LEASES · O-9-17637 · OIL · DISTRICT 7C
Mary
ReportingSummit Petroleum LLC · Upton County · Spraberry (Trend Area) field
Mary is an RRC oil lease (O-9-17637) in Upton County operated by Summit Petroleum LLC, with 9 wells completed on it.
It has reported 488K barrels of oil and 3.12M mcf of gas since July 2011, last reporting volume in June 2025 (statewide data runs through April 2026).
The last 12 reported months total 53 barrels of oil, down 99% on the year before; the lease peaked at 22.7K barrels in October 2011.
2 operators have filed production on it, most recently Summit Petroleum LLC since March 2017.
- 488K
- bbl oil, all reported
- 3.12M
- mcf gas incl. casinghead
- 53
- bbl oil, last 12 reported
- -99%
- vs the 12 before
- 9
- wells completed on it
- 22.7K
- peak month, bbl (Oct 2011)
PDQ LEASE REPORTS · FIRST JUL 2011 · LAST VOLUME JUN 2025 · 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 53 · prior 12 5,189(-99%)
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 110 · prior 12 53,187(-100%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps exponential curve fitted to the 110 reporting months of oil since the peak in May 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.
- 19%
- first-year decline from the peak (nominal Di 21%)
- 0.0
- b factor (exponential)
- 0.82
- fit R²
- 17.1K
- 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 53 · prior 12 5,189(-99%)
Fitted exponential curve from the May 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 | 273 | 245 | 221 | 199 |
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.
- COG Operating LLCJul 2011 → Feb 2017 · 68 mo
- Summit Petroleum LLCMar 2017 → Jun 2026 · 112 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
9
wells completed on the lease
- Plugged
- 9
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.
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