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Texas oil lease

Producing

CASTO UNIT I LAS

Casto Unit I Las is an oil lease in La Salle County, Texas, operated by Ineos USA Oil & Gas LLC in the Eagleville (Eagle Ford-1) field.

1 well

5,244bbl oil, last 12 months+2% vs prior year
Operator
Ineos USA Oil & Gas LLC
County
La Salle County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-16788

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Where it sits

This county

La Salle CountyLa SalleZavalaAtascosaMcMullenDimmitFrioLa Salle County
La Salle County
Gas, last 12 months
5,446 mcf
Oil in Jul 2026
454 bbl

Production by month

Oil output held steady over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output held steady over the last 12 monthsMonthly oil production and gas for CASTO UNIT I LAS, Aug 2023 to Jul 2026. Oil output held steady over the last 12 months. 5,244 bbl in the 12 months through Jul 2026, against 5,150 bbl in the 12 months before.Last 12 months: 5,244 bblbbl per monthmcf per month002005004001,0006001,5008002,0001,0002,500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output held steady over the last 12 monthsMonthly oil production and gas for CASTO UNIT I LAS, Aug 2023 to Jul 2026. Oil output held steady over the last 12 months. 5,244 bbl in the 12 months through Jul 2026, against 5,150 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002005004001,0006001,5008002,0001,0002,500Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Jun 2026 the lease's gas goes to a transmission line instead of lease fuel

Flaring peaked at 12.5% of the gas in Feb 2024.

  • Transmission line (2)
  • Lease fuel (1)
  • Flared (4)
Since Jun 2026 the lease's gas goes to a transmission line instead of lease fuelShare of CASTO UNIT I LAS gas by disposition code each month, Aug 2023 to Jul 2026. Since Jun 2026 the lease's gas goes to a transmission line instead of lease fuel. Flaring peaked at 12.5% of the gas in Feb 2024.Share of the lease’s gas by disposition code, per month0%50%100%Jun 2026: fuel to lineFlared 12.5%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Jun 2026 the lease's gas goes to a transmission line instead of lease fuelShare of CASTO UNIT I LAS gas by disposition code each month, Aug 2023 to Jul 2026. Since Jun 2026 the lease's gas goes to a transmission line instead of lease fuel. Flaring peaked at 12.5% of the gas in Feb 2024.Share of gas by disposition code0%50%100%Jun 26: fuel to lineFlared 12.5%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    53% · 2,872 mcf

  • Lease fuel (1)

    45% · 2,442 mcf

  • Flared (4)

    2.4% · 132 mcf

2.4% 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 CASTO UNIT I LAS
API numberWell no.Status
42-283-33434A 1HActive

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 gasGathers100Apr 28, 2023–
Chesapeake Energy Mktg, L.l.c.Casinghead gasBuys100Apr 28, 2023Nov 1, 2023
Chesapeake Energy Mktg, L.l.c.OilGathers100Apr 28, 2023Nov 1, 2023

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

Who buys my oilOil price check

275.99 acres on the newest permit

Check your decimal on this lease
Permits for Casto Unit I Las
API numberWell no.Acreson the permit
42-283-33434A 1H275.99

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for CASTO UNIT I LAS
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Ineos USA4544161,4231,13044$80.46$2.89
Jun 2026Ineos USA3784401,02975632$84.81$3.15
May 2026Ineos USA4283613417814$102.13$2.94
Apr 2026Ineos USA456529342938$100.32$2.77
Mar 2026Ineos USA454524324696$91.38$3.04
Feb 2026Ineos USA432344282489$64.51$3.62
Jan 2026Ineos USA489535345951$60.04$7.72
Dec 2025Ineos USA4823863591091$57.97$4.26
Nov 2025Ineos USA559620339971$60.06$3.79
Oct 2025Ineos USA419317309600$60.89$3.19
Sep 2025Ineos USA2162971351278$63.96$2.97
Aug 2025Ineos USA4774982182108$64.86$2.91
Jul 2025Ineos USA4793832182180$68.39$3.20
Jun 2025Ineos USA4724721721720$68.17$3.02
May 2025Ineos USA56762497970$62.17$3.12
Apr 2025Ineos USA4855011151150$63.54$3.42
Mar 2025Ineos USA45643357570$68.24$4.12
Feb 2025Ineos USA52856316160$71.53$4.19
Jan 2025Ineos USA57360732320$75.74$4.13
Dec 2024Ineos USA52845122220$70.12$3.01
Nov 2024Ineos USA496448330$69.95$2.12
Oct 2024Ineos USA00000$71.99$2.20
Sep 2024Ineos USA871304154141$70.24$2.28
Aug 2024Ineos USA4795411,9291,9281$76.68$1.99
Jul 2024Ineos USA5545722,4952,4941$81.80$2.07
Jun 2024Ineos USA5346192,0442,0440$79.77$2.54
May 2024Ineos USA7017781,7321,71418$80.02$2.12
Apr 2024Ineos USA7466259819810$85.35$1.60
Mar 2024Ineos USA6117574074043$81.28$1.49
Feb 2024Ineos USA42324616014020$77.25$1.72
Jan 2024Ineos USA42327846044020$74.15$3.18
Dec 2023Ineos USA48662839837523$71.90$2.52
Nov 2023Ineos USA66070158355231$77.69$2.71
Oct 2023Ineos USA5013381,4041,4004$85.64$2.98
Sep 2023Ineos USA6597022,0862,03056$89.43$2.64
Aug 2023Ineos USA56651374169744$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)CountyLa Salle County

Ineos USA Oil & Gas LLC in La Salle County

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Eagleville (Eagle Ford-1) field

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