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MARY 18B

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

2 wells

137mcf gas, last 12 months−91% vs prior year
Operator
Pioneer Natural Res. USA, Inc.
County
Upton County
Field
Spraberry (Trend Area) R 40 Exc
RRC lease
7C-18589

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Where it sits

This county

Upton CountyUptonMidlandCraneGlasscockReaganEctorUpton County
Upton County
Gas in Jul 2026
0 mcf
Reporting since
Jan 2020

Checks stopped on this lease?

  • Sales

    No sales reported for the last 12 months of state data (through Jul 2026).

SourceRailroad Commission production, P-5 and P-4 records, data through Jul 2026.

See why checks stop on this lease

Production by month

Gas output fell 91% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output fell 91% over the last 12 monthsMonthly gas production and oil for MARY 18B, Aug 2023 to Jul 2026. Gas output fell 91% over the last 12 months. 137 mcf in the 12 months through Jul 2026, against 1,574 mcf in the 12 months before.Last 12 months: 137 mcfmcf per monthbbl per month001,0001002,0002003,0003004,000400Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output fell 91% over the last 12 monthsMonthly gas production and oil for MARY 18B, Aug 2023 to Jul 2026. Gas output fell 91% over the last 12 months. 137 mcf in the 12 months through Jul 2026, against 1,574 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month001,0001002,0002003,0003004,000400Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

92% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
92% of the gas went to a processing plant in the last 12 monthsShare of MARY 18B gas by disposition code each month, Aug 2023 to Jul 2026. 92% of the gas went to a processing plant in the last 12 months.Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
92% of the gas went to a processing plant in the last 12 monthsShare of MARY 18B gas by disposition code each month, Aug 2023 to Jul 2026. 92% of the gas went to a processing plant in the last 12 months.Share of gas by disposition code0%50%100%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    92% · 3,894 mcf

  • Lease fuel (1)

    8.1% · 345 mcf

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.

2 wells on this lease

Wells on MARY 18B
API numberWell no.Status
42-461-388672Shut-in
42-461-392336Active

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

80 acres on the newest permit

  • 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 18B
API numberWell no.Acreson the permit
42-461-38867280
42-461-39233680

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for MARY 18B
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Pioneer Natural00000$80.46$2.89
Jun 2026Pioneer Natural00000$84.81$3.15
May 2026Pioneer Natural00000$102.13$2.94
Apr 2026Pioneer Natural00000$100.32$2.77
Mar 2026Pioneer Natural00000$91.38$3.04
Feb 2026Pioneer Natural00000$64.51$3.62
Jan 2026Pioneer Natural00000$60.04$7.72
Dec 2025Pioneer Natural0045450$57.97$4.26
Nov 2025Pioneer Natural0039390$60.06$3.79
Oct 2025Pioneer Natural0053530$60.89$3.19
Sep 2025Pioneer Natural00000$63.96$2.97
Aug 2025Pioneer Natural00000$64.86$2.91
Jul 2025Pioneer Natural00000$68.39$3.20
Jun 2025Pioneer Natural00000$68.17$3.02
May 2025Pioneer Natural00000$62.17$3.12
Apr 2025Pioneer Natural00000$63.54$3.42
Mar 2025Pioneer Natural00000$68.24$4.12
Feb 2025Pioneer Natural0024240$71.53$4.19
Jan 2025Pioneer Natural0028280$75.74$4.13
Dec 2024Pioneer Natural002452450$70.12$3.01
Nov 2024Pioneer Natural00000$69.95$2.12
Oct 2024Pioneer Natural00000$71.99$2.20
Sep 2024Pioneer Natural029770$70.24$2.28
Aug 2024Pioneer Natural1242661,2701,1830$76.68$1.99
Jul 2024Pioneer Natural1291091,3851,2980$81.80$2.07
Jun 2024Pioneer Natural01026546540$79.77$2.54
May 2024Pioneer Natural1831342121250$80.02$2.12
Apr 2024Pioneer Natural002771930$85.35$1.60
Mar 2024Pioneer Natural0135164290$81.28$1.49
Feb 2024Pioneer Natural2661072,0441,9630$77.25$1.72
Jan 2024Pioneer Natural3472324513640$74.15$3.18
Dec 2023Pioneer Natural3102092,8272,7400$71.90$2.52
Nov 2023Pioneer Natural711192,8792,7950$77.69$2.71
Oct 2023Pioneer Natural1702482,7212,6340$85.64$2.98
Sep 2023Pioneer Natural1521682,8572,7730$89.43$2.64
Aug 2023Pioneer Natural172322,2652,1780$81.39$2.58

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

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Nearby

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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