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Texas gas well

Producing

VASTAR FEE UNIT A-121

Vastar Fee Unit A-121 is a gas well in Jasper County, Texas, operated by Rockstar Production, LLC in the Brookeland (Austin Chalk, 8800) field.

1 well

3,267mcf gas, last 12 months+52% vs prior year
Operator
Rockstar Production, LLC
County
Jasper County
Field
Brookeland (Austin Chalk, 8800)
RRC lease
06-183208

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Where it sits

This county

Jasper CountyJasperSan AugustineHardinSabineTylerNewtonAngelinaJasper County
Jasper County
Oil, last 12 months
96 bbl
Gas in Jul 2026
353 mcf

Checks stopped on this lease?

  • Operator

    Operator changed: Rockstar Production, LLC took over from Arcadia Energy Resources, LLC in May 2026.

SourceRailroad Commission production, P-5 and P-4 records, data through Jul 2026.

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Production by month

Gas output rose 52% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output rose 52% over the last 12 monthsMonthly gas production and oil for VASTAR FEE UNIT A-121, Aug 2023 to Jul 2026. Gas output rose 52% over the last 12 months. 3,267 mcf in the 12 months through Jul 2026, against 2,153 mcf in the 12 months before.Last 12 months: 3,267 mcfmcf per monthbbl per month002502550050750751,0001001,250125Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output rose 52% over the last 12 monthsMonthly gas production and oil for VASTAR FEE UNIT A-121, Aug 2023 to Jul 2026. Gas output rose 52% over the last 12 months. 3,267 mcf in the 12 months through Jul 2026, against 2,153 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month002502550050750751,0001001,250125Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

All of the gas went to a processing plant in the last 12 months

All of the gas went to a processing plant in the last 12 monthsShare of VASTAR FEE UNIT A-121 gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to a processing plant in the last 12 months.Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
All of the gas went to a processing plant in the last 12 monthsShare of VASTAR FEE UNIT A-121 gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to a processing plant in the last 12 months.Share of gas by disposition code0%50%100%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Who has run this lease

The operator changed 3 times, most recently in May 2026

Operators of this lease over timeRKI Energy Resources, LLC, Jan 2020 to Jun 2021; Prize Exploration & Prod, LLC, Jul 2021 to Dec 2023; Arcadia Energy Resources, LLC, Jan 2024 to Apr 2026; Rockstar Production, LLC, May 2026 to Jul 20262020202120222023202420252026Changed Jul 2021Changed Jan 2024Changed May 2026RKI Energy Resources, LLCJan 2020 to Jun 2021Prize Exploration & Prod, LLCJul 2021 to Dec 2023Arcadia Energy Resources, LLCJan 2024 to Apr 2026Rockstar Production, LLCMay 2026 to now
Operators of this lease over timeRKI Energy Resources, LLC, Jan 2020 to Jun 2021; Prize Exploration & Prod, LLC, Jul 2021 to Dec 2023; Arcadia Energy Resources, LLC, Jan 2024 to Apr 2026; Rockstar Production, LLC, May 2026 to Jul 20262020202120222023202420252026Changed Jul 2021Changed Jan 2024Changed May 2026RKI Energy Resources, LLCJan 2020 to Jun 2021Prize Exploration & Prod, LLCJul 2021 to Dec 2023Arcadia Energy Resources, LLCJan 2024 to Apr 2026Rockstar Production, LLCMay 2026 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on VASTAR FEE UNIT A-121
API numberWell no.Status
42-241-306791Shut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Infinity Hydrocarbons, LLCCondensateGathers100May 1, 2026–
Et Gathering & Processing LLCGas-well gasBuys100Oct 1, 2023–
Energy Transfer CompanyGas-well gasGathers100Nov 1, 2015–
Shell Trading (Us) CompanyCondensateGathers100Oct 1, 2023May 1, 2026
Dk Trading & Supply, LLCCondensateGathers50Dec 1, 2022Oct 1, 2023
Shell Trading (Us) CompanyCondensateGathers50Dec 1, 2022Oct 1, 2023
Etc Texas P/L, LTDGas-well gasBuys100Jan 1, 2018Oct 1, 2023
Lion Oil Trading & Trans, LLCCondensateGathers100Nov 1, 2021Dec 1, 2022
Phillips 66 CompanyCondensateGathers50Sep 18, 2020Nov 1, 2021

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

Who buys my oilOil price check

957.78 acres on the newest permit

  • Good to know

    A pooling certificate (P-12) was filed

    Your tract may share its production with neighbors in a pooled unit. The unit acres the operator uses to divide production can differ from the acreage on one 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 Vastar Fee Unit A-121
API numberWell no.Acreson the permit
42-241-306791957.78

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for VASTAR FEE UNIT A-121
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Rockstar Production,1503533530$80.46$2.89
Jun 2026Rockstar Production,10752222220$84.81$3.15
May 2026Rockstar Production,706406400$102.13$2.94
Apr 2026Arcadia Energy1802462460$100.32$2.77
Mar 2026Arcadia Energy2805865860$91.38$3.04
Feb 2026Arcadia Energy0084840$64.51$3.62
Jan 2026Arcadia Energy303073070$60.04$7.72
Dec 2025Arcadia Energy2871641640$57.97$4.26
Nov 2025Arcadia Energy0090900$60.06$3.79
Oct 2025Arcadia Energy0090900$60.89$3.19
Sep 2025Arcadia Energy1303063060$63.96$2.97
Aug 2025Arcadia Energy001791790$64.86$2.91
Jul 2025Arcadia Energy1004024020$68.39$3.20
Jun 2025Arcadia Energy0023230$68.17$3.02
May 2025Arcadia Energy403203200$62.17$3.12
Apr 2025Arcadia Energy1902682680$63.54$3.42
Mar 2025Arcadia Energy271244714710$68.24$4.12
Feb 2025Arcadia Energy4003593590$71.53$4.19
Jan 2025Arcadia Energy4503103100$75.74$4.13
Dec 2024Arcadia Energy00000$70.12$3.01
Nov 2024Arcadia Energy00000$69.95$2.12
Oct 2024Arcadia Energy00000$71.99$2.20
Sep 2024Arcadia Energy00000$70.24$2.28
Aug 2024Arcadia Energy00000$76.68$1.99
Jul 2024Arcadia Energy00000$81.80$2.07
Jun 2024Arcadia Energy00000$79.77$2.54
May 2024Arcadia Energy00000$80.02$2.12
Apr 2024Arcadia Energy10501,0681,0680$85.35$1.60
Mar 2024Arcadia Energy180550$81.28$1.49
Feb 2024Arcadia Energy0057570$77.25$1.72
Jan 2024Arcadia Energy001391390$74.15$3.18
Dec 2023Prize Exploration0062620$71.90$2.52
Nov 2023Prize Exploration501631630$77.69$2.71
Oct 2023Prize Exploration0087870$85.64$2.98
Sep 2023Prize Exploration401099579570$89.43$2.64
Aug 2023Prize Exploration1301711710$81.39$2.58

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

OperatorRockstar Production, LLCFieldBrookeland (Austin Chalk, 8800)CountyJasper County

Rockstar Production, LLC in Jasper County

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