LEASES · O-1-1103 · OIL · DISTRICT 01
Shanklin, W. R.
ReportingTexas Petroleum Investment Co. · Guadalupe County · Luling-Branyon field
Shanklin, W. R. is an RRC oil lease (O-1-1103) in Guadalupe County operated by Texas Petroleum Investment CO., with 2 wells completed on it.
It has reported 84.3K barrels of oil and 44 mcf of gas since January 1993, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 17.6K barrels of oil, down 33% on the year before; the lease peaked at 4.67K barrels in October 2023.
6 operators have filed production on it, most recently Texas Petroleum Investment CO. since October 2006.
- 84.3K
- bbl oil, all reported
- 44
- mcf gas incl. casinghead
- 17.6K
- bbl oil, last 12 reported
- -33%
- vs the 12 before
- 2
- wells completed on it
- 4.67K
- peak month, bbl (Oct 2023)
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 17,631 · prior 12 26,231(-33%)
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
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps hyperbolic curve fitted to the 31 reporting months of oil since the peak in Oct 2023. 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.
- 55%
- first-year decline from the peak (nominal Di 145%)
- 1.4
- b factor (hyperbolic)
- 0.97
- fit R²
- 208K
- 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 17,631 · prior 12 26,231(-33%)
Fitted hyperbolic curve from the Oct 2023 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 1,165 | 1,059 | 973 | 903 |
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.
- Meridian Oil Production Inc.Jan 1993 → Feb 1996 · 38 mo
- Meridian Oil Inc.Mar 1996 → Jul 1996 · 5 mo
- Burlington Resources Oil&gas Co.Aug 1996 → Mar 1997 · 8 mo
- Vintage Petroleum, Inc.Apr 1997 → Apr 2006 · 109 mo
- Vintage Petroleum, LLCMay 2006 → Sep 2006 · 5 mo
- Texas Petroleum Investment Co.Oct 2006 → Jul 2026 · 238 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
2
wells completed on the lease
- Producing
- 1
- Shut In
- 1
Operates them now
Newest permits
- 18733702 #1HMar 3, 2023
- — #5—
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-1-1103, documented in the API reference.