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Data as of Jul 2026 production (Jun 2026–Jul 2026 provisional) · permits through Oct 14, 2026 · Source: Texas Railroad Commission · Methodology
Home / Operators / MAYO-GRIFFIN HV UNIT C

MAYO-GRIFFIN HV UNIT C

RRC gas well 298893, district 06 · CARTHAGE (HAYNESVILLE SHALE) field · Harrison County · operated by TGNR EAST TEXAS II LLC

MAYO-GRIFFIN HV UNIT C at a glance

Gas output in Mar 2026–May 2026 was down 55% from the same three months a year earlier. Over the last 12 months it reported 0 BBL of oil and 1,214,841 MCF of gas. In May 2026, the latest month not marked provisional, it reported 0 BBL and 77,810 MCF.

0BBL oil, last 12 monthsno prior data
1.2MMCF gas, last 12 months▼ 58% vs prior 12
$229.54est. gross royalty for May 2026 at decimal
0new permits in Harrison County this month

Royalty = (0 BBL × $97.31 WTI, Sep 2026, EIA + 77,810 MCF × $2.95 Henry Hub, Sep 2026, EIA) × your decimal. 0.001 is only a placeholder: enter the decimal from your check stub or division order. Gross, before taxes and deductions. Full estimator →

Oil + condensate (BBL per month, last 36 months)

01Aug 23Feb 24Aug 24Feb 25Aug 25Feb 26

Gas (MCF per month, last 36 months)

0200K400K600KAug 23Feb 24Aug 24Feb 25Aug 25Feb 26

Jun 2026 and Jul 2026 are provisional (lighter bars) and usually rise as late reports arrive.

MAYO-GRIFFIN HV UNIT C production history in brief

By oil-equivalent volume over the last 12 months, MAYO-GRIFFIN HV UNIT C ranks #133 of 3,694 reporting leases in Harrison County. It reported production in 26 of the 34 non-provisional months shown, starting in our window in Apr 2024. Its peak gas month in that window was May 2024 at 522,697 MCF. The lease is in the CARTHAGE (HAYNESVILLE SHALE) field and is operated by TGNR EAST TEXAS II LLC; production is reported for the lease as a whole, not per well.

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New permits nearby

No new permits in this county in the current RRC daily file.

Monthly production

MonthOil (BBL)Gas (MCF)
Jul 2026 (provisional)065,471
Jun 2026 (provisional)072,013
May 2026077,810
Apr 2026081,377
Mar 2026082,195
Feb 2026083,927
Jan 2026098,760
Dec 20250110,601
Nov 20250121,930
Oct 20250154,107
Sep 20250132,341
Aug 20250134,309
Jul 20250142,493
Jun 20250138,136
May 20250166,307
Apr 20250172,308
Mar 20250201,461
Feb 20250199,732
Jan 20250239,620
Dec 20240263,341
Nov 20240285,031
Oct 20240323,172
Sep 20240350,284
Aug 20240402,015
Jul 20240430,239
Jun 20240472,113
May 20240522,697
Apr 20240481,269

Check these figures in the RRC Production Data Query (Specific Lease Query: district 06, lease 298893). Production is reported per lease, so a lease with several wells is not split by well.

Source: Texas Railroad Commission (data sets, Production Data Query). Data date: RRC Production Data Query dump, extract dated Sep 18, 2026; production through Jul 2026. Jun 2026 and Jul 2026 are provisional: operators file late and amend, so these months usually rise in later releases. Oil = crude oil + condensate (BBL); gas = gas-well gas + casinghead gas (MCF), as reported to RRC. Methodology.