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Texas oil lease

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VESPER ASSOCIATES UNIT A LAS

Vesper Associates Unit A Las is an oil lease in La Salle County, Texas, operated by Ineos USA Oil & Gas LLC in the Briscoe Ranch (Eagleford) field.

1 well

2,754bbl oil, last 12 months−36% vs prior year
Operator
Ineos USA Oil & Gas LLC
County
La Salle County
Field
Briscoe Ranch (Eagleford)
RRC lease
01-17341

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Where it sits

This county

La Salle CountyLa SalleZavalaAtascosaMcMullenDimmitFrioLa Salle County
La Salle County
Gas, last 12 months
4,744 mcf
Oil in Jul 2026
203 bbl

Production by month

Oil output fell 36% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 36% over the last 12 monthsMonthly oil production and gas for VESPER ASSOCIATES UNIT A LAS, Aug 2023 to Jul 2026. Oil output fell 36% over the last 12 months. 2,754 bbl in the 12 months through Jul 2026, against 4,275 bbl in the 12 months before.Last 12 months: 2,754 bblbbl per monthmcf per month002005004001,0006001,5008002,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 36% over the last 12 monthsMonthly oil production and gas for VESPER ASSOCIATES UNIT A LAS, Aug 2023 to Jul 2026. Oil output fell 36% over the last 12 months. 2,754 bbl in the 12 months through Jul 2026, against 4,275 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002005004001,0006001,5008002,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

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

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

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

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Lease fuel (1)

    51% · 2,442 mcf

  • Transmission line (2)

    46% · 2,185 mcf

  • Flared (4)

    2.5% · 117 mcf

2.5% 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 VESPER ASSOCIATES UNIT A LAS
API numberWell no.Status
42-283-333541HActive

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

314.26 acres on the newest permit

Check your decimal on this lease
Permits for Vesper Associates Unit A Las
API numberWell no.Acreson the permit
42-283-333541H314.26

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

Unit decimal checker

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36 months, newest first

Ledger for VESPER ASSOCIATES UNIT A LAS
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Ineos USA2031662691010$80.46$2.89
Jun 2026Ineos USA2083333247310$84.81$3.15
May 2026Ineos USA19516726579$102.13$2.94
Apr 2026Ineos USA19917338513113$100.32$2.77
Mar 2026Ineos USA23117051725414$91.38$3.04
Feb 2026Ineos USA23636934110511$64.51$3.62
Jan 2026Ineos USA2091583671171$60.04$7.72
Dec 2025Ineos USA240351344941$57.97$4.26
Nov 2025Ineos USA2661585202781$60.06$3.79
Oct 2025Ineos USA29825462335420$60.89$3.19
Sep 2025Ineos USA2501892112110$63.96$2.97
Aug 2025Ineos USA21934257855127$64.86$2.91
Jul 2025Ineos USA2981806466460$68.39$3.20
Jun 2025Ineos USA3725089209200$68.17$3.02
May 2025Ineos USA3943447967960$62.17$3.12
Apr 2025Ineos USA2171773523520$63.54$3.42
Mar 2025Ineos USA18317958580$68.24$4.12
Feb 2025Ineos USA2673153463460$71.53$4.19
Jan 2025Ineos USA3643341,6901,6900$75.74$4.13
Dec 2024Ineos USA40949189890$70.12$3.01
Nov 2024Ineos USA4453202052050$69.95$2.12
Oct 2024Ineos USA4605074774770$71.99$2.20
Sep 2024Ineos USA3033661621620$70.24$2.28
Aug 2024Ineos USA563531000$76.68$1.99
Jul 2024Ineos USA633851000$81.80$2.07
Jun 2024Ineos USA56935938380$79.77$2.54
May 2024Ineos USA128180871$80.02$2.12
Apr 2024Ineos USA350330$85.35$1.60
Mar 2024Ineos USA0182000$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 USA950101$77.69$2.71
Oct 2023Ineos USA4515141385$85.64$2.98
Sep 2023Ineos USA510101$89.43$2.64
Aug 2023Ineos USA00000$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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This lease belongs to

OperatorIneos USA Oil & Gas LLCFieldBriscoe Ranch (Eagleford)CountyLa Salle County

Ineos USA Oil & Gas LLC in La Salle County

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