LEASES · O-1-17545 · OIL · DISTRICT 01
Gierisch Unit
Javelin Energy Partners Mgmt LLC · La Salle County · Eagleville (Eagle Ford-1) field
Gierisch Unit is an RRC oil lease (O-1-17545) in La Salle County operated by Javelin Energy Partners Mgmt LLC, with 2 wells completed on it.
It has reported 780K barrels of oil and 766K mcf of gas since April 2014, last reporting volume in March 2026 (statewide data runs through April 2026).
It reported 12.4K barrels of oil in the 12 months through April 2026, down 5% on the year before; the lease peaked at 35.1K barrels in November 2014.
4 operators have filed production on it, most recently Javelin Energy Partners Mgmt LLC since February 2025.
- 780K
- bbl oil, all reported
- 766K
- mcf gas incl. casinghead
- 12.4K
- bbl oil, 12 months through Apr 2026
- -5%
- vs the 12 before
- 2
- wells completed on it
- 35.1K
- peak month, bbl (Nov 2014)
PDQ LEASE REPORTS · FIRST APR 2014 · LAST VOLUME MAR 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 12,395 · prior 12 13,003(-5%)
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 17,185 · prior 12 12,822(+34%)
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 (Eagle Ford) LLCFeb 2014 → Jan 2020 · 72 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
- Producing
- 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-1-17545, documented in the API reference.