Skip to content
Royalty Clerk

Texas oil lease

Producing

COOK 21

Cook 21 is an oil lease in Glasscock County, Texas, operated by Apache Corporation in the Spraberry (Trend Area) field.

20 wells

11,469bbl oil, last 12 months−2% vs prior year
Operator
Apache Corporation
County
Glasscock County
Field
Spraberry (Trend Area)
RRC lease
08-40475

Is your check right?

Check my statement

Where it sits

This county

Glasscock CountyGlasscockMitchellMartinSterlingMidlandHowardGlasscock County
Glasscock County
Gas, last 12 months
69,844 mcf
Oil in Jul 2026
538 bbl

Production by month

Oil output held steady over the last 12 months

Jun 2026 was not reported.

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output held steady over the last 12 monthsMonthly oil production and gas for COOK 21, Aug 2023 to Jul 2026. Oil output held steady over the last 12 months. 10,577 bbl in the 12 months through Jul 2026, against 10,777 bbl in the 12 months before.Last 12 months: 10,577 bblbbl per monthmcf per month005002,5001,0005,0001,5007,5002,00010kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output held steady over the last 12 monthsMonthly oil production and gas for COOK 21, Aug 2023 to Jul 2026. Oil output held steady over the last 12 months. 10,577 bbl in the 12 months through Jul 2026, against 10,777 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005002,5001,0005,0001,5007,5002,00010kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

98% of the gas went to a processing plant in the last 12 months

Flaring peaked at 8.8% of the gas in Apr 2026.

  • Processing plant (3)
  • Transmission line (2)
  • Lease fuel (1)
  • Flared (4)
98% of the gas went to a processing plant in the last 12 monthsShare of COOK 21 gas by disposition code each month, Aug 2023 to Jul 2026. 98% of the gas went to a processing plant in the last 12 months. Flaring peaked at 8.8% of the gas in Apr 2026.Share of the lease’s gas by disposition code, per month0%50%100%Flared 8.8%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
98% of the gas went to a processing plant in the last 12 monthsShare of COOK 21 gas by disposition code each month, Aug 2023 to Jul 2026. 98% of the gas went to a processing plant in the last 12 months. Flaring peaked at 8.8% of the gas in Apr 2026.Share of gas by disposition code0%50%100%Flared 8.8%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    98% · 68,791 mcf

  • Flared (4)

    1.1% · 796 mcf

  • Transmission line (2)

    0.4% · 257 mcf

1.1% of the gas flared in the last 12 months. 3 months above 3%.

20 wells on this lease

Wells on COOK 21
API numberWell no.Status
42-173-336821Active
42-173-336832Shut-in
42-173-336843Shut-in
42-173-336854Active
42-173-342965Shut-in
42-173-343246Active
42-173-343977Active
42-173-344779Active
42-173-345068Active
42-173-3456111Active
42-173-3459012Active
42-173-3459613Shut-in
42-173-3460214Active
42-173-3488616Active
42-173-3488715Shut-in
42-173-3493410Shut-in
42-173-3498817Shut-in
42-173-3578619Active
42-173-3589018Active
42-173-3589820Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Medallion Operating Company, LLCOilGathers100Mar 1, 2025–
Enlink Gas Marketing, LPCasinghead gasBuys100Mar 1, 2025–
Apache CorporationCasinghead gasGathers100Mar 1, 2025–
Targa Pl Mid-Cont Westtex LLCCasinghead gasGathers100Oct 1, 2015Mar 1, 2025
Apache CorporationCasinghead gasBuys50Mar 1, 2012Mar 1, 2025
Targa Pl Mid-Cont Westtex LLCCasinghead gasBuys50Nov 1, 2015Mar 1, 2025
Energy Trans Crude Marketing LLCOilGathers25Jul 1, 2021Mar 1, 2025
Energy Transfer Marketing & TermOilGathers25Dec 1, 2022Mar 1, 2025
Plains Marketing, L.p.OilGathers50Mar 1, 2012Mar 1, 2025

SourceRailroad Commission Form P-4 file, Sep 24, 2026 (source).

Who buys my oilOil price check

639 acres on the newest permit

20 wells are listed on this lease

Permits for Cook 21
API numberWell no.Acreson the permit
42-173-3498817639
42-173-3589820639
42-173-3589018639
42-173-3578619639
42-173-3493410639
42-173-3488715639
42-173-3488616639
42-173-3459012639
42-173-3460214639
42-173-3459613639
42-173-3456111639
42-173-345068640

SourceRailroad Commission drilling permits, Sep 26, 2026 (source 1, source 2).

Unit decimal checker

What APA Corporation told investors it received

Apache Corporation is linked to APA Corporation (APA).
Realized prices reported by APA Corporation
QuarterOil$ per bblFiling
Q2 2026$98.24SEC filing
Q1 2026$78.69SEC filing
Q4 2025$61.03SEC filing
Q3 2025$67.43SEC filing
Q2 2025$65.58SEC filing
Q1 2025$73.73SEC filing

SourceAPA Corporation quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

36 months, newest first

Ledger for COOK 21
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20265385354,7914,7910$80.46$2.89
Jun 2026No report filed–––––$84.81$3.15
May 20268598535,7225,7220$102.13$2.94
Apr 20267047024,6824,268414$100.32$2.77
Mar 20267207235,0454,695350$91.38$3.04
Feb 20267927963,8963,8960$64.51$3.62
Jan 20261,0991,0966,2606,2600$60.04$7.72
Dec 20251,1071,1075,7985,7980$57.97$4.26
Nov 20251,2171,2155,4635,43132$60.06$3.79
Oct 20251,0421,0406,8786,8780$60.89$3.19
Sep 20251,2361,2376,8286,8280$63.96$2.97
Aug 20251,2631,2576,8596,8590$64.86$2.91
Jul 20258928907,6227,6220$68.39$3.20
Jun 20256396375,7615,7592$68.17$3.02
May 20252862913,4263,206220$62.17$3.12
Apr 20258648825,8955,8950$63.54$3.42
Mar 20257507256,6116,6110$68.24$4.12
Feb 20251,0621,0626,2846,2840$71.53$4.19
Jan 20257127126,8186,8180$75.74$4.13
Dec 20248948947,1807,075105$70.12$3.01
Nov 20241,5241,5246,4946,4940$69.95$2.12
Oct 20241,5321,5327,1757,1750$71.99$2.20
Sep 20241,1571,1577,4387,4380$70.24$2.28
Aug 20244651,0087,7507,7500$76.68$1.99
Jul 20241,9061,3637,6527,480172$81.80$2.07
Jun 20246831,3896,9226,9220$79.77$2.54
May 20241,3251,3138,2338,2330$80.02$2.12
Apr 20241,3361,3937,3527,3520$85.35$1.60
Mar 20241,3281,3687,1667,1633$81.28$1.49
Feb 20241,3521,1096,4826,2787$77.25$1.72
Jan 20241,5241,8207,7257,5140$74.15$3.18
Dec 20231,5401,4227,7907,5790$71.90$2.52
Nov 20231,3711,4707,2926,978117$77.69$2.71
Oct 20231,5781,6938,5588,3470$85.64$2.98
Sep 20231,4941,6887,6067,6060$89.43$2.64
Aug 20231,5301,1138,6168,6160$81.39$2.58

No report filed Flared above 3%

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 2026.

How to check your stub against this lease

Do your checks match this lease?

Check my statement

Nearby

This lease belongs to

OperatorApache CorporationFieldSpraberry (Trend Area)CountyGlasscock County

Apache Corporation in Glasscock County

All Apache Corporation leases →

Spraberry (Trend Area) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km