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Texas oil lease

Producing

IRONWOOD A4 UNIT

Ironwood A4 Unit is an oil lease in Frio County, Texas, operated by U.S. Energy Development Corp in the Briscoe Ranch (Eagleford) field.

1 well

7,697bbl oil, last 12 months−8% vs prior year
Operator
U.S. Energy Development Corp
County
Frio County
Field
Briscoe Ranch (Eagleford)
RRC lease
01-18899

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Where it sits

This county

Frio CountyFrioZavalaAtascosaUvaldeMedinaBexarFrio County
Frio County
Gas, last 12 months
4,083 mcf
Oil in Jul 2026
635 bbl

Checks stopped on this lease?

  • Buyer

    Buyer changed: ENTERPRISE HYDROCARBONS, L.P. replaced WILLIAMS MLP OPERATING LLC as the buyer of this lease's gas from oil wells on Oct 1, 2024.

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

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Production by month

Oil output fell 8% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 8% over the last 12 monthsMonthly oil production and gas for IRONWOOD A4 UNIT, Aug 2023 to Jul 2026. Oil output fell 8% over the last 12 months. 7,697 bbl in the 12 months through Jul 2026, against 8,348 bbl in the 12 months before.Last 12 months: 7,697 bblbbl per monthmcf per month002502005004007506001,000800Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 8% over the last 12 monthsMonthly oil production and gas for IRONWOOD A4 UNIT, Aug 2023 to Jul 2026. Oil output fell 8% over the last 12 months. 7,697 bbl in the 12 months through Jul 2026, against 8,348 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002502005004007506001,000800Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Mar 2026 the lease's gas goes to lease fuel instead of a transmission line

Flaring peaked at 32.4% of the gas in Jan 2025.

  • Transmission line (2)
  • Lease fuel (1)
  • Flared (4)
Since Mar 2026 the lease's gas goes to lease fuel instead of a transmission lineShare of IRONWOOD A4 UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2026 the lease's gas goes to lease fuel instead of a transmission line. Flaring peaked at 32.4% of the gas in Jan 2025.Share of the lease’s gas by disposition code, per month0%50%100%Mar 2026: line to fuelFlared 32.4%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Mar 2026 the lease's gas goes to lease fuel instead of a transmission lineShare of IRONWOOD A4 UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2026 the lease's gas goes to lease fuel instead of a transmission line. Flaring peaked at 32.4% of the gas in Jan 2025.Share of gas by disposition code0%50%100%Mar 26: line to fuelFlared 32.4%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Lease fuel (1)

    49% · 1,994 mcf

  • Transmission line (2)

    49% · 1,987 mcf

  • Flared (4)

    2.5% · 102 mcf

2.5% of the gas flared in the last 12 months. 7 months above 3%.

1 well on this lease

Wells on IRONWOOD A4 UNIT
API numberWell no.Status
42-163-33974A 4EFActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Plains Marketing, L.p.OilGathers100Sep 1, 2025–
Enterprise Hydrocarbons, L.p.Casinghead gasBuys100Oct 1, 2024–
Williams Mlp Operating LLCCasinghead gasGathers100Aug 30, 2021–
Apricus Enterprises, LLCOilGathers100Jan 1, 2025Sep 1, 2025
4J Energy, LLCOilGathers100Oct 1, 2024Jan 1, 2025
Williams Mlp Operating LLCCasinghead gasBuys100Aug 30, 2021Oct 1, 2024
Harvest Marketing & Trading, LLCOilGathers100Feb 1, 2023Oct 1, 2024
Shell Trading (Us) CompanyOilGathers100Aug 30, 2021Feb 1, 2023
Ace Gathering, Inc.OilGathers50May 1, 2020Aug 30, 2021

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

Who buys my oilOil price check

546.69 acres on the newest permit

  • 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 Ironwood A4 Unit
API numberWell no.Acreson the permit
42-163-33974A 4EF546.69

SourceRailroad Commission drilling permits, Oct 3, 2026 (source 1, source 2).

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36 months, newest first

Ledger for IRONWOOD A4 UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20266356613721440$80.46$2.89
Jun 20266215013191174$84.81$3.15
May 202664067334012438$102.13$2.94
Apr 20266226303201252$100.32$2.77
Mar 20266576213211400$91.38$3.04
Feb 20266076293151623$64.51$3.62
Jan 202676778137624616$60.04$7.72
Dec 20255446062441328$57.97$4.26
Nov 20256204753261504$60.06$3.79
Oct 20256487803892053$60.89$3.19
Sep 202566964136525015$63.96$2.97
Aug 20256676763961929$64.86$2.91
Jul 20256676763961929$68.39$3.20
Jun 20256816713851870$68.17$3.02
May 202569069043923311$62.17$3.12
Apr 202568562143923311$63.54$3.42
Mar 20257036084182120$68.24$4.12
Feb 20256556923831730$71.53$4.19
Jan 202570469137349121$75.74$4.13
Dec 2024715879195230$70.12$3.01
Nov 20247136843912321$69.95$2.12
Oct 20247466853952425$71.99$2.20
Sep 20246096874022211$70.24$2.28
Aug 202478067351520652$76.68$1.99
Jul 202472490645813371$81.80$2.07
Jun 20247185494051650$79.77$2.54
May 20247467284672067$80.02$2.12
Apr 20247307354672134$85.35$1.60
Mar 20247706894912213$81.28$1.49
Feb 20247468844793060$77.25$1.72
Jan 20248367184372350$74.15$3.18
Dec 20237939245153060$71.90$2.52
Nov 20237777103291000$77.69$2.71
Oct 202363368049721611$85.64$2.98
Sep 20237947285102634$89.43$2.64
Aug 20238209065252188$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

OperatorU.S. Energy Development CorpFieldBriscoe Ranch (Eagleford)CountyFrio County

U.S. Energy Development Corp in Frio County

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Briscoe Ranch (Eagleford) field

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