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Texas oil lease

Producing

DARLENE 1-STX

Darlene 1-STX is an oil lease in Frio County, Texas, operated by Formentera Operations LLC in the Indio Tanks (Pearsall) field.

1 well

37,304bbl oil, last 12 months
Operator
Formentera Operations LLC
County
Frio County
Field
Indio Tanks (Pearsall)
RRC lease
01-21467

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Where it sits

This county

Frio CountyFrioZavalaAtascosaUvaldeMedinaBexarFrio County
Frio County
Gas, last 12 months
291,320 mcf
Oil in Jul 2026
0 bbl

Checks stopped on this lease?

  • Sales

    Sales over the last 3 months fell to 0% of the 9 months before.

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

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Production by month

Oil output fell 100% since Jan 2025

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 100% since Jan 2025Monthly oil production and gas for DARLENE 1-STX, Jan 2025 to Jul 2026. Oil output fell 100% since Jan 2025. Monthly average of 13 bbl in the latest 3 months, against 17,168 bbl in the first 3.Last 12 months: 37,304 bblbbl per monthmcf per month0010k25k20k50k30k75k40k100kJan 25AprJulOctJan 26AprJul
Oil output fell 100% since Jan 2025Monthly oil production and gas for DARLENE 1-STX, Jan 2025 to Jul 2026. Oil output fell 100% since Jan 2025. Monthly average of 13 bbl in the latest 3 months, against 17,168 bbl in the first 3.Last 12 monthsbbl per monthmcf per month0010k25k20k50k30k75k40k100kJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

96% of the gas went to a transmission line in the last 12 months

Flaring peaked at 100.0% of the gas in Jan 2025.

  • Transmission line (2)
  • Lease fuel (1)
  • Flared (4)
96% of the gas went to a transmission line in the last 12 monthsShare of DARLENE 1-STX gas by disposition code each month, Jan 2025 to Jul 2026. 96% of the gas went to a transmission line in the last 12 months. Flaring peaked at 100.0% of the gas in Jan 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 100.0%Jan 25AprJulOctJan 26AprJul
96% of the gas went to a transmission line in the last 12 monthsShare of DARLENE 1-STX gas by disposition code each month, Jan 2025 to Jul 2026. 96% of the gas went to a transmission line in the last 12 months. Flaring peaked at 100.0% of the gas in Jan 2025.Share of gas by disposition code0%50%100%Flared 100.0%Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    96% · 468,977 mcf

  • Flared (4)

    3.7% · 17,896 mcf

  • Lease fuel (1)

    0.5% · 2,304 mcf

3.7% of the gas flared in the last 12 months. 5 months above 3%.

1 well on this lease

Wells on DARLENE 1-STX
API numberWell no.Status
42-163-34339N731HPActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Medallion Operating Company, LLCOilGathers100Jul 1, 2026–
Targa Midstream Services LLCCasinghead gasBuys100Jul 1, 2026–
Targa Midstream Services LLCCasinghead gasGathers100Aug 2, 2024–
Targa Midstream Services LLCCasinghead gasBuys100Aug 2, 2024Jul 1, 2026
Transoil Marketing, LLCOilGathers100Aug 2, 2024Jul 1, 2026

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

Who buys my oilOil price check

612.72 acres on the newest permit

Check your decimal on this lease
Permits for Darlene 1-STX
API numberWell no.Acreson the permit
42-163-34339N731HP612.72

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

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19 months, newest first

Ledger for DARLENE 1-STX
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026027000$80.46$2.89
Jun 20263912128653$84.81$3.15
May 202600000$102.13$2.94
Apr 202600000$100.32$2.77
Mar 20263,2964,11128,33927,33438$91.38$3.04
Feb 20263,0052,65328,38327,26956$64.51$3.62
Jan 20264,0514,30533,52833,216100$60.04$7.72
Dec 20254,2514,58434,41134,34269$57.97$4.26
Nov 20254,4344,19737,41637,295121$60.06$3.79
Oct 20255,4465,57440,46139,687774$60.89$3.19
Sep 20255,7285,57841,58241,466116$63.96$2.97
Aug 20257,0547,00847,07234,63412,438$64.86$2.91
Jul 20257,9608,56054,95154,082869$68.39$3.20
Jun 202510,0509,63562,71562,283432$68.17$3.02
May 202513,91113,59480,19177,3042,880$62.17$3.12
Apr 202516,69316,70076,97276,114831$63.54$3.42
Mar 202526,26226,30890,94083,9856,925$68.24$4.12
Feb 202520,24119,57548,8353,71945,116$71.53$4.19
Jan 20255,0015,0012,09502,095$75.74$4.13

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

OperatorFormentera Operations LLCFieldIndio Tanks (Pearsall)CountyFrio County

Formentera Operations LLC in Frio County

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Indio Tanks (Pearsall) field

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