LEASES · O-2-10002 · OIL · DISTRICT 02
Medina-Jonas Unit B
Marathon Oil EF LLC · Karnes County · Eagleville (Eagle Ford-2) field
Medina-Jonas Unit B is an RRC oil lease (O-2-10002) in Karnes County operated by Marathon Oil EF LLC, with 4 wells completed on it.
It has reported 1.12M barrels of oil and 1.25M mcf of gas since April 2012, last reporting volume in April 2026 (statewide data runs through April 2026).
It reported 25.3K barrels of oil in the 12 months through April 2026, down 8% on the year before; the lease peaked at 58.2K barrels in October 2014.
- 1.12M
- bbl oil, all reported
- 1.25M
- mcf gas incl. casinghead
- 25.3K
- bbl oil, 12 months through Apr 2026
- -8%
- vs the 12 before
- 4
- wells completed on it
- 58.2K
- peak month, bbl (Oct 2014)
PDQ LEASE REPORTS · FIRST APR 2012 · 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 25,257 · prior 12 27,602(-8%)
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 8,477 · prior 12 39,094(-78%)
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 2012 → Jul 2026 · 173 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
4
wells completed on the lease
- Producing
- 2
- Shut In
- 2
Operates them now
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.
Developers: this page as JSON is GET /v1/data/leases/tx/o-2-10002, documented in the API reference.