TEXAS · WELLS · HOCKLEY COUNTY · SUNDOWN UNIT LEASE · API 42-219-37375 · DISTRICT 7B
Sundown Unit #100
Hockley County · Slaughter field · Injection · Directional
Sundown Unit #100 (API 42-219-37375) is a well in Hockley County operated by Hilcorp Energy Company, completed June 2, 2017 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued May 25, 2016, permitted to 5,071 ft.
It was permitted by Occidental Permian Ltd. and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 10 formation tops, including Rustler, Yates, San Andres, Abo.
Its lease has reported 6.42M barrels of oil and 2.47M mcf of gas since the record begins in January 1993, last reporting volume in August 2026. The lease carries 103 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 10.9K barrels injected in the 12 months reported through December 2025.
Operator of record
Permitted by Occidental Permian Ltd.; 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 | Hilcorp Energy Companythrough Aug 2026 |
| Latest permit | Occidental Permian Ltd.May 25, 2016 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,071
- total depth, ft
- 2
- permits on file
- May 25, 2016
- last permit issued
- Jun 2, 2017
- completed
- 6.42M
- cumulative oil, bbl
- 2.47M
- 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
- Jun 2, 2017
- 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 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 | 6.42M | 2.47M | by Jan 1993 – Aug 2026 |
Oil, barrels lease total
Last 12 months 110,311 · prior 12 115,121(-4%)
Gas, mcf lease total
Last 12 months 62,419 · prior 12 75,356(-17%)
Wells named Sundown Unit
Hilcorp Energy Company's other wells filed under this lease name in Hockley 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.
- 1Amoco Production CompanyJan 1993 → Feb 1997
- 2Altura Energy Ltd.Mar 1997 → Apr 2000
- 3Occidental Permian Ltd.May 2000 → Apr 2026
- 4Hilcorp Energy CompanyMay 2026 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 815845-98 | Drill | Occidental Permian Ltd. | Apr 11, 2017 | May 25, 2016 | May 24, 2017 | 5,700 |
| 815845-99 | Drill | Occidental Permian Ltd. | May 23, 2016 | May 25, 2016 | — | 5,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 2, 2017 | Sundown Unit O-11-60282 | Slaughter | Hilcorp Energy Company | Injection | 5,071 |
Formation tops
As filed on W-2/G-1. Subsea from 3,543 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Rustler | 2,166 | 1,377 |
| YatesYATES - OVERPRESSURE, INERT GAS | 2,761 | 782 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 4,021 | -478 |
| Abo | — | — |
| Canyon | — | — |
| Cisco | — | — |
| Clear ForkCLEARFORK | — | — |
| Santa RosaRED BED-SANTA ROSA | — | — |
| Wichita-AlbanyWICHITA ALBANY | — | — |
| Wolfcamp | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,870 | 5,052 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 2,188 | 12.25 | 1,055 S |
| 5.5 | 5,061 | 7.875 | 1,235 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 22, 2017 | Jun 19, 2017 | — |
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 42-219-37375 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-219-37375 → 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
- 10.9K
- bbl, last 12 reported months
- 42K
- bbl, all reported
- Dec 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000115169 | H-1 Injection | Active | 5,300 | 2,300 | 4,600–5,300 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 10,855 · prior 12 13,869(-22%)
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/21937375, documented in the API reference.