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Texas oil lease

Producing

THELMA LOU

Thelma Lou is an oil lease in Ector County, Texas, operated by Diamondback E&P LLC in the Sallie Ann (Spraberry-Wolfcamp) field.

5 wells

10,502bbl oil, last 12 months+12% vs prior year
Operator
Diamondback E&P LLC
County
Ector County
Field
Sallie Ann (Spraberry-Wolfcamp)
RRC lease
08-38904

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Where it sits

This county

Ector CountyEctorMartinMidlandAndrewsWinklerWardEctor County
Ector County
Gas, last 12 months
19,871 mcf
Oil in Jul 2026
670 bbl

Production by month

Oil output rose 12% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 12% over the last 12 monthsMonthly oil production and gas for THELMA LOU, Aug 2023 to Jul 2026. Oil output rose 12% over the last 12 months. 10,502 bbl in the 12 months through Jul 2026, against 9,348 bbl in the 12 months before.Last 12 months: 10,502 bblbbl per monthmcf per month005001,0001,0002,0001,5003,0002,0004,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 12% over the last 12 monthsMonthly oil production and gas for THELMA LOU, Aug 2023 to Jul 2026. Oil output rose 12% over the last 12 months. 10,502 bbl in the 12 months through Jul 2026, against 9,348 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005001,0001,0002,0001,5003,0002,0004,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

66% of the gas went to a transmission line in the last 12 months

Flaring peaked at 98.1% of the gas in Jun 2025.

  • Transmission line (2)
  • Lease fuel (1)
  • Flared (4)
66% of the gas went to a transmission line in the last 12 monthsShare of THELMA LOU gas by disposition code each month, Aug 2023 to Jul 2026. 66% of the gas went to a transmission line in the last 12 months. Flaring peaked at 98.1% of the gas in Jun 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 98.1%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
66% of the gas went to a transmission line in the last 12 monthsShare of THELMA LOU gas by disposition code each month, Aug 2023 to Jul 2026. 66% of the gas went to a transmission line in the last 12 months. Flaring peaked at 98.1% of the gas in Jun 2025.Share of gas by disposition code0%50%100%Flared 98.1%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    66% · 14,111 mcf

  • Flared (4)

    34% · 7,325 mcf

34.2% of the gas flared in the last 12 months. 11 months above 3%.

Who has run this lease

The operator changed once, most recently in Dec 2022

Operators of this lease over timeFirebird Energy LLC, Jan 2020 to Nov 2022; Diamondback E&P LLC, Dec 2022 to Jul 20262020202120222023202420252026Changed Dec 2022Firebird Energy LLCJan 2020 to Nov 2022Diamondback E&P LLCDec 2022 to now
Operators of this lease over timeFirebird Energy LLC, Jan 2020 to Nov 2022; Diamondback E&P LLC, Dec 2022 to Jul 20262020202120222023202420252026Changed Dec 2022Firebird Energy LLCJan 2020 to Nov 2022Diamondback E&P LLCDec 2022 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

5 wells on this lease

Wells on THELMA LOU
API numberWell no.Status
42-135-394032Active
42-135-398867Active
42-135-4000313Active
42-135-4000411Active
42-135-419191Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCOilGathers100Sep 1, 2019–
Dcp Operating Company, LPCasinghead gasBuys100Jul 1, 2019–
Dcp Operating Company, LPCasinghead gasGathers100Apr 1, 2017–
Rio Energy International, Inc.OilGathers100Sep 1, 2018Sep 1, 2019
Cokinos Energy, L.l.c.Casinghead gasBuys100Aug 31, 2016Jul 1, 2019

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

Who buys my oilOil price check

667 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 646.48 and 667 acres. Use the acres from your own division order for the well you are paid on.

  • 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 Thelma Lou
API numberWell no.Acreson the permit
42-135-419191667
42-135-4000313667
42-135-4000411667
42-135-398867667
42-135-394032646.48

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

Unit decimal checker

What Diamondback Energy, Inc. told investors it received

Diamondback E&P LLC is linked to Diamondback Energy, Inc. (FANG).
Realized prices reported by Diamondback Energy, Inc.
QuarterOil$ per bblFiling
Q2 2026$96.82SEC filing
Q1 2026$73.47SEC filing
Q4 2025$58.00SEC filing
Q3 2025$64.60SEC filing
Q2 2025$63.23SEC filing
Q1 2025$70.95SEC filing

SourceDiamondback Energy, Inc. quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

36 months, newest first

Ledger for THELMA LOU
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Diamondback E&P6707421,7121,583129$80.46$2.89
Jun 2026Diamondback E&P7227871,693811882$84.81$3.15
May 2026Diamondback E&P1,1821,1642,6361,3901,246$102.13$2.94
Apr 2026Diamondback E&P1,5531,4681,842960882$100.32$2.77
Mar 2026Diamondback E&P1,1841,0721,4882791,209$91.38$3.04
Feb 2026Diamondback E&P5395001,355472883$64.51$3.62
Jan 2026Diamondback E&P5557691,7741,085689$60.04$7.72
Dec 2025Diamondback E&P1,2691,1132,3312,3310$57.97$4.26
Nov 2025Diamondback E&P1,8162,1842,6682,421247$60.06$3.79
Oct 2025Diamondback E&P8674641,560666894$60.89$3.19
Sep 2025Diamondback E&P1451918128120$63.96$2.97
Aug 2025Diamondback E&P00000$64.86$2.91
Jul 2025Diamondback E&P7437971,5651,301264$68.39$3.20
Jun 2025Diamondback E&P7355971,053201,033$68.17$3.02
May 2025Diamondback E&P12085025020$62.17$3.12
Apr 2025Diamondback E&P8278301,7131,7130$63.54$3.42
Mar 2025Diamondback E&P1,0921,0202,3412,3410$68.24$4.12
Feb 2025Diamondback E&P9539642,0182,0180$71.53$4.19
Jan 2025Diamondback E&P9608782,0602,0600$75.74$4.13
Dec 2024Diamondback E&P4001,0291,0290$70.12$3.01
Nov 2024Diamondback E&P1,3241,6022,6652,6650$69.95$2.12
Oct 2024Diamondback E&P1,4581,3493,1323,1320$71.99$2.20
Sep 2024Diamondback E&P6574951,5711,5710$70.24$2.28
Aug 2024Diamondback E&P5586351,3501,3500$76.68$1.99
Jul 2024Diamondback E&P7308091,7291,6220$81.80$2.07
Jun 2024Diamondback E&P6756141,7921,6400$79.77$2.54
May 2024Diamondback E&P6015552,2501,9860$80.02$2.12
Apr 2024Diamondback E&P6917872,6862,2600$85.35$1.60
Mar 2024Diamondback E&P1,0659583,1202,6850$81.28$1.49
Feb 2024Diamondback E&P7367831,7491,4960$77.25$1.72
Jan 2024Diamondback E&P5515281,8651,5160$74.15$3.18
Dec 2023Diamondback E&P8018473,2542,6350$71.90$2.52
Nov 2023Diamondback E&P6446473,1992,5380$77.69$2.71
Oct 2023Diamondback E&P6948673,0702,4890$85.64$2.98
Sep 2023Diamondback E&P9567913,1762,9410$89.43$2.64
Aug 2023Diamondback E&P9891,0462,3512,3510$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

OperatorDiamondback E&P LLCFieldSallie Ann (Spraberry-Wolfcamp)CountyEctor County

Diamondback E&P LLC in Ector County

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Sallie Ann (Spraberry-Wolfcamp) field

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