LEASES · O-10-37511 · OIL · DISTRICT 08
Fasken "56"
Diamondback E&P LLC · Midland County · Spraberry (Trend Area) field
Fasken "56" is an RRC oil lease (O-10-37511) in Midland County operated by Diamondback E&P LLC, with 2 wells completed on it.
It has reported 204K barrels of oil and 444K mcf of gas since April 2005, last reporting volume in April 2026 (statewide data runs through April 2026).
It reported 13.7K barrels of oil in the 12 months through April 2026, up 169% on the year before; the lease peaked at 3.39K barrels in January 2006.
2 operators have filed production on it, most recently Diamondback E&P LLC since January 2025.
- 204K
- bbl oil, all reported
- 444K
- mcf gas incl. casinghead
- 13.7K
- bbl oil, 12 months through Apr 2026
- +169%
- vs the 12 before
- 2
- wells completed on it
- 3.39K
- peak month, bbl (Jan 2006)
PDQ LEASE REPORTS · FIRST APR 2005 · 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 13,673 · prior 12 5,083(+169%)
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 15,302 · prior 12 8,026(+91%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps exponential curve fitted to the 12 reporting months of oil since the peak in May 2025. 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.
- 96%
- first-year decline from the peak (nominal Di 328%)
- 0.0
- b factor (exponential)
- 0.77
- fit R²
- 620
- 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 13,673
Fitted exponential curve from the May 2025 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 33 | 6 | 1 | 0 |
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.
- Endeavor Energy Resources L.P.Apr 2005 → Dec 2024 · 237 mo187K bbl oil · 427K mcf gas
- Diamondback E&P LLCJan 2025 → Jul 2026 · 19 mo16.3K bbl oil · 17.5K mcf gas
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
2
wells completed on the lease
- Producing
- 2
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-10-37511, documented in the API reference.