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Texas oil lease

Producing

MEDINA-JONAS UNIT B

Medina-Jonas Unit B is an oil lease in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

4 wells

20,756bbl oil, last 12 months−34% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-10002

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
6,512 mcf
Oil in Jul 2026
752 bbl

Production by month

Oil output fell 34% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 34% over the last 12 monthsMonthly oil production and gas for MEDINA-JONAS UNIT B, Aug 2023 to Jul 2026. Oil output fell 34% over the last 12 months. 20,756 bbl in the 12 months through Jul 2026, against 31,377 bbl in the 12 months before.Last 12 months: 20,756 bblbbl per monthmcf per month001,0002,0002,0004,0003,0006,0004,0008,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 34% over the last 12 monthsMonthly oil production and gas for MEDINA-JONAS UNIT B, Aug 2023 to Jul 2026. Oil output fell 34% over the last 12 months. 20,756 bbl in the 12 months through Jul 2026, against 31,377 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,0002,0002,0004,0003,0006,0004,0008,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel

Flaring peaked at 4.7% of the gas in Jan 2024.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuelShare of MEDINA-JONAS UNIT B gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 4.7% of the gas in Jan 2024.Share of the lease’s gas by disposition code, per month0%50%100%Mar 2024: fuel to plantFlared 4.7%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuelShare of MEDINA-JONAS UNIT B gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 4.7% of the gas in Jan 2024.Share of gas by disposition code0%50%100%Mar 24: fuel to plantFlared 4.7%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    68% · 4,458 mcf

  • Lease fuel (1)

    30% · 1,976 mcf

  • Flared (4)

    1.2% · 78 mcf

1.2% of the gas flared in the last 12 months. 2 months above 3%.

4 wells on this lease

Wells on MEDINA-JONAS UNIT B
API numberWell no.Status
42-255-321411HShut-in
42-255-334382HShut-in
42-255-338753HActive
42-255-338784HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Endeavor Crude, LLCOilGathers25Jan 1, 2024–
Enterprise Crude Oil LLCOilGathers25Nov 1, 2021–
Genesis Crude Oil, L.p.OilGathers25Jan 1, 2024–
Statewide Crude Inc.OilGathers25Jan 1, 2024–
Marathon Oil Ef LLCCasinghead gasBuys100Mar 27, 2012–
Marathon Oil Ef LLCCasinghead gasGathers100Mar 27, 2012–
Dks Transport LLCOilGathers25Nov 1, 2021Jan 1, 2024
Harvest Midstream CompanyOilGathers25Nov 1, 2021Jan 1, 2024
Trafigura Trading LLCOilGathers25Nov 1, 2021Jan 1, 2024
Enterprise Crude Oil LLCOilGathers20Mar 27, 2012Nov 1, 2021
Genesis Crude Oil, L.p.OilGathers10Mar 27, 2012Nov 1, 2021
Gulfmark Energy, Inc.OilGathers35Mar 27, 2012Nov 1, 2021

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

Who buys my oilOil price check

359.88 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 359.88 and 360 acres. Use the acres from your own division order for the well you are paid on.

Check your decimal on this lease
Permits for Medina-Jonas Unit B
API numberWell no.Acreson the permit
42-255-338753H359.88
42-255-338784H359.88
42-255-334382H359.88
42-255-321411H360

SourceRailroad Commission drilling permits, Oct 3, 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 MEDINA-JONAS UNIT B
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20267528115013474$80.46$2.89
Jun 20262,1932,1696584754$84.81$3.15
May 20261,4951,4906164656$102.13$2.94
Apr 20262,4502,4211,19687317$100.32$2.77
Mar 20261,4121,3932571863$91.38$3.04
Feb 20268048001351052$64.51$3.62
Jan 20269369541741332$60.04$7.72
Dec 20251,4301,4412611992$57.97$4.26
Nov 20252,0922,1194032713$60.06$3.79
Oct 20252,7862,7625023264$60.89$3.19
Sep 20252,1052,1063722386$63.96$2.97
Aug 20252,3012,3061,43784025$64.86$2.91
Jul 20252,7022,7091,36676315$68.39$3.20
Jun 20253,2323,2171,58986214$68.17$3.02
May 20253,0803,0657854565$62.17$3.12
Apr 20252,4672,4804702893$63.54$3.42
Mar 20252,8392,8214122542$68.24$4.12
Feb 20252,1932,2181,2527707$71.53$4.19
Jan 20252,2062,2012,8851,75921$75.74$4.13
Dec 20242,4412,4474,1222,65119$70.12$3.01
Nov 20243,4933,4794,3342,89529$69.95$2.12
Oct 20242,2292,2314,5833,09421$71.99$2.20
Sep 20242,3492,3414,2212,94515$70.24$2.28
Aug 20242,1462,1364,7693,14827$76.68$1.99
Jul 20241,9781,9785,8423,92621$81.80$2.07
Jun 20241,7401,7522,8871,74212$79.77$2.54
May 20241,5211,5303,3172,05831$80.02$2.12
Apr 20242,1702,1593,7432,26084$85.35$1.60
Mar 20242,6602,6611,59199919$81.28$1.49
Feb 20242,3412,3382,25070779$77.25$1.72
Jan 20241,8611,8632,406874113$74.15$3.18
Dec 20232,1432,1434,9733,17663$71.90$2.52
Nov 20232,3572,3653,5582,06663$77.69$2.71
Oct 20232,9862,9924,2632,83551$85.64$2.98
Sep 20233,5063,5014,2882,78935$89.43$2.64
Aug 20232,8632,8583,6622,28451$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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Nearby

This lease belongs to

OperatorMarathon Oil Ef LLCFieldEagleville (Eagle Ford-2)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

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Eagleville (Eagle Ford-2) field

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