42-391-00281

Final Completion

WILLIAMS MAUDE ETAL -A-

REFUGIO County · District 2 · HILCORP ENERGY COMPANY · LAKE PASTURE (H-440 SAND)

Permits

Max Depth

6,420 ft

First Permit

1980-01-02

Latest Activity

2002-07-05

Lifespan

23 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1980-04-16

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.

Formation Tops (8) Elevation 57 ft

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
LARGARTO (Lagarto)	1,500 ft	-1,443 ft
OAKVILLE	2,750 ft	-2,693 ft
CATAHOULA (MIOCENE) (Catahoula)	3,300 ft	-3,243 ft
ANAHUAC (MIOCENE) (Anahuac)	4,100 ft	-4,043 ft
FRIO-GRETA(OLIGOCENE) (Frio)	4,365 ft	-4,308 ft
MIDDLE FRIO (SINTON) (Frio)	5,000 ft	-4,943 ft
LOWER FRIO (OLIGOCENE) (Frio)	5,880 ft	-5,823 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)

Interval	Type
4,152–4,160 ft	Perforated
4,462–4,470 ft	Perforated
4,513–4,517 ft	Perforated
?–5,557 ft	Perforated
?–5,580 ft	Perforated
?–5,738 ft	Perforated

Casing (3)

Size	Set Depth	Cement
10.75"	1,518 ft	475 sx
2.375"	4,425 ft	—
5.5"	6,036 ft	1,100 sx

Permit History (3)

#521424 Recompletion Final Completion

WILLIAMS, MAUDE ET AL "A" · 6,420 ft

2002-07-05

Spud 2002-06-28

#447602 Recompletion Final Completion

WILLIAMS, MAUDE ET AL "A" · 6,420 ft

1996-05-02

Spud 1996-04-29

#69631 Recompletion Final Completion

WILLIAMS, MAUDE ET AL "A" · 6,036 ft

1980-01-02

Applications (3)

#521424 A HILCORP ENERGY COMPANY

received 2002-06-27

#447602 A QUINTANA PET. CORP.

received 1996-04-29

#69631 A QUINTANA PET. CORP.

received 1980-01-02

Records & Logs

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

W-2/G-1 2002-08-01 log on file

W-2/G-1 2002-08-21

W-2/G-1 1996-05-21 log on file

W-2/G-1 1996-07-09

W-2/G-1 1980-05-05

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: D 18
Max Depth: 6,420 ft
Drill Type: Vertical
County: REFUGIO
District: 2
Operator: HILCORP ENERGY COMPANY
Completed: 1980-04-16

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: 3,439