LEASES · G-4-117239 · GAS · DISTRICT 04
Marshall, S.G.
ReportingMountain V Texas, LLC · Zapata County · Las Ovejas, W. (8400) field
Marshall, S.G. is an RRC gas lease (G-4-117239) in Zapata County operated by Mountain V Texas, LLC, with one well completed on it.
It has reported 793K mcf of gas since January 1993, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 13.2K mcf of gas.
4 operators have filed production on it, most recently Mountain V Texas, LLC since April 2026.
- 793K
- mcf gas, all reported
- 0
- bbl condensate and oil
- 13.2K
- mcf gas, last 12 reported
- —
- vs the 12 before
- 1
- wells completed on it
- —
- peak month, bbl
PDQ LEASE REPORTS · FIRST JAN 1993 · 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 13,205 · prior 12 17,364(-24%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps hyperbolic curve fitted to the 19 reporting months of gas since the peak in Oct 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.
- 38%
- first-year decline from the peak (nominal Di 80%)
- 2.0
- b factor (hyperbolic)
- 0.73
- fit R²
- 190K
- 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 13,205
Fitted hyperbolic curve from the Oct 2024 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, mcf per month | 847 | 776 | 720 | 675 |
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.
- Enron Oil & Gas CompanyJan 1993 → Sep 1999 · 81 mo
- EOG Resources, Inc.Oct 1999 → Aug 2016 · 203 mo
- Smith Production Inc.Sep 2016 → Mar 2026 · 115 mo
- Mountain V Texas, LLCApr 2026 → Jul 2026 · 4 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-4-117239, documented in the API reference.