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Texas oil lease

Producing

MARY 18A-18

Mary 18A-18 is an oil lease in Upton County, Texas, operated by Pioneer Natural Res. USA, Inc. in the Spraberry (Trend Area) R 40 Exc field.

1 well

1,449bbl oil, last 12 months−33% vs prior year
Operator
Pioneer Natural Res. USA, Inc.
County
Upton County
Field
Spraberry (Trend Area) R 40 Exc
RRC lease
7C-18995

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Where it sits

This county

Upton CountyUptonMidlandCraneGlasscockReaganEctorUpton County
Upton County
Gas, last 12 months
17,394 mcf
Oil in Jul 2026
91 bbl

Production by month

Oil output fell 33% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 33% over the last 12 monthsMonthly oil production and gas for MARY 18A-18, Aug 2023 to Jul 2026. Oil output fell 33% over the last 12 months. 1,449 bbl in the 12 months through Jul 2026, against 2,161 bbl in the 12 months before.Last 12 months: 1,449 bblbbl per monthmcf per month001001,0002002,0003003,0004004,0005005,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 33% over the last 12 monthsMonthly oil production and gas for MARY 18A-18, Aug 2023 to Jul 2026. Oil output fell 33% over the last 12 months. 1,449 bbl in the 12 months through Jul 2026, against 2,161 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001001,0002002,0003003,0004004,0005005,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Apr 2026 the lease's gas goes to a processing plant instead of lease fuel

Flaring peaked at 4.5% of the gas in Mar 2026.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since Apr 2026 the lease's gas goes to a processing plant instead of lease fuelShare of MARY 18A-18 gas by disposition code each month, Aug 2023 to Jul 2026. Since Apr 2026 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 4.5% of the gas in Mar 2026.Share of the lease’s gas by disposition code, per month0%50%100%Apr 2026: fuel to plantFlared 4.5%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Apr 2026 the lease's gas goes to a processing plant instead of lease fuelShare of MARY 18A-18 gas by disposition code each month, Aug 2023 to Jul 2026. Since Apr 2026 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 4.5% of the gas in Mar 2026.Share of gas by disposition code0%50%100%Apr 26: fuel to plantFlared 4.5%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    93% · 18,485 mcf

  • Lease fuel (1)

    5.4% · 1,082 mcf

  • Flared (4)

    1.5% · 288 mcf

1.5% of the gas flared in the last 12 months. 2 months above 3%.

Who has run this lease

The operator changed once, most recently in Feb 2021

Operators of this lease over timeParsley Energy Operations, LLC, Jan 2020 to Jan 2021; Pioneer Natural Res. USA, Inc., Feb 2021 to Jul 20262020202120222023202420252026Changed Feb 2021Parsley Energy Operations, LLCJan 2020 to Jan 2021Pioneer Natural Res. USA, Inc.Feb 2021 to now
Operators of this lease over timeParsley Energy Operations, LLC, Jan 2020 to Jan 2021; Pioneer Natural Res. USA, Inc., Feb 2021 to Jul 20262020202120222023202420252026Changed Feb 2021Parsley Energy Operations, LLCJan 2020 to Jan 2021Pioneer Natural Res. USA, Inc.Feb 2021 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on MARY 18A-18
API numberWell no.Status
42-461-397372HAActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Medallion Operating Company, LLCOilGathers50Jul 1, 2015
Shell Trading (Us) CompanyOilGathers50Jul 1, 2015
Targa Pipeline Mid-Continent LLCCasinghead gasBuys100Jul 1, 2015
Targa Pipeline Mid-Continent LLCCasinghead gasGathers100Jul 1, 2015

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

Who buys my oilOil price check

583 acres on the newest permit

  • Worth asking

    An allocation well is on this lease

    A well drilled across several tracts shares its production by an allocation formula, so the decimal is not always your acres over the unit acres. Ask the operator for the allocation formula and the tract factor for your land.

  • Worth asking

    A production sharing agreement well is on this lease

    A production sharing agreement divides production by a method the agreement sets. Ask the operator for the agreement and the tract percentage it gives your land.

  • Worth asking

    A Rule 37 case is listed

    The RRC permit records list a Rule 37 case. This does not establish your royalty share. Ask for the permit and unit plat for your well.

Check your decimal on this lease
Permits for Mary 18A-18
API numberWell no.Acreson the permit
42-461-397372HA583

SourceRailroad Commission drilling permits, Oct 3, 2026 (source 1, source 2).

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for MARY 18A-18
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Pioneer Natural918939320$80.46$2.89
Jun 2026Pioneer Natural10110674611$84.81$3.15
May 2026Pioneer Natural11411122220$102.13$2.94
Apr 2026Pioneer Natural12813915150$100.32$2.77
Mar 2026Pioneer Natural261245157327$91.38$3.04
Feb 2026Pioneer Natural3839000$64.51$3.62
Jan 2026Pioneer Natural44432,0412,0199$60.04$7.72
Dec 2025Pioneer Natural44566005670$57.97$4.26
Nov 2025Pioneer Natural1621633,0672,8900$60.06$3.79
Oct 2025Pioneer Natural1481654,1733,837127$60.89$3.19
Sep 2025Pioneer Natural1411333,9043,586102$63.96$2.97
Aug 2025Pioneer Natural1771853,3023,09634$64.86$2.91
Jul 2025Pioneer Natural2732482,4612,3288$68.39$3.20
Jun 2025Pioneer Natural73805525250$68.17$3.02
May 2025Pioneer Natural2442411,0479900$62.17$3.12
Apr 2025Pioneer Natural1491486155800$63.54$3.42
Mar 2025Pioneer Natural16416213130$68.24$4.12
Feb 2025Pioneer Natural134137880$71.53$4.19
Jan 2025Pioneer Natural18618366630$75.74$4.13
Dec 2024Pioneer Natural2142122772620$70.12$3.01
Nov 2024Pioneer Natural1471576446090$69.95$2.12
Oct 2024Pioneer Natural2282247457003$71.99$2.20
Sep 2024Pioneer Natural2162131,1401,06420$70.24$2.28
Aug 2024Pioneer Natural1331358337891$76.68$1.99
Jul 2024Pioneer Natural1841841,0631,0190$81.80$2.07
Jun 2024Pioneer Natural1901961,0159700$79.77$2.54
May 2024Pioneer Natural2242118177791$80.02$2.12
Apr 2024Pioneer Natural1151243773574$85.35$1.60
Mar 2024Pioneer Natural2132255154930$81.28$1.49
Feb 2024Pioneer Natural2402251,0771,00426$77.25$1.72
Jan 2024Pioneer Natural2412434964771$74.15$3.18
Dec 2023Pioneer Natural2492501,0399893$71.90$2.52
Nov 2023Pioneer Natural2242135825580$77.69$2.71
Oct 2023Pioneer Natural1391504123951$85.64$2.98
Sep 2023Pioneer Natural3123061,1021,0620$89.43$2.64
Aug 2023Pioneer Natural16317572710$81.39$2.58

Flared above 3%

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

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This lease belongs to

OperatorPioneer Natural Res. USA, Inc.FieldSpraberry (Trend Area) R 40 ExcCountyUpton County

Pioneer Natural Res. USA, Inc. in Upton County

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Spraberry (Trend Area) R 40 Exc field

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