WELL · 42-409-32940 · DISTRICT 4
Welder A #A 37
San Patricio County · Sinton North (5020 Maduro) field · Producing · Vertical
Welder A #A 37 (API 42-409-32940) is a well in San Patricio County operated by Dallas Petroleum Group LLC, completed April 21, 2011 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued February 18, 2011, permitted to 6,300 ft.
It was permitted by Sydri Operating, LLC and has since transferred to Dallas Petroleum Group LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Miocene (undifferentiated), Oakville, Catahoula, Frio.
Its lease has reported 168K barrels of oil and 89.5K mcf of gas since November 1995, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Sydri Operating, LLC; the EWA schedule now lists a different operator.
Dallas, TX · P-5 Y, filed Sep 4, 2025 · 19 permits on file · (972) 770-0547
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Dallas Petroleum Group LLC |
| Production reports | Dallas Petroleum Group, LLCthrough Apr 2026 |
| Latest permit | Sydri Operating, LLCFeb 18, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,300
- total depth, ft
- 2
- permits on file
- Feb 18, 2011
- last permit issued
- Apr 21, 2011
- completed
- 168K
- cumulative oil, bbl
- 89.5K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 1995 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 21, 2011
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Welder "A" O-4-12512 | Sinton, North (5020 Maduro) | Dallas Petroleum Group, LLC | 2 | 168K | 89.5K | Nov 1995 – Jul 2026 |
Oil, barrels lease total
Last 12 months 1,199 · prior 12 1,625(-26%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Sandalwood Oil & Gas, Inc.Nov 1995 → Dec 1998
- 2Consolidated Petro Ptnrs I, LLCJan 1999 → Oct 2001
- 3Kebo Oil & Gas, Inc.Dec 2001 → Jun 2002
- 4Hazelett Oil Company, Inc.Jul 2002 → Sep 2005
- 5Hazelett Oil, Inc.Oct 2005 → Feb 2008
- 6Sydri Operating, LLCMar 2008 → Apr 2015
- 7Dallas Petroleum Group, LLCMay 2015 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 709512-98 | Drill | Sydri Operating, LLC | Aug 6, 2012 | Feb 18, 2011 | Mar 13, 2011 | 6,300 |
| 709512-99 | Drill | Sydri Operating, LLC | Jan 31, 2011 | Feb 18, 2011 | — | 6,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-12512 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 58 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE | 1,340 | -1,282 |
| Oakville | 2,575 | -2,517 |
| Catahoula | 3,700 | -3,642 |
| Frio | 5,380 | -5,322 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,022 | 5,024 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,087 | 12.25 | 445 S |
| 4.5 | 6,194 | 7.875 | 660 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 | Oct 8, 2012 | Apr 27, 2011 | Yes |
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 42-409-32940 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-409-32940 → 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/40932940, documented in the API reference.