42-033-31795

Final Completion Horizontal

JO-MILL UNIT

BORDEN County · District 8 · JO MILL OIL COMPANY LLC · JO-MILL (SPRABERRY)

Permits

Max Depth

9,000 ft

First Permit

2001-10-16

Latest Activity

2006-12-04

Lifespan

5 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2004-01-27

Shut-In

—

Plugged

—

EWA / Permit operator mismatch

Scheduling: JO MILL OIL COMPANY LLC ≠ Permit: CHEVRON U. S. A. INC.

Resolved via: production → JO MILL OIL COMPANY LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

TEXACO E & P INC. 1993-2002→ CHEVRON U. S. A. INC. 2002-2020→ JO MILL OIL COMPANY LLC 2020-2026

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 2,619 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
BASE CLEARFORK (Clear Fork)	6,030 ft	-3,411 ft
BASE OF CLEARFORK (Clear Fork)	6,030 ft	-3,411 ft
MIDDLE SPRABERRY (Spraberry)	6,630 ft	-4,011 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
6,911–8,566 ft	Open hole
7,202–7,239 ft	Perforated

Casing (3)

Size	Set Depth	Cement
11.75"	312 ft	250 sx
8.625"	4,242 ft	1,800 sx
5.5"	7,440 ft	750 sx

Permit History (2)

#629130 Recompletion Final Completion

JO-MILL UNIT · 9,000 ft

2006-12-04

Spud 2007-02-28

#514503 Drill Final Completion

JO-MILL UNIT · 7,440 ft

2001-10-16

Spud 2002-03-27

Applications (2)

#629130 A CHEVRON U. S. A. INC.

received 2006-11-16

#514503 A TEXACO E & P INC.

received 2001-10-16

Records & Logs

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

W-2/G-1 2007-05-17 log on file

W-2/G-1 2004-02-17

W-2/G-1 2002-05-22 log on file

W-2/G-1 2002-07-30

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 BORDEN County.

Well Details

Well Number: 4538H
Max Depth: 9,000 ft
Drill Type: Horizontal
County: BORDEN
District: 8
Operator: JO MILL OIL COMPANY LLC
Completed: 2004-01-27

Operator

Name: JO MILL OIL COMPANY LLC
Location: FORT WORTH
P-5 Status: Active (filed 2025-07-09)
Cum Oil (all leases): 4,349,903 bbl
Cum Gas (all leases): — mcf
Activities: OPRS/O