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Texas oil lease

Producing

ROCKIN M C UNIT

Rockin M C Unit is an oil lease in Atascosa County, Texas, operated by Trailblazer Energy Resources,llc in the Eagleville (Eagle Ford-1) field.

1 well

15,489bbl oil, last 12 months−19% vs prior year
Operator
Trailblazer Energy Resources,llc
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-20831

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
3,683 mcf
Oil in Jul 2026
1,192 bbl

Checks stopped on this lease?

  • Operator

    Operator changed: Trailblazer Energy Resources,llc took over from Pillar Efs, LLC in Feb 2026.

  • P-5

    The previous operator's P-5 registration is listed as inactive since Jul 21, 2026 (last P-5 filed Mar 2, 2026).

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

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Production by month

Oil output fell 19% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 19% over the last 12 monthsMonthly oil production and gas for ROCKIN M C UNIT, Aug 2023 to Jul 2026. Oil output fell 19% over the last 12 months. 15,489 bbl in the 12 months through Jul 2026, against 19,140 bbl in the 12 months before.Last 12 months: 15,489 bblbbl per monthmcf per month001,0005002,0001,0003,0001,5004,0002,0005,0002,500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 19% over the last 12 monthsMonthly oil production and gas for ROCKIN M C UNIT, Aug 2023 to Jul 2026. Oil output fell 19% over the last 12 months. 15,489 bbl in the 12 months through Jul 2026, against 19,140 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,0005002,0001,0003,0001,5004,0002,0005,0002,500Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

98% of the gas went to a transmission line in the last 12 months

Flaring peaked at 64.2% of the gas in Oct 2023.

  • Transmission line (2)
  • Flared (4)
98% of the gas went to a transmission line in the last 12 monthsShare of ROCKIN M C UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 98% of the gas went to a transmission line in the last 12 months. Flaring peaked at 64.2% of the gas in Oct 2023.Share of the lease’s gas by disposition code, per month0%50%100%Flared 64.2%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
98% of the gas went to a transmission line in the last 12 monthsShare of ROCKIN M C UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 98% of the gas went to a transmission line in the last 12 months. Flaring peaked at 64.2% of the gas in Oct 2023.Share of gas by disposition code0%50%100%Flared 64.2%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    98% · 3,614 mcf

  • Flared (4)

    1.9% · 69 mcf

1.9% of the gas flared in the last 12 months. 13 months above 3%.

Who has run this lease

The operator changed once, most recently in Feb 2026

Operators of this lease over timePillar Efs, LLC, Sep 2022 to Jan 2026; Trailblazer Energy Resources,llc, Feb 2026 to Jul 20262023202420252026Changed Feb 2026Pillar Efs, LLCSep 2022 to Jan 2026Trailblazer Energy Resources,…Feb 2026 to now
Operators of this lease over timePillar Efs, LLC, Sep 2022 to Jan 2026; Trailblazer Energy Resources,llc, Feb 2026 to Jul 20262023202420252026Changed Feb 2026Pillar Efs, LLCSep 2022 to Jan 2026Trailblazer Energy Resources,llcFeb 2026 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on ROCKIN M C UNIT
API numberWell no.Status
42-013-359021HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Shell Trading (Us) CompanyOilGathers100Sep 25, 2022–
Et Gathering & Processing LLCCasinghead gasBuys100Oct 1, 2023–
Energy Transfer CompanyCasinghead gasGathers100Sep 25, 2022–
Energy Transfer CompanyCasinghead gasBuys100Sep 25, 2022Oct 1, 2023

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

Who buys my oilOil price check

428.20 acres on the newest permit

Check your decimal on this lease
Permits for Rockin M C Unit
API numberWell no.Acreson the permit
42-013-359021H428.20

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for ROCKIN M C UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Trailblazer Energy1,1921,2984394390$80.46$2.89
Jun 2026Trailblazer Energy1,1801,0884474470$84.81$3.15
May 2026Trailblazer Energy1,2261,2676896890$102.13$2.94
Apr 2026Trailblazer Energy1,1471,1093763760$100.32$2.77
Mar 2026Trailblazer Energy1,3161,4545015010$91.38$3.04
Feb 2026Trailblazer Energy1,0428721961888$64.51$3.62
Jan 2026Pillar Efs,1,3571,27625823919$60.04$7.72
Dec 2025Pillar Efs,1,3581,48813811127$57.97$4.26
Nov 2025Pillar Efs,1,3121,1951601582$60.06$3.79
Oct 2025Pillar Efs,1,4261,5261801764$60.89$3.19
Sep 2025Pillar Efs,1,4171,4541561560$63.96$2.97
Aug 2025Pillar Efs,1,5161,4691431349$64.86$2.91
Jul 2025Pillar Efs,61854220200$68.39$3.20
Jun 2025Pillar Efs,1,1251,2224644640$68.17$3.02
May 2025Pillar Efs,1,6311,50062561015$62.17$3.12
Apr 2025Pillar Efs,1,5471,540637524113$63.54$3.42
Mar 2025Pillar Efs,1,3341,6447877870$68.24$4.12
Feb 2025Pillar Efs,1,9401,6605345340$71.53$4.19
Jan 2025Pillar Efs,1,2511,36163956574$75.74$4.13
Dec 2024Pillar Efs,1,6171,508819648171$70.12$3.01
Nov 2024Pillar Efs,1,8282,04089888414$69.95$2.12
Oct 2024Pillar Efs,1,9691,7968498490$71.99$2.20
Sep 2024Pillar Efs,2,0022,262352239113$70.24$2.28
Aug 2024Pillar Efs,2,2781,948597445152$76.68$1.99
Jul 2024Pillar Efs,2,2842,18927221557$81.80$2.07
Jun 2024Pillar Efs,2,4142,60545139160$79.77$2.54
May 2024Pillar Efs,2,2772,2797197190$80.02$2.12
Apr 2024Pillar Efs,2,2772,1926926920$85.35$1.60
Mar 2024Pillar Efs,2,5212,6089149140$81.28$1.49
Feb 2024Pillar Efs,2,6082,7038158150$77.25$1.72
Jan 2024Pillar Efs,3,0322,9839439430$74.15$3.18
Dec 2023Pillar Efs,2,9593,0821,1681,1680$71.90$2.52
Nov 2023Pillar Efs,3,5033,3971,2201,2200$77.69$2.71
Oct 2023Pillar Efs,4,7274,6341,271455816$85.64$2.98
Sep 2023Pillar Efs,8848631771770$89.43$2.64
Aug 2023Pillar Efs,4,4574,4481,5691,52148$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

OperatorTrailblazer Energy Resources,llcFieldEagleville (Eagle Ford-1)CountyAtascosa County

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