42-219-35601

Final Completion Horizontal

MALLET UNIT

HOCKLEY County · District 8 · HILCORP ENERGY COMPANY · SLAUGHTER

Permits

Max Depth

6,002 ft

First Permit

1990-07-31

Latest Activity

1995-08-14

Lifespan

5 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1991-02-08

Shut-In

—

Plugged

—

EWA / Permit operator mismatch

Scheduling: HILCORP ENERGY COMPANY ≠ Permit: MOBIL PRODUCING TX. & N.M. INC.

Resolved via: production → HILCORP ENERGY COMPANY

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

H-1 Injection Active UIC #000072971 permitted 1999-12-31

Permitted Volume

2,000 bbl/d

Max Pressure

2,200 psi

Injection Interval

4,400–5,346 ft

Injected (12mo)

36,706 bbl

Monthly injected volume (bbl, from H-10 filings through 2025-12-01)

Operator History

Chain of Custody

MOBIL PRODUCING TX. & N.M. INC. 1993-2004→ APACHE CORPORATION 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.

Oil

production & DCA →

Formation Tops (5) Elevation 3,619 ft (KB)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
RED BED / SR	1,100 ft	+2,519 ft
RED BED/SR	1,100 ft	+2,519 ft
YATES	2,600 ft	+1,019 ft
SAN ANDRES	4,237 ft	-618 ft
SAN ANDRES	4,900 ft	-1,281 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 (3)

Interval	Type
4,989–5,003 ft	Perforated
4,989–6,110 ft	Open hole
5,002–5,064 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	530 ft	350 sx
5.5"	5,100 ft	1,300 sx

Permit History (2)

#438919 Recompletion Final Completion

MALLET UNIT · 6,002 ft

1995-08-14

Spud 1995-08-23

#376095 Drill Final Completion

MALLET UNIT · 5,200 ft

1990-07-31

Spud 1991-01-20

Applications (2)

#438919 A MOBIL PRODUCING TX. & N.M. INC.

received 1995-08-14

#376095 A MOBIL PRODUCING TX. & N.M. INC.

received 1990-07-30

Records & Logs

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

W-2/G-1 2023-08-10

W-2/G-1 2022-07-12

W-2/G-1 1995-12-18

W-2/G-1 1991-03-07 log on file

W-2/G-1 1991-03-14

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 HOCKLEY County.

Well Details

Well Number: 158AW
Max Depth: 6,002 ft
Drill Type: Horizontal
County: HOCKLEY
District: 8
Operator: HILCORP ENERGY COMPANY
Completed: 1991-02-08

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: 3,435