LEASES · O-9-18778 · OIL · DISTRICT 7C
Elwood 16-21
Pioneer Natural Res. USA, Inc. · Upton County · Spraberry (Trend Area) R 40 Exc field
Elwood 16-21 is an RRC oil lease (O-9-18778) in Upton County operated by Pioneer Natural Res. USA, Inc., with one well completed on it.
It has reported 344K barrels of oil and 2.39M mcf of gas since September 2014, last reporting volume in August 2026 (statewide data runs through August 2026).
It reported 2.35K barrels of oil in the 12 months through August 2026, down 44% on the year before; the lease peaked at 27.5K barrels in September 2014.
2 operators have filed production on it, most recently Pioneer Natural Res. USA, Inc. since February 2021.
- 344K
- bbl oil, all reported
- 2.39M
- mcf gas incl. casinghead
- 2.35K
- bbl oil, 12 months through Aug 2026
- -44%
- vs the 12 before
- 1
- wells completed on it
- 27.5K
- peak month, bbl (Sep 2014)
PDQ LEASE REPORTS · FIRST SEP 2014 · LAST VOLUME AUG 2026 · STATEWIDE DATA THROUGH AUG 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 Aug 2026 2,354 · prior 12 4,209(-44%)
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 Aug 2026 92,160 · prior 12 179,776(-49%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps hyperbolic curve fitted to the 106 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.
- 47%
- first-year decline from the peak (nominal Di 69%)
- 0.3
- b factor (hyperbolic)
- 0.83
- fit R²
- 8.46K
- 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 2,354 · prior 12 4,209(-44%)
Fitted hyperbolic curve from the Nov 2017 peak, dashed 24 months past the last report
| Projected month | Feb 2027 | Aug 2027 | Feb 2028 | Aug 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 111 | 99 | 88 | 79 |
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, with what it reported in them.
- Parsley Energy Operations, LLCAug 2014 → Jan 2021 · 78 mo319K bbl oil · 1.35M mcf gas
- Pioneer Natural Res. USA, Inc.Feb 2021 → Nov 2026 · 70 mo25.6K bbl oil · 1.05M mcf gas
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 Aug 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-9-18778, documented in the API reference.