LEASES · O-1-10800 · OIL · DISTRICT 01
Winans Living Trust
ReportingCalfas Cattle & Oil, LLC · Atascosa County · Somerset field
Winans Living Trust is an RRC oil lease (O-1-10800) in Atascosa County operated by Calfas Cattle & Oil, LLC, with 7 wells completed on it.
It has reported 1.92K barrels of oil and 46 mcf of gas since January 1993, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 42 barrels of oil; the lease peaked at 72 barrels in May 2009.
8 operators have filed production on it, most recently Calfas Cattle & Oil, LLC since January 2023.
- 1.92K
- bbl oil, all reported
- 46
- mcf gas incl. casinghead
- 42
- bbl oil, last 12 reported
- —
- vs the 12 before
- 7
- wells completed on it
- 72
- peak month, bbl (May 2009)
PDQ LEASE REPORTS · FIRST JAN 1993 · 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 42 · prior 12 97(-57%)
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.
- Clark, G. A., TrusteeJan 1993 → Sep 1996 · 45 mo
- E.A.T.E. OperatingOct 1996 → Apr 1997 · 7 mo
- Koko EnterprisesMay 1997 → Jan 1999 · 21 mo
- Stokes, O. K.Feb 1999 → Jul 2008 · 114 mo
- Southwest Loop 1604, Ltd.Aug 2008 → Jan 2014 · 66 mo
- Bar M Petroleum Co.Feb 2014 → May 2014 · 4 mo
- Petro Lions, LLCJun 2014 → Dec 2022 · 103 mo
- Calfas Cattle & Oil, LLCJan 2023 → Jul 2026 · 43 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
7
wells completed on the lease
- Producing
- 7
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-1-10800, documented in the API reference.