LEASES · O-5-3274 · OIL · DISTRICT 05
Swain, O. L. 11B
ReportingBasa Resources, Inc. · Van Zandt County · Van (Austin Chalk) field
Swain, O. L. 11b is an RRC oil lease (O-5-3274) in Van Zandt County operated by Basa Resources, Inc., with 7 wells completed on it.
It has reported 172K barrels of oil and 349K mcf of gas since January 1993, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 1.76K barrels of oil; the lease peaked at 4.85K barrels in December 1994.
2 operators have filed production on it, most recently Basa Resources, Inc. since January 2021.
- 172K
- bbl oil, all reported
- 349K
- mcf gas incl. casinghead
- 1.76K
- bbl oil, last 12 reported
- —
- vs the 12 before
- 7
- wells completed on it
- 4.85K
- peak month, bbl (Dec 1994)
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 1,763 · prior 12 0
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 6,023 · prior 12 923(+553%)
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.
- Union Oil Company of CaliforniaJan 1993 → Dec 2020 · 336 mo
- Basa Resources, Inc.Jan 2021 → Jul 2026 · 67 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
7
wells completed on the lease
- Plugged
- 4
- Producing
- 3
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-5-3274, documented in the API reference.