42-173-33682

PRODUCING

COOK 21

GLASSCOCK County · District 8 · APACHE CORPORATION · SPRABERRY (TREND AREA)

Permits

Max Depth

11,000 ft

First Permit

2010-05-27

Latest Activity

2011-05-05

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2017-03-23

Shut-In

—

Plugged

—

P-5 Org Status: Active

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2010-08

Last Production

2026-07

Operator History

Chain of Custody

MARINER ENERGY, INC. 2010-2010→ APACHE CORPORATION 2010-2026

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 (8) Elevation 2,670 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
WOLFCAMP	7,529 ft	-4,859 ft
SPRABERRY (TREND AREA) (Spraberry)	7,564 ft	-4,894 ft
WOLFCAMP	7,564 ft	-4,894 ft
CLINE	9,383 ft	-6,713 ft
STRAWN	9,697 ft	-7,027 ft
GARDEN CITY, NW (STRAWN)	9,727 ft	-7,057 ft
STRAWN	9,727 ft	-7,057 ft
FUSSELMAN	10,550 ft	-7,880 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
7,564–9,138 ft	Perforated
7,564–9,674 ft	Perforated
9,383–9,674 ft	Perforated
9,727–9,961 ft	Perforated
9,727–10,225 ft	Perforated

Casing (2)

Size	Set Depth	Cement
13.375"	587 ft	400 sx
5.5"	10,759 ft	1,650 sx

Permit History (2)

#714757 Recompletion Final Completion

COOK 21 · 10,759 ft

2011-05-05

Spud 2010-06-19

#696641 Drill Final Completion

COOK 21 · 11,000 ft

2010-05-27

Spud 2010-06-19

Applications (2)

#714757 A APACHE CORPORATION

received 2011-04-21

#696641 A MARINER ENERGY, INC.

received 2010-05-26

Records & Logs

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

W-2/G-1 2017-03-28

W-2/G-1 2012-01-18

W-2/G-1 2010-09-24 log on file

W-2/G-1 2011-03-08

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 GLASSCOCK County.

Well Details

Well Number: 1
Max Depth: 11,000 ft
Drill Type: Vertical
County: GLASSCOCK
District: 8
Operator: APACHE CORPORATION
Completed: 2017-03-23

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: 9,708