WELL · 42-391-01347 · DISTRICT 2

Tom Oconnor (5800 SD) Fld. Unit #65

Refugio County · Tom Oconnor (5800) field · Vertical

Tom Oconnor (5800 SD) Fld. Unit #65 (API 42-391-01347) is a well in Refugio County operated by Hilcorp Energy Company, completed May 26, 1998.

The RRC has issued one drilling permit, issued June 2, 2023, permitted to 6,150 ft.

Completion filings report 6 formation tops, including Surface Sand Clay, Lagarto, Oakville, Catahoula.

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 87.6K 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

6,150: total depth, ft
1: permits on file
Jun 2, 2023: last permit issued
May 26, 1998: 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: May 26, 1998
Shut in: —
Plugged: —

Surface location

28.332994, -97.194822

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
890917-99	Recompletion	Hilcorp Energy Company	May 26, 2023	Jun 2, 2023	Apr 28, 2023	6,150

Completions

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

Formation tops

As filed on W-2/G-1. Subsea from 498 ft elevation.Download CSV →

Formation	MD ft	Subsea
Surface Sand Clay	1,500	-1,002
LagartoLARGARTO	2,750	-2,252
Oakville	2,900	-2,402
Catahoula	3,300	-2,802
Oakville	3,300	-2,802
AnahuacANAHUAC (MIOCENE)	4,100	-3,602
Catahoula	4,100	-3,602
Frio	4,265	-3,767
Anahuac	4,365	-3,867
FrioFRIO-GRETA	4,785	-4,287
FrioMIDDLE FRIO	5,400	-4,902
FrioLOWER FRIO	6,150	-5,652

Perforations

Perforated and open-hole intervals.

From	To	Type
4,388	4,424	Perforated
5,840	5,870	Perforated
—	5,800	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
10.75	1,204	13	528 S
7	5,899	9.875	528 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	—
Sep 7, 2000	Jun 1, 2000	Yes
Jan 12, 1984	—	Yes

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 42-391-01347 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-391-01347 → 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.42-391-01349

0.3 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
Anahuac	4,100	-4,051
Catahoula	4,100	-4,051
Frio	4,265	-4,216
Greta	4,300	-4,251

13 TOPS · FIRST 8

Tom O'Connor (5800 SD) FLD Unit42-391-31888

0.6 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. Unit42-391-01345

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

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

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

0.6 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 (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. Unit42-391-32066

0.7 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

0.9 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

1.0 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

Beyond the permit record

RRC UIC permits · H-10 reported volumes

Injection

87.6K: bbl, last 12 reported months
10.5M: bbl, all reported
Sep 2025: reported through

UIC	Kind	Status	Permitted bbl/d	Max psi	Zone ft
000087466	H-1 Injection	Active	20,000	1,605	4,380–4,454

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

Last 12 months 87,591 · prior 12 308,929(-72%)

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/39101347, documented in the API reference.