LEASES · O-1-18210 · OIL · DISTRICT 01
Maund Ranch 26 Unit
Javelin Energy Partners Mgmt LLC · Dimmit County · Briscoe Ranch (Eagleford) field
Maund Ranch 26 Unit is an RRC oil lease (O-1-18210) in Dimmit County operated by Javelin Energy Partners Mgmt LLC, with 2 wells completed on it.
It has reported 179K barrels of oil and 940K mcf of gas since October 2014, last reporting volume in April 2026 (statewide data runs through April 2026).
It reported 426 barrels of oil in the 12 months through April 2026, down 41% on the year before; the lease peaked at 20.3K barrels in November 2014.
3 operators have filed production on it, most recently Javelin Energy Partners Mgmt LLC since September 2023.
- 179K
- bbl oil, all reported
- 940K
- mcf gas incl. casinghead
- 426
- bbl oil, 12 months through Apr 2026
- -41%
- vs the 12 before
- 2
- wells completed on it
- 20.3K
- peak month, bbl (Nov 2014)
PDQ LEASE REPORTS · FIRST OCT 2014 · 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 426 · prior 12 716(-41%)
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 3,666 · prior 12 6,974(-47%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps exponential curve fitted to the 109 reporting months of oil since the peak in Dec 2016. 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.
- 33%
- first-year decline from the peak (nominal Di 40%)
- 0.0
- b factor (exponential)
- 0.73
- fit R²
- 1.01K
- 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 426 · prior 12 716(-41%)
Fitted exponential curve from the Dec 2016 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 28 | 23 | 19 | 16 |
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.
- Anadarko E&P Onshore LLCOct 2014 → Feb 2017 · 29 mo
- SN EF Maverick, LLCMar 2017 → Aug 2023 · 78 mo
- Javelin Energy Partners Mgmt LLCSep 2023 → Jul 2026 · 35 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
2
wells completed on the lease
- Producing
- 1
- Not on Schedule
- 1
Operates them now
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-1-18210, documented in the API reference.