TEXAS · WELLS · HOCKLEY COUNTY · SUNDOWN MERCURY LEASE · API 42-219-37221 · DISTRICT 7B
Sundown Mercury #1
Hockley County · Tstar (Abo) field · Producing · Vertical
Sundown Mercury #1 (API 42-219-37221) is a well in Hockley County operated by Hilcorp Energy Company, completed April 18, 2012 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued November 21, 2011, permitted to 8,091 ft.
It was permitted by Occidental Permian Ltd. and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 3 formation tops, including Queen, Grayburg, San Andres.
Its lease has reported 31.2K barrels of oil and 23.3K mcf of gas since April 2012, last reporting volume in August 2026.
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 Apr 2026 |
| Latest permit | Occidental Permian Ltd.Nov 21, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,091
- total depth, ft
- 1
- permits on file
- Nov 21, 2011
- last permit issued
- Apr 18, 2012
- completed
- 31.2K
- cumulative oil, bbl
- 23.3K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · MAY 2012 THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 18, 2012
- 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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Sundown Mercury O-11-69868 | Tstar (Abo) | Hilcorp Energy Company | 1 | 31.2K | 23.3K | Apr 2012 – Aug 2026 |
Gas, mcf lease total
Last 12 months 70 · prior 12 12,445(-99%)
Oil, barrels lease total
Last 12 months 622 · prior 12 849(-27%)
Wells named Sundown Mercury
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.
- 1Occidental Permian Ltd.May 2012 → Apr 2026
- 2Hilcorp Energy CompanyMay 2026 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 728547-99 | Drill | Occidental Permian Ltd. | Nov 17, 2011 | Nov 21, 2011 | Feb 24, 2012 | 8,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 18, 2012 | Sundown Mercury O-11-69868 | Tstar (Abo) | Hilcorp Energy Company | Producing | 8,091 |
Formation tops
As filed on W-2/G-1. Subsea from 3,516 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen | 3,618 | -102 |
| Grayburg | 3,888 | -372 |
| San Andres | 4,075 | -559 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,353 | 7,812 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 2,259 | 12.25 | 1,330 S |
| 5.5 | 8,091 | 7.875 | 430 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 | Dec 7, 2012 | May 15, 2012 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Dec 26, 2012. Neutron. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| NEUTRON POROSITYSpans Queen, Grayburg, San Andres | TIFF | 200 to 7,988 | Dec 26, 2012run Mar 26, 2012 | 11.5 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-219-37221 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-219-37221 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/21937221, documented in the API reference.