depth: 5,914 ft
Drill Type: Vertical
County: REFUGIO
District: 2
Operator: HILCORP ENERGY COMPANY
Completed: 1987-11-13

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: 3,436