LEASES · O-2-10641 · OIL · DISTRICT 02
May Girls-Chapman Unit
ReportingMarathon Oil EF LLC · Atascosa County · Eagleville (Eagle Ford-2) field
May Girls-Chapman Unit is an RRC oil lease (O-2-10641) in Atascosa County operated by Marathon Oil EF LLC, with 4 wells completed on it.
It has reported 474K barrels of oil and 730K mcf of gas since May 2013, last reporting volume in December 2025 (statewide data runs through April 2026).
The last 12 reported months total 200 barrels of oil, down 96% on the year before; the lease peaked at 51.8K barrels in November 2013.
- 474K
- bbl oil, all reported
- 730K
- mcf gas incl. casinghead
- 200
- bbl oil, last 12 reported
- -96%
- vs the 12 before
- 4
- wells completed on it
- 51.8K
- peak month, bbl (Nov 2013)
PDQ LEASE REPORTS · FIRST MAY 2013 · LAST VOLUME DEC 2025 · 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 200 · prior 12 5,080(-96%)
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 186 · prior 12 5,944(-97%)
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 LLCMay 2013 → Jul 2026 · 159 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
4
wells completed on the lease
- Shut IN
- 3
- Producing
- 1
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.
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