LEASES · O-9-1277 · OIL · DISTRICT 7C
Shannon Estate -B-
ReportingClark Oil Co. · Crockett County · Shannon (San Andres) field
Shannon Estate -B- is an RRC oil lease (O-9-1277) in Crockett County operated by Clark Oil CO., with 57 wells completed on it.
It has reported 945K barrels of oil and 22 mcf of gas since January 1993, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 20.7K barrels of oil, down 19% on the year before; the lease peaked at 6.02K barrels in November 2012.
5 operators have filed production on it, most recently Clark Oil CO. since July 2017.
- 945K
- bbl oil, all reported
- 22
- mcf gas incl. casinghead
- 20.7K
- bbl oil, last 12 reported
- -19%
- vs the 12 before
- 57
- wells completed on it
- 6.02K
- peak month, bbl (Nov 2012)
PDQ LEASE REPORTS · FIRST JAN 1993 · 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.
Last 12 months 20,735 · prior 12 25,630(-19%)
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.
- Energy Production CorporationJan 1993 → Nov 2002 · 119 mo
- Zephyr Lone Star Oper Co.,l.l.c.Dec 2002 → Dec 2002 · 1 mo
- Sundown Energy, Inc.Jan 2003 → Jan 2005 · 25 mo
- Sundown Energy LPFeb 2005 → Jun 2017 · 149 mo
- Clark Oil Co.Jul 2017 → Jul 2026 · 109 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
57
wells completed on the lease
- Producing
- 20
- NO Type on File
- 12
- Injection
- 12
- Plugged
- 8
- Shut IN
- 5
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-9-1277, documented in the API reference.