LEASES · O-1-15172 · OIL · DISTRICT 01
Swaim 58
ReportingAtlas Operating LLC · McMullen County · San Miguel Creek (Wilcox Cons.) field
Swaim 58 is an RRC oil lease (O-1-15172) in Mcmullen County operated by Atlas Operating LLC, with 3 wells completed on it.
It has reported 80.7K barrels of oil since March 2010, last reporting volume in March 2026 (statewide data runs through April 2026).
The last 12 reported months total 1.38K barrels of oil, up 50% on the year before; the lease peaked at 2.56K barrels in April 2010.
4 operators have filed production on it, most recently Atlas Operating LLC since April 2021.
- 80.7K
- bbl oil, all reported
- 0
- mcf gas incl. casinghead
- 1.38K
- bbl oil, last 12 reported
- +50%
- vs the 12 before
- 3
- wells completed on it
- 2.56K
- peak month, bbl (Apr 2010)
PDQ LEASE REPORTS · FIRST MAR 2010 · 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 1,378 · prior 12 921(+50%)
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.
- Ncey Holdings, LLCMar 2010 → Jul 2010 · 5 mo
- Wynn-Crosby Operating, Ltd.Aug 2010 → Aug 2016 · 73 mo
- Eagle Oil & Gas Co.Sep 2016 → Mar 2021 · 55 mo
- Atlas Operating LLCApr 2021 → Jul 2026 · 64 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
3
wells completed on the lease
- 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-1-15172, documented in the API reference.