TEXAS · WELLS · HOCKLEY COUNTY · NORTHWEST MALLET UNIT LEASE · API 42-219-00568 · DISTRICT 7B
Northwest Mallet Unit #51W
Hockley County · Slaughter field · Injection · Vertical
Northwest Mallet Unit #51W (API 42-219-00568) is a well in Hockley County operated by Hilcorp Energy Company, completed October 27, 2011 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued September 6, 2013, permitted to 5,057 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 Rustler, Yates, San Andres.
Its lease has reported 12.9M barrels of oil and 6.64M mcf of gas since January 1993, last reporting in July 2026. The lease carries 179 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 27.5K 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 – Extension (X)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,454
- Phone
- (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Occidental Permian EOR LLC |
| Production reports | Occidental Permian Ltd.through Apr 2026 |
| Latest permit | Occidental Permian Ltd.Sep 6, 2013 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,057
- total depth, ft
- 1
- permits on file
- Sep 6, 2013
- last permit issued
- Oct 27, 2011
- completed
- 12.9M
- cumulative oil, bbl
- 6.64M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 27, 2011
- 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 179 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Northwest Mallet Unit O-11-18246 | Slaughter | Occidental Permian EOR, LLC | 179 | 12.9M | 6.64M | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 213,922 · prior 12 239,674(-11%)
Gas, mcf lease total
Last 12 months 129,108 · prior 12 133,322(-3%)
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 |
|---|---|---|---|---|---|---|
| 769289-99 | Recompletion | Occidental Permian Ltd. | Aug 30, 2013 | Sep 6, 2013 | Oct 12, 2011 | 5,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 27, 2011 | Northwest Mallet Unit O-11-18246 | Slaughter | Hilcorp Energy Company | Injection | 5,057 |
Formation tops
As filed on W-2/G-1. Subsea from 3,635 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Rustler | 2,217 | 1,418 |
| Yates | 2,860 | 775 |
| San Andres | 4,103 | -468 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,898 | 4,915 | Perforated |
| 4,918 | 5,002 | Perforated |
| 4,918 | 5,002 | Open hole |
| 4,918 | 5,057 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 235 | 12.25 | 135 S |
| 8.625 | 235 | — | — |
| 5.5 | 4,903 | — | — |
| 5.5 | 4,918 | 7.875 | 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. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Nov 12, 2024 | Sep 18, 2024 | — |
| 00 | Jun 24, 2014 | Dec 3, 2012 | — |
| 00 | Oct 7, 1992 | Aug 21, 1992 | — |
| 00 | May 31, 1989 | May 15, 1989 | — |
| 00 | Jan 12, 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 42-219-00568 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-219-00568 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 27.5K
- bbl, last 12 reported months
- 2.25M
- bbl, all reported
- Dec 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000027053 | H-1 Injection | Active | 5,500 | 2,300 | 4,783–5,100 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 27,486 · prior 12 39,977(-31%)
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/21900568, documented in the API reference.