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Texas gas well

Producing

MAYO-GRIFFIN HV UNIT A

Mayo-Griffin HV Unit A is a gas well in Harrison County, Texas, operated by Tgnr East Texas II LLC in the Carthage (Haynesville Shale) field.

1 well

1,226,763mcf gas, last 12 months−59% vs prior year
Operator
Tgnr East Texas II LLC
County
Harrison County
Field
Carthage (Haynesville Shale)
RRC lease
06-298845

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Where it sits

This county

Harrison CountyHarrisonPanolaGreggUpshurCassMorrisMarionTitusCampHarrison County
Harrison County
Gas in Jul 2026
68,161 mcf
Reporting since
Apr 2024

Production by month

Gas output fell 59% over the last 12 months

  • Gas (bars)
  • Last 12 months
Gas output fell 59% over the last 12 monthsMonthly gas production for MAYO-GRIFFIN HV UNIT A, Apr 2024 to Jul 2026. Gas output fell 59% over the last 12 months. 1,226,763 mcf in the 12 months through Jul 2026, against 3,017,284 mcf in the 12 months before.Last 12 months: 1,226,763 mcfmcf per month0200k400k600k800kApr 24JulOctJan 25AprJulOctJan 26AprJul
Gas output fell 59% over the last 12 monthsMonthly gas production for MAYO-GRIFFIN HV UNIT A, Apr 2024 to Jul 2026. Gas output fell 59% over the last 12 months. 1,226,763 mcf in the 12 months through Jul 2026, against 3,017,284 mcf in the 12 months before.Last 12 monthsmcf per month0200k400k600k800kJul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Feb 2026 the lease's gas goes to a transmission line instead of a processing plant

  • Processing plant (3)
  • Transmission line (2)
  • Lease fuel (1)
Since Feb 2026 the lease's gas goes to a transmission line instead of a processing plantShare of MAYO-GRIFFIN HV UNIT A gas by disposition code each month, Apr 2024 to Jul 2026. Since Feb 2026 the lease's gas goes to a transmission line instead of a processing plant.Share of the lease’s gas by disposition code, per month0%50%100%Feb 2026: plant to lineApr 24JulOctJan 25AprJulOctJan 26AprJul
Since Feb 2026 the lease's gas goes to a transmission line instead of a processing plantShare of MAYO-GRIFFIN HV UNIT A gas by disposition code each month, Apr 2024 to Jul 2026. Since Feb 2026 the lease's gas goes to a transmission line instead of a processing plant.Share of gas by disposition code0%50%100%Feb 26: plant to lineJul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    91% · 1,118,809 mcf

  • Processing plant (3)

    8.4% · 102,546 mcf

  • Lease fuel (1)

    0.4% · 5,408 mcf

1 well on this lease

Wells on MAYO-GRIFFIN HV UNIT A
API numberWell no.Status
42-203-356031HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Eastex Crude Company, LLCCondensateGathers100Apr 1, 2024
Tgnr East Texas II LLCGas-well gasBuys100Apr 1, 2024
Gemini Carthage Pipeline, LLCGas-well gasGathers100Apr 1, 2024

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

Who buys my oilOil price check

1,157.54 acres on the newest permit

  • Worth asking

    An allocation well is on this lease

    A well drilled across several tracts shares its production by an allocation formula, so the decimal is not always your acres over the unit acres. Ask the operator for the allocation formula and the tract factor for your land.

  • 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 Mayo-Griffin HV Unit A
API numberWell no.Acreson the permit
42-203-356031H1,157.54

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

Unit decimal checker

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28 months, newest first

Ledger for MAYO-GRIFFIN HV UNIT A
MonthGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202668,16167,9320$80.46$2.89
Jun 202672,18271,6770$84.81$3.15
May 202681,07980,5180$102.13$2.94
Apr 202683,41882,8810$100.32$2.77
Mar 202687,95187,7050$91.38$3.04
Feb 202688,14087,6410$64.51$3.62
Jan 2026103,123102,5460$60.04$7.72
Dec 2025113,409113,1380$57.97$4.26
Nov 2025116,879116,4610$60.06$3.79
Oct 2025134,521134,0440$60.89$3.19
Sep 2025131,658131,1570$63.96$2.97
Aug 2025146,242145,6550$64.86$2.91
Jul 2025156,353155,7420$68.39$3.20
Jun 2025163,424162,7370$68.17$3.02
May 2025180,405179,7270$62.17$3.12
Apr 2025188,011187,3520$63.54$3.42
Mar 2025212,512211,7050$68.24$4.12
Feb 2025218,814217,9680$71.53$4.19
Jan 2025253,795252,8910$75.74$4.13
Dec 2024275,371274,5210$70.12$3.01
Nov 2024291,421290,3450$69.95$2.12
Oct 2024331,426330,2860$71.99$2.20
Sep 2024352,155350,7770$70.24$2.28
Aug 2024393,597392,0270$76.68$1.99
Jul 2024405,158403,4670$81.80$2.07
Jun 2024445,809444,0730$79.77$2.54
May 2024526,600524,1930$80.02$2.12
Apr 2024510,547507,6640$85.35$1.60

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

OperatorTgnr East Texas II LLCFieldCarthage (Haynesville Shale)CountyHarrison County

Tgnr East Texas II LLC in Harrison County

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Carthage (Haynesville Shale) field

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