42-495-32132

PRODUCING

KEYSTONE CATTLE CO.

WINKLER County · District 8 · HIGHMARK ENERGY OPERATING LLC · FLYING -W-

RRC Lookup

Permits

Max Depth

11,900 ft

First Permit

1987-08-28

Latest Activity

2008-11-26

Lifespan

21 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

1987-12-24

Shut-In

—

Plugged

—

P-5 Org Status: Delinquent

EWA / Permit operator mismatch

Scheduling: HIGHMARK ENERGY OPERATING LLC ≠ Permit: LEGACY RESERVES OPERATING LP

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

PENNZOIL PETROLEUM COMPANY 1993-1995→ PENNZOIL EXPLORATION & PROD. CO. 1995-1999→ PENNZENERGY EXP. & PROD., L.L.C. 1999-2000→ DEVON ENERGY PRODUCTION CO, L.P. 2000-2008→ LEGACY RESERVES OPERATING LP 2008-2023→ 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)

#675476 Recompletion

KEYSTONE CATTLE CO. · 11,850 ft

2008-11-26

#333584 Drill Final Completion

KEYSTONE CATTLE CO. · 11,900 ft

1987-08-28

Spud 1987-04-15

Permit Applications (2)

#675476 A LEGACY RESERVES OPERATING LP

received 2008-11-24

#333584 A CHEVRON U. S. A. INC.

received 1987-07-27

Well Details

Well Number: 376
Max Depth: 11,900 ft
Drill Type: Vertical
County: WINKLER
District: 8
Operator: HIGHMARK ENERGY OPERATING LLC
Completed: 1987-12-24

Operator

Name: HIGHMARK ENGY OPER, LLC
Location: DALLAS
P-5 Status: Y (filed 2025-12-04)
Cum Oil (all leases): 4,103,460 bbl
Cum Gas (all leases): 29,480,638 mcf
Activities: CSGD/G, G/PUR, GTHS/G, OPRS/G, OPRS/O
Total Permits: 15

External Links

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