Skip to content
Royalty Clerk

Texas oil lease

Producing

CHAPMAN HUMMEL-CARPENTER SA1

Chapman Hummel-Carpenter Sa1 is an oil lease in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

1 well

35,910bbl oil, last 12 months−57% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-12824

Is your check right?

Check my statement

Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
41,483 mcf
Oil in Jul 2026
2,616 bbl

Production by month

Oil output fell 57% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 57% over the last 12 monthsMonthly oil production and gas for CHAPMAN HUMMEL-CARPENTER SA1, Jul 2024 to Jul 2026. Oil output fell 57% over the last 12 months. 35,910 bbl in the 12 months through Jul 2026, against 83,580 bbl in the 12 months before.Last 12 months: 35,910 bblbbl per monthmcf per month005,0005,00010k10k15k15k20k20kJul 24OctJan 25AprJulOctJan 26AprJul
Oil output fell 57% over the last 12 monthsMonthly oil production and gas for CHAPMAN HUMMEL-CARPENTER SA1, Jul 2024 to Jul 2026. Oil output fell 57% over the last 12 months. 35,910 bbl in the 12 months through Jul 2026, against 83,580 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005,0005,00010k10k15k15k20k20kJul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

87% of the gas went to a processing plant in the last 12 months

Flaring peaked at 4.1% of the gas in Aug 2025.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
87% of the gas went to a processing plant in the last 12 monthsShare of CHAPMAN HUMMEL-CARPENTER SA1 gas by disposition code each month, Jul 2024 to Jul 2026. 87% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.1% of the gas in Aug 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 4.1%Jul 24OctJan 25AprJulOctJan 26AprJul
87% of the gas went to a processing plant in the last 12 monthsShare of CHAPMAN HUMMEL-CARPENTER SA1 gas by disposition code each month, Jul 2024 to Jul 2026. 87% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.1% of the gas in Aug 2025.Share of gas by disposition code0%50%100%Flared 4.1%Jul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    87% · 35,967 mcf

  • Lease fuel (1)

    12% · 5,026 mcf

  • Flared (4)

    1.2% · 490 mcf

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

1 well on this lease

Wells on CHAPMAN HUMMEL-CARPENTER SA1
API numberWell no.Status
42-255-380301HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Gulfmark Energy, Inc.OilGathers50Jul 18, 2024
Statewide Crude Inc.OilGathers50Jul 18, 2024
Marathon Oil Ef LLCCasinghead gasBuys100Jul 18, 2024
Marathon Oil Ef LLCCasinghead gasGathers100Jul 18, 2024

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

Who buys my oilOil price check

496.01 acres on the newest permit

  • Worth asking

    An allocation well is on this lease

    A well drilled across several tracts shares its production by an allocation formula, so the decimal is not always your acres over the unit acres. Ask the operator for the allocation formula and the tract factor for your land.

  • Worth asking

    A Rule 37 case is listed

    The RRC permit records list a Rule 37 case. This does not establish your royalty share. Ask for the permit and unit plat for your well.

Check your decimal on this lease
Permits for Chapman Hummel-Carpenter Sa1
API numberWell no.Acreson the permit
42-255-380301H496.01

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

25 months, newest first

Ledger for CHAPMAN HUMMEL-CARPENTER SA1
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20262,6162,5982,4982,10721$80.46$2.89
Jun 20262,3762,3763,0302,55611$84.81$3.15
May 20262,1612,1781,8331,50716$102.13$2.94
Apr 20262,9862,9813,6333,25214$100.32$2.77
Mar 20263,3853,3964,0973,71517$91.38$3.04
Feb 20262,7782,7502,4812,22814$64.51$3.62
Jan 20263,0803,1042,4642,2519$60.04$7.72
Dec 20252,8172,8103,4302,88827$57.97$4.26
Nov 20253,3503,3544,2083,56256$60.06$3.79
Oct 20253,5423,5414,6924,21127$60.89$3.19
Sep 20253,1853,1994,1133,57874$63.96$2.97
Aug 20253,6343,6125,0044,112204$64.86$2.91
Jul 20253,7983,7956,1415,088186$68.39$3.20
Jun 20253,9313,9246,1765,294176$68.17$3.02
May 20254,0274,0225,9225,118109$62.17$3.12
Apr 20254,5584,5617,4176,364151$63.54$3.42
Mar 20254,9144,9216,6505,715159$68.24$4.12
Feb 20254,8454,8977,1135,95872$71.53$4.19
Jan 20255,7655,7679,1557,596179$75.74$4.13
Dec 20246,0846,0869,7008,26964$70.12$3.01
Nov 20247,6557,65812,12110,556130$69.95$2.12
Oct 20249,4069,42914,06812,178249$71.99$2.20
Sep 202412,59512,65615,90613,884340$70.24$2.28
Aug 202416,00215,96615,98813,945202$76.68$1.99
Jul 202412,79312,65711,5409,783450$81.80$2.07

Flared above 3%

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

How to check your stub against this lease Checks stopped on this lease? See the likely reasons

Do your checks match this lease?

Check my statement

Nearby

This lease belongs to

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

Marathon Oil Ef LLC in Karnes County

All Marathon Oil Ef LLC leases →

Eagleville (Eagle Ford-2) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km