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Texas oil lease

Producing

HARTMAN UNIT AC

Hartman Unit Ac is an oil lease in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Fashing (Austin Chalk) field.

1 well

2,348bbl oil, last 12 months+999% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Fashing (Austin Chalk)
RRC lease
01-17838

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
1,822 mcf
Oil in Jul 2026
265 bbl

Production by month

Oil output rose 33,443% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 33,443% over the last 12 monthsMonthly oil production and gas for HARTMAN UNIT AC, Aug 2023 to Jul 2026. Oil output rose 33,443% over the last 12 months. 2,348 bbl in the 12 months through Jul 2026, against 7 bbl in the 12 months before.Last 12 months: 2,348 bblbbl per monthmcf per month002502005004007506001,000800Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 33,443% over the last 12 monthsMonthly oil production and gas for HARTMAN UNIT AC, Aug 2023 to Jul 2026. Oil output rose 33,443% over the last 12 months. 2,348 bbl in the 12 months through Jul 2026, against 7 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002502005004007506001,000800Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

80% of the gas went to a processing plant in the last 12 months

Flaring peaked at 8.0% of the gas in Apr 2024.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
80% of the gas went to a processing plant in the last 12 monthsShare of HARTMAN UNIT AC gas by disposition code each month, Aug 2023 to Jul 2026. 80% of the gas went to a processing plant in the last 12 months. Flaring peaked at 8.0% of the gas in Apr 2024.Share of the lease’s gas by disposition code, per month0%50%100%Flared 8.0%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
80% of the gas went to a processing plant in the last 12 monthsShare of HARTMAN UNIT AC gas by disposition code each month, Aug 2023 to Jul 2026. 80% of the gas went to a processing plant in the last 12 months. Flaring peaked at 8.0% of the gas in Apr 2024.Share of gas by disposition code0%50%100%Flared 8.0%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    80% · 1,840 mcf

  • Lease fuel (1)

    18% · 417 mcf

  • Flared (4)

    2.0% · 47 mcf

2.0% of the gas flared in the last 12 months. 5 months above 3%.

1 well on this lease

Wells on HARTMAN UNIT AC
API numberWell no.Status
42-255-335721HActive

SourceTexas Railroad Commission Wellbore Query.

395.14 acres on the newest permit

Permits for Hartman Unit Ac
API numberWell no.Acreson the permit
42-255-335721H395.14

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

Unit decimal checker

What ConocoPhillips told investors it received

Marathon Oil Ef LLC is linked to ConocoPhillips (MRO).
Realized prices reported by ConocoPhillips
QuarterOil$ per bblFiling
Q2 2026$99.40SEC filing
Q1 2026$73.47SEC filing
Q3 2025$66.13SEC filing
Q2 2025$64.23SEC filing
Q1 2025$71.65SEC filing

SourceConocoPhillips quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

36 months, newest first

Ledger for HARTMAN UNIT AC
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20262652611821471$80.46$2.89
Jun 202602000$84.81$3.15
May 20261551551501203$102.13$2.94
Apr 2026110112101792$100.32$2.77
Mar 20262782772311823$91.38$3.04
Feb 20263593562051652$64.51$3.62
Jan 202699650$60.04$7.72
Dec 202501000$57.97$4.26
Nov 20251361401711401$60.06$3.79
Oct 20258798766845704$60.89$3.19
Sep 202515715592760$63.96$2.97
Aug 202500000$64.86$2.91
Jul 202500000$68.39$3.20
Jun 202500000$68.17$3.02
May 202500000$62.17$3.12
Apr 202500000$63.54$3.42
Mar 202500000$68.24$4.12
Feb 202500000$71.53$4.19
Jan 202500000$75.74$4.13
Dec 202400000$70.12$3.01
Nov 202477110$69.95$2.12
Oct 202400000$71.99$2.20
Sep 202400000$70.24$2.28
Aug 202401000$76.68$1.99
Jul 2024959878573$81.80$2.07
Jun 202440841040329828$79.77$2.54
May 202452552459947437$80.02$2.12
Apr 202451050960046448$85.35$1.60
Mar 202431130726420812$81.28$1.49
Feb 2024121417160$77.25$1.72
Jan 20241761791821675$74.15$3.18
Dec 20234324324624335$71.90$2.52
Nov 20235045025415058$77.69$2.71
Oct 20232922915535215$85.64$2.98
Sep 20232182205435126$89.43$2.64
Aug 20233333376626246$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

OperatorMarathon Oil Ef LLCFieldFashing (Austin Chalk)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

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Fashing (Austin Chalk) field

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