LEASES · O-1-20697 · OIL · DISTRICT 01
Bilsky-Chumchal SA1
ReportingMarathon Oil EF LLC · Gonzales County · Eagleville (Eagle Ford-1) field
Bilsky-Chumchal Sa1 is an RRC oil lease (O-1-20697) in Gonzales County operated by Marathon Oil EF LLC, with one well completed on it.
It has reported 265K barrels of oil and 345K mcf of gas since August 2022, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 24.4K barrels of oil, down 20% on the year before; the lease peaked at 38.5K barrels in November 2022.
- 265K
- bbl oil, all reported
- 345K
- mcf gas incl. casinghead
- 24.4K
- bbl oil, last 12 reported
- -20%
- vs the 12 before
- 1
- wells completed on it
- 38.5K
- peak month, bbl (Nov 2022)
PDQ LEASE REPORTS · FIRST AUG 2022 · LAST VOLUME APR 2026 · STATEWIDE DATA THROUGH APR 2026
Oil by month
Barrels reported on Form PR for the whole lease. The latest months are revised upward as late reports arrive.
Last 12 months 24,360 · prior 12 30,336(-20%)
Gas by month
Gas-well gas plus casinghead gas, mcf. On an oil lease all gas is reported as casinghead. The latest months are revised upward as late reports arrive.
Last 12 months 52,286 · prior 12 44,011(+19%)
Decline curve
None shown. Petrora fits an Arps curve only when the last ten years of oil reports follow one decline closely enough to project (R² of 0.7 or better over at least a year since the peak). This lease's recent history does not, so a projection would be a guess dressed as a number.
Who reported it
Each run of months one operator filed the production report, oldest first.
- Marathon Oil EF LLCAug 2022 → Jul 2026 · 48 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
About this data
Monthly oil, gas, and casinghead from the RRC PDQ production dump, which lags the reporting month by two to three months; figures shown through Apr 2026. Wells from completion reports; operator runs from who filed each month's report.
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