WELL · 42-391-01428 · DISTRICT 2
Lambert, M. F. #50
Refugio County · Vertical
Lambert, M. F. #50 (API 42-391-01428) is a permitted well in Refugio County filed by Hilcorp Energy Company; no completion report is on file yet.
The RRC has issued 5 drilling permits between 1983 and 2017, permitted to 6,000 ft.
Completion filings report 4 formation tops, including Catahoula, Frio, Top 5300, Jackson.
Its 4 leases have reported 580K barrels of oil and 1.72M mcf of gas since January 1993, last reporting in July 2026. The leases carry 48 wells, so these are lease totals, not this well alone.
Operator of record
Houston, TX · P-5 Y, filed Mar 26, 2026 · 3,453 permits on file · (713) 209-2411
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Hilcorp Energy CompanyOct 13, 2017 |
- 6,000
- total depth, ft
- 5
- permits on file
- Oct 13, 2017
- last permit issued
- —
- completed
- 580K
- cumulative oil, bbl
- 1.72M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
Surface location
28.341671, -97.170653
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Refugio County.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the 4 leases this well is completed on; they carry 48 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Lambert, M. F. O-2-2880 | Tom Oconnor (5900 Sand) | Hilcorp Energy Company | 40 | 504K | 1.58M | Jan 1993 – Jul 2026 |
| M. F. Lambert O-2-9323 | Tom Oconnor (5300, East) | Hilcorp Energy Company | 4 | 8.24K | 10.8K | May 2009 – Jul 2026 |
| M. F. Lambert G-2-241971 | Tom Oconnor | Hilcorp Energy Company | 1 | 0 | 0 | Oct 2008 – Oct 2017 |
| Lambert, M. F. O-2-8638 | Tom Oconnor (5900 Sand) | Hilcorp Energy Company | 3 | 67.8K | 132K | Jun 2001 – Dec 2011 |
Oil, barrels lease total
Last 12 months 2,305 · prior 12 3,422(-33%)
Gas, mcf lease total
Last 12 months 20 · prior 12 252(-92%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Pennzoil Exploration & Prod. Co.Jan 1993 → Feb 1999
- 2Pennzenergy Exp. & Prod., L.L.C.Mar 1999 → Mar 2000
- 3Devon Energy Production Co, L.P.Apr 2000 → Jul 2002
- 4Hilcorp Energy CompanyNov 2002 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 831621-99 | Recompletion | Hilcorp Energy Company | Oct 4, 2017 | Oct 13, 2017 | Oct 3, 2017 | 5,905 |
| 707627-99 | Recompletion | Hilcorp Energy Company | Dec 28, 2010 | Jan 7, 2011 | — | 5,905 |
| 669759-99 | Recompletion | Hilcorp Energy Company | Aug 25, 2008 | Sep 16, 2008 | Oct 1, 2008 | 5,905 |
| 509637-99 | Recompletion | Hilcorp Energy Company | May 31, 2001 | Jun 1, 2001 | — | 5,905 |
| 198000-99 | Recompletion | Pennzoil Producing Co. | Jun 13, 1983 | Jun 13, 1983 | — | 6,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-241971 | — | — | — | — |
| — | — O-2-2880 | — | — | — | — |
| — | — O-2-8638 | — | — | — | — |
| — | — O-2-9323 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 51 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,270 | 5,285 | Perforated |
| 5,649 | 5,656 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,194 | 15 | 500 S |
| 10.75 | 1,194 | — | 500 S |
| 7 | 5,895 | 9.875 | 500 S |
| 7 | 5,895 | — | 500 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 | Apr 18, 2018 | Nov 14, 2017 | — |
| 00 | Nov 20, 2008 | Nov 3, 2008 | Yes |
| 00 | Nov 12, 2008 | — | — |
| 00 | Jul 25, 2001 | — | — |
| 00 | Jan 12, 1984 | — | — |
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 42-391-01428 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-01428 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
M. F. Lambert42-391-01442
0.1 KM · Pennzoil Producing Co. · Section with this well →
| Catahoula | 3,300 | -3,236 |
| 4400 | 4,402 | -4,338 |
| Frio | 5,000 | -4,936 |
| 5100 | 5,152 | -5,088 |
| Jackson | — | |
| NO Change | — |
M. F. Lambert42-391-01446
0.3 KM · Pennzoil Producing Co. · Section with this well →
| Catahoula | 3,609 | -3,558 |
| Frio | 4,362 | -4,311 |
| Greta | 5,068 | -5,017 |
| 5675' | 5,642 | -5,591 |
| 5800' | 5,807 | -5,756 |
| 5900' | 5,886 | -5,835 |
| NO Change | — |
Tom O'Connor (5800 SD) Fld. Unit42-391-01449
0.5 KM · Quintana Pet. Corp. · Section with this well →
| Lagarto | 1,500 | -1,451 |
| Oakville | 2,750 | -2,701 |
| Anahuac | 3,300 | -3,251 |
| Catahoula | 3,300 | -3,251 |
| Anahuac | 4,100 | -4,051 |
| Frio | 4,365 | -4,316 |
| Frio | 4,365 | -4,316 |
| 4600 | 4,498 | -4,449 |
13 TOPS · FIRST 8
Lambert, M.F.42-391-33298
0.5 KM · Hilcorp Energy Company · Section with this well →
| Catahoula | 3,300 | -3,250 |
| Frio | 4,365 | -4,315 |
| Jackson | — |
Lambert, M.F.42-391-33297
0.5 KM · Hilcorp Energy Company · Section with this well →
| Catahoula | 3,300 | -3,250 |
| Frio | — | |
| Jackson | — |
O'Connor, Thomas 'A'42-391-01468
0.6 KM · Hilcorp Energy Company · Section with this well →
| Frio | 540 | -489 |
| Lagarto | 2,750 | -2,699 |
| Oakville | 3,300 | -3,249 |
| Catahoula | 3,628 | -3,577 |
| Catahoula | 4,100 | -4,049 |
| Ananhuac (Miocene) | 4,365 | -4,314 |
| Frio | 4,406 | -4,355 |
| Frio | 4,785 | -4,734 |
10 TOPS · FIRST 8
Tom O'Connor (5800 SD) Fld. Unit42-391-32701
0.6 KM · Hilcorp Energy Company · Section with this well →
| Lagarto | 2,750 | -2,696 |
| Oakville | 3,300 | -3,246 |
| Catahoula | 3,634 | -3,580 |
| Catahoula | 4,100 | -4,046 |
| Frio | 4,354 | -4,300 |
| Anahuac | 4,365 | -4,311 |
| Frio | 4,785 | -4,731 |
| Frio | 5,400 | -5,346 |
10 TOPS · FIRST 8
Tom O'Connor (5800 SD) Fld. Unit42-391-01444
0.7 KM · Hilcorp Energy Company · Section with this well →
| Lagarto | 2,750 | -2,699 |
| Catahoula | 3,618 | -3,567 |
| Oakville | 4,100 | -4,049 |
| Anahuac | 4,365 | -4,314 |
| 4400 Sand | 4,374 | -4,323 |
| Frio | 4,374 | -4,323 |
| Greta | 5,120 | -5,069 |
| Jackson | — |
9 TOPS · FIRST 8
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/39101428, documented in the API reference.