TEXAS · WELLS · DAWSON COUNTY · SOUTH WELCH UNIT LEASE · API 42-115-32091 · DISTRICT 7B
South Welch Unit #512
Dawson County · Welch field · Producing · Vertical
South Welch Unit #512 (API 42-115-32091) is a well in Dawson County operated by Hilcorp Energy Company, completed May 11, 1991 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued August 23, 1984, permitted to 4,945 ft.
It was permitted by Cities Service Oil & Gas Corp. and has since transferred to Hilcorp Energy Company 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 the record begins in January 1993, last reporting volume in August 2026. The lease carries 274 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Cities Service Oil & Gas Corp.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,458
- Phone
- (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hilcorp Energy Company |
| Production reports | OXY USA WTP EOR, LLCthrough Apr 2026 |
| Latest permit | Cities Service Oil & Gas Corp.Aug 23, 1984 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,945
- total depth, ft
- 1
- permits on file
- Aug 23, 1984
- last permit issued
- May 11, 1991
- completed
- 12.8M
- cumulative oil, bbl
- 43.7M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · ON RECORD FROM JAN 1993, THE RECORD'S FIRST MONTH, THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 11, 1991
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH AUG 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 | Hilcorp Energy Company | 274 | 12.8M | 43.7M | by Jan 1993 – Aug 2026 |
Oil, barrels lease total
Last 12 months 64,449 · prior 12 74,517(-14%)
Gas, mcf lease total
Last 12 months 48,028 · prior 12 70,079(-31%)
Wells named South Welch Unit
Hilcorp Energy Company's other wells filed under this lease name in Dawson County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain 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
- 3Hilcorp Energy CompanyMay 2026 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 249223-99 | Drill | Cities Service Oil & Gas Corp. | Aug 17, 1984 | Aug 23, 1984 | — | 5,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 11, 1991 | South Welch Unit O-11-60337 | Welch | Hilcorp Energy Company | Producing | 4,945 |
Formation tops
As filed on W-2/G-1. Subsea from 3,087 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 4,840 | -1,753 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,840 | 4,945 | Perforated |
| 4,876 | 4,928 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,988 | 12.25 | 1,000 S |
| 5.5 | 4,840 | 7.875 | 1,150 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jun 14, 1991 | Jun 5, 1991 | — |
| 00 | Jun 16, 1987 | Jun 5, 1987 | — |
| 00 | Oct 29, 1984 | Oct 19, 1984 | — |
| 00 | Oct 24, 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 42-115-32091 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-115-32091 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it. The University Lands library has no per-well link: then paste it into its 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/11532091, documented in the API reference.