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Texas oil lease

Producing

MEDINA-JONAS UNIT A

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

7 wells

54,922bbl oil, last 12 months−23% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-09889

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
90,648 mcf
Oil in Jul 2026
3,461 bbl

Production by month

Oil output fell 23% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 23% over the last 12 monthsMonthly oil production and gas for MEDINA-JONAS UNIT A, Aug 2023 to Jul 2026. Oil output fell 23% over the last 12 months. 54,922 bbl in the 12 months through Jul 2026, against 71,176 bbl in the 12 months before.Last 12 months: 54,922 bblbbl per monthmcf per month002,5005,0005,00010k7,50015k10k20k12.5k25kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 23% over the last 12 monthsMonthly oil production and gas for MEDINA-JONAS UNIT A, Aug 2023 to Jul 2026. Oil output fell 23% over the last 12 months. 54,922 bbl in the 12 months through Jul 2026, against 71,176 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002,5005,0005,00010k7,50015k10k20k12.5k25kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

81% of the gas went to a processing plant in the last 12 months

Flaring peaked at 14.2% of the gas in Jan 2024.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
81% of the gas went to a processing plant in the last 12 monthsShare of MEDINA-JONAS UNIT A gas by disposition code each month, Aug 2023 to Jul 2026. 81% of the gas went to a processing plant in the last 12 months. Flaring peaked at 14.2% of the gas in Jan 2024.Share of the lease’s gas by disposition code, per month0%50%100%Flared 14.2%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
81% of the gas went to a processing plant in the last 12 monthsShare of MEDINA-JONAS UNIT A gas by disposition code each month, Aug 2023 to Jul 2026. 81% of the gas went to a processing plant in the last 12 months. Flaring peaked at 14.2% of the gas in Jan 2024.Share of gas by disposition code0%50%100%Flared 14.2%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    81% · 73,008 mcf

  • Lease fuel (1)

    19% · 16,775 mcf

  • Flared (4)

    1.0% · 865 mcf

1.0% of the gas flared in the last 12 months. 12 months above 3%.

7 wells on this lease

Wells on MEDINA-JONAS UNIT A
API numberWell no.Status
42-255-321111HShut-in
42-255-344442HActive
42-255-344463HActive
42-255-351074HActive
42-255-370305HActive
42-255-370316HActive
42-255-37297502HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCOilGathers20Nov 3, 2011–
Genesis Crude Oil, L.p.OilGathers20Jul 1, 2022–
Reynolds Energy Transport LLCOilGathers20Jul 1, 2022–
Shell Trading (Us) CompanyOilGathers20Nov 3, 2011–
Statewide Crude Inc.OilGathers20Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasGathers100Jul 1, 2022–
Genesis Crude Oil, L.p.OilGathers10Nov 3, 2011Jul 1, 2022
Gulfmark Energy, Inc.OilGathers35Nov 3, 2011Jul 1, 2022
Permian Crude Transport, LPOilGathers5Dec 1, 2016Jul 1, 2022
Statewide Crude Inc.OilGathers10Nov 3, 2011Jul 1, 2022

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

Who buys my oilOil price check

404.43 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 360 and 404.43 acres. Use the acres from your own division order for the well you are paid on.

  • Good to know

    7 wells are listed on this lease

    Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.

Check your decimal on this lease
Permits for Medina-Jonas Unit A
API numberWell no.Acreson the permit
42-255-37297502H404.43
42-255-370305H404.43
42-255-370316H404.43
42-255-351074H404.43
42-255-344463H404.43
42-255-344442H404.43
42-255-321111H360

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 A
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20263,4613,4534,7363,82217$80.46$2.89
Jun 20263,4993,5025,4884,45430$84.81$3.15
May 20263,8993,9357,0085,604132$102.13$2.94
Apr 20264,3594,3407,6445,972176$100.32$2.77
Mar 20265,0715,0497,5545,943100$91.38$3.04
Feb 20264,3664,3727,3405,88487$64.51$3.62
Jan 20264,8974,9039,1097,28799$60.04$7.72
Dec 20254,7694,75910,0288,05785$57.97$4.26
Nov 20256,6156,59311,7589,63138$60.06$3.79
Oct 20254,3074,3335,8984,91535$60.89$3.19
Sep 20254,9144,9205,8484,83217$63.96$2.97
Aug 20254,7654,7618,2376,60749$64.86$2.91
Jul 20255,6075,59211,0498,71256$68.39$3.20
Jun 20255,5295,5188,3756,72027$68.17$3.02
May 20254,2144,2156,2105,02112$62.17$3.12
Apr 20255,1645,1769,3197,55931$63.54$3.42
Mar 20256,2956,33011,3629,31427$68.24$4.12
Feb 20257,7807,74711,2569,33739$71.53$4.19
Jan 20257,4977,48910,4708,61348$75.74$4.13
Dec 20245,4475,4417,7146,31318$70.12$3.01
Nov 20246,1786,1799,6098,01724$69.95$2.12
Oct 20246,2516,25710,7378,97735$71.99$2.20
Sep 20245,4855,48912,92210,90321$70.24$2.28
Aug 20245,7295,76716,48613,73254$76.68$1.99
Jul 20247,2927,30313,5479,850591$81.80$2.07
Jun 20248,1018,11312,0648,914851$79.77$2.54
May 20248,0478,03412,77310,105797$80.02$2.12
Apr 20248,2508,27614,35411,0971,148$85.35$1.60
Mar 20249,3829,38113,52010,649606$81.28$1.49
Feb 20248,0028,02612,1317,0961,268$77.25$1.72
Jan 202410,22310,21713,9828,2501,986$74.15$3.18
Dec 202310,09110,07914,93710,387756$71.90$2.52
Nov 202310,99910,98218,96313,8271,245$77.69$2.71
Oct 202310,64410,63315,06811,037673$85.64$2.98
Sep 20238,6158,61912,7699,306745$89.43$2.64
Aug 20238,2318,26915,56812,440548$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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