42-495-32340

PRODUCING Horizontal

KEYSTONE CATTLE CO.

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

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Permits

Max Depth

10,000 ft

First Permit

1990-08-22

Latest Activity

1990-08-22

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

1991-02-06

Shut-In

—

Plugged

—

P-5 Org Status: Delinquent

EWA / Permit operator mismatch

Scheduling: HIGHMARK ENERGY OPERATING LLC ≠ Permit: CHEVRON U. S. A. INC.

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)

#376839 Drill Final Completion

KEYSTONE CATTLE COMPANY · 10,000 ft

1990-08-22

Spud 1990-11-28

#376839 Drill

KEYSTONE CATTLE COMPANY · 9,300 ft

1990-08-22

Permit Applications (2)

#376839 A CHEVRON U. S. A. INC.

received 1990-11-19

#376839 A CHEVRON U. S. A. INC.

received 1990-08-20

Well Details

Well Number: 378H
Max Depth: 10,000 ft
Drill Type: Horizontal
County: WINKLER
District: 8
Operator: HIGHMARK ENERGY OPERATING LLC
Completed: 1991-02-06

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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