LEASES · O-1-16349 · OIL · DISTRICT 01
Cobra B
Javelin Energy Partners Mgmt LLC · McMullen County · Eagleville (Eagle Ford-1) field
Cobra B is an RRC oil lease (O-1-16349) in Mcmullen County operated by Javelin Energy Partners Mgmt LLC, with one well completed on it.
It has reported 165K barrels of oil and 195K mcf of gas since November 2012, last reporting volume in March 2026 (statewide data runs through April 2026).
It reported 22.7K barrels of oil in the 12 months through April 2026, down 29% on the year before; the lease peaked at 16K barrels in December 2012.
7 operators have filed production on it, most recently Javelin Energy Partners Mgmt LLC since February 2025.
- 165K
- bbl oil, all reported
- 195K
- mcf gas incl. casinghead
- 22.7K
- bbl oil, 12 months through Apr 2026
- -29%
- vs the 12 before
- 1
- wells completed on it
- 16K
- peak month, bbl (Dec 2012)
PDQ LEASE REPORTS · FIRST NOV 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.
12 months through Apr 2026 22,661 · prior 12 32,082(-29%)
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 39,906 · prior 12 32,361(+23%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps hyperbolic curve fitted to the 17 reporting months of oil since the peak in Nov 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.
- 72%
- first-year decline from the peak (nominal Di 193%)
- 0.6
- b factor (hyperbolic)
- 0.93
- fit R²
- 45.8K
- 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 22,661
Fitted hyperbolic curve from the Nov 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 | 915 | 694 | 548 | 446 |
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.
- Abraxas Petroleum CorporationNov 2012 → Nov 2013 · 13 mo
- Sanchez Oil & Gas CorporationDec 2013 → Apr 2014 · 5 mo
- SN Operating, LLCMay 2014 → Nov 2016 · 31 mo
- Carrizo (Eagle Ford) LLCDec 2016 → Jan 2020 · 38 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
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-1-16349, documented in the API reference.