42-445-31311

Final Completion HorizontalSidetrack

PRENTICE NORTHEAST UNIT

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

Permits

Max Depth

6,750 ft

First Permit

1985-04-24

Latest Activity

1999-08-23

Lifespan

14 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2000-01-14

Shut-In

—

Plugged

2011-01-18

EWA / Permit operator mismatch

Scheduling: HIGHMARK ENERGY OPERATING LLC ≠ Permit: CROSS TIMBERS OPERATING COMPANY

Resolved via: production → HIGHMARK ENERGY OPERATING, LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

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 3,535 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
T. RUSTLER ANHYDRITE	2,351 ft	+1,184 ft
T. GLORIETA G-1	5,859 ft	-2,324 ft
T. GLORIETTA G-1	5,859 ft	-2,324 ft
T. CLEARFORK C-1	6,251 ft	-2,716 ft
T. CLEARFORK C-5	6,526 ft	-2,991 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 (3)

Interval	Type
5,870–5,974 ft	Perforated
6,255–6,734 ft	Open hole
6,359–8,374 ft	Perforated

Casing (2)

Size	Set Depth	Cement
9.625"	2,386 ft	900 sx
7"	6,248 ft	1,750 sx

Permit History (2)

#486856 Recompletion Final Completion

PRENTICE NORTHEAST UNIT · 6,719 ft

1999-08-23

Spud 1999-09-12

#273157 Drill Final Completion

PRENTICE NORTHEAST UNIT · 6,750 ft

1985-04-24

Spud 1985-06-02

Applications (2)

#486856 A CROSS TIMBERS OPERATING COMPANY

received 1999-08-23

#273157 A AMOCO PRODUCTION COMPANY

received 1985-04-17

Records & Logs

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

W-2/G-1 2000-02-09 log on file

W-2/G-1 2000-05-25

W-2/G-1 1986-02-04 log on file

W-2/G-1 1985-07-24

W-2/G-1 1985-08-09

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: 181H
Max Depth: 6,750 ft
Drill Type: Horizontal, Sidetrack
County: TERRY
District: 8
Operator: HIGHMARK ENERGY OPERATING LLC
Completed: 2000-01-14

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