WELL · 42-391-01646 · DISTRICT 2

Tom O'Connor (5800 SD) Fld. Unit #C423

Tom O'Connor (5800 SD) Fld. Unit #C423 (API 42-391-01646) is a permitted well in Refugio County filed by Hilcorp Energy Company; no completion report is on file yet.

The RRC has issued one drilling permit, issued August 14, 2017, permitted to 5,891 ft.

Completion filings report 5 formation tops, including Oakville, Catahoula, Greta, Frio.

Its lease has reported 116K barrels of oil and 317K mcf of gas since January 1993, last reporting in July 2026. The lease carries 29 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	T - C Oil Companythrough Nov 2010
Latest permit	Hilcorp Energy CompanyAug 14, 2017

5,891: total depth, ft
1: permits on file
Aug 14, 2017: last permit issued
—: completed
116K: cumulative oil, bbl
317K: 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

28.314589, -97.210812

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 lease this well is completed on; they carry 29 wells in total, so volumes are shared.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Oconnor, Thomas -E- O-2-1526	Tom Oconnor	T-C Oil Company, LLC	29	116K	317K	Jan 1993 – Jul 2026

No volumes reported on these leases in the last three years.

Chain of custody

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

1Copano CompanyJan 1993 → Mar 1998
2T - C Oil CompanyJun 2005 → Nov 2010

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
829558-99	Recompletion	Hilcorp Energy Company	Aug 4, 2017	Aug 14, 2017	—	5,891

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-2-1526	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 46 ft elevation.Download CSV →

Formation	MD ft	Subsea
Oakville	2,057	-2,011
Catahoula	3,650	-3,604
Greta	4,411	-4,365
Frio	5,020	-4,974
Lagarto	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
—	5,828	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
10.75	1,079	16	600 S
5.5	5,891	9.875	600 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	Dec 12, 2017	Aug 14, 2017	—
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 42-391-01646 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-391-01646 → 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 →

M. F. Lambert "A"42-391-01771

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

Catahoula	3,613	-3,567
Frio	4,432	-4,386
Jackson	—
NO Change	—

Lambert, M.F.42-391-01328

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

Lagarto	1,500	-1,445
Oakville	2,750	-2,695
Catahoula	3,300	-3,245
Catahoula	3,300	-3,245
Anahuac	4,100	-4,045
Jackson	4,265	-4,210
Frio	4,365	-4,310
Frio	5,000	-4,945

11 TOPS · FIRST 8

M. F. Lambert 'A'42-391-33052

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

Surface	1,500	-1,448
Catahoula	2,585	-2,533
Lagarto	2,750	-2,698
Oakville	2,900	-2,848
Anahuac	4,100	-4,048
Greta	4,300	-4,248
Frio	4,430	-4,378
Frio	4,785	-4,733

11 TOPS · FIRST 8

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

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

Lagarto	2,750	-2,698
Oakville	2,900	-2,848
Catahoula	3,600	-3,548
Anahuac	4,100	-4,048
Catahoula	4,100	-4,048
Catahoula	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

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

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

Lambert, M.F.42-391-01347

2.6 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

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

Lagarto	2,750	-2,701
Oakville	2,900	-2,851
Catahoula	3,600	-3,551
Catahoula	4,100	-4,051
Anahuac	4,100	-4,051
Anahuac	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

2.9 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

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/39101646, documented in the API reference.