LEASES · O-1-10570 · OIL · DISTRICT 01
Cassin
No volume since Nov 2005South Loop Operating, L.C. · Bexar County · Monksfield (350 Sand) field
Cassin is an RRC oil lease (O-1-10570) in Bexar County operated by South Loop Operating, L.C., with 108 wells completed on it.
It has reported 20.7K barrels of oil and 142 mcf of gas since January 1993, last reporting volume in November 2005 (statewide data runs through April 2026).
The last 12 reported months total 294 barrels of oil, down 58% on the year before; the lease peaked at 381 barrels in February 1995.
2 operators have filed production on it, most recently South Loop Operating, L.C. since April 1993.
- 20.7K
- bbl oil, all reported
- 142
- mcf gas incl. casinghead
- 294
- bbl oil, last 12 reported
- -58%
- vs the 12 before
- 108
- wells completed on it
- 381
- peak month, bbl (Feb 1995)
PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME NOV 2005 · 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 294 · prior 12 704(-58%)
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 6(-100%)
Who reported it
Each run of months one operator filed the production report, oldest first.
- Caspen Operating CompanyJan 1993 → Mar 1993 · 3 mo
- South Loop Operating, L.C.Apr 1993 → Sep 2006 · 162 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
108
wells completed on the lease
- Plugged
- 108
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-1-10570, documented in the API reference.