LEASES · O-3-15144 · OIL · DISTRICT 03
Havemann Unit
ReportingMagnolia Oil & Gas Operating LLC · Fayette County · Giddings (Austin Chalk-3) field
Havemann Unit is an RRC oil lease (O-3-15144) in Fayette County operated by Magnolia Oil & Gas Operating LLC, with one well completed on it.
It has reported 95.2K barrels of oil and 239K mcf of gas since January 1993, last reporting volume in October 2025 (statewide data runs through April 2026).
The last 12 reported months total 41 barrels of oil; the lease peaked at 3.06K barrels in December 1994.
6 operators have filed production on it, most recently Magnolia Oil & Gas Operating LLC since September 2021.
- 95.2K
- bbl oil, all reported
- 239K
- mcf gas incl. casinghead
- 41
- bbl oil, last 12 reported
- —
- vs the 12 before
- 1
- wells completed on it
- 3.06K
- peak month, bbl (Dec 1994)
PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME OCT 2025 · 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 41 · prior 12 8(+413%)
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
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps exponential curve fitted to the 18 reporting months of oil since the peak in May 2022. The dashed line below is that curve, drawn over the months it was fitted to and then 24 months past the last report; where it parts from the columns is where the model stops describing the lease. It describes the trend of past reports. It does not know about recompletions, shut-ins, or new wells, and it is shown only when the lease reported within the last year and the curve explains most of the history.
- 64%
- first-year decline from the peak (nominal Di 103%)
- 0.0
- b factor (exponential)
- 0.71
- fit R²
- 37
- bbl remaining on the curve, to 1 per month
Oil, barrels reported months since the peak, with the fitted curve and its projection
Last 12 months 41 · prior 12 8(+413%)
Fitted exponential curve from the May 2022 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 2 | 1 | 1 | 1 |
Quoting a projected figure as if it were reported would be wrong; the reported figures are the ones in the charts and the table view. How production is reported →
Who reported it
Each run of months one operator filed the production report, oldest first.
- United Oil & Minerals, Inc.Jan 1993 → Aug 1994 · 20 mo
- Keystone Exploration, IncSep 1994 → Dec 1997 · 40 mo
- United Oil & Minerals, Inc.Jan 1998 → Dec 1998 · 12 mo
- WCS Oil and Gas CorporationJan 1999 → Apr 2005 · 76 mo
- WCS Oil & Gas CorporationMay 2005 → Aug 2021 · 196 mo
- Magnolia Oil & Gas Operating LLCSep 2021 → Jul 2026 · 59 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-3-15144, documented in the API reference.