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Texas oil lease

Producing

TOMBALL GAS UNIT #18

Tomball Gas Unit #18 is an oil lease in Harris County, Texas, operated by Galloway Lone Star, L.L.C. in the Tomball (Kobs) field.

1 well

3,420bbl oil, last 12 months−37% vs prior year
RRC lease
03-23647

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Where it sits

This county

Harris CountyHarrisLibertyMontgomeryWallerFort BendHarris County
Harris County
Gas, last 12 months
30,307 mcf
Oil in Jul 2026
508 bbl

Production by month

Oil output fell 37% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 37% over the last 12 monthsMonthly oil production and gas for TOMBALL GAS UNIT #18, Aug 2023 to Jul 2026. Oil output fell 37% over the last 12 months. 3,420 bbl in the 12 months through Jul 2026, against 5,390 bbl in the 12 months before.Last 12 months: 3,420 bblbbl per monthmcf per month002002,0004004,0006006,0008008,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 37% over the last 12 monthsMonthly oil production and gas for TOMBALL GAS UNIT #18, Aug 2023 to Jul 2026. Oil output fell 37% over the last 12 months. 3,420 bbl in the 12 months through Jul 2026, against 5,390 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002002,0004004,0006006,0008008,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

93% of the gas went to a transmission line in the last 12 months

  • Transmission line (2)
  • Lease fuel (1)
93% of the gas went to a transmission line in the last 12 monthsShare of TOMBALL GAS UNIT #18 gas by disposition code each month, Aug 2023 to Jul 2026. 93% of the gas went to a transmission line in the last 12 months.Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
93% of the gas went to a transmission line in the last 12 monthsShare of TOMBALL GAS UNIT #18 gas by disposition code each month, Aug 2023 to Jul 2026. 93% of the gas went to a transmission line in the last 12 months.Share of gas by disposition code0%50%100%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    93% · 46,788 mcf

  • Lease fuel (1)

    7.0% · 3,523 mcf

Who has run this lease

The operator changed once, most recently in Feb 2022

Operators of this lease over timeDaylight Petroleum LLC, Jan 2020 to Jan 2022; Galloway Lone Star, L.L.C., Feb 2022 to Jul 20262020202120222023202420252026Changed Feb 2022Daylight Petroleum LLCJan 2020 to Jan 2022Galloway Lone Star, L.L.C.Feb 2022 to now
Operators of this lease over timeDaylight Petroleum LLC, Jan 2020 to Jan 2022; Galloway Lone Star, L.L.C., Feb 2022 to Jul 20262020202120222023202420252026Changed Feb 2022Daylight Petroleum LLCJan 2020 to Jan 2022Galloway Lone Star, L.L.C.Feb 2022 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on TOMBALL GAS UNIT #18
API numberWell no.Status
42-201-316671Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCOilGathers50May 1, 2020–
Truth Resources, L.p.OilGathers50Feb 1, 2022–
Gulfmark Energy, Inc.OilGathers50May 1, 2020Feb 1, 2022
Enterprise Crude Oil LLCOilGathers100Jul 1, 2015May 1, 2020

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

300 acres on the newest permit

  • Good to know

    A pooling certificate (P-12) was filed

    Your tract may share its production with neighbors in a pooled unit. The unit acres the operator uses to divide production can differ from the acreage on one permit.

Check your decimal on this lease
Permits for Tomball Gas Unit #18
API numberWell no.Acreson the permit
42-201-316671300

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

Estimate your royalty

36 months, newest first

Ledger for TOMBALL GAS UNIT #18
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Galloway Lone5085253,7733,5010$80.46$2.89
Jun 2026Galloway Lone4055113,9793,6910$84.81$3.15
May 2026Galloway Lone4513433,3803,1340$102.13$2.94
Apr 2026Galloway Lone200000$100.32$2.77
Mar 2026Galloway Lone230000$91.38$3.04
Feb 2026Galloway Lone00000$64.51$3.62
Jan 2026Galloway Lone3805234,1423,8500$60.04$7.72
Dec 2025Galloway Lone4523454,5424,2250$57.97$4.26
Nov 2025Galloway Lone4455103,7623,4950$60.06$3.79
Oct 2025Galloway Lone4655264,0523,7650$60.89$3.19
Sep 2025Galloway Lone2561702,6772,4870$63.96$2.97
Aug 2025Galloway Lone150000$64.86$2.91
Jul 2025Galloway Lone3303623,6963,4360$68.39$3.20
Jun 2025Galloway Lone4423615,4865,0990$68.17$3.02
May 2025Galloway Lone4435215,1274,8090$62.17$3.12
Apr 2025Galloway Lone4893515,6955,2960$63.54$3.42
Mar 2025Galloway Lone4575255,8935,4820$68.24$4.12
Feb 2025Galloway Lone4253635,2154,8510$71.53$4.19
Jan 2025Galloway Lone4695425,7965,3960$75.74$4.13
Dec 2024Galloway Lone4325355,9505,5310$70.12$3.01
Nov 2024Galloway Lone3543415,5205,1350$69.95$2.12
Oct 2024Galloway Lone4704754,0153,7300$71.99$2.20
Sep 2024Galloway Lone4985066,1825,7410$70.24$2.28
Aug 2024Galloway Lone5815255,1544,7870$76.68$1.99
Jul 2024Galloway Lone4765154,0033,7100$81.80$2.07
Jun 2024Galloway Lone5367084,1983,8920$79.77$2.54
May 2024Galloway Lone5343574,2383,9360$80.02$2.12
Apr 2024Galloway Lone4323524,5774,2590$85.35$1.60
Mar 2024Galloway Lone100000$81.28$1.49
Feb 2024Galloway Lone00000$77.25$1.72
Jan 2024Galloway Lone1061671,0721,0000$74.15$3.18
Dec 2023Galloway Lone1371801,8201,8200$71.90$2.52
Nov 2023Galloway Lone5395787,6857,6850$77.69$2.71
Oct 2023Galloway Lone5206707,2757,2750$85.64$2.98
Sep 2023Galloway Lone5793497,0547,0540$89.43$2.64
Aug 2023Galloway Lone5607186,8316,8310$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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