WELL · 42-479-37331 · DISTRICT 4
Martin-Volz #1
Webb County · Hereford (Lobo) field · Vertical
Martin-Volz #1 (API 42-479-37331) is a plugged well in Webb County, plugged January 17, 2001, last operated by Sandalwood Oil & Gas Inc..
The RRC has issued one drilling permit, issued August 31, 1999, permitted to 8,000 ft.
It was permitted by Grimes Energy Company and has since transferred to Sandalwood Oil & Gas Inc. on the wellbore schedule.
Completion filings report one formation top, including Wilcox.
Operator of record
Permitted by Grimes Energy Company; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Nov 4, 2025 · 92 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sandalwood Oil & Gas Inc. |
| Production reports | Sandalwood Oil & Gas, Inc.through Nov 2000 |
| Latest permit | Grimes Energy CompanyAug 31, 1999 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,000
- total depth, ft
- 1
- permits on file
- Aug 31, 1999
- last permit issued
- Oct 1, 1999
- completed
- 0
- cumulative oil, bbl
- 82.6K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 1999 THROUGH May 2001
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 1, 1999
- Shut in
- —
- Plugged
- Jan 17, 2001
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 |
|---|---|---|---|---|---|---|
| Martin-Volz G-4-174951 | Hereford (Lobo) | Sandalwood Oil & Gas, Inc. | 1 | 0 | 82.6K | Oct 1999 – May 2001 |
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.
- 1Sandalwood Oil & Gas, Inc.Nov 1999 → Nov 2000
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 487122-99 | Drill | Grimes Energy Company | Aug 31, 1999 | Aug 31, 1999 | Sep 12, 1999 | 8,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-174951 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 483 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| WilcoxMID WILCOX | 4,800 | -4,317 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,578 | 5,583 | Perforated |
| 5,585 | 5,593 | Perforated |
| 5,597 | 5,606 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 985 | 14.75 | 650 S |
| 7.625 | 5,800 | 9.875 | 673 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 | Dec 20, 1999 | Nov 18, 1999 | Yes |
| 00 | Dec 7, 1999 | — | — |
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 42-479-37331 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-37331 → 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/47937331, documented in the API reference.