42-501-32697

Final Completion

MAHONEY H. O.

YOAKUM County · District 8 · HILCORP ENERGY COMPANY · WASSON 72

Permits

Max Depth

8,200 ft

First Permit

1984-09-25

Latest Activity

2009-08-20

Lifespan

25 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2007-02-15

Shut-In

—

Plugged

—

EWA / Permit operator mismatch

Scheduling: HILCORP ENERGY COMPANY ≠ Permit: XTO ENERGY INC.

Resolved via: production → HILCORP ENERGY COMPANY

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

MOBIL PRODUCING TX. & N.M. INC. 1993-2004→ XTO ENERGY INC. 2004-2025→ HILCORP ENERGY COMPANY 2025-2026

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Formation Tops (9) Elevation 3,556 ft (KB)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
YATES	3,105 ft	+451 ft
SAN ANDRES	4,520 ft	-964 ft
GLORIETTA (Glorieta)	5,825 ft	-2,269 ft
UPPER CLEARFORK (Clear Fork)	6,565 ft	-3,009 ft
TUBB	7,370 ft	-3,814 ft
LOWER CLEARFORK (Clear Fork)	7,493 ft	-3,937 ft
GLORIETTA (Glorieta)	—	—
SAN ANDRES	—	—
YATES	—	—

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
5,041–5,186 ft	Perforated
6,584–6,886 ft	Perforated
6,584–8,163 ft	Perforated
7,745–7,873 ft	Perforated
7,895–8,054 ft	Perforated
8,070–8,163 ft	Perforated

Casing (2)

Size	Set Depth	Cement
13.375"	468 ft	450 sx
8.625"	5,400 ft	2,500 sx

Permit History (2)

#683421 Recompletion Final Completion

H.O. MAHONEY · 5,700 ft

2009-08-20

Spud 2009-11-30

#252514 Drill Final Completion

MAHONEY, H. O. · 8,200 ft

1984-09-25

Spud 1984-11-13

Applications (3)

#683421 A XTO ENERGY INC.

received 2009-07-23

#252514 A MOBIL PRODUCING TX. & N.M. INC.

received 1984-12-21

#252514 A MOBIL PRODUCING TX. & N.M. INC.

received 1984-09-25

Records & Logs

6 completion filings on record.

W-2/G-1 2010-07-22

W-2/G-1 2007-07-31

W-2/G-1 2007-07-23

W-2/G-1 2004-03-17

W-2/G-1 1985-05-24

W-2/G-1 1985-08-01

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 YOAKUM County.

Well Details

Well Number: 59
Max Depth: 8,200 ft
Drill Type: Vertical
County: YOAKUM
District: 8
Operator: HILCORP ENERGY COMPANY
Completed: 2007-02-15

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