Skip to content
Royalty Clerk

Texas oil lease

Producing

BARNHART (EF)-HFS SA4

Barnhart (Ef)-HFS Sa4 is an oil lease in Gonzales County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

1 well

98,346bbl oil, since Sep 2025
Operator
Marathon Oil Ef LLC
County
Gonzales County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-13134

Is your check right?

Check my statement

Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County
Gas, since Sep 2025
41,164 mcf
Oil in Jul 2026
9,126 bbl

Checks stopped on this lease?

  • Buyer

    Buyer changed: ENSIGN NATURAL RESOURCES II LLC replaced MARATHON OIL EF LLC as the buyer of this lease's gas from oil wells on Sep 1, 2026.

SourceRailroad Commission production, P-5 and P-4 records, data through Jul 2026.

See why checks stop on this lease

Production by month

Oil output rose 47% since Sep 2025

  • Oil (bars)
  • Gas (line)
Oil output rose 47% since Sep 2025Monthly oil production and gas for BARNHART (EF)-HFS SA4, Sep 2025 to Jul 2026. Oil output rose 47% since Sep 2025. Monthly average of 10,418 bbl in the latest 3 months, against 7,094 bbl in the first 3.bbl per monthmcf per month002,5002,0005,0004,0007,5006,00010k8,00012.5k10kOct 25Jan 26AprJul
Oil output rose 47% since Sep 2025Monthly oil production and gas for BARNHART (EF)-HFS SA4, Sep 2025 to Jul 2026. Oil output rose 47% since Sep 2025. Monthly average of 10,418 bbl in the latest 3 months, against 7,094 bbl in the first 3.bbl per monthmcf per month002,5002,0005,0004,0007,5006,00010k8,00012.5k10kJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

84% of the gas went to a processing plant in the 11 months reported

Flaring peaked at 4.2% of the gas in May 2026.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
84% of the gas went to a processing plant in the 11 months reportedShare of BARNHART (EF)-HFS SA4 gas by disposition code each month, Sep 2025 to Jul 2026. 84% of the gas went to a processing plant in the 11 months reported. Flaring peaked at 4.2% of the gas in May 2026.Share of the lease’s gas by disposition code, per month0%50%100%Flared 4.2%Oct 25Jan 26AprJul
84% of the gas went to a processing plant in the 11 months reportedShare of BARNHART (EF)-HFS SA4 gas by disposition code each month, Sep 2025 to Jul 2026. 84% of the gas went to a processing plant in the 11 months reported. Flaring peaked at 4.2% of the gas in May 2026.Share of gas by disposition code0%50%100%Flared 4.2%Jan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    84% · 34,697 mcf

  • Lease fuel (1)

    13% · 5,259 mcf

  • Flared (4)

    2.9% · 1,208 mcf

2.9% of the gas flared in the 11 months reported. 4 months above 3%.

1 well on this lease

Wells on BARNHART (EF)-HFS SA4
API numberWell no.Status
42-177-34751131HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Mv Purchasing, LLCOilGathers34Sep 1, 2026–
Plains Marketing, L.p.OilGathers33Sep 1, 2026–
Shell Trading (Us) CompanyOilGathers33Sep 1, 2026–
Ensign Natural Resources II LLCCasinghead gasBuys100Sep 1, 2026–
Ensign Natural Resources II LLCCasinghead gasGathers100Sep 1, 2026–
Marathon Oil Ef LLCCasinghead gasGathers100Apr 26, 2025Sep 1, 2026
Marathon Oil Ef LLCCasinghead gasBuys100Apr 26, 2025Sep 1, 2026
Endeavor Crude, LLCOilGathers33Apr 26, 2025Sep 1, 2026
Enterprise Crude Oil LLCOilGathers34Apr 26, 2025Sep 1, 2026
Trafigura Trading LLCOilGathers33Apr 26, 2025Sep 1, 2026

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

Who buys my oilOil price check

7,129.80 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.

Check your decimal on this lease
Permits for Barnhart (Ef)-HFS Sa4
API numberWell no.Acreson the permit
42-177-34751131H7,129.80

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

11 months, newest first

Ledger for BARNHART (EF)-HFS SA4
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20269,1269,1684,6073,86588$80.46$2.89
Jun 202610,22610,2145,3674,478205$84.81$3.15
May 202611,90211,9015,8074,774245$102.13$2.94
Apr 202611,31011,2245,7464,814221$100.32$2.77
Mar 20266,7606,7433,4792,86061$91.38$3.04
Feb 20268,0088,0581,7501,48148$64.51$3.62
Jan 20269,7599,7283,3742,836106$60.04$7.72
Dec 20259,9739,9881,2371,04228$57.97$4.26
Nov 20259,2599,2672,9212,50180$60.06$3.79
Oct 20259,5449,4025,5644,91091$60.89$3.19
Sep 20252,4792,4501,3121,13635$63.96$2.97

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)CountyGonzales County

Marathon Oil Ef LLC in Gonzales 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