WELL · 42-219-35687 · DISTRICT 8
East Mallet Unit #140
Hockley County · Slaughter field · Producing · Vertical
East Mallet Unit #140 (API 42-219-35687) is a well in Hockley County operated by Hilcorp Energy Company, completed July 24, 2025 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued October 26, 1990, permitted to 5,200 ft.
It was permitted by Mobil Producing TX. & N.M. Inc. and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 3 formation tops, including San Andres, 1st Slaughter, 2nd Slaughter.
Its lease has reported 14.8M barrels of oil and 42.7M mcf of gas since January 1993, last reporting in July 2026. The lease carries 197 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Mobil Producing TX. & N.M. Inc.; 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 | Hilcorp Energy Company |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Mobil Producing TX. & N.M. Inc.Oct 26, 1990 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,200
- total depth, ft
- 1
- permits on file
- Oct 26, 1990
- last permit issued
- Jul 24, 2025
- completed
- 14.8M
- cumulative oil, bbl
- 42.7M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 24, 2025
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 197 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| East Mallet Unit O-11-15298 | Slaughter | Hilcorp Energy Company | 197 | 14.8M | 42.7M | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 107,457 · prior 12 92,524(+16%)
Gas, mcf lease total
Last 12 months 82,308 · prior 12 121,461(-32%)
Chain 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 → Mar 2025
- 3Hilcorp Energy CompanyApr 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 379936-99 | Drill | Mobil Producing TX. & N.M. Inc. | Oct 22, 1990 | Oct 26, 1990 | — | 5,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-15298 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,595 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 4,157 | -562 |
| San Andres | 4,168 | -573 |
| San AndresTOP SAN ANDRES | 4,924 | -1,329 |
| 1ST Slaughter | 4,927 | -1,332 |
| 2ND Slaughter | 4,983 | -1,388 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,912 | 5,038 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 542 | 12.25 | 350 S |
| 5.5 | 5,070 | 7.875 | 1,200 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 | Dec 4, 2025 | Nov 6, 2025 | — |
| 00 | Feb 8, 1991 | Jan 25, 1991 | Yes |
| 00 | Feb 5, 1991 | — | — |
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 42-219-35687 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-219-35687 → 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.
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/21935687, documented in the API reference.