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Texas oil lease

Producing

CHALK, MARY

Chalk, Mary is an oil lease in Howard County, Texas, operated by Extex Operating Company in the Howard Glasscock (Consolidated) field.

10 wells

4,222bbl oil, last 12 months−18% vs prior year
Operator
Extex Operating Company
County
Howard County
Field
Howard Glasscock (Consolidated)
RRC lease
08-41716

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Where it sits

This county

Howard CountyHowardMitchellMartinScurryDawsonBordenHoward County
Howard County
Oil in Jul 2026
314 bbl
Reporting since
Jan 2020

Production by month

Oil output fell 18% over the last 12 months

  • Oil (bars)
  • Last 12 months
Oil output fell 18% over the last 12 monthsMonthly oil production for CHALK, MARY, Aug 2023 to Jul 2026. Oil output fell 18% over the last 12 months. 4,222 bbl in the 12 months through Jul 2026, against 5,177 bbl in the 12 months before.Last 12 months: 4,222 bblbbl per month0200400600800Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 18% over the last 12 monthsMonthly oil production for CHALK, MARY, Aug 2023 to Jul 2026. Oil output fell 18% over the last 12 months. 4,222 bbl in the 12 months through Jul 2026, against 5,177 bbl in the 12 months before.Last 12 monthsbbl per month0200400600800Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

No gas disposition reported for this lease

The operator has not reported where the gas went in the months we hold.

Who has run this lease

The operator changed once, most recently in Feb 2021

Operators of this lease over timeLegacy Reserves Operating LP, Jan 2020 to Jan 2021; Extex Operating Company, Feb 2021 to Jul 20262020202120222023202420252026Changed Feb 2021Legacy Reserves Operating LPJan 2020 to Jan 2021Extex Operating CompanyFeb 2021 to now
Operators of this lease over timeLegacy Reserves Operating LP, Jan 2020 to Jan 2021; Extex Operating Company, Feb 2021 to Jul 20262020202120222023202420252026Changed Feb 2021Legacy Reserves Operating LPJan 2020 to Jan 2021Extex Operating CompanyFeb 2021 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

10 wells on this lease

Wells on CHALK, MARY
API numberWell no.Status
42-227-041321Active
42-227-041433Active
42-227-041464Active
42-227-041475Active
42-227-041486Active
42-227-041497Shut-in
42-227-041508Active
42-227-1013310Active
42-227-1013411Shut-in
42-227-8115012Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Energy Trans Crude Marketing LLCOilGathers100Jan 1, 2022–
Dorado Oil CompanyOilGathers100Jun 1, 2018Jan 1, 2022

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

Who buys my oilOil price check

80 acres on the newest permit

10 wells are listed on this lease

Permits for Chalk, Mary
API numberWell no.Acreson the permit
42-227-811501280
42-227-041321–
42-227-041433–
42-227-041464–
42-227-041475–
42-227-041486–
42-227-041497–
42-227-041508–
42-227-1013310–
42-227-1013411–

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

Unit decimal checker

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36 months, newest first

Ledger for CHALK, MARY
MonthOil producedbblOil soldbblWTI$/bblHenry Hub$/MMBtu
Jul 2026Extex Operating314173$80.46$2.89
Jun 2026Extex Operating331320$84.81$3.15
May 2026Extex Operating404487$102.13$2.94
Apr 2026Extex Operating401489$100.32$2.77
Mar 2026Extex Operating391479$91.38$3.04
Feb 2026Extex Operating393174$64.51$3.62
Jan 2026Extex Operating321328$60.04$7.72
Dec 2025Extex Operating334331$57.97$4.26
Nov 2025Extex Operating265331$60.06$3.79
Oct 2025Extex Operating366319$60.89$3.19
Sep 2025Extex Operating386335$63.96$2.97
Aug 2025Extex Operating316323$64.86$2.91
Jul 2025Extex Operating228328$68.39$3.20
Jun 2025Extex Operating622638$68.17$3.02
May 2025Extex Operating424303$62.17$3.12
Apr 2025Extex Operating682646$63.54$3.42
Mar 2025Extex Operating202315$68.24$4.12
Feb 2025Extex Operating456486$71.53$4.19
Jan 2025Extex Operating272162$75.74$4.13
Dec 2024Extex Operating450478$70.12$3.01
Nov 2024Extex Operating434467$69.95$2.12
Oct 2024Extex Operating586492$71.99$2.20
Sep 2024Extex Operating231327$70.24$2.28
Aug 2024Extex Operating590458$76.68$1.99
Jul 2024Extex Operating311496$81.80$2.07
Jun 2024Extex Operating319162$79.77$2.54
May 2024Extex Operating212314$80.02$2.12
Apr 2024Extex Operating197166$85.35$1.60
Mar 2024Extex Operating165163$81.28$1.49
Feb 2024Extex Operating296323$77.25$1.72
Jan 2024Extex Operating248320$74.15$3.18
Dec 2023Extex Operating314159$71.90$2.52
Nov 2023Extex Operating231334$77.69$2.71
Oct 2023Extex Operating345331$85.64$2.98
Sep 2023Extex Operating331331$89.43$2.64
Aug 2023Extex Operating334350$81.39$2.58

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

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This lease belongs to

OperatorExtex Operating CompanyFieldHoward Glasscock (Consolidated)CountyHoward County

Extex Operating Company in Howard County

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Howard Glasscock (Consolidated) field

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