LEASES · O-1-19966 · OIL · DISTRICT 01
Turk-Williams SA C
Marathon Oil EF LLC · Gonzales County · Eagleville (Eagle Ford-1) field
Turk-Williams SA C is an RRC oil lease (O-1-19966) in Gonzales County operated by Marathon Oil EF LLC, with one well completed on it.
It has reported 264K barrels of oil and 379K mcf of gas since January 2020, last reporting volume in April 2026 (statewide data runs through April 2026).
It reported 14.2K barrels of oil in the 12 months through April 2026, down 1% on the year before; the lease peaked at 46.6K barrels in February 2020.
- 264K
- bbl oil, all reported
- 379K
- mcf gas incl. casinghead
- 14.2K
- bbl oil, 12 months through Apr 2026
- -1%
- vs the 12 before
- 1
- wells completed on it
- 46.6K
- peak month, bbl (Feb 2020)
PDQ LEASE REPORTS · FIRST JAN 2020 · 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.
12 months through Apr 2026 14,153 · prior 12 14,363(-1%)
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.
12 months through Apr 2026 30,582 · prior 12 28,806(+6%)
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 LLCOct 2019 → Jul 2026 · 82 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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