LEASES · G-4-226602 · GAS · DISTRICT 04
State-Marshall
ReportingOverton Park Oil & Gas LP · Brooks County · Kelsey (Frio Consol.) field
State-Marshall is an RRC gas lease (G-4-226602) in Brooks County operated by Overton Park Oil & Gas LP, with one well completed on it.
It has reported 208K mcf of gas since February 2007, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 942 mcf of gas.
2 operators have filed production on it, most recently Overton Park Oil & Gas LP since October 2018.
- 208K
- mcf gas, all reported
- 0
- bbl condensate and oil
- 942
- mcf gas, last 12 reported
- —
- vs the 12 before
- 1
- wells completed on it
- —
- peak month, bbl
PDQ LEASE REPORTS · FIRST FEB 2007 · LAST VOLUME APR 2026 · STATEWIDE DATA THROUGH APR 2026
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 942 · prior 12 425(+122%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps hyperbolic curve fitted to the 30 reporting months of gas since the peak in Apr 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.
- 82%
- first-year decline from the peak (nominal Di 204%)
- 0.2
- b factor (hyperbolic)
- 0.90
- fit R²
- 597
- mcf remaining on the curve, to 1 per month
Gas, mcf reported months since the peak, with the fitted curve and its projection
Last 12 months 942 · prior 12 425(+122%)
Fitted hyperbolic curve from the Apr 2022 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, mcf per month | 23 | 16 | 12 | 9 |
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.
- Exxon Mobil CorporationFeb 2007 → Sep 2018 · 140 mo
- Overton Park Oil & Gas LPOct 2018 → Jul 2026 · 94 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/g-4-226602, documented in the API reference.