LEASES · G-2-266858 · GAS · DISTRICT 02
Sienkiewicz Unit
Marathon Oil EF LLC · Karnes County · Sugarkane (Eagle Ford) field
Sienkiewicz Unit is an RRC gas lease (G-2-266858) in Karnes County operated by Marathon Oil EF LLC, with one well completed on it.
It has reported 1.49M mcf of gas and 328K barrels of condensate since November 2012, last reporting volume in August 2022 (statewide data runs through August 2026).
No volume was reported in the 12 months through August 2026; the last was in August 2022.
- 1.49M
- mcf gas, all reported
- 328K
- bbl condensate, all reported
- 0
- mcf gas, 12 months through Aug 2026
- —
- vs the 12 before
- 1
- wells completed on it
- —
- peak month, bbl
PDQ LEASE REPORTS · FIRST NOV 2012 · LAST VOLUME AUG 2022 · STATEWIDE DATA THROUGH AUG 2026
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 Aug 2026 0 · prior 12 0
Who reported it
Each run of months one operator filed the production report, oldest first, with what it reported in them.
- Marathon Oil EF LLCOct 2012 → Nov 2026 · 170 mo328K bbl oil · 1.49M mcf gas
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 Aug 2026. Wells from completion reports; operator runs from who filed each month's report.
Developers: this page as JSON is GET /v1/data/leases/tx/g-2-266858, documented in the API reference.