WELL · 42-115-31589 · DISTRICT 8
South Welch Unit #1310 W
Dawson County · Welch field · Injection · Vertical
South Welch Unit #1310 W (API 42-115-31589) is a well in Dawson County operated by Oxy USA Wtp Eor LLC, completed January 2, 2024 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued September 9, 1981, permitted to 5,200 ft.
It was permitted by Cities Service Company and has since transferred to Oxy USA Wtp Eor LLC on the wellbore schedule.
Completion filings report one formation top, including San Andres.
Its lease has reported 12.8M barrels of oil and 43.7M mcf of gas since January 1993, last reporting in July 2026. The lease carries 274 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 172K barrels injected in the 12 months reported through August 2025.
Operator of record
Permitted by Cities Service Company; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Jan 7, 2026 · (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | OXY USA WTP EOR LLC |
| Production reports | OXY USA WTP LPthrough Apr 2026 |
| Latest permit | Cities Service CompanySep 9, 1981 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,200
- total depth, ft
- 1
- permits on file
- Sep 9, 1981
- last permit issued
- Jan 2, 2024
- completed
- 12.8M
- cumulative oil, bbl
- 43.7M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 2, 2024
- 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 274 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| South Welch Unit O-11-60337 | Welch | OXY USA WTP EOR, LLC | 274 | 12.8M | 43.7M | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 67,671 · prior 12 81,324(-17%)
Gas, mcf lease total
Last 12 months 70,235 · prior 12 75,216(-7%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1OXY USA Inc.Jan 1993 → Dec 2000
- 2OXY USA WTP LPJan 2001 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 132955-99 | Drill | Cities Service Company | Sep 9, 1981 | Sep 9, 1981 | Oct 20, 1981 | 5,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-60337 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,093 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 4,873 | -1,780 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 873 | 4,981 | Perforated |
| 4,873 | 4,981 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,869 | 12.25 | 900 S |
| 2.375 | 4,846 | — | — |
| 5.5 | 5,026 | 7.875 | 1,300 S |
| 5.5 | 5,029 | 7.875 | 1,300 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 2, 2024 | Jun 18, 2024 | — |
| 00 | Dec 14, 1990 | Oct 17, 1990 | — |
| 00 | Jan 12, 1984 | Jun 1, 1982 | — |
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 42-115-31589 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-115-31589 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. then paste it into their search.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 172K
- bbl, last 12 reported months
- 4.81M
- bbl, all reported
- Aug 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000044083 | H-1 Injection | Active | 850 | 2,225 | 4,873–4,981 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 172,221 · prior 12 135,927(+27%)
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/11531589, documented in the API reference.