LEASES · O-9-11389 · OIL · DISTRICT 7C
Windham "4H"
ReportingDiamondback E&P LLC · Upton County · Spraberry (Trend Area) field
Windham "4h" is an RRC oil lease (O-9-11389) in Upton County operated by Diamondback E&P LLC, with 9 wells completed on it.
It has reported 266K barrels of oil and 614K mcf of gas since January 1993, last reporting volume in June 2025 (statewide data runs through April 2026).
The last 12 reported months total 83 barrels of oil, down 76% on the year before; the lease peaked at 2.31K barrels in December 1998.
9 operators have filed production on it, most recently Diamondback E&P LLC since May 2025.
- 266K
- bbl oil, all reported
- 614K
- mcf gas incl. casinghead
- 83
- bbl oil, last 12 reported
- -76%
- vs the 12 before
- 9
- wells completed on it
- 2.31K
- peak month, bbl (Dec 1998)
PDQ LEASE REPORTS · FIRST JAN 1993 · 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 83 · prior 12 348(-76%)
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 0 · prior 12 0
Decline curve
None shown. Petrora fits an Arps curve only when the last ten years of oil reports follow one decline closely enough to project (R² of 0.7 or better over at least a year since the peak). This lease's recent history does not, so a projection would be a guess dressed as a number.
Who reported it
Each run of months one operator filed the production report, oldest first.
- Costilla Petroleum CorporationJan 1993 → Jan 1997 · 49 mo
- Costilla Energy, Inc.Feb 1997 → Dec 1997 · 11 mo
- Concho Resources Inc.Jan 1998 → Jun 2001 · 42 mo
- Devon Energy Production Co, L.P.Jul 2001 → Jun 2002 · 12 mo
- Merit Energy CompanyJul 2002 → Nov 2013 · 137 mo
- Hunt Oil CompanyDec 2013 → Jan 2018 · 50 mo
- Endeavor Energy Resources L.P.Feb 2018 → May 2023 · 64 mo
- DE IV Operating, LLCJun 2023 → Apr 2025 · 23 mo
- Diamondback E&P LLCMay 2025 → Jul 2026 · 15 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
9
wells completed on the lease
- Plugged
- 5
- Shut IN
- 3
- NO Type on File
- 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-9-11389, documented in the API reference.