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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 A

MAYO-GRIFFIN HV UNIT A

RRC gas well 298845, district 06 · CARTHAGE (HAYNESVILLE SHALE) field · Harrison County · operated by TGNR EAST TEXAS II LLC

MAYO-GRIFFIN HV UNIT A at a glance

Gas output in Mar 2026–May 2026 was down 57% from the same three months a year earlier. Over the last 12 months it reported 0 BBL of oil and 1,226,763 MCF of gas. In May 2026, the latest month not marked provisional, it reported 0 BBL and 81,079 MCF.

0BBL oil, last 12 monthsno prior data
1.2MMCF gas, last 12 months▼ 59% vs prior 12
$239.18est. gross royalty for May 2026 at decimal
0new permits in Harrison County this month

Royalty = (0 BBL × $97.31 WTI, Sep 2026, EIA + 81,079 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 A production history in brief

By oil-equivalent volume over the last 12 months, MAYO-GRIFFIN HV UNIT A ranks #131 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 526,600 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)068,161
Jun 2026 (provisional)072,182
May 2026081,079
Apr 2026083,418
Mar 2026087,951
Feb 2026088,140
Jan 20260103,123
Dec 20250113,409
Nov 20250116,879
Oct 20250134,521
Sep 20250131,658
Aug 20250146,242
Jul 20250156,353
Jun 20250163,424
May 20250180,405
Apr 20250188,011
Mar 20250212,512
Feb 20250218,814
Jan 20250253,795
Dec 20240275,371
Nov 20240291,421
Oct 20240331,426
Sep 20240352,155
Aug 20240393,597
Jul 20240405,158
Jun 20240445,809
May 20240526,600
Apr 20240510,547

Check these figures in the RRC Production Data Query (Specific Lease Query: district 06, lease 298845). 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.