42-339-30690

Final Completion

KEYSTONE MILLS

MONTGOMERY County · District 3 · EXXON CORP. · CONROE SOUTH (WILCOX 9250 A )

Permits

Max Depth

9,625 ft

First Permit

1984-12-05

Latest Activity

1988-01-13

Lifespan

3 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1985-02-19

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: EXXON CORP. ≠ Production: HIGHMARK ENERGY OPERATING, LLC (reported 2026-04)

Resolved via: production → HIGHMARK ENERGY OPERATING, LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

W-14 Disposal Active UIC #000090146 permitted 2000-08-14

Permitted Volume

25,000 bbl/d

Max Pressure

1,200 psi

Injection Interval

2,800–4,050 ft

Injected (12mo)

386,245 bbl

Monthly injected volume (bbl, from H-10 filings through 2026-03-01)

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 (6) Elevation 173 ft (DF)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
U. COCKFIELD	4,825 ft	-4,652 ft
UP. COCKFIELD	4,825 ft	-4,652 ft
UPPER COCKFIELD	4,825 ft	-4,652 ft
MAIN CONROE	4,951 ft	-4,778 ft
WILCOX	7,672 ft	-7,499 ft
WILCOX 9250 (Wilcox)	8,968 ft	-8,795 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 (8)

Interval	Type
3,480–3,512 ft	Perforated
3,690–3,720 ft	Perforated
4,958–4,966 ft	Perforated
4,966–4,971 ft	Perforated
4,970–4,975 ft	Perforated
4,976–4,980 ft	Perforated
5,012–5,031 ft	Perforated
8,966–8,980 ft	Perforated

Casing (7)

Size	Set Depth	Cement
10.75"	1,628 ft	1,040 sx
7.375"	3,943 ft	2,360 sx
7.625"	5,180 ft	2,360 sx
7.875"	5,664 ft	2,360 sx
7.625"	9,123 ft	2,360 sx
7.875"	9,124 ft	2,360 sx
7.625"	9,125 ft	2,360 sx

Permit History (2)

#341307 Recompletion Final Completion

CONROE FIELD UNIT · 9,125 ft

1988-01-13

#259813 Drill Final Completion

KEYSTONE MILLS · 9,625 ft

1984-12-05

Spud 1984-12-08

Applications (2)

#341307 A EXXON CORP.

received 1988-01-12

#259813 A EXXON CORP.

received 1984-11-05

Records & Logs

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

W-2/G-1 2024-04-09

W-2/G-1 2019-02-07

W-2/G-1 2012-07-10

W-2/G-1 2001-05-23

W-2/G-1 1997-04-12

+6 more filings

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: 2118
Max Depth: 9,625 ft
Drill Type: Vertical
County: MONTGOMERY
District: 3
Operator: EXXON CORP.
Completed: 1985-02-19

Operator

Name: YOUNGBLOOD, C. S. III
Location: HOUSTON
P-5 Status: S (filed 1999-03-15)
Cum Oil (all leases): 215,968,885 bbl
Cum Gas (all leases): 2,000,503,710 mcf
Activities: OPRS/O
Total Permits: 19,549