LEASES · O-11-66710 · OIL · DISTRICT 8A
Borden (Spraberry) Unit
ReportingEstancia Oil & Gas, LLC · Borden County · Reo (JO Mill, Lower) field
Borden (Spraberry) Unit is an RRC oil lease (O-11-66710) in Borden County operated by Estancia Oil & Gas, LLC, with 19 wells completed on it.
It has reported 1.49M barrels of oil and 426K mcf of gas since January 1993, last reporting volume in March 2026 (statewide data runs through April 2026).
The last 12 reported months total 25.1K barrels of oil, down 16% on the year before; the lease peaked at 8.82K barrels in April 2001.
6 operators have filed production on it, most recently Estancia Oil & Gas, LLC since January 2011.
- 1.49M
- bbl oil, all reported
- 426K
- mcf gas incl. casinghead
- 25.1K
- bbl oil, last 12 reported
- -16%
- vs the 12 before
- 19
- wells completed on it
- 8.82K
- peak month, bbl (Apr 2001)
PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME MAR 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 25,105 · prior 12 30,055(-16%)
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 6,226 · prior 12 7,830(-20%)
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.
- General Atlantic Resources, Inc.Jan 1993 → Dec 1994 · 24 mo
- Umc Petroleum CorporationJan 1995 → Jul 1998 · 43 mo
- Ocean Energy, Inc.Aug 1998 → May 2000 · 22 mo
- Honeck Oil CompanyJun 2000 → Apr 2007 · 83 mo
- Honeck Oil Company, LPMay 2007 → Dec 2010 · 44 mo
- Estancia Oil & Gas, LLCJan 2011 → Jul 2026 · 187 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
19
wells completed on the lease
- Producing
- 8
- Injection
- 4
- Not on Schedule
- 3
- Shut IN
- 2
- Water Supply
- 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-11-66710, documented in the API reference.