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Texas oil lease

Producing

TOM-SMITH UNIT C

Tom-Smith Unit C is an oil lease in Atascosa County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

5 wells

128,774bbl oil, last 12 months−65% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-20500

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
118,919 mcf
Oil in Jul 2026
4,314 bbl

Production by month

Oil output fell 65% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 65% over the last 12 monthsMonthly oil production and gas for TOM-SMITH UNIT C, Aug 2023 to Jul 2026. Oil output fell 65% over the last 12 months. 128,774 bbl in the 12 months through Jul 2026, against 369,560 bbl in the 12 months before.Last 12 months: 128,774 bblbbl per monthmcf per month0025k20k50k40k75k60k100k80kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 65% over the last 12 monthsMonthly oil production and gas for TOM-SMITH UNIT C, Aug 2023 to Jul 2026. Oil output fell 65% over the last 12 months. 128,774 bbl in the 12 months through Jul 2026, against 369,560 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0025k20k50k40k75k60k100k80kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

75% of the gas went to a processing plant in the last 12 months

Flaring peaked at 8.6% of the gas in Mar 2025.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
75% of the gas went to a processing plant in the last 12 monthsShare of TOM-SMITH UNIT C gas by disposition code each month, Aug 2023 to Jul 2026. 75% of the gas went to a processing plant in the last 12 months. Flaring peaked at 8.6% of the gas in Mar 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 8.6%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
75% of the gas went to a processing plant in the last 12 monthsShare of TOM-SMITH UNIT C gas by disposition code each month, Aug 2023 to Jul 2026. 75% of the gas went to a processing plant in the last 12 months. Flaring peaked at 8.6% of the gas in Mar 2025.Share of gas by disposition code0%50%100%Flared 8.6%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    75% · 89,559 mcf

  • Lease fuel (1)

    23% · 26,931 mcf

  • Flared (4)

    2.0% · 2,429 mcf

2.0% of the gas flared in the last 12 months. 20 months above 3%.

5 wells on this lease

Wells on TOM-SMITH UNIT C
API numberWell no.Status
42-013-358597HActive
42-013-359033HActive
42-013-359044HActive
42-013-359055HActive
42-013-359066HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCOilGathers25Jul 1, 2022–
Harvest Midstream CompanyOilGathers25Jul 1, 2022–
Reynolds Energy Transport LLCOilGathers25Jul 1, 2022–
Trafigura Trading LLCOilGathers25Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100Sep 1, 2021–
Marathon Oil Ef LLCCasinghead gasGathers100Sep 1, 2021–
Enterprise Crude Oil LLCOilGathers1Sep 1, 2021Jul 1, 2022
Gulfmark Energy, Inc.OilGathers1Sep 1, 2021Jul 1, 2022
Harvest Midstream CompanyOilGathers97Sep 1, 2021Jul 1, 2022
Trafigura Trading LLCOilGathers1Sep 1, 2021Jul 1, 2022

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

Who buys my oilOil price check

433.42 acres on the newest permit

Permits for Tom-Smith Unit C
API numberWell no.Acreson the permit
42-013-359055H433.42
42-013-359066H433.42
42-013-359033H433.42
42-013-359044H433.42
42-013-358597H433.42

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 TOM-SMITH UNIT C
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20264,3144,2923,6862,71047$80.46$2.89
Jun 20266,9427,0587,0674,941110$84.81$3.15
May 202611,65511,94811,8038,779232$102.13$2.94
Apr 202611,39811,11612,5529,158309$100.32$2.77
Mar 202612,22012,2089,6007,370151$91.38$3.04
Feb 20265,0045,1254,0773,08985$64.51$3.62
Jan 202612,61012,53811,6519,263190$60.04$7.72
Dec 202515,31715,24213,12710,608281$57.97$4.26
Nov 202511,27911,3696,8065,028164$60.06$3.79
Oct 202511,98811,99612,0388,562381$60.89$3.19
Sep 202514,61114,48511,6898,660226$63.96$2.97
Aug 202511,43611,52214,82311,391253$64.86$2.91
Jul 202513,55213,39014,50210,791368$68.39$3.20
Jun 202515,09415,48014,1879,783854$68.17$3.02
May 202521,98422,12521,26611,347620$62.17$3.12
Apr 202523,95623,92421,58213,2111,190$63.54$3.42
Mar 202521,39221,24117,1989,1521,485$68.24$4.12
Feb 202525,16325,17916,6639,125856$71.53$4.19
Jan 202533,60833,69620,92711,5551,146$75.74$4.13
Dec 202433,63733,48923,07513,912573$70.12$3.01
Nov 202442,83542,85430,72018,677979$69.95$2.12
Oct 202456,32456,66044,44327,9572,549$71.99$2.20
Sep 202481,91681,14254,64238,3831,726$70.24$2.28
Aug 202499115120717$76.68$1.99
Jul 20241,4171,4231,23985863$81.80$2.07
Jun 20241,9051,9091,6311,16168$79.77$2.54
May 20241,7211,7411,7041,09966$80.02$2.12
Apr 20242,0062,0002,6631,73278$85.35$1.60
Mar 20241,5411,5361,51797147$81.28$1.49
Feb 20241,7551,7421,8771,09359$77.25$1.72
Jan 20241,6921,7071,8421,029101$74.15$3.18
Dec 20231,7641,7921,8321,01655$71.90$2.52
Nov 20233,0903,0732,4431,495110$77.69$2.71
Oct 20233,0923,1062,3851,54250$85.64$2.98
Sep 20232,9042,9262,3441,519111$89.43$2.64
Aug 20233,5423,5123,0542,013163$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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This lease belongs to

OperatorMarathon Oil Ef LLCFieldEagleville (Eagle Ford-1)CountyAtascosa County

Marathon Oil Ef LLC in Atascosa County

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