WELL · 42-055-34431 · DISTRICT 1
Walker C.R. #9
Caldwell County · Salt Flat field · Vertical
Walker C.R. #9 (API 42-055-34431) is a plugged well in Caldwell County, plugged December 19, 2025, last operated by Petrosaurus Inc..
The RRC has issued one drilling permit, issued April 21, 1989, permitted to 3,000 ft.
It was permitted by Keck Partners and has since transferred to Petrosaurus Inc. on the wellbore schedule.
Completion filings report 3 formation tops, including Navarro, Pecan Gap, Austin Chalk.
Its lease has reported 12.2K barrels of oil and 34.1K mcf of gas since January 1993, last reporting in July 2026. The lease carries 10 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Keck Partners; the EWA schedule now lists a different operator.
Somerset, TX · P-5 Y, filed May 4, 2026 · (210) 336-6355
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Petrosaurus Inc. |
| Production reports | Oiltex, LLCthrough Jun 2019 |
| Latest permit | Keck PartnersApr 21, 1989 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,000
- total depth, ft
- 1
- permits on file
- Apr 21, 1989
- last permit issued
- Jul 12, 1989
- completed
- 12.2K
- cumulative oil, bbl
- 34.1K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jul 12, 1989
- Shut in
- —
- Plugged
- Dec 19, 2025
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; they carry 10 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Walker, C.R. O-1-11918 | Salt Flat | Petrosaurus, Inc. | 10 | 12.2K | 34.1K | Jan 1993 – Jul 2026 |
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.
- 1Coalinga CorporationJan 1993 → Nov 1996
- 2Spiller, J.A.Dec 1996 → Jun 1998
- 3Caltex Energy Co.Jul 1998 → Mar 2011
- 4CCR Operating, LLCApr 2011 → Jul 2011
- 5Luling O&G LLCAug 2011 → Aug 2015
- 6Oiltex, LLCSep 2017 → Jun 2019
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 358433-99 | Drill | Keck Partners | Apr 21, 1989 | Apr 21, 1989 | — | 3,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-11918 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 346 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Navarro | 1,320 | -974 |
| Pecan Gap | 2,104 | -1,758 |
| Austin ChalkAUSTIN CHALK TOP | 2,419 | -2,073 |
| Austin ChalkAUSTIN CHALK UPPER | 2,505 | -2,159 |
| Austin ChalkAUSTIN CHALK MIDDLE | 2,578 | -2,232 |
| Austin ChalkAUSTIN CHALK LOWER | 2,642 | -2,296 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,453 | 2,574 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 5.5 | 2,688 | 7.875 | 442 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 | Aug 8, 1989 | Jul 26, 1989 | Yes |
| 00 | Aug 2, 1989 | — | — |
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 42-055-34431 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-055-34431 → 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/05534431, documented in the API reference.