LEASES · O-1-3841 · OIL · DISTRICT 01
Greiner, Fred P.
ReportingViva Petrol LLP · Dunlap field
Greiner, Fred P. is an RRC oil lease (O-1-3841) in the Dunlap field operated by Viva Petrol LLP, with 2 wells completed on it.
It has reported 12.2K barrels of oil and 63 mcf of gas since January 1993, last reporting volume in January 2026 (statewide data runs through April 2026).
The last 12 reported months total 19 barrels of oil, down 90% on the year before; the lease peaked at 340 barrels in May 2003.
8 operators have filed production on it, most recently Viva Petrol LLP since June 2025.
- 12.2K
- bbl oil, all reported
- 63
- mcf gas incl. casinghead
- 19
- bbl oil, last 12 reported
- -90%
- vs the 12 before
- 2
- wells completed on it
- 340
- peak month, bbl (May 2003)
PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME JAN 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 19 · prior 12 184(-90%)
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 hyperbolic curve fitted to the 29 reporting months of oil since the peak in Aug 2023. 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.
- 85%
- first-year decline from the peak (nominal Di 212%)
- 0.1
- b factor (hyperbolic)
- 0.75
- fit R²
- 1
- 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 19 · prior 12 184(-90%)
Fitted hyperbolic curve from the Aug 2023 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 1 | 0 | 0 | 0 |
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.
- T. A. W. CompanyJan 1993 → Dec 1998 · 72 mo
- Stan's ServicesJan 1999 → Jun 2001 · 30 mo
- Centex Pipe & Equipment, Inc.Jul 2001 → Apr 2006 · 58 mo
- Colorado Oil & Gas, LLCMay 2006 → Jan 2007 · 9 mo
- Texas $aver, L.L.C.Feb 2007 → Nov 2010 · 46 mo
- Geomeg Energy Operating Co., LLCDec 2010 → Nov 2020 · 120 mo
- Origin Production Company, Inc.Dec 2020 → May 2025 · 54 mo
- Viva Petrol LLPJun 2025 → Jul 2026 · 14 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-1-3841, documented in the API reference.