LEASES · O-1-16278 · OIL · DISTRICT 01
Winfield a Unit
Javelin Energy Partners Mgmt LLC · La Salle County · Eagleville (Eagle Ford-1) field
Winfield A Unit is an RRC oil lease (O-1-16278) in La Salle County operated by Javelin Energy Partners Mgmt LLC, with 2 wells completed on it.
It has reported 529K barrels of oil and 924K mcf of gas since January 2013, last reporting volume in September 2025 (statewide data runs through April 2026).
It reported 7.86K barrels of oil in the 12 months through April 2026, down 33% on the year before; the lease peaked at 25.7K barrels in March 2013.
5 operators have filed production on it, most recently Javelin Energy Partners Mgmt LLC since February 2025.
- 529K
- bbl oil, all reported
- 924K
- mcf gas incl. casinghead
- 7.86K
- bbl oil, 12 months through Apr 2026
- -33%
- vs the 12 before
- 2
- wells completed on it
- 25.7K
- peak month, bbl (Mar 2013)
PDQ LEASE REPORTS · FIRST JAN 2013 · LAST VOLUME SEP 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.
12 months through Apr 2026 7,857 · prior 12 11,793(-33%)
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 1,297 · prior 12 31,964(-96%)
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.
- Carrizo Oil & Gas, Inc.Sep 2012 → Nov 2012 · 3 mo
- Carrizo (Eagle Ford) LLCDec 2012 → Jan 2020 · 86 mo
- Callon (Eagle Ford) LLCFeb 2020 → Jun 2023 · 41 mo
- Ridgemar Energy Operating, LLCJul 2023 → Jan 2025 · 19 mo
- Javelin Energy Partners Mgmt LLCFeb 2025 → Jul 2026 · 18 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
2
wells completed on the lease
- NO Production
- 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-1-16278, documented in the API reference.