WELL · 42-391-31888 · DISTRICT 2

Lambert Gas Unit #201

Lambert Gas Unit #201 (API 42-391-31888) is a permitted well in Refugio County filed by Hilcorp Energy Company; no completion report is on file yet.

The RRC has issued 6 drilling permits between 1985 and 2017, permitted to 6,200 ft.

Completion filings report 7 formation tops, including Lagarto, Oakville, Catahoula, Anahuac.

Its 4 leases have reported 24M barrels of oil and 18.5M mcf of gas since January 1993, last reporting in July 2026. The leases carry 691 wells, so these are lease totals, not this well alone.

Operator of record

Hilcorp Energy Company

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 CompanyJun 27, 2017

6,200: total depth, ft
6: permits on file
Jun 27, 2017: last permit issued
—: completed
24M: cumulative oil, bbl
18.5M: 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

28.332590, -97.189121

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 691 wells in total, so volumes are shared.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Lambert, M. F. O-2-2590	Tom Oconnor (5500 Sand)	Hilcorp Energy Company	39	446K	1.58M	Jan 1993 – Jul 2026
Lambert, M. F. O-2-2880	Tom Oconnor (5900 Sand)	Hilcorp Energy Company	40	504K	1.58M	Jan 1993 – Jul 2026
Tom Oconnor (5800 SD) Fld. Unit O-2-5280	Tom Oconnor (5800)	Hilcorp Energy Company	594	22.8M	14.9M	Jan 1993 – Jul 2026
Lambert, M.F. O-2-8906	Tom Oconnor (5200, East)	Hilcorp Energy Company	18	274K	418K	Aug 2004 – Jul 2026

Oil, barrels lease total

Last 12 months 682,353 · prior 12 544,528(+25%)

Gas, mcf lease total

Last 12 months 117,629 · prior 12 84,946(+38%)

Chain of custody

Every operator that reported production on this well's lease, in order.

1Pennzoil Exploration & Prod. Co.Jan 1993 → Feb 1999
2Quintana Pet. Corp.Jan 1993 → Nov 2000
3Pennzenergy Exp. & Prod., L.L.C.Mar 1999 → Mar 2000
4Devon Energy Production Co, L.P.Apr 2000 → Jul 2002
5Hilcorp Energy CompanyDec 2000 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
827911-99	Recompletion	Hilcorp Energy Company	Jun 16, 2017	Jun 27, 2017	—	6,200
806879-99	Recompletion	Hilcorp Energy Company	May 26, 2015	May 29, 2015	May 29, 2015	6,200
623145-99	Recompletion	Hilcorp Energy Company	Jul 24, 2006	Aug 1, 2006	Jul 25, 2006	6,200
549868-99	Recompletion	Hilcorp Energy Company	Aug 20, 2004	Aug 24, 2004	—	6,200
529536-99	Recompletion	Hilcorp Energy Company	Mar 13, 2003	Mar 17, 2003	Mar 10, 2003	6,200
289282-99	Drill	Quintana Pet. Corp.	Nov 1, 1985	Nov 4, 1985	Nov 13, 1985	6,200

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-2-2590	—	—	—	—
—	— O-2-2880	—	—	—	—
—	— O-2-5280	—	—	—	—
—	— O-2-5280	—	—	—	—
—	— O-2-8906	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 49 ft elevation.Download CSV →

Formation	MD ft	Subsea
LagartoLARGARTO	1,500	-1,451
Oakville	2,750	-2,701
CatahoulaCATAHOULA (MIOCENE)	3,300	-3,251
Catahoula	3,656	-3,607
AnahuacANAHUAC (MIOCENE)	4,100	-4,051
FrioFRIO-GRETA (OLIGOCENE)	4,365	-4,316
Frio	4,406	-4,357
FrioMIDDLE FRIO (SINTON)	5,000	-4,951
FrioLOWER FRIO (OLIGOCENE)	5,880	-5,831
JacksonJACKSON/YEGUA	—	—
NO Change	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
5,154	5,162	Perforated
5,522	5,537	Perforated
5,768	5,777	Perforated
5,784	5,789	Perforated
5,873	5,877	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
9.625	1,505	13.5	706 S
5.5	5,937	8.75	1,270 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 →

Filed	W-2 / G-1 date	Logs referenced
Jun 30, 2017	Jun 23, 2017	—
Apr 4, 2007	Aug 21, 2006	Yes
Dec 8, 2006	—	—
Nov 8, 2004	Sep 17, 2004	Yes
Sep 23, 2004	—	—
May 19, 2003	Mar 27, 2003	Yes
Apr 17, 2003	—	—
Jan 9, 1986	Dec 27, 1985	Yes
Jan 4, 1986	—	—

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 42-391-31888 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-391-31888 → 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.

Open the cross-section →

Tom O'Connor (5800SD) FLD Unit42-391-30343

0.2 KM · Quintana Pet. Corp. · Section with this well →

Surface Sand Clay	1,500	-1,439
Lagarto	2,750	-2,689
Oakville	3,300	-3,239
Catahoula	3,370	-3,309
Anahuac	4,365	-4,304
4400 Sand	4,376	-4,315
Greta	4,440	-4,379
Frio	4,785	-4,724

9 TOPS · FIRST 8

Tom O'Connor (5800 SD) Fld. Unit42-391-32066

0.4 KM · Quintana Pet. Corp. · Section with this well →

Lagarto	1,500	-1,454
Oakville	2,750	-2,704
Catahoula	3,300	-3,254
Catahoula	3,564	-3,518
Anahuac	4,100	-4,054
Frio	4,362	-4,316
Frio	4,365	-4,319
Frio	5,000	-4,954

10 TOPS · FIRST 8

Tom O'Connor (5800'SD)FIELD Unit42-391-31923

0.4 KM · Quintana Pet. Corp. · Section with this well →

Lagarto	1,500	-1,452
Oakville	2,750	-2,702
Catahoula	3,300	-3,252
Catahoula	3,637	-3,589
Anahuac	4,100	-4,052
Frio	4,362	-4,314
Greta	4,362	-4,314
Frio	4,365	-4,317

11 TOPS · FIRST 8

Tom O'Connor (5800 Sd)field Unit42-391-01375

0.4 KM · Quintana Pet. Corp. · Section with this well →

Lagarto	1,500	-1,450
Oakville	2,750	-2,700
Catahoula	3,300	-3,250
Catahoula	3,300	-3,250
Anahuac	4,100	-4,050
Frio	4,365	-4,315
Frio	4,365	-4,315
Frio	5,000	-4,950

9 TOPS · FIRST 8

Tom O'Connor (5800'SD)FIELD Unit42-391-30315

0.5 KM · Quintana Pet. Corp. · Section with this well →

Lagarto	1,500	-1,447
Oakville	2,750	-2,697
Catahoula	3,300	-3,247
Catahoula	3,300	-3,247
Anahuac	4,100	-4,047
Frio	4,362	-4,309
Frio	4,365	-4,312
Frio	5,000	-4,947

10 TOPS · FIRST 8

Lambert, M.F.42-391-01398

0.6 KM · Hilcorp Energy Company · Section with this well →

Frio	1	58
Surface Sand Clay	1,500	-1,441
Lagarto	2,750	-2,691
Oakville	3,300	-3,241
Catahoula	4,100	-4,041
Anahuac	4,365	-4,306
Frio	4,785	-4,726
Frio	4,785	-4,726

9 TOPS · FIRST 8

Lambert, M.F.42-391-01347

0.6 KM · Hilcorp Energy Company · Section with this well →

Surface Sand Clay	1,500	-1,002
Lagarto	2,750	-2,252
Oakville	2,900	-2,402
Catahoula	3,300	-2,802
Anahuac	4,100	-3,602
Frio	4,265	-3,767
Anahuac	4,365	-3,867
Frio	4,785	-4,287

10 TOPS · FIRST 8

Lambert, M.F.42-391-01349

0.7 KM · Hilcorp Energy Company · Section with this well →

Lagarto	2,750	-2,701
Oakville	2,900	-2,851
Catahoula	3,600	-3,551
Anahuac	4,100	-4,051
Catahoula	4,100	-4,051
Anahuac	4,100	-4,051
Frio	4,265	-4,216
Greta	4,300	-4,251

13 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/39131888, documented in the API reference.