LEASES · G-4-180789 · GAS · DISTRICT 04
Zwernemann
ReportingZelaya Oil and Gas, LLC · Jim Wells County · Amargosa (Hockley H) field
Zwernemann is an RRC gas lease (G-4-180789) in Jim Wells County operated by Zelaya Oil And Gas, LLC, with one well completed on it.
It has reported 477K mcf of gas since January 2000, last reporting volume in September 2025 (statewide data runs through April 2026).
The last 12 reported months total 325 mcf of gas.
4 operators have filed production on it, most recently Zelaya Oil And Gas, LLC since November 2016.
- 477K
- mcf gas, all reported
- 0
- bbl condensate and oil
- 325
- mcf gas, last 12 reported
- —
- vs the 12 before
- 1
- wells completed on it
- —
- peak month, bbl
PDQ LEASE REPORTS · FIRST JAN 2000 · LAST VOLUME SEP 2025 · 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 325 · prior 12 5,579(-94%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps hyperbolic curve fitted to the 88 reporting months of gas since the peak in Jan 2018. 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.
- 43%
- first-year decline from the peak (nominal Di 59%)
- 0.2
- b factor (hyperbolic)
- 0.77
- fit R²
- 3.66K
- 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 325 · prior 12 5,579(-94%)
Fitted hyperbolic curve from the Jan 2018 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, mcf per month | 65 | 56 | 49 | 43 |
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.
- Sonterra Oil & Gas, Inc.Jan 2000 → Aug 2000 · 8 mo
- Cortex Energy, Inc.Sep 2000 → Feb 2016 · 186 mo
- Western Gulf Oil & Gas, LLCMar 2016 → Oct 2016 · 8 mo
- Zelaya Oil and Gas, LLCNov 2016 → Jul 2026 · 117 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-4-180789, documented in the API reference.