TEXAS · WELLS · HOCKLEY COUNTY · MALLET UNIT LEASE · API 42-219-36901 · DISTRICT 7B
Mallet Unit #1509W
Hockley County · Slaughter field · Injection · Vertical
Mallet Unit #1509W (API 42-219-36901) is a well in Hockley County operated by Hilcorp Energy Company, completed May 2, 2022 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued May 17, 2006, permitted to 5,160 ft.
It was permitted by Apache Corporation and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 6 formation tops, including Rustler, Yaes, Yates, Queen.
Its lease has reported 25M barrels of oil and 40.1M mcf of gas since the record begins in January 1993, last reporting volume in April 2026. The lease carries 352 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 27.8K barrels injected in the 12 months reported through December 2025.
Operator of record
Permitted by Apache Corporation; 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 | Apache CorporationMay 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.
- 5,160
- total depth, ft
- 1
- permits on file
- May 17, 2006
- last permit issued
- May 2, 2022
- completed
- 25M
- cumulative oil, bbl
- 40.1M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · ON RECORD FROM JAN 1993, THE RECORD'S FIRST MONTH, THROUGH APR 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 2, 2022
- 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 APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 352 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mallet Unit O-11-18149 | Slaughter | Hilcorp Energy Company | 352 | 25M | 40.1M | by Jan 1993 – Apr 2026 |
Oil, barrels lease total
Last 12 months 317,359 · prior 12 320,339(-1%)
Gas, mcf lease total
Last 12 months 190,334 · prior 12 288,650(-34%)
Wells named Mallet 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.
- 1Mobil Producing TX. & N.M. Inc.Jan 1993 → Oct 2004
- 2Apache CorporationNov 2004 → Apr 2025
- 3Hilcorp Energy CompanyMay 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 617897-99 | Drill | Apache Corporation | Apr 19, 2006 | May 17, 2006 | Nov 6, 2006 | 6,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 2, 2022 | Mallet Unit O-11-18149 | Slaughter | Hilcorp Energy Company | Injection | 5,160 |
Formation tops
As filed on W-2/G-1. Subsea from 3,606 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Rustler | 2,249 | 1,357 |
| Yaes | 2,858 | 748 |
| Yates | 2,858 | 748 |
| Queen | 3,623 | -17 |
| San Andres | 4,140 | -534 |
| Mallet | 4,943 | -1,337 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,958 | 5,054 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 2,250 | 12.25 | 1,120 S |
| 5.5 | 5,160 | 7.875 | 1,020 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 | Apr 20, 2023 | Dec 26, 2022 | — |
| 00 | Aug 9, 2007 | Feb 1, 2007 | Yes |
| 00 | Jul 24, 2007 | — | — |
Well logs
2 logs loaded from the RRC's log index, the latest received Dec 10, 2009. Cased hole, 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, San Andres, Mallet | TIFF | 4,081 to 5,080 | Dec 10, 2009run Nov 14, 2006 | 0.56 |
| SURVEYS CASED HOLESpans Rustler, Yaes, Yates, Queen, San Andres, Mallet | TIFF | 0 to 5,080 | Dec 10, 2009run Nov 14, 2006 | 3.85 |
"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 42-219-36901 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-219-36901 → 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
- 27.8K
- bbl, last 12 reported months
- 1.86M
- bbl, all reported
- Dec 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000097177 | H-1 Injection | Active | 2,500 | 2,350 | 4,700–5,200 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 27,794 · prior 12 80,417(-65%)
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/21936901, documented in the API reference.