TEXAS · WELLS · BRAZOS COUNTY · WALKER, MARY LEASE · API 42-041-31575 · DISTRICT 03
Walker Mary #2
Brazos County · Giddings (Austin Chalk-3) field · Shut In · Horizontal
Walker Mary #2 (API 42-041-31575) is a horizontal well in Brazos County operated by Wildfire Energy Operating LLC, completed April 4, 1992 and listed as shut in on the RRC schedule, shut in June 1, 2022.
The RRC has issued one drilling permit, issued January 17, 1992, permitted to 13,833 ft.
It was permitted by Union Pacific Resources Company and has since transferred to Wildfire Energy Operating LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Midway, Navarro, Pecan Gap, Austin Chalk.
Its lease has reported 79.2K barrels of oil and 604K mcf of gas since January 1993, with no volume in the three years through April 2026.
Operator of record
Permitted by Union Pacific Resources Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Nov 24, 2025
- Permits on file
- 171
- Phone
- (832) 558-0100
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Wildfire Energy Operating LLC |
| Production reports | Wildfire Energy Operating LLCthrough Jul 2021 |
| Latest permit | Union Pacific Resources CompanyJan 17, 1992 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,833
- total depth, ft
- 1
- permits on file
- Jan 17, 1992
- last permit issued
- Apr 4, 1992
- completed
- 79.2K
- cumulative oil, bbl
- 604K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2021
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 4, 1992
- Shut in
- Jun 1, 2022
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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, Mary O-3-21659 | Giddings (Austin Chalk-3) | Wildfire Energy Operating LLC | 1 | 79.2K | 604K | Jan 1993 – Jul 2021 |
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.
- 1Union Pacific Resources CompanyJan 1993 → Jan 2001
- 2Rme Petroleum CompanyFeb 2001 → Nov 2002
- 3Anadarko E&P Company LPDec 2002 → Jul 2007
- 4Enervest Operating, L.L.C.Aug 2007 → Jan 2015
- 5Apache CorporationOct 2019 → Mar 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 395976-99 | Drill | Union Pacific Resources Company | Jan 17, 1992 | Jan 17, 1992 | Jan 25, 1992 | 14,450 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 4, 1992 | Walker Mary O-3-21659 | Giddings (Austin Chalk-3) | Wildfire Energy Operating LLC | Shut In · shut in Jun 1, 2022 | 13,833 |
Formation tops
As filed on W-2/G-1. Subsea from 281 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Midway | 5,667 | -5,386 |
| Navarro | 7,238 | -6,957 |
| Pecan Gap | 8,236 | -7,955 |
| Austin Chalk | 9,444 | -9,163 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,595 | 13,833 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 2,240 | 14.75 | 1,110 S |
| 7.625 | 9,595 | 9.875 | 295 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Oct 14, 1992 | Apr 13, 1992 | Yes |
| 00 | Sep 29, 1992 | — | — |
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 42-041-31575 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-041-31575 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
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/04131575, documented in the API reference.