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Texas oil lease

Producing

MARTIN MASON UNIT D

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

1 well

967bbl oil, last 12 months+6% vs prior year
Operator
Ineos USA Oil & Gas LLC
County
McMullen County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-15420

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Where it sits

This county

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

Production by month

Oil output rose 6% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 6% over the last 12 monthsMonthly oil production and gas for MARTIN MASON UNIT D, Aug 2023 to Jul 2026. Oil output rose 6% over the last 12 months. 967 bbl in the 12 months through Jul 2026, against 914 bbl in the 12 months before.Last 12 months: 967 bblbbl per monthmcf per month001002200430064008Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 6% over the last 12 monthsMonthly oil production and gas for MARTIN MASON UNIT D, Aug 2023 to Jul 2026. Oil output rose 6% over the last 12 months. 967 bbl in the 12 months through Jul 2026, against 914 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001002200430064008Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

89% of the gas went to flaring in the last 12 months

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

  • Transmission line (2)
  • Flared (4)
89% of the gas went to flaring in the last 12 monthsShare of MARTIN MASON UNIT D gas by disposition code each month, Aug 2023 to Jul 2026. 89% of the gas went to flaring in the last 12 months. Flaring peaked at 100.0% of the gas in Sep 2023.Share of the lease’s gas by disposition code, per month0%50%100%Flared 100.0%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
89% of the gas went to flaring in the last 12 monthsShare of MARTIN MASON UNIT D gas by disposition code each month, Aug 2023 to Jul 2026. 89% of the gas went to flaring in the last 12 months. Flaring peaked at 100.0% of the gas in Sep 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.

  • Flared (4)

    89% · 25 mcf

  • Transmission line (2)

    11% · 3 mcf

89.3% of the gas flared in the last 12 months. 11 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.

1 well on this lease

Wells on MARTIN MASON UNIT D
API numberWell no.Status
42-311-342931HActive

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.OilGathers100Apr 28, 2023Nov 1, 2023
Chesapeake Energy Mktg, L.l.c.OilGathers20Sep 1, 2015Apr 28, 2023
Gulfmark Energy, Inc.OilGathers40Jun 1, 2013Apr 28, 2023
Valero Marketing and Supply Co.OilGathers40Jun 1, 2013Apr 28, 2023

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

Who buys my oilOil price check

350 acres on the newest permit

Check your decimal on this lease
Permits for Martin Mason Unit D
API numberWell no.Acreson the permit
42-311-342931H350

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 D
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Ineos USA650101$80.46$2.89
Jun 2026Ineos USA68143101$84.81$3.15
May 2026Ineos USA61161101$102.13$2.94
Apr 2026Ineos USA1290202$100.32$2.77
Mar 2026Ineos USA116165101$91.38$3.04
Feb 2026Ineos USA721000$64.51$3.62
Jan 2026Ineos USA72146000$60.04$7.72
Dec 2025Ineos USA780000$57.97$4.26
Nov 2025Ineos USA68149000$60.06$3.79
Oct 2025Ineos USA740808$60.89$3.19
Sep 2025Ineos USA75173202$63.96$2.97
Aug 2025Ineos USA891202$64.86$2.91
Jul 2025Ineos USA87124000$68.39$3.20
Jun 2025Ineos USA780000$68.17$3.02
May 2025Ineos USA95130000$62.17$3.12
Apr 2025Ineos USA132121000$63.54$3.42
Mar 2025Ineos USA327327000$68.24$4.12
Feb 2025Ineos USA11000$71.53$4.19
Jan 2025Ineos USA00000$75.74$4.13
Dec 2024Ineos USA00000$70.12$3.01
Nov 2024Ineos USA00000$69.95$2.12
Oct 2024Ineos USA14158000$71.99$2.20
Sep 2024Ineos USA180161000$70.24$2.28
Aug 2024Ineos USA00000$76.68$1.99
Jul 2024Ineos USA720000$81.80$2.07
Jun 2024Ineos USA00000$79.77$2.54
May 2024Ineos USA11000$80.02$2.12
Apr 2024Ineos USA560220$85.35$1.60
Mar 2024Ineos USA00000$81.28$1.49
Feb 2024Ineos USA00000$77.25$1.72
Jan 2024Ineos USA00000$74.15$3.18
Dec 2023Ineos USA00000$71.90$2.52
Nov 2023Ineos USA90000$77.69$2.71
Oct 2023Ineos USA99170101$85.64$2.98
Sep 2023Ineos USA75164101$89.43$2.64
Aug 2023Ineos USA91343615$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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