WELL · 42-391-01349 · DISTRICT 2

Tom Oconnor (5800 SD) Fld. Unit #73

Refugio County · Tom Oconnor (5800) field · Vertical

Tom Oconnor (5800 SD) Fld. Unit #73 (API 42-391-01349) is a well in Refugio County operated by Hilcorp Energy Company, completed August 30, 2013.

The RRC has issued one drilling permit, issued June 2, 2023, permitted to 5,882 ft.

Completion filings report 6 formation tops, including Lagarto, Oakville, Catahoula, Anahuac.

Its 2 leases have reported 24.5M barrels of oil and 17.5M mcf of gas since January 1993, last reporting in July 2026. The leases carry 639 wells, so these are lease totals, not this well alone.

It holds an active disposal or injection permit, with 313K barrels injected in the 12 months reported through September 2025; TexNet located 0 M2+ earthquakes within 10 km over the last two years.

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	Hilcorp Energy Company
Production reports	Hilcorp Energy Companythrough Apr 2026
Latest permit	Hilcorp Energy CompanyJun 2, 2023

5,882: total depth, ft
1: permits on file
Jun 2, 2023: last permit issued
Aug 30, 2013: completed
24.5M: cumulative oil, bbl
17.5M: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: Aug 30, 2013
Shut in: —
Plugged: —

Surface location

28.335834, -97.194883

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 2 leases this well is completed on; they carry 639 wells in total, so volumes are shared.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Lambert, M. F. O-2-2115	Tom Oconnor (4400)	Hilcorp Energy Company	45	1.73M	2.54M	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

Oil, barrels lease total

Last 12 months 746,910 · prior 12 620,599(+20%)

Gas, mcf lease total

Last 12 months 120,592 · prior 12 89,262(+35%)

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
890933-99	Recompletion	Hilcorp Energy Company	May 27, 2023	Jun 2, 2023	May 5, 2023	5,882

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-2-2115	—	—	—	—
—	— O-2-5280	—	—	—	—

Formation tops

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

Formation	MD ft	Subsea
LagartoLARGARTO	2,750	-2,701
Oakville	2,900	-2,851
Oakville	3,300	-3,251
Catahoula	3,600	-3,551
Anahuac	4,100	-4,051
AnahuacANAHUAC (MIOCENE)	4,100	-4,051
CatahoulaCATAHOULA (MIOCENE)	4,100	-4,051
Frio	4,265	-4,216
Greta	4,300	-4,251
AnahuacANAHUAC (MIOCENE)	4,365	-4,316
FrioFRIO-GRETA	4,785	-4,736
FrioUPPER FRIO	5,000	-4,951
FrioMIDDLE FRIO (SINTON)	5,400	-5,351
FrioLOWER FRIO	5,800	-5,751
FrioLOWER FRIO (OLIGOCENE)	5,882	-5,833

Perforations

Perforated and open-hole intervals.

From	To	Type
4,395	4,435	Perforated
5,846	5,866	Perforated
—	5,800	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
10.75	790	9.875	350 S
10.75	790	14.5	350 S
5.5	5,882	6.25	325 S
5.5	5,882	9.875	325 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 7, 2024	Aug 10, 2023	—
Jan 28, 2014	Sep 5, 2013	—
Jun 10, 1998	Jan 12, 1998	—
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 42-391-01349 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-391-01349 → 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 →

Lambert, M.F.42-391-01347

0.3 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

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

0.6 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 (5800SD) FLD Unit42-391-30343

0.6 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 Unit42-391-31888

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

Lagarto	1,500	-1,451
Oakville	2,750	-2,701
Catahoula	3,300	-3,251
Catahoula	3,656	-3,607
Anahuac	4,100	-4,051
Frio	4,365	-4,316
Frio	4,406	-4,357
Frio	5,000	-4,951

11 TOPS · FIRST 8

Tom O'Connor (5800 SD) Fld. Unit42-391-32692

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

Lagarto	2,750	-2,698
Oakville	2,900	-2,848
Catahoula	3,600	-3,548
Catahoula	4,100	-4,048
Catahoula	4,100	-4,048
Anahuac	4,100	-4,048
Greta	4,300	-4,248
Anahuac	4,365	-4,313

16 TOPS · FIRST 8

Tom O'Connor (5800 SD) Fld. Unit42-391-01345

0.9 KM · Pennzoil Producing Co. · Section with this well →

Catahoula	3,647	-3,587
Frio	4,370	-4,310
Jackson	—
NO Change	—

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

1.0 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) Fld. Unit42-391-32696

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

Lagarto	2,750	-2,698
Oakville	3,300	-3,248
Catahoula	3,620	-3,568
Cathoula	3,620	-3,568
Catahoula	4,100	-4,048
Anahuac	4,365	-4,313
Frio	4,366	-4,314
Frio	4,785	-4,733

12 TOPS · FIRST 8

Beyond the permit record

RRC UIC permits · H-10 reported volumes

Injection

313K: bbl, last 12 reported months
12.7M: bbl, all reported
Sep 2025: reported through

UIC	Kind	Status	Permitted bbl/d	Max psi	Zone ft
000085216	H-1 Injection	Active	20,000	1,605	4,384–4,458

MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS

Last 12 months 313,417 · prior 12 528,826(-41%)

TexNet catalog via USGS

Seismicity near this well

0: M2+ events within 10 km, last 2 years
—: largest

A proximity count, not an attribution. How to read it →

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/39101349, documented in the API reference.