SENDERO-STX-UNIT
RRC oil lease 21843, district 01 · INDIO TANKS (PEARSALL) field · Frio County · operated by FORMENTERA OPERATIONS LLC
SENDERO-STX-UNIT at a glance
It has no production a year earlier to compare with. Over the last 12 months it reported 123,913 BBL of oil and 529,134 MCF of gas. In May 2026, the latest month not marked provisional, it reported 5,419 BBL and 42,444 MCF.
Royalty = (5,419 BBL × $97.31 WTI, Sep 2026, EIA + 42,444 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)
Gas (MCF per month, last 36 months)
Jun 2026 and Jul 2026 are provisional (lighter bars) and usually rise as late reports arrive.
SENDERO-STX-UNIT production history in brief
By oil-equivalent volume over the last 12 months, SENDERO-STX-UNIT ranks #7 of 643 reporting leases in Frio County. It reported production in 10 of the 34 non-provisional months shown, starting in our window in Aug 2025. Its peak oil month in that window was Sep 2025 at 17,557 BBL. The lease is in the INDIO TANKS (PEARSALL) field and is operated by FORMENTERA OPERATIONS LLC; production is reported for the lease as a whole, not per well.
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New permits nearby
New drilling permits issued this month in Frio County. RRC production data has no lease coordinates, so we match by county.
| Issued | Operator | Lease | Well | Depth (ft) |
|---|---|---|---|---|
| 2026-10-07 | TEXAS AMERICAN RESOURCES COMPANY | MOJOSA RANCH | 705H | 11,000 |
| 2026-10-07 | TEXAS AMERICAN RESOURCES COMPANY | MOJOSA RANCH | 706H | 11,000 |
Monthly production
| Month | Oil (BBL) | Gas (MCF) |
|---|---|---|
| Jul 2026 (provisional) | 3,729 | 20,888 |
| Jun 2026 (provisional) | 4,974 | 34,644 |
| May 2026 | 5,419 | 42,444 |
| Apr 2026 | 5,916 | 39,496 |
| Mar 2026 | 7,124 | 48,412 |
| Feb 2026 | 8,802 | 55,211 |
| Jan 2026 | 13,327 | 65,010 |
| Dec 2025 | 15,066 | 61,868 |
| Nov 2025 | 15,907 | 61,868 |
| Oct 2025 | 13,475 | 41,393 |
| Sep 2025 | 17,557 | 44,000 |
| Aug 2025 | 12,617 | 13,900 |
Check these figures in the RRC Production Data Query (Specific Lease Query: district 01, lease 21843). 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.