Cook 21

Oil & Gas Property in Glasscock County, TX

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Property Summary

Key data points for Cook 21

County	Glasscock County, TX
Operator	APACHE CORPORATION
Production Dates	Sep 2010 - May 2026
Total Oil Production	1,239,293 BBLs
Total Gas Production	3,529,765 MCF
Recent Oil Production	859 BBLs in May 2026
Recent Gas Production	5,722 MCF in May 2026
Wells on Property	20

Our Valuation Estimates for Cook 21

ShaleAssessment™

$56,067 *

MarketMultiple™

$140,614 **

* Assessment based on future expected revenue
** Based on a 36 month multiple of average monthly estimated revenue

Based on a decimal interest

Cook 21 Production Graph

Aggregated production of all wells and leases associated with this property

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to oil and gas production for Cook 21
from Sep 2010 to May 2026

Wells on Cook 21

API #	Well Name	Operator	Status	County	Est. Daily Oil Prod.	Est. Daily Gas Prod.	Est. Daily Water Prod.	Latitude	Longitude
API #	Well Name	Operator	Status	County	Est. Daily Oil Prod.	Est. Daily Gas Prod.	Est. Daily Water Prod.	Latitude	Longitude
42-173-33682	COOK 21 1	APACHE CORPORATION	Producing	Glasscock County, TX				31.824006	-101.518103
42-173-33683	COOK 21 2	APACHE CORPORATION	Shut In	Glasscock County, TX				31.824090	-101.527510
42-173-33684	COOK 21 3	APACHE CORPORATION	Shut In	Glasscock County, TX				31.817001	-101.512146
42-173-33685	COOK 21 4	APACHE CORPORATION	Producing	Glasscock County, TX				31.817921	-101.521229
42-173-34296	COOK 21 5	APACHE CORPORATION	Shut In	Glasscock County, TX				31.823014	-101.513948
42-173-34324	COOK 21 6	APACHE CORPORATION	Producing	Glasscock County, TX				31.824470	-101.523134
42-173-34397	COOK 21 7	APACHE CORPORATION	Producing	Glasscock County, TX				31.818966	-101.517121
42-173-34477	COOK 21 9	APACHE CORPORATION	Producing	Glasscock County, TX				31.827077	-101.515173
42-173-34506	COOK 21 8	APACHE CORPORATION	Producing	Glasscock County, TX				31.826051	-101.519217
42-173-34561	COOK 21 11	APACHE CORPORATION	Producing	Glasscock County, TX				31.814213	-101.524468
42-173-34590	COOK 21 12	APACHE CORPORATION	Producing	Glasscock County, TX				31.821479	-101.522302
42-173-34596	COOK 21 13	APACHE CORPORATION	Shut In	Glasscock County, TX				31.814411	-101.520148
42-173-34602	COOK 21 14	APACHE CORPORATION	Producing	Glasscock County, TX				31.816862	-101.525279
42-173-34886	COOK 21 16	APACHE CORPORATION	Producing	Glasscock County, TX				31.815078	-101.515306
42-173-34887	COOK 21 15	APACHE CORPORATION	Shut In	Glasscock County, TX				31.819797	-101.525281
42-173-34934	COOK 21 10	APACHE CORPORATION	Shut In	Glasscock County, TX				31.819324	-101.513477
42-173-34988	COOK 21 17	APACHE CORPORATION	Shut In	Glasscock County, TX				31.821864	-101.518648
42-173-35786	COOK 21 19	APACHE CORPORATION	Producing	Glasscock County, TX				31.820240	-101.519696
42-173-35890	COOK 21 18	APACHE CORPORATION	Producing	Glasscock County, TX				31.822594	-101.524669
42-173-35898	COOK 21 20	APACHE CORPORATION	Producing	Glasscock County, TX				31.817904	-101.515219

Leases included in Cook 21

Lease #	Lease Name	Operator	County	Monthly Oil Prod.	Monthly Gas Prod.
08-40475	COOK 21	APACHE CORPORATION	Glasscock County, TX
08-43182	COOK 21	APACHE CORPORATION	Glasscock County, TX

Nearby Properties

These are the closest 20 properties to the Cook 21 property.

Property Name	Location	Oil Prod.	Gas Prod.	Prod. Period
Adams 26	Glasscock County, TX	578 BBLs	8,450 MCF	May 2026
Arco-Books 8	Glasscock County, TX	25 BBLs	0 MCF	Jun 2026
Bell 22	Glasscock County, TX	144 BBLs	653 MCF	May 2026
Burns 27	Glasscock County, TX	413 BBLs	2,727 MCF	May 2026
Dorado 18	Glasscock County, TX	802 BBLs	3,462 MCF	May 2026
Driver	Glasscock County, TX	8,903 BBLs	1,115 MCF	Jun 2026
E.D.B. 10	Glasscock County, TX	4 BBLs	8 MCF	May 2026
Glass	Glasscock County, TX	1,208 BBLs	5,817 MCF	Jun 2026
Goodner 22	Glasscock County, TX	463 BBLs	2,926 MCF	May 2026
Hoch	Glasscock County, TX	176 BBLs	0 MCF	Jun 2026
Lizardfish 27	Glasscock County, TX	99 BBLs	392 MCF	May 2026
Lpi-Driver	Glasscock County, TX	4,827 BBLs	18,687 MCF	May 2026
Lpi-Hoch	Glasscock County, TX	184 BBLs	808 MCF	May 2026
Lpi-Schwartz	Glasscock County, TX	356 BBLs	2,662 MCF	May 2026
Moc-Seidenberger 29	Glasscock County, TX	1,047 BBLs	0 MCF	Jun 2026
Nix 16	Glasscock County, TX	1,504 BBLs	11,167 MCF	May 2026
Wahoo 20	Glasscock County, TX	81 BBLs	576 MCF	May 2026
Wahoo Books	Glasscock County, TX	18,956 BBLs	34,487 MCF	Jun 2026
Walker	Glasscock County, TX	242 BBLs	3,125 MCF	May 2026
Weaver 23	Glasscock County, TX	441 BBLs	4,823 MCF	May 2026

Companies in the Area

These are the closest 20 companies operating near the Cook 21 property.

Company Name
Amtex Energy, Inc.
Apache Corporation
Burleson Petroleum, Inc.
Coastal Oil & Gas Corp
Conoco Inc
Crescent Energy Operating, LLC
Crownquest Operating, LLC
Fortson Oil Company
Laredo Petroleum, Inc.
Mariner Energy, Inc.
McClure Oil Company, Inc.
Ovintiv USA Inc.
Oxyrock Operating, LLC
Petex
Petroplex Energy Inc.
Rangeland Exploration Company
Tamarack Petroleum Company, Inc.
Tejas Permian Operating, LLC
Vital Energy, Inc.
Wallace Oil & Gas Inc

Frac'ing activity on Cook 21

API #	Well Name	Start Date	End Date	Vertical Depth	Total Water Volume
API #	Well Name	Start Date	End Date	Vertical Depth	Total Water Volume
42-173-33683	Cook 21 2
42-173-33684	Cook 21 3
42-173-33685	Cook 21 4
42-173-34296	Cook 21 5
42-173-34324	Cook 21 6
42-173-34324	Cook 21-6
42-173-34397	Cook 21 7
42-173-34477	Cook 21 9
42-173-34506	Cook 21 #8
42-173-34561	Cook 21 11
42-173-34590	Cook 21 #12
42-173-34596	Cook 21 13
42-173-34602	Cook 21 #14
42-173-34886	Cook 21 #16
42-173-34887	Cook 21 15
42-173-34934	Cook 21 10
42-173-35786	Cook 21 #19
42-173-35786	Cook 21 #19
42-173-35890	Cook 21 #18
42-173-35898	Cook 21 #20

Owners of Cook 21

Royalty Ownership data is obtained from public records

Year	Owner	Property Name	Operator
2026	APACHE CORPORATION WI	COOK 21	APACHE CORPORATION
2026	EDB LTD	COOK 21	APACHE CORPORATION
2026	VOGEL FAMILY LP	COOK 21	APACHE CORPORATION
2026	BROW TINE ROYALTIES LP	COOK 21	APACHE CORPORATION
2026	ALLAR CO	COOK 21	APACHE CORPORATION
2026	SH PERMIAN MINERALS LLC	COOK 21	APACHE CORPORATION
2026	RILEY GLENN JOE ESTATE	COOK 21	APACHE CORPORATION
2026	RILEY RUFUS GLENN ESTATE	COOK 21	APACHE CORPORATION
Displaying 8 of 35 Owners -- Full Ownership Data Available for Subscribers Only

Oil & Gas Sales on Cook 21

Lease #	Lease Name	Reporting Period	Product	Volume	Value	Gross Price	Purchaser	Producer
Lease #	Lease Name	Reporting Period	Product	Oil Volume	Oil Value	Calculated Oil Price	Purchaser	Producer
08-40475	COOK 21	Jun 2026					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Jun 2026					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	May 2026					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	May 2026					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Apr 2026					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Apr 2026					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Mar 2026					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Mar 2026					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Feb 2026					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Feb 2026					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Jan 2026					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Jan 2026					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Dec 2025					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Dec 2025					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Nov 2025					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Nov 2025					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Oct 2025					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Oct 2025					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Sep 2025					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Sep 2025					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Aug 2025					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Aug 2025					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Jul 2025					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Jul 2025					APACHE CORPORATION	APACHE CORPORATION
08-40475	COOK 21	Jun 2025					APACHE CORPORATION	APACHE CORPORATION