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Texas oil lease

Producing

SUNDOWN, NE. (SAN ANDRES) UNIT

Sundown, Ne. (San Andres) Unit is an oil lease in Hockley County, Texas, operated by Aviator Energy, LLC in the Slaughter field.

20 wells

1,425bbl oil, last 12 months−53% vs prior year
Operator
Aviator Energy, LLC
County
Hockley County
Field
Slaughter
RRC lease
8A-64587

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Where it sits

This county

Hockley CountyHockleyHaleCochranLambLubbockBaileyHockley County
Hockley County
Oil in Jun 2026
103 bbl
Reporting since
Jan 2020

Checks stopped on this lease?

  • Operator

    Operator changed: Aviator Energy, LLC took over from Sierra Lima Oil & Gas, LLC in Dec 2025.

  • P-5

    The previous operator's P-5 registration is listed as inactive since Sep 1, 2026 (last P-5 filed Oct 7, 2025).

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

See why checks stop on this lease

Production by month

Oil output fell 53% over the last 12 months

Jul 2026 was not reported.

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 53% over the last 12 monthsMonthly oil production and gas for SUNDOWN, NE. (SAN ANDRES) UNIT, Aug 2023 to Jul 2026. Oil output fell 53% over the last 12 months. 1,202 bbl in the 12 months through Jul 2026, against 2,546 bbl in the 12 months before.Last 12 months: 1,202 bblbbl per monthmcf per month001000200130014001Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 53% over the last 12 monthsMonthly oil production and gas for SUNDOWN, NE. (SAN ANDRES) UNIT, Aug 2023 to Jul 2026. Oil output fell 53% over the last 12 months. 1,202 bbl in the 12 months through Jul 2026, against 2,546 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001000200130014001Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

All of the gas went to lease fuel in the 2 months reported

All of the gas went to lease fuel in the 2 months reportedShare of SUNDOWN, NE. (SAN ANDRES) UNIT gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to lease fuel in the 2 months reported.Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
All of the gas went to lease fuel in the 2 months reportedShare of SUNDOWN, NE. (SAN ANDRES) UNIT gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to lease fuel in the 2 months reported.Share of gas by disposition code0%50%100%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Who has run this lease

The operator changed 2 times, most recently in Dec 2025

Operators of this lease over timeTexland Petroleum, L.P., Jan 2020 to Sep 2023; Sierra Lima Oil & Gas, LLC, Oct 2023 to Nov 2025; Aviator Energy, LLC, Dec 2025 to Jun 20262020202120222023202420252026Changed Oct 2023Changed Dec 2025Texland Petroleum, L.P.Jan 2020 to Sep 2023Sierra Lima Oil & Gas, LLCOct 2023 to Nov 2025Aviator Energy, LLCDec 2025 to now
Operators of this lease over timeTexland Petroleum, L.P., Jan 2020 to Sep 2023; Sierra Lima Oil & Gas, LLC, Oct 2023 to Nov 2025; Aviator Energy, LLC, Dec 2025 to Jun 20262020202120222023202420252026Changed Oct 2023Changed Dec 2025Texland Petroleum, L.P.Jan 2020 to Sep 2023Sierra Lima Oil & Gas, LLCOct 2023 to Nov 2025Aviator Energy, LLCDec 2025 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

20 wells on this lease

Wells on SUNDOWN, NE. (SAN ANDRES) UNIT
API numberWell no.Status
42-219-3192325Active
42-219-326903Active
42-219-327071Active
42-219-327536Active
42-219-3275716Active
42-219-3275913Shut-in
42-219-327909Shut-in
42-219-327917Active
42-219-3279210Active
42-219-328508Active
42-219-3285111Active
42-219-3299314Active
42-219-3299415Active
42-219-330774Active
42-219-330862Active
42-219-3391718Active
42-219-3391819Shut-in
42-219-3392021Shut-in
42-219-3394717Active
42-219-3475223Shut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Sentinel Transportation, LLCOilGathers100Jun 1, 2011

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

Who buys my oilOil price check

837 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 89 and 838 acres. Use the acres from your own division order for the well you are paid on.

  • Good to know

    24 wells are listed on this lease

    Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.

  • 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 Sundown, Ne. (San Andres) Unit
API numberWell no.Acreson the permit
42-219-3192325837
42-219-3475223837.70
42-219-3254522837
42-219-3392021838
42-219-3394717177
42-219-3391718179
42-219-3391819177
42-219-330765177
42-219-330774177
42-219-330862177
42-219-3302212177
42-219-330132089

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

Unit decimal checker

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36 months, newest first

Ledger for SUNDOWN, NE. (SAN ANDRES) UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026No report–––––$80.46$2.89
Jun 2026Aviator Energy,103169000$84.81$3.15
May 2026Aviator Energy,1130000$102.13$2.94
Apr 2026Aviator Energy,104168000$100.32$2.77
Mar 2026Aviator Energy,109161000$91.38$3.04
Feb 2026Aviator Energy,1200000$64.51$3.62
Jan 2026Aviator Energy,86168000$60.04$7.72
Dec 2025Aviator Energy,73168000$57.97$4.26
Nov 2025Sierra Lima118170000$60.06$3.79
Oct 2025Sierra Lima1080000$60.89$3.19
Sep 2025Sierra Lima116171000$63.96$2.97
Aug 2025Sierra Lima152171000$64.86$2.91
Jul 2025Sierra Lima223180000$68.39$3.20
Jun 2025Sierra Lima242336000$68.17$3.02
May 2025Sierra Lima240170000$62.17$3.12
Apr 2025Sierra Lima236180000$63.54$3.42
Mar 2025Sierra Lima222170000$68.24$4.12
Feb 2025Sierra Lima217338000$71.53$4.19
Jan 2025Sierra Lima221170000$75.74$4.13
Dec 2024Sierra Lima206171000$70.12$3.01
Nov 2024Sierra Lima1560000$69.95$2.12
Oct 2024Sierra Lima144261000$71.99$2.20
Sep 2024Sierra Lima199176000$70.24$2.28
Aug 2024Sierra Lima240350000$76.68$1.99
Jul 2024Sierra Lima209166000$81.80$2.07
Jun 2024Sierra Lima234335000$79.77$2.54
May 2024Sierra Lima257180000$80.02$2.12
Apr 2024Sierra Lima2110000$85.35$1.60
Mar 2024Sierra Lima246321000$81.28$1.49
Feb 2024Sierra Lima215174000$77.25$1.72
Jan 2024Sierra Lima166161000$74.15$3.18
Dec 2023Sierra Lima204352000$71.90$2.52
Nov 2023Sierra Lima229339000$77.69$2.71
Oct 2023Sierra Lima1820000$85.64$2.98
Sep 2023Texland Petroleum,221340100$89.43$2.64
Aug 2023Texland Petroleum,211175100$81.39$2.58

No report filed

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

OperatorAviator Energy, LLCFieldSlaughterCountyHockley County

Aviator Energy, LLC in Hockley County

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Slaughter field

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