WELL · 42-391-30230 · DISTRICT 2
Mary F. Lambert -E- #E 4
Refugio County · Tom Oconnor (5200 East) field · Shut IN · Vertical
Mary F. Lambert -E- #E 4 (API 42-391-30230) is a well in Refugio County operated by Hilcorp Energy Company, completed May 25, 2017 and listed as shut in on the RRC schedule, shut in May 1, 2017.
The RRC has issued one drilling permit (amended once), issued September 15, 2009, permitted to 6,010 ft.
Completion filings report 3 formation tops, including Catahoula, Frio, Jackson.
Its 2 leases have reported 22.5K barrels of oil and 56.8K mcf of gas since January 1993, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
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 | Hilcorp Energy Company |
| Production reports | Hilcorp Energy Companythrough May 2017 |
| Latest permit | Hilcorp Energy CompanySep 15, 2009 |
- 6,010
- total depth, ft
- 2
- permits on file
- Sep 15, 2009
- last permit issued
- May 25, 2017
- completed
- 22.5K
- cumulative oil, bbl
- 56.8K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 25, 2017
- Shut in
- May 1, 2017
- 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 2 leases this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mary F. Lambert -E- O-2-9435 | Tom Oconnor (5200, East) | Hilcorp Energy Company | 1 | 13.4K | 20.9K | May 2010 – Jul 2026 |
| Lambert, Mary F. O-2-4888 | Tom Oconnor (5450 Sand) | Hilcorp Energy Company | 1 | 9.05K | 35.9K | Jan 1993 – Oct 2010 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Exxon Corp.Jan 1993 → May 1995
- 2Hilcorp Energy CompanyJan 2006 → May 2017
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 685011-98 | Recompletion | Hilcorp Energy Company | May 4, 2010 | Sep 15, 2009 | Apr 6, 2010 | 6,010 |
| 685011-99 | Recompletion | Hilcorp Energy Company | Sep 11, 2009 | Sep 15, 2009 | — | 6,010 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 25, 2017 | Mary F. Lambert -E- O-2-9435 | Tom Oconnor (5200 East) | Hilcorp Energy Company | Shut IN · shut in May 1, 2017 | 6,010 |
| Oct 22, 1972 | Lambert Mary F. O-2-4888 | Tom Oconnor (5450 Sand) | Hilcorp Energy Company | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 49 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,148 | 5,156 | Perforated |
| 5,215 | 5,247 | Perforated |
| 5,486 | 5,490 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,558 | 12.25 | 550 S |
| 8.625 | 1,558 | — | 550 S |
| 5.5 | 5,993 | — | 705 S |
| 5.5 | 5,996 | 7.875 | 655 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 | Sep 12, 2017 | Jul 5, 2017 | — |
| 00 | Nov 10, 2010 | Jun 10, 2010 | Yes |
| 00 | Aug 30, 2010 | — | — |
| 00 | Jan 12, 1984 | Nov 29, 1972 | — |
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 42-391-30230 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-30230 → 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/39130230, documented in the API reference.