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Texas oil lease

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MARTIN MASON UNIT N

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

2 wells

2,106bbl oil, last 12 months−44% vs prior year
Operator
Ineos USA Oil & Gas LLC
County
McMullen County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-15426

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Where it sits

This county

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

Production by month

Oil output fell 44% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 44% over the last 12 monthsMonthly oil production and gas for MARTIN MASON UNIT N, Aug 2023 to Jul 2026. Oil output fell 44% over the last 12 months. 2,106 bbl in the 12 months through Jul 2026, against 3,780 bbl in the 12 months before.Last 12 months: 2,106 bblbbl per monthmcf per month002501005002007503001,000400Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 44% over the last 12 monthsMonthly oil production and gas for MARTIN MASON UNIT N, Aug 2023 to Jul 2026. Oil output fell 44% over the last 12 months. 2,106 bbl in the 12 months through Jul 2026, against 3,780 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002501005002007503001,000400Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Oct 2025 the lease's gas goes to lease fuel instead of a transmission line

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

  • Transmission line (2)
  • Lease fuel (1)
  • Flared (4)
Since Oct 2025 the lease's gas goes to lease fuel instead of a transmission lineShare of MARTIN MASON UNIT N gas by disposition code each month, Aug 2023 to Jul 2026. Since Oct 2025 the lease's gas goes to lease fuel instead of a transmission line. Flaring peaked at 100.0% of the gas in Dec 2023.Share of the lease’s gas by disposition code, per month0%50%100%Oct 2025: line to fuelFlared 100.0%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Oct 2025 the lease's gas goes to lease fuel instead of a transmission lineShare of MARTIN MASON UNIT N gas by disposition code each month, Aug 2023 to Jul 2026. Since Oct 2025 the lease's gas goes to lease fuel instead of a transmission line. Flaring peaked at 100.0% of the gas in Dec 2023.Share of gas by disposition code0%50%100%Oct 25: line to fuelFlared 100.0%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Lease fuel (1)

    85% · 643 mcf

  • Transmission line (2)

    11% · 80 mcf

  • Flared (4)

    4.5% · 34 mcf

4.5% of the gas flared in the last 12 months. 17 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 N
API numberWell no.Status
42-311-343041HActive
42-311-345404HShut-in

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

420.33 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 Martin Mason Unit N
API numberWell no.Acreson the permit
42-311-345404H420.33
42-311-343041H420.33

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

Unit decimal checker

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36 months, newest first

Ledger for MARTIN MASON UNIT N
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Ineos USA204156963$80.46$2.89
Jun 2026Ineos USA1161202$84.81$3.15
May 2026Ineos USA224298844$102.13$2.94
Apr 2026Ineos USA107177202$100.32$2.77
Mar 2026Ineos USA182167404$91.38$3.04
Feb 2026Ineos USA168161303$64.51$3.62
Jan 2026Ineos USA176176000$60.04$7.72
Dec 2025Ineos USA20315825111$57.97$4.26
Nov 2025Ineos USA20117523951$60.06$3.79
Oct 2025Ineos USA146173178107$60.89$3.19
Sep 2025Ineos USA18215715123$63.96$2.97
Aug 2025Ineos USA19718931274$64.86$2.91
Jul 2025Ineos USA18534515150$68.39$3.20
Jun 2025Ineos USA191169880$68.17$3.02
May 2025Ineos USA231172000$62.17$3.12
Apr 2025Ineos USA152324990$63.54$3.42
Mar 2025Ineos USA22817847470$68.24$4.12
Feb 2025Ineos USA25415414140$71.53$4.19
Jan 2025Ineos USA176159550$75.74$4.13
Dec 2024Ineos USA40643417170$70.12$3.01
Nov 2024Ineos USA43235757570$69.95$2.12
Oct 2024Ineos USA4515071381380$71.99$2.20
Sep 2024Ineos USA5084861791790$70.24$2.28
Aug 2024Ineos USA56682251510$76.68$1.99
Jul 2024Ineos USA717396000$81.80$2.07
Jun 2024Ineos USA26031911110$79.77$2.54
May 2024Ineos USA62663816133$80.02$2.12
Apr 2024Ineos USA9471,0321071070$85.35$1.60
Mar 2024Ineos USA5225031073$81.28$1.49
Feb 2024Ineos USA830404$77.25$1.72
Jan 2024Ineos USA00000$74.15$3.18
Dec 2023Ineos USA89175404$71.90$2.52
Nov 2023Ineos USA60347132230$77.69$2.71
Oct 2023Ineos USA52352840832$85.64$2.98
Sep 2023Ineos USA5131,02432275$89.43$2.64
Aug 2023Ineos USA686496895138$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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