42-445-31721

PRODUCING

PRENTICE NORTHEAST UNIT

TERRY County · District 8 · HIGHMARK ENERGY OPERATING LLC · PRENTICE (6700)

Permits

Max Depth

7,100 ft

First Permit

1995-07-17

Latest Activity

2001-08-06

Lifespan

6 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

2015-10-20

Shut-In

—

Plugged

—

P-5 Org Status: Active

EWA / Permit operator mismatch

Scheduling: HIGHMARK ENERGY OPERATING LLC ≠ Permit: XTO ENERGY INC.

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

H-1 Injection Cancelled 2002-06-14 UIC #000086993 permitted 1997-10-28

Permitted Volume

2,500 bbl/d

Max Pressure

2,800 psi

Injection Interval

5,750–7,300 ft

Injected (12mo)

—

Operator History

Chain of Custody

AMOCO PRODUCTION COMPANY 1993-1993→ CROSS TIMBERS OPERATING COMPANY 1994-2001→ XTO ENERGY INC. 2001-2021→ HIGHMARK ENERGY OPERATING, LLC 2022-2026

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 3,543 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
RUSTLER ANHYDRITE (Rustler)	2,426 ft	+1,117 ft
YATES	3,146 ft	+397 ft
SAN ANDRES	4,586 ft	-1,043 ft
GLORIETA	5,877 ft	-2,334 ft
UPPER CLEARFORK (Clear Fork)	6,111 ft	-2,568 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 (5)

Interval	Type
5,927–6,012 ft	Perforated
6,612–6,657 ft	Perforated
6,878–6,975 ft	Perforated
6,878–7,007 ft	Perforated
7,078–7,162 ft	Open hole

Casing (2)

Size	Set Depth	Cement
8.625"	2,439 ft	950 sx
5.5"	7,090 ft	1,250 sx

Permit History (2)

#512153 Drill Final Completion

PRENTICE NORTHEAST UNIT · 7,100 ft

2001-08-06

Spud 2001-08-07

#437766 Drill Final Completion

PRENTICE NORTHEAST UNIT · 7,100 ft

1995-07-17

Spud 1995-08-09

Applications (2)

#512153 A XTO ENERGY INC.

received 2001-08-02

#437766 A CROSS TIMBERS OPERATING COMPANY

received 1995-07-12

Records & Logs

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

W-2/G-1 2016-03-25

W-2/G-1 2016-02-25

W-2/G-1 2016-03-04

W-2/G-1 1998-02-13

W-2/G-1 1995-12-08 log on file

W-2/G-1 1995-12-14

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 TERRY County.

Well Details

Well Number: 666
Max Depth: 7,100 ft
Drill Type: Vertical
County: TERRY
District: 8
Operator: HIGHMARK ENERGY OPERATING LLC
Completed: 2015-10-20

Operator

Name: HIGHMARK ENGY OPER, LLC
Location: HOUSTON
P-5 Status: Active (filed 2026-03-09)
Cum Oil (all leases): 4,551,977 bbl
Cum Gas (all leases): 30,465,409 mcf
Activities: CSGD/G, G/PUR, GTHS/G, OPRS/G, OPRS/O
Total Permits: 15