LEASES · O-2-13131 · OIL · DISTRICT 02
Barnhart (Ef)-J.M. Preston SA10
ReportingMarathon Oil EF LLC · Gonzales County · Eagleville (Eagle Ford-2) field
Barnhart (EF)-J.M. Preston Sa10 is an RRC oil lease (O-2-13131) in Gonzales County operated by Marathon Oil EF LLC, with one well completed on it.
It has reported 79.7K barrels of oil and 44.4K mcf of gas since March 2025, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 79.7K barrels of oil; the lease peaked at 15.7K barrels in October 2025.
- 79.7K
- bbl oil, all reported
- 44.4K
- mcf gas incl. casinghead
- 79.7K
- bbl oil, last 12 reported
- —
- vs the 12 before
- 1
- wells completed on it
- 15.7K
- peak month, bbl (Oct 2025)
PDQ LEASE REPORTS · FIRST MAR 2025 · 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 79,745
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 44,405
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 LLCMar 2025 → Jul 2026 · 17 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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