LEASES · O-4-315 · OIL · DISTRICT 04
LA Brisa Ranch Partners 91
ReportingTrap Rock Oil, Ltd. · Starr County · Boyle field
La Brisa Ranch Partners 91 is an RRC oil lease (O-4-315) in Starr County operated by Trap Rock Oil, Ltd., with 12 wells completed on it.
It has reported 230K barrels of oil and 1.03M mcf of gas since January 1993, last reporting volume in March 2026 (statewide data runs through April 2026).
The last 12 reported months total 3.04K barrels of oil, down 22% on the year before; the lease peaked at 5.22K barrels in February 2011.
3 operators have filed production on it, most recently Trap Rock Oil, Ltd. since June 2009.
- 230K
- bbl oil, all reported
- 1.03M
- mcf gas incl. casinghead
- 3.04K
- bbl oil, last 12 reported
- -22%
- vs the 12 before
- 12
- wells completed on it
- 5.22K
- peak month, bbl (Feb 2011)
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 3,043 · prior 12 3,901(-22%)
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 28,626 · prior 12 31,031(-8%)
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.
- J. & M. Well Service, Inc.Jan 1993 → Feb 1995 · 26 mo
- Wright Brothers Energy, Inc.Mar 1995 → May 2009 · 171 mo
- Trap Rock Oil, Ltd.Jun 2009 → Jul 2026 · 206 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
12
wells completed on the lease
- Producing
- 5
- NO Type on File
- 3
- Shut IN
- 2
- Plugged
- 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-4-315, documented in the API reference.