LEASES · O-3-23863 · OIL · DISTRICT 03
Tannenberger Unit
ReportingMagnolia Oil & Gas Operating LLC · Fayette County · Giddings (Austin Chalk-3) field
Tannenberger Unit is an RRC oil lease (O-3-23863) in Fayette County operated by Magnolia Oil & Gas Operating LLC, with 2 wells completed on it.
It has reported 133K barrels of oil and 1.13M mcf of gas since November 1999, last reporting volume in March 2026 (statewide data runs through April 2026).
The last 12 reported months total 3.05K barrels of oil, down 43% on the year before; the lease peaked at 1.98K barrels in June 2001.
4 operators have filed production on it, most recently Magnolia Oil & Gas Operating LLC since August 2018.
- 133K
- bbl oil, all reported
- 1.13M
- mcf gas incl. casinghead
- 3.05K
- bbl oil, last 12 reported
- -43%
- vs the 12 before
- 2
- wells completed on it
- 1.98K
- peak month, bbl (Jun 2001)
PDQ LEASE REPORTS · FIRST NOV 1999 · 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 3,051 · prior 12 5,366(-43%)
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 19,699 · prior 12 29,895(-34%)
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.
- Swift Energy CompanyNov 1999 → Jun 2003 · 44 mo
- Anadarko E&P Company LPJul 2003 → Jul 2007 · 49 mo
- Enervest Operating, L.L.C.Aug 2007 → Jul 2018 · 132 mo
- Magnolia Oil & Gas Operating LLCAug 2018 → Jul 2026 · 96 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
2
wells completed on the lease
- NO Type on File
- 1
- Shut IN
- 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-3-23863, documented in the API reference.