SIERRA B
RRC oil lease 21939, district 01 · EAGLEVILLE (EAGLE FORD-1) field · La Salle County · operated by EOG RESOURCES, INC.
SIERRA B at a glance
It has no production a year earlier to compare with. Over the last 12 months it reported 148,780 BBL of oil and 119,959 MCF of gas. In May 2026, the latest month not marked provisional, it reported 26,764 BBL and 22,297 MCF.
Royalty = (26,764 BBL × $97.31 WTI, Sep 2026, EIA + 22,297 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.
SIERRA B production history in brief
By oil-equivalent volume over the last 12 months, SIERRA B ranks #129 of 3,430 reporting leases in La Salle County. It reported production in 3 of the 34 non-provisional months shown, starting in our window in Mar 2026. Its peak oil month in that window was Mar 2026 at 43,944 BBL. The lease is in the EAGLEVILLE (EAGLE FORD-1) field and is operated by EOG RESOURCES, INC.; 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 La Salle County. RRC production data has no lease coordinates, so we match by county.
| Issued | Operator | Lease | Well | Depth (ft) |
|---|---|---|---|---|
| 2026-10-12 | SYDRI OPERATING, LLC | WILSON C ALLOC. 4 | C 4H | 9,000 |
| 2026-10-06 | LEWIS PETRO PROPERTIES, INC. | ROBERT GUTIERREZ-APPLING | 5H | 12,000 |
| 2026-10-05 | SYDRI OPERATING, LLC | WILSON C ALLOC. 3 | C 3H | 9,000 |
Monthly production
| Month | Oil (BBL) | Gas (MCF) |
|---|---|---|
| Jul 2026 (provisional) | 17,391 | 16,346 |
| Jun 2026 (provisional) | 23,332 | 21,047 |
| May 2026 | 26,764 | 22,297 |
| Apr 2026 | 37,349 | 30,558 |
| Mar 2026 | 43,944 | 29,711 |
Check these figures in the RRC Production Data Query (Specific Lease Query: district 01, lease 21939). 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.