42-461-31616

Final Completion

HALFF -C-

UPTON County · District 7 · APACHE CORPORATION · SPRABERRY (TREND AREA CL. FK.)

Permits

Max Depth

8,000 ft

First Permit

1980-07-30

Latest Activity

1998-03-30

Lifespan

18 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1998-04-19

Shut-In

—

Plugged

2021-04-30

EWA / Permit operator mismatch

Scheduling: APACHE CORPORATION ≠ Permit: TAMARACK PETROLEUM COMPANY, INC.

Resolved via: scheduling → APACHE CORPORATION

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2021-09

Operator History

Chain of Custody

KAISER-FRANCIS OIL COMPANY 1993-1997→ TAMARACK PETROLEUM COMPANY, INC. 1997-2007→ MARINER ENERGY, INC. 2007-2010→ APACHE CORPORATION 2010-2018

Lease Production

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

Formation Tops (4) Elevation 2,649 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
UPPER CLEARFORK (Clear Fork)	5,788 ft	-3,139 ft
LOWER CLEARFORK (Clear Fork)	6,354 ft	-3,705 ft
UPPER SPRABERRY (Spraberry)	6,726 ft	-4,077 ft
LOWER SPRABERRY (Spraberry)	7,658 ft	-5,009 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
5,788–6,354 ft	Perforated
6,726–7,658 ft	Perforated

Casing (3)

Size	Set Depth	Cement
8.625"	472 ft	350 sx
2.375"	7,527 ft	—
4.5"	7,832 ft	900 sx

Permit History (2)

#474769 Recompletion Final Completion

HALFF -C- · 7,850 ft

1998-03-30

Spud 1998-04-14

#88290 Drill Final Completion

HALFF "B" · 8,000 ft

1980-07-30

Spud 1980-08-27

Applications (2)

#474769 A TAMARACK PETROLEUM COMPANY, INC.

received 1998-03-26

#88290 A COQUINA OIL CORPORATION

received 1980-07-30

Records & Logs

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

W-2/G-1 1998-08-20 log on file

W-2/G-1 1998-08-25

W-2/G-1 1980-11-13

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 UPTON County.

Well Details

Well Number: 1
Max Depth: 8,000 ft
Drill Type: Vertical
County: UPTON
District: 7
Operator: APACHE CORPORATION
Completed: 1998-04-19

Operator

Name: APC OPER PARTNERSHIP
Location: HOUSTON
P-5 Status: Active (filed 2025-12-03)
Cum Oil (all leases): 615,928,793 bbl
Cum Gas (all leases): 2,702,742,169 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 9,664