42-391-31920

INJECTION

TOM O CONNOR(5600 FOOT SAND)UNIT

REFUGIO County · District 2 · HILCORP ENERGY COMPANY · TOM O CONNOR (5600 FOOT SAND)

Permits

Max Depth

6,011 ft

First Permit

1986-05-21

Latest Activity

2012-04-16

Lifespan

26 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

2019-03-21

Shut-In

—

Plugged

—

P-5 Org Status: X

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

H-1 Injection Active UIC #000105221 permitted 2012-12-13

Permitted Volume

10,000 bbl/d

Max Pressure

2,000 psi

Injection Interval

5,175–5,605 ft

Injected (12mo)

603,733 bbl

Monthly injected volume (bbl, from H-10 filings through 2025-11-01)

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 (11) Elevation 56 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
LARGARTO (Lagarto)	1,500 ft	-1,444 ft
OAKVILLE	2,750 ft	-2,694 ft
CATAHOULA (MIOCENE) (Catahoula)	3,300 ft	-3,244 ft
CATAHOULA	3,575 ft	-3,519 ft
ANAHUAC (MIOCENE) (Anahuac)	4,100 ft	-4,044 ft
FRIO	4,338 ft	-4,282 ft
FRIO-GRETA (OLIGOCENE) (Frio)	4,365 ft	-4,309 ft
MIDDLE FRIO (SINTON) (Frio)	5,000 ft	-4,944 ft
FRIO	5,500 ft	-5,444 ft
LOWER FRIO (OLIGOCENE) (Frio)	5,880 ft	-5,824 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 (2)

Interval	Type
5,593–5,604 ft	Perforated
5,770–5,782 ft	Perforated

Casing (3)

Size	Set Depth	Cement
9.625"	1,498 ft	618 sx
5.5"	6,007 ft	1,258 sx
5.5"	6,008 ft	1,258 sx

Permit History (2)

#737266 Recompletion Final Completion

TOM O'CONNOR(5600 FOOT SAND)UNIT · 6,011 ft

2012-04-16

Spud 2012-07-16

#302323 Drill Final Completion

TOM O'CONNOR (5800'SD)FIELD UNIT · 6,000 ft

1986-05-21

Spud 1986-06-11

Applications (2)

#737266 A HILCORP ENERGY COMPANY

received 2012-03-30

#302323 A QUINTANA PET. CORP.

received 1986-05-12

Records & Logs

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

W-2/G-1 2019-03-28

W-2/G-1 2013-03-18

W-2/G-1 1986-07-18 log on file

W-2/G-1 1986-07-25

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: 3111WB
Max Depth: 6,011 ft
Drill Type: Vertical
County: REFUGIO
District: 2
Operator: HILCORP ENERGY COMPANY
Completed: 2019-03-21

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