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Texas oil lease

Producing

WELDER, J.F. HEIRS

Welder, J.f. Heirs is an oil lease in San Patricio County, Texas, operated by Proline Energy Resources Inc in the Angelita New (Frio) field.

2 wells

767bbl oil, last 12 months+16% vs prior year
Operator
Proline Energy Resources Inc
County
San Patricio County
Field
Angelita New (Frio)
RRC lease
04-12778

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Where it sits

This county

San Patricio CountySan PatricioGoliadAransasRefugioNuecesBeeJim WellsLive OakSan Patricio County
San Patricio County
Gas, last 12 months
3,473 mcf
Oil in Jul 2026
28 bbl

Checks stopped on this lease?

  • Operator

    Operator changed: Proline Energy Resources Inc took over from Urban Oil & Gas Group, LLC in May 2026.

  • Buyer

    Buyer changed: PROLINE ENERGY RESOURCES INC replaced ENTERPRISE HYDROCARBONS, L.P. as the buyer of this lease's gas from oil wells on May 1, 2026.

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

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Production by month

Oil output rose 16% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 16% over the last 12 monthsMonthly oil production and gas for WELDER, J.F. HEIRS, Aug 2023 to Jul 2026. Oil output rose 16% over the last 12 months. 767 bbl in the 12 months through Jul 2026, against 663 bbl in the 12 months before.Last 12 months: 767 bblbbl per monthmcf per month0050200100400150600200800Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 16% over the last 12 monthsMonthly oil production and gas for WELDER, J.F. HEIRS, Aug 2023 to Jul 2026. Oil output rose 16% over the last 12 months. 767 bbl in the 12 months through Jul 2026, against 663 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0050200100400150600200800Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Jun 2025 the lease's gas goes to a transmission line instead of lease fuel

  • Transmission line (2)
  • Lease fuel (1)
Since Jun 2025 the lease's gas goes to a transmission line instead of lease fuelShare of WELDER, J.F. HEIRS gas by disposition code each month, Aug 2023 to Jul 2026. Since Jun 2025 the lease's gas goes to a transmission line instead of lease fuel.Share of the lease’s gas by disposition code, per month0%50%100%Jun 2025: fuel to lineOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Jun 2025 the lease's gas goes to a transmission line instead of lease fuelShare of WELDER, J.F. HEIRS gas by disposition code each month, Aug 2023 to Jul 2026. Since Jun 2025 the lease's gas goes to a transmission line instead of lease fuel.Share of gas by disposition code0%50%100%Jun 25: fuel to lineJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    63% · 2,500 mcf

  • Lease fuel (1)

    37% · 1,438 mcf

Who has run this lease

The operator changed once, most recently in May 2026

Operators of this lease over timeUrban Oil & Gas Group, LLC, Jan 2020 to Apr 2026; Proline Energy Resources Inc, May 2026 to Jul 20262020202120222023202420252026Changed May 2026Urban Oil & Gas Group, LLCJan 2020 to Apr 2026Proline Energy Resources IncMay 2026 to now
Operators of this lease over timeUrban Oil & Gas Group, LLC, Jan 2020 to Apr 2026; Proline Energy Resources Inc, May 2026 to Jul 20262020202120222023202420252026Changed May 2026Urban Oil & Gas Group, LLCJan 2020 to Apr 2026Proline Energy Resources IncMay 2026 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

2 wells on this lease

Wells on WELDER, J.F. HEIRS
API numberWell no.Status
42-409-03850S 1Active
42-409-03870F 1Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Gulfmark Energy, Inc.OilGathers100Jul 1, 2022–
Proline Energy Resources INCCasinghead gasBuys100May 1, 2026–
Proline Energy Resources INCCasinghead gasGathers100May 1, 2026–
Urban Oil & Gas Group, LLCCasinghead gasGathers100Jul 1, 2014May 1, 2026
Enterprise Hydrocarbons, L.p.Casinghead gasBuys100Jul 1, 2022May 1, 2026
Total Gas & Power Na, Inc.Casinghead gasBuys100May 1, 2020Jul 1, 2022
Shell Trading (Us) CompanyOilGathers100Dec 1, 2021Jul 1, 2022
Sunoco Ptnrs. Mktg.&terminals LPOilGathers100May 1, 2020Dec 1, 2021
Cima Energy, Ltd.Casinghead gasBuys100Apr 1, 2017May 1, 2020

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

Who buys my oilOil price check

308 acres on the newest permit

Check your decimal on this lease
Permits for Welder, J.f. Heirs
API numberWell no.Acreson the permit
42-409-03870F 1308
42-409-03850S 1308

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

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36 months, newest first

Ledger for WELDER, J.F. HEIRS
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Proline Energy2818000$80.46$2.89
Jun 2026Proline Energy00430$84.81$3.15
May 2026Proline Energy3111346290$102.13$2.94
Apr 2026Urban Oil751702951840$100.32$2.77
Mar 2026Urban Oil7404562870$91.38$3.04
Feb 2026Urban Oil6604202730$64.51$3.62
Jan 2026Urban Oil791793942550$60.04$7.72
Dec 2025Urban Oil7604623330$57.97$4.26
Nov 2025Urban Oil631714473080$60.06$3.79
Oct 2025Urban Oil8102421590$60.89$3.19
Sep 2025Urban Oil871714322620$63.96$2.97
Aug 2025Urban Oil10702751480$64.86$2.91
Jul 2025Urban Oil004652590$68.39$3.20
Jun 2025Urban Oil004502250$68.17$3.02
May 2025Urban Oil504652200$62.17$3.12
Apr 2025Urban Oil831734502290$63.54$3.42
Mar 2025Urban Oil5604653230$68.24$4.12
Feb 2025Urban Oil711714202220$71.53$4.19
Jan 2025Urban Oil771664562370$75.74$4.13
Dec 2024Urban Oil5504652430$70.12$3.01
Nov 2024Urban Oil8404502330$69.95$2.12
Oct 2024Urban Oil721654652420$71.99$2.20
Sep 2024Urban Oil8404502150$70.24$2.28
Aug 2024Urban Oil7604211790$76.68$1.99
Jul 2024Urban Oil73173197930$81.80$2.07
Jun 2024Urban Oil7501971030$79.77$2.54
May 2024Urban Oil173173124710$80.02$2.12
Apr 2024Urban Oil950120680$85.35$1.60
Mar 2024Urban Oil77166106520$81.28$1.49
Feb 2024Urban Oil159159121700$77.25$1.72
Jan 2024Urban Oil9701621000$74.15$3.18
Dec 2023Urban Oil460142870$71.90$2.52
Nov 2023Urban Oil001790$77.69$2.71
Oct 2023Urban Oil8605273160$85.64$2.98
Sep 2023Urban Oil1751754713270$89.43$2.64
Aug 2023Urban Oil004712810$81.39$2.58

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

OperatorProline Energy Resources IncFieldAngelita New (Frio)CountySan Patricio County

Proline Energy Resources Inc in San Patricio County

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Angelita New (Frio) field

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