Sponberg, J. O.

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.

Barrels reported on Form PR for the whole lease. The latest months are revised upward as late reports arrive.

An Arps hyperbolic curve fitted to the 34 reporting months of gas since the peak in Jul 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.

19%

first-year decline from the peak (nominal D_i 26%)

2.0

b factor (hyperbolic)

0.77

fit R²

285K

mcf remaining on the curve, to 1 per month

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.

1. Pennzoil Exploration & Prod. Co.Jan 1993 → Feb 1999 · 74 mo
2. Pennzenergy Exp. & Prod., L.L.C.Mar 1999 → Mar 2000 · 13 mo
3. Devon Energy Production Co, L.P.Apr 2000 → Jul 2014 · 172 mo
4. Linn Operating, Inc.Aug 2014 → Apr 2017 · 33 mo
5. Linn Operating, LLCMay 2017 → Jul 2017 · 3 mo
6. Urban Oil & Gas Group, LLCAug 2017 → Jul 2026 · 108 mo

All 1 wells, searchable →