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Texas oil lease

Producing

TUNNELL "18"

Tunnell "18" is an oil lease in Martin County, Texas, operated by Diamondback E&P LLC in the Spraberry (Trend Area) field.

3 wells

2,802bbl oil, last 12 months−32% vs prior year
Operator
Diamondback E&P LLC
County
Martin County
Field
Spraberry (Trend Area)
RRC lease
08-38376

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Where it sits

This county

Martin CountyMartinGainesAndrewsHowardDawsonBordenMartin County
Martin County
Oil in Jul 2026
167 bbl
Reporting since
Jan 2020

Production by month

Oil output fell 32% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 32% over the last 12 monthsMonthly oil production and gas for TUNNELL "18", Aug 2023 to Jul 2026. Oil output fell 32% over the last 12 months. 2,802 bbl in the 12 months through Jul 2026, against 4,151 bbl in the 12 months before.Last 12 months: 2,802 bblbbl per monthmcf per month002005004001,0006001,5008002,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 32% over the last 12 monthsMonthly oil production and gas for TUNNELL "18", Aug 2023 to Jul 2026. Oil output fell 32% over the last 12 months. 2,802 bbl in the 12 months through Jul 2026, against 4,151 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002005004001,0006001,5008002,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

All of the gas went to flaring in the 10 months reported

Flaring peaked at 100.0% of the gas in Aug 2023.

All of the gas went to flaring in the 10 months reportedShare of TUNNELL "18" gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to flaring in the 10 months reported. Flaring peaked at 100.0% of the gas in Aug 2023.Share of the lease’s gas by disposition code, per month0%50%100%Flared 100.0%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
All of the gas went to flaring in the 10 months reportedShare of TUNNELL "18" gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to flaring in the 10 months reported. Flaring peaked at 100.0% of the gas in Aug 2023.Share of gas by disposition code0%50%100%Flared 100.0%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

100.0% of the gas flared in the 10 months reported. 10 months above 3%.

Who has run this lease

The operator changed once, most recently in Jan 2025

Operators of this lease over timeEndeavor Energy Resources L.P., Jan 2020 to Dec 2024; Diamondback E&P LLC, Jan 2025 to Jul 20262020202120222023202420252026Changed Jan 2025Endeavor Energy Resources L.P.Jan 2020 to Dec 2024Diamondback E&P LLCJan 2025 to now
Operators of this lease over timeEndeavor Energy Resources L.P., Jan 2020 to Dec 2024; Diamondback E&P LLC, Jan 2025 to Jul 20262020202120222023202420252026Changed Jan 2025Endeavor Energy Resources L.P.Jan 2020 to Dec 2024Diamondback E&P LLCJan 2025 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

3 wells on this lease

Wells on TUNNELL "18"
API numberWell no.Status
42-317-348491Active
42-317-349412Active
42-317-401933Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Explore Logistics LLCOilGathers100Aug 1, 2025–
Et Gathering & Processing LLCCasinghead gasBuys100Mar 1, 2026–
Energy Transfer CompanyCasinghead gasGathers100Aug 1, 2025–
Etc Gas Processing, LLCCasinghead gasBuys100Aug 1, 2025Mar 1, 2026
Wtg Gas Processing, L.p.Casinghead gasGathers100Aug 26, 2007Aug 1, 2025
Wtg Gas Processing, L.p.Casinghead gasBuys100Nov 1, 2017Aug 1, 2025
Oasis Transp & Marketing Corp.OilGathers100Apr 1, 2018Aug 1, 2025

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

Who buys my oilOil price check

325.30 acres on the newest permit

Permits for Tunnell "18"
API numberWell no.Acreson the permit
42-317-348491325.30
42-317-349412325.30
42-317-401933325.30

SourceRailroad Commission drilling permits, Sep 26, 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 TUNNELL "18"
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Diamondback E&P1670000$80.46$2.89
Jun 2026Diamondback E&P205360000$84.81$3.15
May 2026Diamondback E&P251181000$102.13$2.94
Apr 2026Diamondback E&P157187000$100.32$2.77
Mar 2026Diamondback E&P174181000$91.38$3.04
Feb 2026Diamondback E&P163185000$64.51$3.62
Jan 2026Diamondback E&P1200000$60.04$7.72
Dec 2025Diamondback E&P157178000$57.97$4.26
Nov 2025Diamondback E&P340365000$60.06$3.79
Oct 2025Diamondback E&P270360000$60.89$3.19
Sep 2025Diamondback E&P330180000$63.96$2.97
Aug 2025Diamondback E&P468551000$64.86$2.91
Jul 2025Diamondback E&P219184000$68.39$3.20
Jun 2025Diamondback E&P364354000$68.17$3.02
May 2025Diamondback E&P335368000$62.17$3.12
Apr 2025Diamondback E&P284371000$63.54$3.42
Mar 2025Diamondback E&P245179000$68.24$4.12
Feb 2025Diamondback E&P285367000$71.53$4.19
Jan 2025Diamondback E&P344373000$75.74$4.13
Dec 2024Endeavor Energy381176000$70.12$3.01
Nov 2024Endeavor Energy338357000$69.95$2.12
Oct 2024Endeavor Energy4235391,11801,118$71.99$2.20
Sep 2024Endeavor Energy4595111,17601,176$70.24$2.28
Aug 2024Endeavor Energy474354000$76.68$1.99
Jul 2024Endeavor Energy7197041,34101,341$81.80$2.07
Jun 2024Endeavor Energy4835441,71101,711$79.77$2.54
May 2024Endeavor Energy520537000$80.02$2.12
Apr 2024Endeavor Energy5015131,28801,288$85.35$1.60
Mar 2024Endeavor Energy627701000$81.28$1.49
Feb 2024Endeavor Energy547369000$77.25$1.72
Jan 2024Endeavor Energy2733677070707$74.15$3.18
Dec 2023Endeavor Energy3593589060906$71.90$2.52
Nov 2023Endeavor Energy642539000$77.69$2.71
Oct 2023Endeavor Energy3533751,29501,295$85.64$2.98
Sep 2023Endeavor Energy3633539680968$89.43$2.64
Aug 2023Endeavor Energy5016841,32401,324$81.39$2.58

Flared above 3%

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 2026.

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Nearby

This lease belongs to

OperatorDiamondback E&P LLCFieldSpraberry (Trend Area)CountyMartin County

Diamondback E&P LLC in Martin County

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Spraberry (Trend Area) field

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