TEXAS · WELLS · HOCKLEY COUNTY · SUNDOWN UNIT LEASE · API 42-219-36494 · DISTRICT 7B
Sundown Unit #78
Hockley County · Slaughter field · Injection · Vertical
Sundown Unit #78 (API 42-219-36494) is a well in Hockley County operated by Hilcorp Energy Company, completed April 16, 2019 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued November 23, 1999, permitted to 5,177 ft.
It was permitted by Altura Energy Ltd. and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 4 formation tops, including Rustler, Yates, Queen, San Andres.
Its lease has reported 6.39M barrels of oil and 2.45M mcf of gas since January 1993, last reporting volume in April 2026. The lease carries 103 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 14K barrels injected in the 12 months reported through December 2025.
Operator of record
Permitted by Altura Energy Ltd.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- 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 | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Altura Energy Ltd.Nov 23, 1999 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,177
- total depth, ft
- 1
- permits on file
- Nov 23, 1999
- last permit issued
- Apr 16, 2019
- completed
- 6.39M
- cumulative oil, bbl
- 2.45M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 16, 2019
- 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.
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 103 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Sundown Unit O-11-60282 | Slaughter | Hilcorp Energy Company | 103 | 6.39M | 2.45M | Jan 1993 – Apr 2026 |
Oil, barrels lease total
Last 12 months 114,777 · prior 12 119,397(-4%)
Gas, mcf lease total
Last 12 months 65,073 · prior 12 84,558(-23%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Amoco Production CompanyJan 1993 → Feb 1997
- 2Altura Energy Ltd.Mar 1997 → Apr 2000
- 3Occidental Permian Ltd.May 2000 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 489559-99 | Drill | Altura Energy Ltd. | Nov 16, 1999 | Nov 23, 1999 | Dec 17, 1999 | 5,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 16, 2019 | Sundown Unit O-11-60282 | Slaughter | Hilcorp Energy Company | Injection | 5,177 |
Formation tops
As filed on W-2/G-1. Subsea from 3,527 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Rustler | 2,250 | 1,277 |
| Yates | 2,830 | 697 |
| Queen | 3,450 | 77 |
| San Andres | 4,430 | -903 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,902 | 5,082 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 421 | 12.25 | 250 S |
| 5.5 | 5,177 | 7.875 | 1,100 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 | Jul 26, 2019 | Jun 13, 2019 | — |
| 00 | May 3, 2016 | May 3, 2016 | — |
| 00 | Apr 25, 2000 | Feb 14, 2000 | Yes |
| 00 | Mar 28, 2000 | — | — |
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 42-219-36494 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-219-36494 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 14K
- bbl, last 12 reported months
- 1.82M
- bbl, all reported
- Dec 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000089621 | H-1 Injection | Active | 5,300 | 2,300 | 4,600–5,300 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 14,047 · prior 12 20,691(-32%)
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/21936494, documented in the API reference.