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Texas oil lease

Producing

MARTIN-MASON RANCH UNIT A

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

2 wells

3,380bbl oil, last 12 months−10% vs prior year
Operator
Ineos USA Oil & Gas LLC
County
McMullen County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-15510

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Where it sits

This county

McMullen CountyMcMullenLa SalleAtascosaKarnesFrioLive OakMcMullen County
McMullen County
Gas, last 12 months
2,936 mcf
Oil in Jul 2026
263 bbl

Production by month

Oil output fell 10% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 10% over the last 12 monthsMonthly oil production and gas for MARTIN-MASON RANCH UNIT A, Aug 2023 to Jul 2026. Oil output fell 10% over the last 12 months. 3,380 bbl in the 12 months through Jul 2026, against 3,765 bbl in the 12 months before.Last 12 months: 3,380 bblbbl per monthmcf per month00200100400200600300800400Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 10% over the last 12 monthsMonthly oil production and gas for MARTIN-MASON RANCH UNIT A, Aug 2023 to Jul 2026. Oil output fell 10% over the last 12 months. 3,380 bbl in the 12 months through Jul 2026, against 3,765 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month00200100400200600300800400Jan 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 37.5% of the gas in Jan 2024.

  • 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 RANCH UNIT A 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 37.5% of the gas in Jan 2024.Share of the lease’s gas by disposition code, per month0%50%100%Oct 2025: line to fuelFlared 37.5%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Oct 2025 the lease's gas goes to lease fuel instead of a transmission lineShare of MARTIN-MASON RANCH UNIT A 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 37.5% of the gas in Jan 2024.Share of gas by disposition code0%50%100%Oct 25: line to fuelFlared 37.5%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Lease fuel (1)

    83% · 2,442 mcf

  • Transmission line (2)

    15% · 431 mcf

  • Flared (4)

    2.1% · 63 mcf

2.1% of the gas flared in the last 12 months. 9 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 RANCH UNIT A
API numberWell no.Status
42-311-342201HActive
42-311-34519U 5HShut-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

598.45 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 598 and 598.45 acres. Use the acres from your own division order for the well you are paid on.

  • 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 Ranch Unit A
API numberWell no.Acreson the permit
42-311-34519U 5H598.45
42-311-342201H598

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 RANCH UNIT A
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Ineos USA263305295379$80.46$2.89
Jun 2026Ineos USA250312307588$84.81$3.15
May 2026Ineos USA278136272149$102.13$2.94
Apr 2026Ineos USA3285093227011$100.32$2.77
Mar 2026Ineos USA2993543448312$91.38$3.04
Feb 2026Ineos USA367187263380$64.51$3.62
Jan 2026Ineos USA20731925001$60.04$7.72
Dec 2025Ineos USA253177262121$57.97$4.26
Nov 2025Ineos USA311452280390$60.06$3.79
Oct 2025Ineos USA344176287326$60.89$3.19
Sep 2025Ineos USA18217232320$63.96$2.97
Aug 2025Ineos USA29817422166$64.86$2.91
Jul 2025Ineos USA55347462620$68.39$3.20
Jun 2025Ineos USA56033330$68.17$3.02
May 2025Ineos USA3223201131130$62.17$3.12
Apr 2025Ineos USA22734169690$63.54$3.42
Mar 2025Ineos USA32130749490$68.24$4.12
Feb 2025Ineos USA33632518180$71.53$4.19
Jan 2025Ineos USA2431671051050$75.74$4.13
Dec 2024Ineos USA33630980800$70.12$3.01
Nov 2024Ineos USA34332894940$69.95$2.12
Oct 2024Ineos USA3284701201200$71.99$2.20
Sep 2024Ineos USA35029955550$70.24$2.28
Aug 2024Ineos USA35034865650$76.68$1.99
Jul 2024Ineos USA4053331351350$81.80$2.07
Jun 2024Ineos USA3193121441440$79.77$2.54
May 2024Ineos USA4674442362342$80.02$2.12
Apr 2024Ineos USA5486552682680$85.35$1.60
Mar 2024Ineos USA4924923353332$81.28$1.49
Feb 2024Ineos USA0139000$77.25$1.72
Jan 2024Ineos USA111016106$74.15$3.18
Dec 2023Ineos USA00000$71.90$2.52
Nov 2023Ineos USA13816021147$77.69$2.71
Oct 2023Ineos USA292149846321$85.64$2.98
Sep 2023Ineos USA3023131331303$89.43$2.64
Aug 2023Ineos USA30931416214022$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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