LEASES · O-9-18628 · OIL · DISTRICT 7C
Rock Hollow D
ReportingDiscovery Natural Resources LLC · Reagan County and Irion · Spraberry (Trend Area) field
Rock Hollow D is an RRC oil lease (O-9-18628) in Reagan County operated by Discovery Natural Resources LLC, with 11 wells completed on it.
It has reported 550K barrels of oil and 6.87M mcf of gas since May 2012, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 16.4K barrels of oil, down 10% on the year before; the lease peaked at 62.2K barrels in May 2018.
2 operators have filed production on it, most recently Discovery Natural Resources LLC since June 2014.
- 550K
- bbl oil, all reported
- 6.87M
- mcf gas incl. casinghead
- 16.4K
- bbl oil, last 12 reported
- -10%
- vs the 12 before
- 11
- wells completed on it
- 62.2K
- peak month, bbl (May 2018)
PDQ LEASE REPORTS · FIRST MAY 2012 · 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 16,430 · prior 12 18,286(-10%)
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 602,226 · prior 12 655,562(-8%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps hyperbolic curve fitted to the 96 reporting months of oil since the peak in May 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.
- 89%
- first-year decline from the peak (nominal Di 775%)
- 1.0
- b factor (hyperbolic)
- 0.88
- fit R²
- 244K
- 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 16,430 · prior 12 18,286(-10%)
Fitted hyperbolic curve from the May 2018 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 1,202 | 1,135 | 1,076 | 1,022 |
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.
- Fiml Natural Resources, LLCMay 2012 → Sep 2012 · 5 mo
- Discovery Natural Resources LLCJun 2014 → Jul 2026 · 146 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
11
wells completed on the lease
- NO Type on File
- 6
- Producing
- 4
- Plugged
- 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-9-18628, documented in the API reference.