WELL · 42-409-32509 · DISTRICT 4
Mayo Blaschke #20
San Patricio County · Plymouth (I-65) field · Vertical
Mayo Blaschke #20 (API 42-409-32509) is a plugged well in San Patricio County, plugged November 23, 2004, last operated by Hec Petroleum Inc..
The RRC has issued one drilling permit (amended once), issued November 22, 1996, permitted to 10,500 ft.
It was permitted by Cox Resources Corp. and has since transferred to Hec Petroleum Inc. on the wellbore schedule.
Completion filings report 6 formation tops, including I-35, I-35a, I-40, I-47.
Operator of record
Permitted by Cox Resources Corp.; the EWA schedule now lists a different operator.
Midland, TX · P-5 Y, filed Mar 3, 2006
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hec Petroleum Inc. |
| Production reports | Hec Petroleum, Inc.through Aug 2004 |
| Latest permit | Cox Resources Corp.Nov 22, 1996 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,500
- total depth, ft
- 2
- permits on file
- Nov 22, 1996
- last permit issued
- Dec 6, 1997
- completed
- 0
- cumulative oil, bbl
- 314K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 1997 THROUGH Mar 2005
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 6, 1997
- Shut in
- —
- Plugged
- Nov 23, 2004
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 |
|---|---|---|---|---|---|---|
| Mayo, Blaschke G-4-167646 | Plymouth (I-65) | Hec Petroleum, Inc. | 1 | 0 | 314K | Dec 1997 – Mar 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.
- 1Cox Resources Corp.Dec 1997 → Jun 2000
- 2Hallwood Petroleum, Inc.Jul 2000 → Dec 2001
- 3Hec Petroleum, Inc.Jan 2002 → Aug 2004
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 455535-98 | Drill | Cox Resources Corp. | Apr 22, 1998 | Nov 22, 1996 | Nov 23, 1996 | 10,500 |
| 455535-99 | Drill | Cox Resources Corp. | Nov 22, 1996 | Nov 22, 1996 | — | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-167646 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 41 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| I-35 | 8,241 | -8,200 |
| I-35A | 8,267 | -8,226 |
| I-40 | 8,398 | -8,357 |
| I-47 | 8,452 | -8,411 |
| I=65 | 8,578 | -8,537 |
| 9500 Sand | 9,416 | -9,375 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,582 | 8,644 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,624 | 14.75 | 950 S |
| 7.625 | 9,468 | 9.875 | 1,113 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 | May 14, 1998 | Jan 8, 1998 | Yes |
| 00 | Apr 30, 1998 | — | — |
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 42-409-32509 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-409-32509 → 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/40932509, documented in the API reference.