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Texas oil lease

Producing

Y-BAR UNIT A

Y-Bar Unit A is an oil lease in McMullen County, Texas, operated by Castlerock Ef Operating LLC in the Eagleville (Eagle Ford-1) field.

3 wells

12,090bbl oil, last 12 months+591% vs prior year
Operator
Castlerock Ef Operating LLC
County
McMullen County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-17978

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Where it sits

This county

McMullen CountyMcMullenLA SalleAtascosaKarnesFrioLive OakMcMullen County
McMullen County
Gas, last 12 months
18,708 mcf
Oil in Jul 2026
1,086 bbl

Production by month

Oil output rose 591% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 591% over the last 12 monthsMonthly oil production and gas for Y-BAR UNIT A, Aug 2023 to Jul 2026. Oil output rose 591% over the last 12 months. 12,090 bbl in the 12 months through Jul 2026, against 1,750 bbl in the 12 months before.Last 12 months: 12,090 bblbbl per monthmcf per month005005001,0001,0001,5001,5002,0002,0002,5002,500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 591% over the last 12 monthsMonthly oil production and gas for Y-BAR UNIT A, Aug 2023 to Jul 2026. Oil output rose 591% over the last 12 months. 12,090 bbl in the 12 months through Jul 2026, against 1,750 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005005001,0001,0001,5001,5002,0002,0002,5002,500Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

64% of the gas went to a transmission line in the last 12 months

Flaring peaked at 65.6% of the gas in Aug 2023.

  • Transmission line (2)
  • Lease fuel (1)
  • Flared (4)
64% of the gas went to a transmission line in the last 12 monthsShare of Y-BAR UNIT A gas by disposition code each month, Aug 2023 to Jul 2026. 64% of the gas went to a transmission line in the last 12 months. Flaring peaked at 65.6% of the gas in Aug 2023.Share of the lease’s gas by disposition code, per month0%50%100%Flared 65.6%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
64% of the gas went to a transmission line in the last 12 monthsShare of Y-BAR UNIT A gas by disposition code each month, Aug 2023 to Jul 2026. 64% of the gas went to a transmission line in the last 12 months. Flaring peaked at 65.6% of the gas in Aug 2023.Share of gas by disposition code0%50%100%Flared 65.6%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    64% · 12,053 mcf

  • Lease fuel (1)

    23% · 4,250 mcf

  • Flared (4)

    13% · 2,405 mcf

12.9% of the gas flared in the last 12 months. 26 months above 3%.

Who has run this lease

The operator changed once, most recently in Aug 2022

Operators of this lease over timeMurphy Expl. & Prod. Co. - USA, Jan 2020 to Jul 2022; Castlerock Ef Operating LLC, Aug 2022 to Jul 20262020202120222023202420252026Changed Aug 2022Murphy Expl. & Prod. Co. - USAJan 2020 to Jul 2022Castlerock Ef Operating LLCAug 2022 to now
Operators of this lease over timeMurphy Expl. & Prod. Co. - USA, Jan 2020 to Jul 2022; Castlerock Ef Operating LLC, Aug 2022 to Jul 20262020202120222023202420252026Changed Aug 2022Murphy Expl. & Prod. Co. - USAJan 2020 to Jul 2022Castlerock Ef Operating LLCAug 2022 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

3 wells on this lease

Wells on Y-BAR UNIT A
API numberWell no.Status
42-311-354131HActive
42-311-354232HShut-in
42-311-358823HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Harvest Midstream CompanyOilGathers100Feb 1, 2024–
Dcp Operating Company, LPCasinghead gasBuys90Feb 1, 2024–
Tpl Southtex Midstream LLCCasinghead gasBuys10Feb 1, 2024–
Dcp Operating Company, LPCasinghead gasGathers90Feb 1, 2024–
Tpl Southtex Midstream LLCCasinghead gasGathers10Feb 1, 2024–
Dcp Operating Company, LPCasinghead gasGathers100Apr 1, 2017Feb 1, 2024
Dcp Operating Company, LPCasinghead gasBuys100Apr 1, 2017Feb 1, 2024
Harvest Marketing & Trading, LLCOilGathers5Aug 29, 2023Feb 1, 2024
Harvest Midstream CompanyOilGathers95Aug 29, 2023Feb 1, 2024
Arm Energy Management LLCOilGathers100Aug 1, 2022Aug 29, 2023
Bp Products North America Inc.OilGathers10Mar 23, 2014Aug 1, 2022

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

Who buys my oilOil price check

161.48 acres on the newest permit

Permits for Y-Bar Unit A
API numberWell no.Acreson the permit
42-311-358823H161.48
42-311-354232H160
42-311-354131H160

SourceRailroad Commission drilling permits, Sep 26, 2026 (source 1, source 2).

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for Y-BAR UNIT A
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Castlerock Ef1,0861,0851,629886327$80.46$2.89
Jun 2026Castlerock Ef7146781,8081,011201$84.81$3.15
May 2026Castlerock Ef9068962,2191,351328$102.13$2.94
Apr 2026Castlerock Ef1,0931,1112,0611,500149$100.32$2.77
Mar 2026Castlerock Ef1,6461,5642,0631,328342$91.38$3.04
Feb 2026Castlerock Ef1101841,6451,098192$64.51$3.62
Jan 2026Castlerock Ef1,5751,5561,8951,151270$60.04$7.72
Dec 2025Castlerock Ef1,2191,2082,2411,514246$57.97$4.26
Nov 2025Castlerock Ef1,0241,0292,0011,338270$60.06$3.79
Oct 2025Castlerock Ef1,1151,10288967562$60.89$3.19
Sep 2025Castlerock Ef1,0711,04716012412$63.96$2.97
Aug 2025Castlerock Ef53153197776$64.86$2.91
Jul 2025Castlerock Ef38238653405$68.39$3.20
Jun 2025Castlerock Ef49147551367$68.17$3.02
May 2025Castlerock Ef299290342010$62.17$3.12
Apr 2025Castlerock Ef5653962$63.54$3.42
Mar 2025Castlerock Ef00000$68.24$4.12
Feb 2025Castlerock Ef00000$71.53$4.19
Jan 2025Castlerock Ef00220$75.74$4.13
Dec 2024Castlerock Ef00000$70.12$3.01
Nov 2024Castlerock Ef06000$69.95$2.12
Oct 2024Castlerock Ef337337550$71.99$2.20
Sep 2024Castlerock Ef1851791495189$70.24$2.28
Aug 2024Castlerock Ef00000$76.68$1.99
Jul 2024Castlerock Ef00000$81.80$2.07
Jun 2024Castlerock Ef00000$79.77$2.54
May 2024Castlerock Ef08110$80.02$2.12
Apr 2024Castlerock Ef27327941131149$85.35$1.60
Mar 2024Castlerock Ef47747645234258$81.28$1.49
Feb 2024Castlerock Ef519521599369169$77.25$1.72
Jan 2024Castlerock Ef659659421196165$74.15$3.18
Dec 2023Castlerock Ef45844429718066$71.90$2.52
Nov 2023Castlerock Ef21623215237$77.69$2.71
Oct 2023Castlerock Ef1851861294254$85.64$2.98
Sep 2023Castlerock Ef27728243364247$89.43$2.64
Aug 2023Castlerock Ef6066021,44957951$81.39$2.58

Flared above 3%

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 2026.

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Nearby

This lease belongs to

OperatorCastlerock Ef Operating LLCFieldEagleville (Eagle Ford-1)CountyMcMullen County

Castlerock Ef Operating LLC in McMullen County

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