WELL · 42-507-30358 · DISTRICT 1
Glasscock Ranch A #5205
Zavala County · Pearsall (Austin Chalk) field · Vertical
Glasscock Ranch A #5205 (API 42-507-30358) is a plugged well in Zavala County, plugged February 17, 2005, last operated by Trinity Operating (Usg) LLC.
The RRC has issued one drilling permit, issued December 18, 1990, permitted to 5,000 ft.
It was permitted by Winn Exploration CO., Inc. and has since transferred to Trinity Operating (Usg) LLC on the wellbore schedule.
Completion filings report one formation top, including Olmos.
Its 3 leases have reported 277K barrels of oil and 1.12M mcf of gas since January 1993, last reporting in July 2026. The leases carry 35 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Winn Exploration Co., Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jan 28, 2026
- Permits on file
- 392
- Phone
- (713) 951-5309
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Trinity Operating (Usg) LLC |
| Production reports | Matador Production Companythrough Jul 2021 |
| Latest permit | Winn Exploration Co., Inc.Dec 18, 1990 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,000
- total depth, ft
- 1
- permits on file
- Dec 18, 1990
- last permit issued
- Nov 1, 1978
- completed
- 277K
- cumulative oil, bbl
- 1.12M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 1, 1978
- Shut in
- —
- Plugged
- Feb 17, 2005
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the 3 leases this well is completed on; they carry 35 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Glasscock, Leta O-1-9289 | Leta (Olmos) | Trinity Operating (Usg), LLC | 3 | 1.76K | 7 | Jan 1993 – Jul 2026 |
| Glasscock Ranch A O-1-9813 | Pearsall (Austin Chalk) | Trinity Operating (Usg), LLC | 29 | 275K | 1.12M | Jan 1993 – May 2024 |
| Glasscock, Leta -O- O-1-5807 | Pearsall (Austin Chalk) | Winn Exploration Co., Inc. | 3 | 39 | 20 | Jan 1993 – May 2005 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Overly Operating Co.Jan 1993 → Aug 1994
- 2Winn Exploration Co., Inc.Jan 1993 → Oct 1994
- 3McDay Energy Corp.Nov 1994 → Nov 2010
- 4Matador Production CompanyMar 2011 → Jul 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 382531-99 | Recompletion | Winn Exploration Co., Inc. | Dec 18, 1990 | Dec 18, 1990 | Dec 18, 1990 | 5,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-5807 | — | — | — | — |
| — | — O-1-9289 | — | — | — | — |
| — | — O-1-9813 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,670 | 4,715 | Perforated |
| 6,304 | 6,384 | Perforated |
| — | 6,384 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 425 | 2 | 300 S |
| 8.625 | 425 | 12.25 | 300 S |
| 4.5 | 7,000 | 7.875 | 1,160 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Mar 1, 1993 | Jan 19, 1993 | — |
| 00 | Mar 25, 1991 | Mar 6, 1991 | — |
| 00 | Mar 13, 1991 | — | — |
| 00 | Jan 12, 1984 | Jun 25, 1976 | — |
| 00 | Jan 12, 1984 | — | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-507-30358 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-507-30358 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/50730358, documented in the API reference.