42-211-31279

PRODUCING

ISAACS -209-

HEMPHILL County · District 10 · MOUNTAINSIDE ENERGY OPERATING L · CANADIAN SW. (GRANITE WASH)

RRC Lookup

Permits

Max Depth

12,200 ft

First Permit

1980-09-29

Latest Activity

1999-12-22

Lifespan

19 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

2000-01-10

Shut-In

—

Plugged

—

P-5 Org Status: Active

EWA / Production operator mismatch

Scheduling: MOUNTAINSIDE ENERGY OPERATING L ≠ Production: HIGHMARK ENERGY OPERATING, LLC (reported 2025-12)

EWA / Permit operator mismatch

Scheduling: MOUNTAINSIDE ENERGY OPERATING L ≠ 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

CHEVRON U. S. A. INC. 1993-2016→ PANTERA ENERGY COMPANY 2016-2021→ HIGHMARK ENERGY OPERATING, LLC 2021-2025

Lease Production

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

Permit History (3)

#489808 Recompletion Final Completion

ISAACS -209- · 10,900 ft

1999-12-22

Spud 1999-12-27

#257775 Recompletion Final Completion

ISAACS 209 · 11,710 ft

1984-11-13

#94888 Drill Final Completion

ISAACS · 12,200 ft

1980-09-29

Spud 1980-10-02

Permit Applications (3)

#489808 A CHEVRON U. S. A. INC.

received 1999-11-23

#257775 A GULF OIL CORP.

received 1984-11-12

#94888 A GULF OIL CORP.

received 1980-09-29

Well Details

Well Number: 3209
Max Depth: 12,200 ft
Drill Type: Vertical
County: HEMPHILL
District: 10
Operator: MOUNTAINSIDE ENERGY OPERATING L
Completed: 2000-01-10

Operator

Name: MOUNTAINSIDE ENERGY OPERATING, L
Location: DALLAS
P-5 Status: Y (filed 2026-01-21)
Activities: OPRS/G, OPRS/O

External Links

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