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Texas oil lease

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MARTIN MASON UNIT P

Martin Mason Unit P is an oil lease in McMullen County, Texas, operated by Ineos USA Oil & Gas LLC in the Eagleville (Eagle Ford-1) field.

2 wells

3,905bbl oil, last 12 months−11% vs prior year
Operator
Ineos USA Oil & Gas LLC
County
McMullen County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-17488

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Where it sits

This county

McMullen CountyMcMullenLa SalleAtascosaKarnesFrioLive OakMcMullen County
McMullen County
Gas, last 12 months
351 mcf
Oil in Jul 2026
297 bbl

Production by month

Oil output fell 11% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 11% over the last 12 monthsMonthly oil production and gas for MARTIN MASON UNIT P, Aug 2023 to Jul 2026. Oil output fell 11% over the last 12 months. 3,905 bbl in the 12 months through Jul 2026, against 4,377 bbl in the 12 months before.Last 12 months: 3,905 bblbbl per monthmcf per month00250505001007501501,000200Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 11% over the last 12 monthsMonthly oil production and gas for MARTIN MASON UNIT P, Aug 2023 to Jul 2026. Oil output fell 11% over the last 12 months. 3,905 bbl in the 12 months through Jul 2026, against 4,377 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month00250505001007501501,000200Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

48% of the gas went to lease fuel in the last 12 months

Flaring peaked at 100.0% of the gas in Aug 2023.

  • Transmission line (2)
  • Lease fuel (1)
  • Flared (4)
48% of the gas went to lease fuel in the last 12 monthsShare of MARTIN MASON UNIT P gas by disposition code each month, Aug 2023 to Jul 2026. 48% of the gas went to lease fuel in the last 12 months. Flaring peaked at 100.0% of the gas in Aug 2023.Share of the lease’s gas by disposition code, per month0%50%100%Flared 100.0%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
48% of the gas went to lease fuel in the last 12 monthsShare of MARTIN MASON UNIT P gas by disposition code each month, Aug 2023 to Jul 2026. 48% of the gas went to lease fuel in the last 12 months. Flaring peaked at 100.0% of the gas in Aug 2023.Share of gas by disposition code0%50%100%Flared 100.0%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Lease fuel (1)

    48% · 168 mcf

  • Transmission line (2)

    38% · 133 mcf

  • Flared (4)

    14% · 50 mcf

14.2% of the gas flared in the last 12 months. 18 months above 3%.

Who has run this lease

The operator changed once, most recently in Apr 2023

Operators of this lease over timeChesapeake Operating, L.L.C., Jan 2020 to Mar 2023; Ineos USA Oil & Gas LLC, Apr 2023 to Jul 20262020202120222023202420252026Changed Apr 2023Chesapeake Operating, L.L.C.Jan 2020 to Mar 2023Ineos USA Oil & Gas LLCApr 2023 to now
Operators of this lease over timeChesapeake Operating, L.L.C., Jan 2020 to Mar 2023; Ineos USA Oil & Gas LLC, Apr 2023 to Jul 20262020202120222023202420252026Changed Apr 2023Chesapeake Operating, L.L.C.Jan 2020 to Mar 2023Ineos USA Oil & Gas LLCApr 2023 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

2 wells on this lease

Wells on MARTIN MASON UNIT P
API numberWell no.Status
42-311-353881HShut-in
42-311-354652HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Ineos Energy Marketing USA LLCOilGathers100Nov 1, 2023–
Ineos Energy Marketing USA LLCCasinghead gasBuys100Nov 1, 2023–
Williams Mlp Operating LLCCasinghead gasGathers100Oct 1, 2015–
Chesapeake Energy Mktg, L.l.c.Casinghead gasBuys100Sep 1, 2015Nov 1, 2023
Chesapeake Energy Mktg, L.l.c.OilGathers100Sep 1, 2015Nov 1, 2023

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

Who buys my oilOil price check

448.37 acres on the newest permit

Check your decimal on this lease
Permits for Martin Mason Unit P
API numberWell no.Acreson the permit
42-311-354652H448.37
42-311-353881H448.37

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for MARTIN MASON UNIT P
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Ineos USA297326505$80.46$2.89
Jun 2026Ineos USA278163505$84.81$3.15
May 2026Ineos USA279324505$102.13$2.94
Apr 2026Ineos USA299337505$100.32$2.77
Mar 2026Ineos USA284374404$91.38$3.04
Feb 2026Ineos USA330319615$64.51$3.62
Jan 2026Ineos USA382310101$60.04$7.72
Dec 2025Ineos USA3303231091$57.97$4.26
Nov 2025Ineos USA351348110291$60.06$3.79
Oct 2025Ineos USA374349139483$60.89$3.19
Sep 2025Ineos USA326331707$63.96$2.97
Aug 2025Ineos USA37533054468$64.86$2.91
Jul 2025Ineos USA34147942420$68.39$3.20
Jun 2025Ineos USA34531543430$68.17$3.02
May 2025Ineos USA36532158580$62.17$3.12
Apr 2025Ineos USA35450060600$63.54$3.42
Mar 2025Ineos USA39134738380$68.24$4.12
Feb 2025Ineos USA33133032320$71.53$4.19
Jan 2025Ineos USA38633028280$75.74$4.13
Dec 2024Ineos USA34249034340$70.12$3.01
Nov 2024Ineos USA41230769690$69.95$2.12
Oct 2024Ineos USA33031254540$71.99$2.20
Sep 2024Ineos USA39032392920$70.24$2.28
Aug 2024Ineos USA39049485850$76.68$1.99
Jul 2024Ineos USA4263441071070$81.80$2.07
Jun 2024Ineos USA38850166660$79.77$2.54
May 2024Ineos USA4313571021002$80.02$2.12
Apr 2024Ineos USA41852046460$85.35$1.60
Mar 2024Ineos USA80273752484$81.28$1.49
Feb 2024Ineos USA55550552250$77.25$1.72
Jan 2024Ineos USA144013013$74.15$3.18
Dec 2023Ineos USA11216110010$71.90$2.52
Nov 2023Ineos USA54251841041$77.69$2.71
Oct 2023Ineos USA46233442141$85.64$2.98
Sep 2023Ineos USA42850040040$89.43$2.64
Aug 2023Ineos USA47252442042$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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Nearby

This lease belongs to

OperatorIneos USA Oil & Gas LLCFieldEagleville (Eagle Ford-1)CountyMcMullen County

Ineos USA Oil & Gas LLC in McMullen County

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Eagleville (Eagle Ford-1) field

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