42-383-32928

Final Completion

HUGHES, ZULETTE

REAGAN County · District 7 · COX, JOHN L.

Permits

Max Depth

10,700 ft

First Permit

1984-01-27

Latest Activity

1994-06-07

Lifespan

10 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-05

Operator History

Chain of Custody

COX, JOHN L. 1993-2003→ JM COX RESOURCES, L.P. 2003-2018→ DE3 OPERATING LLC 2018-2021→ PIONEER NATURAL RES. USA, INC. 2021-2022

Lease Production

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

Formation Tops (13) Elevation 2,542 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
REDBEDS	350 ft	+2,192 ft
UPPER SPRABERRY (Spraberry)	5,680 ft	-3,138 ft
LOWER SPRABERRY (Spraberry)	6,295 ft	-3,753 ft
DEAN	7,110 ft	-4,568 ft
CISCO	9,194 ft	-6,652 ft
CANYON	9,267 ft	-6,725 ft
STRAWN	9,396 ft	-6,854 ft
BEND	9,556 ft	-7,014 ft
WOODFORD	9,766 ft	-7,224 ft
DEVONIAN	9,785 ft	-7,243 ft
FUSSELMAN	10,240 ft	-7,698 ft
SYLVAN	10,273 ft	-7,731 ft
ELLENBURGER	10,326 ft	-7,784 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 (4)

Interval	Type
5,701–5,720 ft	Perforated
6,306–6,688 ft	Perforated
7,145–7,554 ft	Perforated
10,330–10,542 ft	Perforated

Casing (3)

Size	Set Depth	Cement
13.375"	488 ft	750 sx
10.75"	2,920 ft	1,050 sx
5.5"	10,648 ft	2,025 sx

Permit History (4)

#424474 Recompletion Final Completion

HUGHES, ZULETTE · 7,700 ft

1994-06-07

Spud 1994-06-07

#380573 Recompletion

HUGHES, ZULETTE · 10,648 ft

1990-11-05

#300041 Recompletion

HUGHES, ZULETTE · 10,300 ft

1986-03-21

#227635 Drill Final Completion

HUGHES, ZULETTE · 10,700 ft

1984-01-27

Spud 1984-04-08

Applications (4)

#424474 A COX, JOHN L.

received 1994-06-02

#380573 A EXXON CORP.

received 1990-11-02

#300041 A EXXON CORP.

received 1986-03-20

#227635 A EXXON CORP.

received 1984-01-26

Records & Logs

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

W-2/G-1 2025-02-18

W-2/G-1 1994-10-06 log on file

W-2/G-1 1994-10-13

W-2/G-1 1984-06-18

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library 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 REAGAN County.

Well Details

Well Number: 10
Max Depth: 10,700 ft
Drill Type: Vertical
County: REAGAN
District: 7
Operator: COX, JOHN L.

Operator

Name: COX, JOHN L
Location: MIDLAND
P-5 Status: Inactive (filed 2003-03-21)
Cum Oil (all leases): 15,795,687 bbl
Cum Gas (all leases): 2,577,420 mcf
Total Permits: 1,123