LEASES · O-1-9351 · OIL · DISTRICT 01
Kiefer, Chester
ReportingS-Resources, LLC · Zavala County · Windmill Creek (Escondido) field
Kiefer, Chester is an RRC oil lease (O-1-9351) in Zavala County operated by S-Resources, LLC, with 15 wells completed on it.
It has reported 61.1K barrels of oil and 81 mcf of gas since January 1993, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 2.08K barrels of oil, up 1% on the year before; the lease peaked at 856 barrels in July 2012.
5 operators have filed production on it, most recently S-Resources, LLC since October 2025.
- 61.1K
- bbl oil, all reported
- 81
- mcf gas incl. casinghead
- 2.08K
- bbl oil, last 12 reported
- +1%
- vs the 12 before
- 15
- wells completed on it
- 856
- peak month, bbl (Jul 2012)
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 2,081 · prior 12 2,068(+1%)
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.
- Quatro Oil and Gas, Inc.Jan 1993 → Nov 1998 · 71 mo
- Brown, John Oil Co.Dec 1998 → Mar 2002 · 40 mo
- Regency Energy, Inc.Apr 2002 → Mar 2012 · 120 mo
- Bollinger Drilling Co.Apr 2012 → Sep 2025 · 162 mo
- S-Resources, LLCOct 2025 → Jul 2026 · 10 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
15
wells completed on the lease
- Producing
- 14
- Plugged
- 1
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-1-9351, documented in the API reference.