LEASES · O-1-8119 · OIL · DISTRICT 01
Mauermann -B-
ReportingSouth Sam Operating Company, LLC · Bexar County · Monksfield (350 Sand) field
Mauermann -B- is an RRC oil lease (O-1-8119) in Bexar County operated by South Sam Operating Company, LLC, with 151 wells completed on it.
It has reported 42.7K barrels of oil and 141 mcf of gas since January 1993, last reporting volume in March 2026 (statewide data runs through April 2026).
The last 12 reported months total 580 barrels of oil, down 56% on the year before; the lease peaked at 447 barrels in January 1999.
4 operators have filed production on it, most recently South Sam Operating Company, LLC since August 2011.
- 42.7K
- bbl oil, all reported
- 141
- mcf gas incl. casinghead
- 580
- bbl oil, last 12 reported
- -56%
- vs the 12 before
- 151
- wells completed on it
- 447
- peak month, bbl (Jan 1999)
PDQ LEASE REPORTS · FIRST JAN 1993 · 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 580 · prior 12 1,305(-56%)
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.
- Caspen Operating CompanyJan 1993 → Mar 1993 · 3 mo
- South Loop Operating, L.C.Apr 1993 → Apr 2009 · 193 mo
- Diamond Horseshoe Oper Comp, LLCMay 2009 → Jul 2011 · 27 mo
- South Sam Operating Company, LLCAug 2011 → Jul 2026 · 180 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
151
wells completed on the lease
- Producing
- 145
- Plugged
- 6
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-1-8119, documented in the API reference.