Skip to content
Royalty Clerk

Texas oil lease

Producing

BARNHART (EF) H UNIT SA3

Barnhart (Ef) H Unit Sa3 is an oil lease in Gonzales County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

1 well

78,442bbl oil, last 12 months
Operator
Marathon Oil Ef LLC
County
Gonzales County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-21670

Is your check right?

Check my statement

Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County
Gas, last 12 months
54,383 mcf
Oil in Jul 2026
2,392 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.

  • Sales

    Sales over the last 3 months fell to 19% of the 9 months before.

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 fell 93% since Feb 2025

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 93% since Feb 2025Monthly oil production and gas for BARNHART (EF) H UNIT SA3, Feb 2025 to Jul 2026. Oil output fell 93% since Feb 2025. Monthly average of 1,583 bbl in the latest 3 months, against 22,612 bbl in the first 3.Last 12 months: 78,442 bblbbl per monthmcf per month0010k5,00020k10k30k15k40k20kApr 25JulOctJan 26AprJul
Oil output fell 93% since Feb 2025Monthly oil production and gas for BARNHART (EF) H UNIT SA3, Feb 2025 to Jul 2026. Oil output fell 93% since Feb 2025. Monthly average of 1,583 bbl in the latest 3 months, against 22,612 bbl in the first 3.Last 12 monthsbbl per monthmcf per month0010k5,00020k10k30k15k40k20kJul 25Jan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

85% of the gas went to a processing plant in the last 12 months

Flaring peaked at 4.0% of the gas in May 2026.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
85% of the gas went to a processing plant in the last 12 monthsShare of BARNHART (EF) H UNIT SA3 gas by disposition code each month, Feb 2025 to Jul 2026. 85% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.0% of the gas in May 2026.Share of the lease’s gas by disposition code, per month0%50%100%Flared 4.0%Apr 25JulOctJan 26AprJul
85% of the gas went to a processing plant in the last 12 monthsShare of BARNHART (EF) H UNIT SA3 gas by disposition code each month, Feb 2025 to Jul 2026. 85% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.0% of the gas in May 2026.Share of gas by disposition code0%50%100%Flared 4.0%Jul 25Jan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    85% · 46,331 mcf

  • Lease fuel (1)

    12% · 6,575 mcf

  • Flared (4)

    2.7% · 1,477 mcf

2.7% of the gas flared in the last 12 months. 5 months above 3%.

1 well on this lease

Wells on BARNHART (EF) H UNIT SA3
API numberWell no.Status
42-177-347083HActive

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 gasGathers100Aug 7, 2024Sep 1, 2026
Marathon Oil Ef LLCCasinghead gasBuys100Aug 7, 2024Sep 1, 2026
Enterprise Crude Oil LLCOilGathers16.60Aug 7, 2024Sep 1, 2026
Phillips 66 CompanyOilGathers16.60Aug 7, 2024Sep 1, 2026
Reynolds Energy Transport LLCOilGathers16.60Aug 7, 2024Sep 1, 2026
Shell Trading (Us) CompanyOilGathers16.60Aug 7, 2024Sep 1, 2026

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

Who buys my oilOil price check

7,471.27 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 Barnhart (Ef) H Unit Sa3
API numberWell no.Acreson the permit
42-177-347083H7,471.27

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

18 months, newest first

Ledger for BARNHART (EF) H UNIT SA3
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20262,3922,38899383319$80.46$2.89
Jun 20262,0642,02189975034$84.81$3.15
May 20262923461251035$102.13$2.94
Apr 20262,9423,0912,4892,08596$100.32$2.77
Mar 20269,7049,6975,9274,872104$91.38$3.04
Feb 202612,56212,4743,7933,211104$64.51$3.62
Jan 20266,1926,1774,3253,636135$60.04$7.72
Dec 20256,6646,6913,8933,27989$57.97$4.26
Nov 20257,2057,2355,6264,817155$60.06$3.79
Oct 20258,6868,6366,8396,035112$60.89$3.19
Sep 20258,9519,0059,9308,600265$63.96$2.97
Aug 202510,78810,8139,5448,110359$64.86$2.91
Jul 202512,78912,84013,20011,91786$68.39$3.20
Jun 202514,43414,40712,46611,226103$68.17$3.02
May 202520,51920,48913,41312,088101$62.17$3.12
Apr 202520,67120,71813,21511,976169$63.54$3.42
Mar 202526,45726,39216,69915,325283$68.24$4.12
Feb 202520,70720,54612,04111,161162$71.53$4.19

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-1)CountyGonzales County

Marathon Oil Ef LLC in Gonzales County

All Marathon Oil Ef LLC leases →

Eagleville (Eagle Ford-1) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km