WELL · 42-507-32075 · DISTRICT 1
Walker Ranch #1
Zavala County · Curtis (Olmos) field · Vertical
Walker Ranch #1 (API 42-507-32075) is a plugged well in Zavala County, plugged July 2, 2003, last operated by J-W Operating CO..
The RRC has issued one drilling permit, issued September 4, 1984, permitted to 1,200 ft.
It was permitted by Matzinger Petroleum CO and has since transferred to J-W Operating CO. on the wellbore schedule.
Completion filings report 4 formation tops, including Wilcox, Navarro, Escondido, Olmos.
Operator of record
Permitted by Matzinger Petroleum Co; the EWA schedule now lists a different operator.
Addison, TX · P-5 Y, filed Apr 4, 2026 · 350 permits on file · (903) 312-9595
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | J-W Operating Co. |
| Production reports | J-W Operating Co.through Jul 2002 |
| Latest permit | Matzinger Petroleum CoSep 4, 1984 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 1,200
- total depth, ft
- 1
- permits on file
- Sep 4, 1984
- last permit issued
- Dec 10, 1990
- completed
- 0
- cumulative oil, bbl
- 72K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2003
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 10, 1990
- Shut in
- —
- Plugged
- Jul 2, 2003
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 lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Walker Ranch G-1-114568 | Curtis (Olmos) | J-W Operating Co. | 1 | 0 | 72K | Jan 1993 – Jul 2003 |
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.
- 1J-W Operating Co.Jan 1993 → Jul 2002
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 250340-99 | Drill | Matzinger Petroleum Co | Nov 12, 1984 | Sep 4, 1984 | — | 1,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-1-114568 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 766 | 772 | Perforated |
| 1,018 | 1,026 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 6.625 | 180 | 8.75 | 40 S |
| 2.875 | 1,139 | 5.75 | 175 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 | Jun 27, 1991 | Jan 10, 1991 | — |
| 00 | Feb 12, 1985 | Jan 7, 1985 | — |
| 00 | Feb 1, 1985 | Dec 27, 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 42-507-32075 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-507-32075 → 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/50732075, documented in the API reference.