LEASES · O-1-17442 · OIL · DISTRICT 01
Lang
ReportingMueller Exploration, Inc. · Zavala County · Pearsall (Buda, S.) field
Lang is an RRC oil lease (O-1-17442) in Zavala County operated by Mueller Exploration, Inc., with one well completed on it.
It has reported 15.3K barrels of oil and 44.3K mcf of gas since June 2012, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 650 barrels of oil, down 30% on the year before; the lease peaked at 884 barrels in October 2012.
4 operators have filed production on it, most recently Mueller Exploration, Inc. since April 2026.
- 15.3K
- bbl oil, all reported
- 44.3K
- mcf gas incl. casinghead
- 650
- bbl oil, last 12 reported
- -30%
- vs the 12 before
- 1
- wells completed on it
- 884
- peak month, bbl (Oct 2012)
PDQ LEASE REPORTS · FIRST JUN 2012 · 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 650 · prior 12 924(-30%)
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.
- U.S. Enercorp, Ltd.Jun 2012 → Mar 2016 · 46 mo
- Mueller Exploration, Inc.Apr 2016 → Mar 2025 · 108 mo
- Silver Anchor Resources LLCApr 2025 → Mar 2026 · 12 mo
- Mueller Exploration, Inc.Apr 2026 → Jul 2026 · 4 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-1-17442, documented in the API reference.