LEASES · O-1-16173 · OIL · DISTRICT 01
Winfield C Unit
ReportingJavelin Energy Partners Mgmt LLC · LA Salle County · Eagleville (Eagle Ford-1) field
Winfield C Unit is an RRC oil lease (O-1-16173) in La Salle County operated by Javelin Energy Partners Mgmt LLC, with 3 wells completed on it.
It has reported 649K barrels of oil and 756K mcf of gas since July 2012, last reporting volume in March 2026 (statewide data runs through April 2026).
The last 12 reported months total 53K barrels of oil, down 66% on the year before; the lease peaked at 25.3K barrels in May 2024.
5 operators have filed production on it, most recently Javelin Energy Partners Mgmt LLC since February 2025.
- 649K
- bbl oil, all reported
- 756K
- mcf gas incl. casinghead
- 53K
- bbl oil, last 12 reported
- -66%
- vs the 12 before
- 3
- wells completed on it
- 25.3K
- peak month, bbl (May 2024)
PDQ LEASE REPORTS · FIRST JUL 2012 · 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.
Last 12 months 53,038 · prior 12 155,310(-66%)
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 68,818 · prior 12 121,910(-44%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps hyperbolic curve fitted to the 23 reporting months of oil since the peak in May 2024. The dashed line below is that curve, drawn over the months it was fitted to and then 24 months past the last report; where it parts from the columns is where the model stops describing the lease. It describes the trend of past reports. It does not know about recompletions, shut-ins, or new wells, and it is shown only when the lease reported within the last year and the curve explains most of the history.
- 76%
- first-year decline from the peak (nominal Di 283%)
- 0.9
- b factor (hyperbolic)
- 0.95
- fit R²
- 252K
- bbl remaining on the curve, to 1 per month
Oil, barrels reported months since the peak, with the fitted curve and its projection
Last 12 months 53,038 · prior 12 155,310(-66%)
Fitted hyperbolic curve from the May 2024 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 2,769 | 2,308 | 1,974 | 1,721 |
Quoting a projected figure as if it were reported would be wrong; the reported figures are the ones in the charts and the table view. How production is reported →
Who reported it
Each run of months one operator filed the production report, oldest first.
- Carrizo Oil & Gas, Inc.Jul 2012 → Oct 2012 · 4 mo
- Carrizo (Eagle Ford) LLCNov 2012 → Jan 2020 · 87 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
3
wells completed on the lease
- Producing
- 2
- Shut IN
- 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.
Developers: this page as JSON is GET /v1/data/leases/tx/o-1-16173, documented in the API reference.