LEASES · O-10-61864 · OIL · DISTRICT 08
Mabee Dda F83
COG Operating LLC · Andrews County · Spraberry (Trend Area) field
Mabee Dda F83 is an RRC oil lease (O-10-61864) in Andrews County operated by Cog Operating LLC, with one well completed on it.
It has reported 289K barrels of oil and 376K mcf of gas since September 2024, last reporting volume in April 2026 (statewide data runs through April 2026).
It reported 139K barrels of oil in the 12 months through April 2026, down 8% on the year before; the lease peaked at 28.1K barrels in September 2024.
- 289K
- bbl oil, all reported
- 376K
- mcf gas incl. casinghead
- 139K
- bbl oil, 12 months through Apr 2026
- -8%
- vs the 12 before
- 1
- wells completed on it
- 28.1K
- peak month, bbl (Sep 2024)
PDQ LEASE REPORTS · FIRST SEP 2024 · 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.
12 months through Apr 2026 138,970 · prior 12 150,322(-8%)
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.
12 months through Apr 2026 227,620 · prior 12 148,746(+53%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps hyperbolic curve fitted to the 20 reporting months of oil since the peak in Sep 2024. 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.
- 59%
- first-year decline from the peak (nominal Di 222%)
- 1.8
- b factor (hyperbolic)
- 0.94
- fit R²
- 1.57M
- 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 138,970
Fitted hyperbolic curve from the Sep 2024 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 8,103 | 7,274 | 6,646 | 6,149 |
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, with what it reported in them.
- COG Operating LLCOct 2023 → Jul 2026 · 34 mo289K bbl oil · 376K mcf gas
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-10-61864, documented in the API reference.