WELL · 42-505-31136 · DISTRICT 4
Martinez E.T. #4
Zapata County · LA Perla (Wilcox 6800) field · Producing · Vertical
Martinez E.T. #4 (API 42-505-31136) is a well in Zapata County operated by Hilcorp Energy Company, completed October 16, 2016 and listed as producing on the RRC schedule.
The RRC has issued 3 drilling permits between 1979 and 2016, permitted to 8,737 ft.
Completion filings report 7 formation tops, including Jackson, Yegua, Queen City, Miocene (undifferentiated).
No lease production has been reported under this well’s leases.
Operator of record
- 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 | Chevron U. S. A. Inc. |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Hilcorp Energy CompanySep 13, 2016 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,737
- total depth, ft
- 3
- permits on file
- Sep 13, 2016
- last permit issued
- Oct 16, 2016
- completed
- 0
- cumulative oil, bbl
- 1.68M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 16, 2016
- 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 3 leases this well is completed on; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Martinez, E.T. G-4-289708 | LA Perla (Wilcox 6800) | Hilcorp Energy Company | 1 | 0 | 589K | Oct 2016 – Jul 2026 |
| Martinez, E.T. G-4-143481 | Bashara-Hereford (7300) | Hilcorp Energy Company | 1 | 0 | 1.09M | Jan 1993 – Sep 2018 |
| Martinez, E.T. G-4-86371 | Laredo (Lobo) | Chevron U. S. A. Inc. | 1 | 0 | 0 | Jan 1993 – Mar 1993 |
Gas, mcf lease total
Last 12 months 32,665 · prior 12 35,458(-8%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Chevron U. S. A. Inc.Jan 1993 → Aug 2014
- 2Hilcorp Energy CompanySep 2014 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 817725-99 | Recompletion | Hilcorp Energy Company | Aug 12, 2016 | Sep 13, 2016 | Sep 24, 2016 | 8,737 |
| 404580-99 | Recompletion | Chevron U. S. A. Inc. | Oct 12, 1992 | Oct 16, 1992 | Oct 24, 1992 | 8,737 |
| 57380-99 | Drill | Gulf Oil Corp. | Sep 6, 1979 | Sep 6, 1979 | Sep 26, 1979 | 8,737 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 16, 2016 | Martinez E.T. G-4-289708 | LA Perla (Wilcox 6800) | Hilcorp Energy Company | Producing | 8,737 |
| Jun 29, 1996 | Martinez E.T. G-4-143481 | Bashara-Hereford (7300) | Hilcorp Energy Company | Not on Schedule | — |
| Jan 16, 1980 | Martinez E.T. G-4-86371 | Laredo (Lobo) | Chevron U. S. A. Inc. | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 457 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Jackson | 140 | 317 |
| Yegua | 700 | -243 |
| Queen City | 900 | -443 |
| Queen City | 1,544 | -1,087 |
| Miocene (undifferentiated)MIOCENE-LAGARTO-OAKVILLE | 2,000 | -1,543 |
| Wilcox | 2,600 | -2,143 |
| Cook Mountain | 2,900 | -2,443 |
| CarrizoCARRIZO WILCOX | 3,703 | -3,246 |
| WilcoxLOWER WILCOX | 4,650 | -4,193 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,805 | 5,833 | Perforated |
| 7,876 | 7,896 | Perforated |
| 8,080 | 8,100 | Perforated |
| 8,441 | 8,528 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 972 | 13.5 | 600 S |
| 7.625 | 6,405 | 9.625 | 750 S |
| 2.375 | 8,356 | — | — |
| 5 | 8,648 | 6.75 | 1,150 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 | Aug 25, 2020 | Jul 22, 2020 | — |
| 00 | Sep 16, 1996 | Aug 5, 1996 | — |
| 00 | Feb 3, 1993 | Dec 17, 1992 | Yes |
| 00 | Jan 12, 1993 | — | — |
| 00 | Jan 12, 1984 | Feb 15, 1980 | — |
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 42-505-31136 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-505-31136 → 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/50531136, documented in the API reference.