LEASES · O-10-49660 · OIL · DISTRICT 08
Rio Rojo 27-30 Unit 1
ReportingDiamondback E&P LLC · Midland County · Spraberry (Trend Area) field
Rio Rojo 27-30 Unit 1 is an RRC oil lease (O-10-49660) in Midland County operated by Diamondback E&P LLC, with 6 wells completed on it.
It has reported 2.06M barrels of oil and 7.4M mcf of gas since November 2017, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 71.2K barrels of oil, down 11% on the year before; the lease peaked at 117K barrels in November 2017.
2 operators have filed production on it, most recently Diamondback E&P LLC since January 2025.
- 2.06M
- bbl oil, all reported
- 7.4M
- mcf gas incl. casinghead
- 71.2K
- bbl oil, last 12 reported
- -11%
- vs the 12 before
- 6
- wells completed on it
- 117K
- peak month, bbl (Nov 2017)
PDQ LEASE REPORTS · FIRST NOV 2017 · 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.
Last 12 months 71,223 · prior 12 80,242(-11%)
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 927,060 · prior 12 727,087(+28%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps hyperbolic curve fitted to the 102 reporting months of oil since the peak in Nov 2017. 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.
- 62%
- first-year decline from the peak (nominal Di 146%)
- 0.8
- b factor (hyperbolic)
- 0.98
- fit R²
- 867K
- 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 71,223 · prior 12 80,242(-11%)
Fitted hyperbolic curve from the Nov 2017 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 4,916 | 4,619 | 4,352 | 4,112 |
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.
- Endeavor Energy Resources L.P.Nov 2017 → Dec 2024 · 86 mo
- Diamondback E&P LLCJan 2025 → Jul 2026 · 19 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
6
wells completed on the lease
- Producing
- 3
- Shut IN
- 3
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-10-49660, documented in the API reference.