WELL · 42-409-30011 · DISTRICT 4
Welder R. H. -B- #18
San Patricio County · Sinton North (5600) field · Vertical
Welder R. H. -B- #18 (API 42-409-30011) is a well in San Patricio County operated by Marathon Oil Company, completed May 1, 1969.
The RRC has issued one drilling permit, issued December 15, 1977, permitted to 6,015 ft.
Completion filings report one formation top, including Frio.
No lease production has been reported under this well’s leases.
It holds an active disposal or injection permit.
Operator of record
Houston, TX · P-5 Y, filed Apr 4, 2026 · 3,707 permits on file · (800) 332-9449
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil Company |
| Production reports | none |
| Latest permit | Marathon Oil CompanyDec 15, 1977 |
- 6,015
- total depth, ft
- 1
- permits on file
- Dec 15, 1977
- last permit issued
- May 1, 1969
- completed
- 0
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 1, 1969
- Shut in
- —
- Plugged
- —
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 |
|---|---|---|---|---|---|---|
| Welder, R. H., -B- O-4-7109 | Sinton, North | Dallas Petroleum Group, LLC | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 14076-99 | Recompletion | Marathon Oil Company | Dec 15, 1977 | Dec 15, 1977 | — | 6,015 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-7109 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 55 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Frio | 1,800 | -1,745 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,795 | 2,808 | Perforated |
| 2,812 | 2,831 | Perforated |
| 2,837 | 2,874 | Perforated |
| 5,594 | 5,600 | Perforated |
| — | 3,005 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,139 | 12.25 | 450 S |
| 8.625 | 1,140 | 12.25 | 450 S |
| 5.5 | 6,014 | 7.875 | 816 S |
| 5.25 | 6,040 | 7.875 | 816 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 | Jun 30, 1988 | Mar 10, 1988 | — |
| 00 | Jan 12, 1984 | Dec 30, 1977 | — |
| 00 | Jan 12, 1984 | Feb 22, 1973 | — |
| 00 | Jan 12, 1984 | — | — |
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 42-409-30011 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-409-30011 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 3.42M
- bbl, all reported
- Jan 2026
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000004627 | W-14 Disposal | Active | 4,000 | 500 | 2,500–3,050 |
| 000049928 | W-14 Disposal | Canceled Apr 2, 1984 | 0 | 0 | 2,950–3,050 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 0
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/40930011, documented in the API reference.