WELL · 42-391-00570 · DISTRICT 2

Tom Oconnor (5800 SD) Fld. Unit #Q348

Tom Oconnor (5800 SD) Fld. Unit #Q348 (API 42-391-00570) is a former disposal or injection well in Refugio County, last operated by Hilcorp Energy Company; its UIC permit is no longer active.

The RRC has issued 3 drilling permits between 2000 and 2024, permitted to 5,925 ft.

Completion filings report 7 formation tops, including Lagarto, Surface Sand Clay, Oakville, Catahoula.

Its 2 leases have reported 24.4M barrels of oil and 16.6M mcf of gas since January 1993, last reporting in July 2026. The leases carry 637 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 18, 2024

5,925: total depth, ft
3: permits on file
Jun 18, 2024: last permit issued
—: completed
24.4M: cumulative oil, bbl
16.6M: 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

28.380091, -97.133426

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

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Heard, Fannie, V. W., Mrs. O-2-2874	Tom Oconnor (5900 Sand)	Hilcorp Energy Company	43	1.63M	1.67M	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 673,200 · prior 12 524,408(+28%)

Gas, mcf lease total

Last 12 months 117,526 · prior 12 83,712(+40%)

Chain of custody

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

1Quintana Pet. Corp.Jan 1993 → Nov 2000
2Hilcorp Energy CompanyDec 2000 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
900503-99	Recompletion	Hilcorp Energy Company	Jun 14, 2024	Jun 18, 2024	—	5,925
683466-99	Recompletion	Hilcorp Energy Company	Jul 24, 2009	Aug 3, 2009	—	5,925
492109-99	Recompletion	Quintana Pet. Corp.	Feb 15, 2000	Feb 17, 2000	May 16, 2000	5,925

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-2-2874	—	—	—	—
—	— O-2-5280	—	—	—	—
—	— O-2-5280	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 51 ft elevation.Download CSV →

Formation	MD ft	Subsea
LagartoLARGARTO	1,500	-1,449
Surface Sand Clay	1,500	-1,449
LagartoLARGARTO	2,750	-2,699
Oakville	2,750	-2,699
CatahoulaCATAHOULA (MIOCENE)	3,300	-3,249
Oakville	3,300	-3,249
AnahuacANAHUAC (MIOCENE)	4,100	-4,049
AnahuacANAHUAC(MIOCENE)	4,100	-4,049
Catahoula	4,100	-4,049
Frio	4,362	-4,311
Anahuac	4,365	-4,314
FrioFRIO-GRETA	4,365	-4,314
FrioFRIO-GRETA (OLIGOCENE)	4,365	-4,314
FrioFRIO-GRETA	4,785	-4,734
FrioMIDDLE FRIO (SINTON)	5,000	-4,949
FrioMIDDLE FRIO	5,400	-5,349
Lower Fri (Oligocene)	5,880	-5,829
FrioLOWER FRIO (OLIGOCENE)	5,880	-5,829
FrioLOWER FRIO	5,925	-5,874
FrioLOWER FRIO 5925	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
5,520	—	Perforated
5,770	5,777	Perforated
5,770	5,794	Perforated
5,801	5,806	Perforated
5,866	5,879	Perforated
5,872	5,879	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
9.625	1,053	16	350 S
5	5,923	8.75	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 →

Filed	W-2 / G-1 date	Logs referenced
Apr 2, 2025	Oct 31, 2024	—
Mar 4, 2025	Oct 8, 2024	—
Feb 26, 2001	Jun 9, 2000	Yes
Aug 22, 2000	Jun 9, 2000	—
Jul 26, 2000	—	—
Jul 11, 1986	Jun 24, 1986	—
Jul 8, 1986	Jun 24, 1986	—
Dec 23, 1985	Oct 30, 1985	—
Dec 10, 1985	Jul 22, 1985	—
Nov 14, 1985	Jul 22, 1985	—
Oct 10, 1985	Jul 22, 1985	—
Jan 12, 1984	Dec 2, 1975	—
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 42-391-00570 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-391-00570 → 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 →

Mrs. Fannie V. W. Heard42-391-00567

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

NO Change

—

Tom O'Connor (5800'SD)FIELD Unit42-391-00690

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
Catahoula	3,564	-3,511
Anahuac	4,100	-4,047
Anahuac	4,100	-4,047
Frio	4,327	-4,274

16 TOPS · FIRST 8

Tom O'CONNOR(5600 Foot Sand)unit42-391-00565

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

Catahoula	3,577	-3,525
Frio	4,339	-4,287
Jackson	—

Tom O'Connor (5800 SD) FLD Unit42-391-00707

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

Lagarto	1,500	-1,448
Oakville	2,750	-2,698
Catahoula	3,300	-3,248
Catahoula	3,300	-3,248
Catahoula	3,601	-3,549
Anahuac	4,100	-4,048
Frio	4,351	-4,299
Frio	4,365	-4,313

14 TOPS · FIRST 8

Tom O'CONNOR(5800 SD) Fld. Unit42-391-00435

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

Surface Sand Clay	1,500	-1,449
Lagarto	1,500	-1,449
Oakville	2,750	-2,699
Catahoula	3,300	-3,249
Catahoula	3,589	-3,538
Anahuac	4,100	-4,049
Frio	4,364	-4,313
Frio	4,365	-4,314

14 TOPS · FIRST 8

Heard, Fannie V. W., Mrs.42-391-00562

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

Catahoula	3,556	-3,526
Frio	4,346	-4,316
Jackson	—

Tom O'CONNOR(5600 Foot Sand)unit42-391-00695

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

Lagarto	1,500	-1,449
Oakville	2,750	-2,699
Catahoula	3,300	-3,249
Catahoula	3,300	-3,249
Catahoula	3,300	-3,249
Catahoula	3,542	-3,491
Anahuac	4,100	-4,049
Anahuac	4,100	-4,049

19 TOPS · FIRST 8

Tom Oconnor (5800 SD) Fld. Unit42-391-00703

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

Lagarto	1,500	-1,447
Oakville	2,750	-2,697
Catahoula	3,300	-3,247
Anahuac	4,100	-4,047
Frio	4,365	-4,312
Frio	4,365	-4,312
Frio	5,000	-4,947
Frio	5,880	-5,827

9 TOPS · FIRST 8

Beyond the permit record

RRC UIC permits · H-10 reported volumes

Injection

296K: bbl, last 12 reported months
3.17M: bbl, all reported
Sep 1999: reported through

UIC	Kind	Status	Permitted bbl/d	Max psi	Zone ft
000054166	H-1 Injection	Not activated	3,500	2,820	5,640–5,770

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

Last 12 months 296,302 · prior 12 303,655(-2%)

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/39100570, documented in the API reference.