42-003-05463

Final Completion

SHAFTER LAKE /WOLFCAMP/ UNIT

ANDREWS County · District 8 · ARCO OIL & GAS CO. · SHAFTER LAKE (WOLFCAMP)

RRC Lookup

Permits

Max Depth

11,900 ft

First Permit

1987-04-07

Latest Activity

1989-09-12

Lifespan

2 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: ARCO OIL & GAS CO. ≠ Production: HIGHMARK ENERGY OPERATING, LLC (reported 2025-12)

Resolved via: production → HIGHMARK ENERGY OPERATING, LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-03

Operator History

Chain of Custody

HENRY PETROLEUM CORP. 1993-2001→ HENRY PETROLEUM LP 2001-2008→ COG OPERATING LLC 2009-2012→ LEGACY RESERVES OPERATING LP 2013-2020→ HIGHMARK ENERGY OPERATING, LLC 2023-2025

Lease Production

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

Oil

production & DCA →

Permit History (2)

#362867 Recompletion Final Completion

UNIV.NOS.#141A,#155F,#173J,#174K · 11,900 ft

1989-09-12

#328416 Recompletion Final Completion

SKELLY UNIVERSITY "173" · 11,900 ft

1987-04-07

Permit Applications (2)

#362867 A ARCO OIL & GAS CO.

received 1989-08-17

#328416 A ARCO OIL & GAS CO.

received 1987-03-30

Well Details

Well Number: J 8
Max Depth: 11,900 ft
Drill Type: Vertical
County: ANDREWS
District: 8
Operator: ARCO OIL & GAS CO.

Operator

Name: ARCO OIL & GAS CO.-SILSBEE
Location: PLANO
P-5 Status: Y (filed 2005-10-07)
Cum Oil (all leases): 16,679,531 bbl
Cum Gas (all leases): 57,198,899 mcf
Total Permits: 3,065

External Links

RRC Wellbore Query →