Petrora

LEASES · O-9-12217 · OIL · DISTRICT 7C

Simpson-Mann "C"

Reporting

Core Petro, LLC · Tom Green County · Atkinson, W. (San Angelo) field

Simpson-Mann "C" is an RRC oil lease (O-9-12217) in Tom Green County operated by Core Petro, LLC, with one well completed on it.

It has reported 811 barrels of oil and 32 mcf of gas since January 1993, last reporting volume in April 2026 (statewide data runs through April 2026).

The last 12 reported months total 32 barrels of oil; the lease peaked at 73 barrels in January 1993.

4 operators have filed production on it, most recently Core Petro, LLC since June 2021.

811
bbl oil, all reported
32
mcf gas incl. casinghead
32
bbl oil, last 12 reported
—
vs the 12 before
1
wells completed on it
73
peak month, bbl (Jan 1993)

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 32 · prior 12 25(+28%)

02462017201820192020202120222023202420252026

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

012017201820192020202120222023202420252026

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.

  1. Lawrence, C. F. & Assoc. Inc.Jan 1993 → Jul 1994 · 19 mo
  2. Earnest Producing CorporationAug 1994 → Feb 1996 · 19 mo
  3. Armor Petroleum, Inc.Mar 1996 → May 2021 · 303 mo
  4. Core Petro, LLCJun 2021 → Jul 2026 · 62 mo

Wells on the lease

FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL

1

wells completed on the lease

Producing
1

Operates them now

Core Petro LLC
1

Newest permits

All 1 wells, searchable →

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-9-12217, documented in the API reference.