Petrora

LEASES · O-1-9813 · OIL · DISTRICT 01

Glasscock Ranch A

No volume since Jul 2021

Trinity Operating (Usg), LLC · Zavala County · Pearsall (Austin Chalk) field

Glasscock Ranch A is an RRC oil lease (O-1-9813) in Zavala County operated by Trinity Operating (Usg), LLC, with 29 wells completed on it.

It has reported 275K barrels of oil and 1.12M mcf of gas since January 1993, last reporting volume in July 2021 (statewide data runs through April 2026).

No volume was reported in the last 12 months; the last was in July 2021.

4 operators have filed production on it, most recently Trinity Operating (Usg), LLC since January 2022.

275K
bbl oil, all reported
1.12M
mcf gas incl. casinghead
0
bbl oil, last 12 reported
—
vs the 12 before
29
wells completed on it
9.23K
peak month, bbl (Aug 1993)

PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME JUL 2021 · 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 0 · prior 12 0

05001K2015201620172018201920202021202220232024

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

02004002015201620172018201920202021202220232024

Who reported it

Each run of months one operator filed the production report, oldest first.

  1. Winn Exploration Co., Inc.Jan 1993 → Oct 1994 · 22 mo
  2. McDay Energy Corp.Nov 1994 → Nov 2010 · 193 mo
  3. Matador Production CompanyDec 2010 → Dec 2021 · 133 mo
  4. Trinity Operating (Usg), LLCJan 2022 → May 2024 · 29 mo

Wells on the lease

FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL

29

wells completed on the lease

Plugged
28
NO Type on File
1

Operates them now

Trinity Operating (Usg) LLC
28
Matador Production Company
1

Newest permits

All 29 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-1-9813, documented in the API reference.