LEASES · O-1-14577 · OIL · DISTRICT 01
South Texas Syndicate -A-
ReportingCaribbean Energy LLC II · McMullen County · Green Branch (5500) field
South Texas Syndicate -A- is an RRC oil lease (O-1-14577) in Mcmullen County operated by Caribbean Energy LLC II, with one well completed on it.
It has reported 63.2K barrels of oil and 164K mcf of gas since January 2005, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 1.06K barrels of oil, down 3% on the year before; the lease peaked at 1.04K barrels in December 2005.
5 operators have filed production on it, most recently Caribbean Energy LLC II since March 2026.
- 63.2K
- bbl oil, all reported
- 164K
- mcf gas incl. casinghead
- 1.06K
- bbl oil, last 12 reported
- -3%
- vs the 12 before
- 1
- wells completed on it
- 1.04K
- peak month, bbl (Dec 2005)
PDQ LEASE REPORTS · FIRST JAN 2005 · LAST VOLUME APR 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 1,062 · prior 12 1,090(-3%)
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 0 · prior 12 0
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.
- Whiting Oil and Gas CorporationJan 2005 → Dec 2015 · 132 mo
- Foundation Energy Management LLCJan 2016 → Jul 2018 · 31 mo
- Terrafina Energy, LLCAug 2018 → Feb 2023 · 55 mo
- Vermillion Production, Inc.Mar 2023 → Feb 2026 · 36 mo
- Caribbean Energy LLC IIMar 2026 → Jul 2026 · 5 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-1-14577, documented in the API reference.