TEXAS · WELLS · HOCKLEY COUNTY · NORTHWEST MALLET UNIT LEASE · API 42-219-36905 · DISTRICT 7B
Northwest Mallet Unit #173
Hockley County · Slaughter field · Injection · Vertical
Northwest Mallet Unit #173 (API 42-219-36905) is a well in Hockley County operated by Hilcorp Energy Company, completed December 28, 2019 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued May 17, 2006, permitted to 5,048 ft.
It was permitted by Oxy USA Wtp LP and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 5 formation tops, including Yates, Seven Rivers, Queen, Grayburg.
Its lease has reported 12.9M barrels of oil and 6.64M mcf of gas since January 1993, last reporting volume in April 2026. The lease carries 179 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit.
Operator of record
Permitted by OXY USA WTP LP; 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 | Occidental Permian EOR, LLCthrough Apr 2026 |
| Latest permit | OXY USA WTP LPMay 17, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,048
- total depth, ft
- 2
- permits on file
- May 17, 2006
- last permit issued
- Dec 28, 2019
- completed
- 12.9M
- cumulative oil, bbl
- 6.64M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 28, 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 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 – Apr 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 |
|---|---|---|---|---|---|---|
| 617972-98 | Drill | OXY USA WTP LP | Jun 22, 2006 | May 17, 2006 | Sep 17, 2006 | 5,400 |
| 617972-99 | Drill | Occidental Permian Ltd. | Apr 21, 2006 | May 17, 2006 | Sep 17, 2006 | 5,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Dec 28, 2019 | Northwest Mallet Unit O-11-18246 | Slaughter | Hilcorp Energy Company | Injection | 5,048 |
Formation tops
As filed on W-2/G-1. Subsea from 3,626 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,852 | 774 |
| Seven Rivers | 3,058 | 568 |
| Queen | 3,623 | 3 |
| Grayburg | 3,910 | -284 |
| San Andres | 4,105 | -479 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,857 | 4,988 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 447 | 12.25 | 350 S |
| 5.5 | 5,048 | 7.875 | 1,050 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 | Nov 5, 2024 | Aug 9, 2024 | — |
| 00 | Aug 8, 2007 | Jun 28, 2007 | Yes |
| 00 | Jul 23, 2007 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Nov 9, 2007. 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 PorosityCOMPENSATED NEUTRON HNGSSpans Yates, Seven Rivers, Queen, Grayburg, San Andres | TIFF | to 5,048 | Nov 9, 2007run Nov 14, 2006 | — |
"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 42-219-36905 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-219-36905 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 120K
- bbl, all reported
- Dec 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000096886 | H-1 Injection | Active | 5,000 | 2,350 | 4,700–5,200 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 0
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/21936905, documented in the API reference.