Skip to content
Royalty Clerk

Texas oil lease

Producing

GRAND SLAM UNIT

Grand Slam Unit is an oil lease in Gonzales County, Texas, operated by Modern Exploration, Inc. in the Pilgrim (Austin Chalk) field.

1 well

1,651bbl oil, last 12 months−19% vs prior year
RRC lease
01-13843

Is your check right?

Check my statement

Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County
Oil in Jul 2026
177 bbl
Reporting since
Jan 2020

Production by month

Oil output fell 19% over the last 12 months

  • Oil (bars)
  • Last 12 months
Oil output fell 19% over the last 12 monthsMonthly oil production for GRAND SLAM UNIT, Aug 2023 to Jul 2026. Oil output fell 19% over the last 12 months. 1,651 bbl in the 12 months through Jul 2026, against 2,048 bbl in the 12 months before.Last 12 months: 1,651 bblbbl per month0100200300400Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 19% over the last 12 monthsMonthly oil production for GRAND SLAM UNIT, Aug 2023 to Jul 2026. Oil output fell 19% over the last 12 months. 1,651 bbl in the 12 months through Jul 2026, against 2,048 bbl in the 12 months before.Last 12 monthsbbl per month0100200300400Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

No gas disposition reported for this lease

The operator has not reported where the gas went in the months we hold.

1 well on this lease

Wells on GRAND SLAM UNIT
API numberWell no.Status
42-177-319891Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Plains Marketing, L.p.OilGathers100Dec 1, 2025–
Energy Trans Crude Marketing LLCOilGathers100Dec 12, 2024Dec 1, 2025
Enterprise Crude Oil LLCOilGathers50Aug 1, 2013Dec 12, 2024
Genesis Crude Oil, L.p.OilGathers50Aug 1, 2013Dec 12, 2024

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

273 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 Grand Slam Unit
API numberWell no.Acreson the permit
42-177-319891273

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

Estimate your royalty

36 months, newest first

Ledger for GRAND SLAM UNIT
MonthOil producedbblOil soldbblWTI$/bblHenry Hub$/MMBtu
Jul 20261770$80.46$2.89
Jun 202658219$84.81$3.15
May 2026145182$102.13$2.94
Apr 202614945$100.32$2.77
Mar 2026108183$91.38$3.04
Feb 2026135241$64.51$3.62
Jan 20262070$60.04$7.72
Dec 2025246183$57.97$4.26
Nov 202549168$60.06$3.79
Oct 202598183$60.89$3.19
Sep 20251630$63.96$2.97
Aug 2025116178$64.86$2.91
Jul 2025166171$68.39$3.20
Jun 2025165166$68.17$3.02
May 2025192177$62.17$3.12
Apr 2025219337$63.54$3.42
Mar 2025248333$68.24$4.12
Feb 2025306170$71.53$4.19
Jan 2025340$75.74$4.13
Dec 202484168$70.12$3.01
Nov 2024870$69.95$2.12
Oct 2024177179$71.99$2.20
Sep 2024180190$70.24$2.28
Aug 2024190186$76.68$1.99
Jul 2024223176$81.80$2.07
Jun 2024209187$79.77$2.54
May 2024175178$80.02$2.12
Apr 2024230189$85.35$1.60
Mar 2024229190$81.28$1.49
Feb 2024520$77.25$1.72
Jan 2024143191$74.15$3.18
Dec 2023206188$71.90$2.52
Nov 2023284375$77.69$2.71
Oct 2023202188$85.64$2.98
Sep 2023130182$89.43$2.64
Aug 2023238178$81.39$2.58

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

How to check your stub against this lease Checks stopped on this lease? See the likely reasons

Do your checks match this lease?

Nearby

Modern Exploration, Inc. in Gonzales County

All Modern Exploration, Inc. leases →

Pilgrim (Austin Chalk) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km