42-339-30208

KEYSTONE MILLS

MONTGOMERY County · District 3 · SHELL OIL COMPANY

Permits

Max Depth

10,000 ft

First Permit

1977-07-18

Latest Activity

1977-08-29

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

H-1 Injection Inactive UIC #000121739 permitted 2020-03-03

Permitted Volume

24,500 bbl/d

Max Pressure

1,338 psi

Injection Interval

2,675–5,300 ft

Injected (12mo)

—

Operator History

Chain of Custody

EXXON CORP. 1993-2000→ EXXON MOBIL CORPORATION 2000-2006→ WAPITI OPERATING, LLC 2006-2009→ DENBURY ONSHORE, LLC 2010-2024→ HIGHMARK ENERGY OPERATING, LLC 2024-2026

Lease Production

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

Oil

production & DCA →

Formation Tops (3) Elevation 184 ft (DF)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
UPPER COCKFIELD1	4,793 ft	-4,609 ft
UPPER COCKFIELD 2	4,836 ft	-4,652 ft
YEGUA MAIN CONROE (Yegua)	4,946 ft	-4,762 ft

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Perforations (2)

Interval	Type
4,966–4,982 ft	Perforated
5,015–5,021 ft	Perforated

Casing (3)

Size	Set Depth	Cement
9.625"	1,614 ft	640 sx
2.375"	4,634 ft	—
5.5"	5,155 ft	380 sx

Permit History (2)

#7242 Drill

KEYSTONE MILLS · 5,500 ft

1977-08-29

#3681 Drill Final Completion

MILLS, KEYSTONE · 10,000 ft

1977-07-18

Applications (2)

#7242 A SHELL OIL COMPANY

received 1977-08-29

#3681 A SHELL OIL COMPANY

received 1977-07-18

Records & Logs

2 completion filings on record · 1 with log images at RRC.

W-2/G-1 1986-02-18 log on file

W-2/G-1 1982-07-28

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in MONTGOMERY County.

Well Details

Well Number: 14
Max Depth: 10,000 ft
Drill Type: Vertical
County: MONTGOMERY
District: 3
Operator: SHELL OIL COMPANY

Operator

Name: SHELL WESTERN E&P INC
Location: HOUSTON
P-5 Status: Delinquent (filed 2021-11-04)
Cum Oil (all leases): — bbl
Cum Gas (all leases): — mcf
Activities: GTHS/O
Total Permits: 1,401