42-339-30635

PRODUCING

KEYSTONE MILLS CO.

MONTGOMERY County · District 3 · HIGHMARK ENERGY OPERATING LLC · CONROE (MIDDLE WILCOX CONS.)

RRC Lookup

Permits

Max Depth

10,230 ft

First Permit

1984-02-07

Latest Activity

1984-02-07

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

1984-06-02

Shut-In

—

Plugged

—

P-5 Org Status: Delinquent

EWA / Production operator mismatch

Scheduling: HIGHMARK ENERGY OPERATING LLC ≠ Production: DENBURY ONSHORE, LLC (reported 2024-10)

EWA / Permit operator mismatch

Scheduling: HIGHMARK ENERGY OPERATING LLC ≠ Permit: EXXON CORP.

Resolved via: scheduling → 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

EXXON CORP. 1993-2000→ EXXON MOBIL CORPORATION 2000-2006→ WAPITI OPERATING, LLC 2006-2009→ DENBURY ONSHORE, LLC 2010-2024

Lease Production

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

Gas

production & DCA →

Permit History (2)

#228675 Drill Final Completion

KEYSTONE MILLS · 10,230 ft

1984-02-07

#228679 Drill

CONROE FIELD UNIT · 10,230 ft

1984-02-07

Permit Applications (3)

#228679 A EXXON CORP.

received 1984-05-16

#228675 A EXXON CORP.

received 1984-01-23

#228679 A EXXON CORP.

received 1984-01-23

Well Details

Well Number: 43
Max Depth: 10,230 ft
Drill Type: Vertical
County: MONTGOMERY
District: 3
Operator: HIGHMARK ENERGY OPERATING LLC
Completed: 1984-06-02

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

RRC Wellbore Query →