42-135-08349

Final Completion Horizontal

EAST COWDEN GRAYBURG UNIT

ECTOR County · District 8 · ENCORE OPERATING, L.P.

Permits

Max Depth

4,437 ft

First Permit

1998-06-24

Latest Activity

2003-11-19

Lifespan

5 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

CONOCO INC. 1993-2001→ ENCORE OPERATING, L.P. 2002-2010→ QUANTUM RESOURCES MANAGEMENT,LLC 2010-2014→ BREITBURN OPERATING L.P. 2015-2020→ VAQUERO HUNTER INC. 2020-2023→ VAQUERO PERMIAN, LLC 2023-2024→ BASIN OIL & GAS 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 (2) Elevation 3,055 ft

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
BASAL QUEEN (Queen)	4,170 ft	-1,115 ft
GRAYBURG	4,247 ft	-1,192 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 (1)

Interval	Type
4,287–5,950 ft	Perforated

Casing (2)

Size	Set Depth	Cement
10.75"	186 ft	100 sx
7"	4,135 ft	300 sx

Permit History (2)

#537805 Recompletion Final Completion

EAST COWDEN GRAYBURG UNIT · 4,437 ft

2003-11-19

Spud 2003-12-30

#477194 Drill

EAST COWDEN (GRAYBURG) UNIT · 4,425 ft

1998-06-24

Applications (3)

#537805 A ENCORE OPERATING, L.P.

received 2003-10-22

#477194 Withdrawn CONOCO INC.

received 1999-09-07

#477194 A CONOCO INC.

received 1998-06-15

Records & Logs

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

W-2/G-1 2004-01-22 log on file

W-2/G-1 1984-01-12

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 ECTOR County.

Well Details

Well Number: 16
Max Depth: 4,437 ft
Drill Type: Horizontal
County: ECTOR
District: 8
Operator: ENCORE OPERATING, L.P.

Operator

Name: ENCORE OPER, L.P
Location: 00PLANO
P-5 Status: Delinquent (filed 2010-09-08)
Cum Oil (all leases): 9,666,498 bbl
Cum Gas (all leases): 101,620,889 mcf
Total Permits: 615