42-033-31272

Final Completion HorizontalSidetrack

JO-MILL UNIT

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

Permits

Max Depth

9,700 ft

First Permit

1987-03-18

Latest Activity

1997-11-07

Lifespan

11 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1987-05-11

Shut-In

—

Plugged

—

EWA / Permit operator mismatch

Scheduling: JO MILL OIL COMPANY LLC ≠ Permit: TEXACO E & P 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 (5) Elevation 2,594 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
SAN ANDRES	3,100 ft	-506 ft
UPPER SPRABERRY (Spraberry)	6,164 ft	-3,570 ft
LOWER SPRABERRY-ZONE 1 (Spraberry)	7,000 ft	-4,406 ft
LOWER SPRABERRY -ZONE 2 (Spraberry)	7,050 ft	-4,456 ft
LOWER SPRABERRY ZONE 3 (Spraberry)	7,120 ft	-4,526 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
7,120–7,167 ft	Perforated
7,124–9,359 ft	Open hole

Casing (3)

Size	Set Depth	Cement
11.75"	412 ft	400 sx
8.625"	4,198 ft	1,925 sx
5.5"	7,240 ft	1,075 sx

Permit History (2)

#469626 Recompletion Final Completion

JO-MILL UNIT · 9,700 ft

1997-11-07

Spud 1997-11-11

#327716 Drill Final Completion

JO-MILL UNIT · 7,240 ft

1987-03-18

Applications (2)

#469626 A TEXACO E & P INC.

received 1997-11-03

#327716 A TEXACO INC.

received 1987-03-13

Records & Logs

4 completion filings on record · 3 with log images at RRC.

W-2/G-1 1997-12-29 log on file

W-2/G-1 1987-05-27 log on file

W-2/G-1 1987-07-06

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: 4525H
Max Depth: 9,700 ft
Drill Type: Horizontal, Sidetrack
County: BORDEN
District: 8
Operator: JO MILL OIL COMPANY LLC
Completed: 1987-05-11

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