WELL · 42-409-30340 · DISTRICT 4
Welder J.F. Unit #C 40
San Patricio County · Odem (6160) field · Vertical
Welder J.F. Unit #C 40 (API 42-409-30340) is a well in San Patricio County operated by Chevron U. S. A. Inc., completed October 26, 1973.
The RRC has issued 2 drilling permits between 1985 and 1991, permitted to 6,314 ft.
It was permitted by Texaco Inc. and has since transferred to Chevron U. S. A. Inc. on the wellbore schedule.
Its 3 leases have reported 616K barrels of oil and 7.33M mcf of gas since January 1993, last reporting in July 2026. The leases carry 33 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Texaco Inc.; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jan 30, 2026
- Permits on file
- 9,293
- Phone
- (866) 212-1212
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Chevron U. S. A. Inc. |
| Production reports | 84 Energy LLCthrough Aug 2025 |
| Latest permit | Texaco Inc.Jan 15, 1991 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,314
- total depth, ft
- 2
- permits on file
- Jan 15, 1991
- last permit issued
- Oct 26, 1973
- completed
- 616K
- cumulative oil, bbl
- 7.33M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 26, 1973
- 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 3 leases this well is completed on; they carry 33 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Welder, J.F. Unit O-4-12145 | Odem (Massive Frio) | 84 Energy LLC | 30 | 616K | 7.33M | Jan 1993 – Jul 2026 |
| Welder, J. F. Unit O-4-7841 | Odem (5560) | Texaco E & P Inc. | 3 | 209 | 1.98K | Jan 1993 – Dec 1996 |
| — O-4-10954 | — | — | 0 | 0 | 0 | — |
Gas, mcf lease total
Last 12 months 0 · prior 12 21,442(-100%)
Oil, barrels lease total
Last 12 months 75 · prior 12 2,438(-97%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Texaco E & P Inc.Jan 1993 → Feb 1995
- 2Smith Production Inc.Mar 1995 → Apr 1999
- 3Energen Resources CorporationMay 1999 → Aug 2003
- 4Aroc (Texas) Inc.Sep 2003 → Feb 2005
- 5Southern Bay Operating, L.L.C.Mar 2005 → Jun 2013
- 6HK Energy Operating, LLCJul 2013 → Oct 2013
- 7Wagner Oil CompanyNov 2013 → Jul 2020
- 8GTG Operating, LLCAug 2020 → Dec 2024
- 984 Energy LLCJan 2025 → Aug 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 383242-99 | Recompletion | Texaco Inc. | Jan 9, 1991 | Jan 15, 1991 | Jan 23, 1991 | 6,314 |
| 284567-99 | Recompletion | Texaco Inc. | Sep 9, 1985 | Sep 10, 1985 | — | 6,314 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-7841 | — | — | — | — |
| — | — O-4-10954 | — | — | — | — |
| — | — O-4-12145 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,550 | 5,618 | Perforated |
| 5,709 | 5,725 | Perforated |
| 5,879 | 5,886 | Perforated |
| 5,906 | 5,910 | Perforated |
| 5,924 | 5,928 | Perforated |
| 5,966 | 5,976 | Perforated |
| — | 6,143 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 625 | 13.75 | 275 S |
| 9.625 | 625 | 14.75 | 275 S |
| 5.5 | 6,280 | 8.75 | 700 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 7, 1996 | Mar 29, 1996 | — |
| 00 | Feb 3, 1993 | Apr 2, 1991 | Yes |
| 00 | Apr 25, 1991 | Apr 2, 1991 | Yes |
| 00 | Apr 9, 1991 | Jan 23, 1986 | Yes |
| 00 | Feb 19, 1986 | Jan 23, 1986 | Yes |
| 00 | Jan 31, 1986 | — | — |
| 00 | Jan 12, 1984 | Nov 1, 1973 | — |
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 42-409-30340 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-409-30340 → 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/40930340, documented in the API reference.