42-391-30534

Final Completion

O CONNER -D-

REFUGIO County · District 2 · T - C OIL COMPANY · LAKE PASTURE

Permits

Max Depth

4,610 ft

First Permit

1980-06-17

Latest Activity

2006-11-21

Lifespan

26 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1981-07-03

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: T - C OIL COMPANY ≠ Production: T-C OIL COMPANY, LLC (reported 2026-04)

Resolved via: production → T-C OIL COMPANY, LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

W-14 Disposal Cancelled 2006-12-11 UIC #000043934 permitted 1993-08-12

Permitted Volume

3,000 bbl/d

Max Pressure

1,300 psi

Injection Interval

3,416–3,428 ft

Injected (12mo)

—

W-14 Disposal Cancelled 1984-02-21 UIC #000049714 permitted 1980-06-20

Permitted Volume

—

Max Pressure

—

Injection Interval

3,750–3,442 ft

Injected (12mo)

—

Operator History

Chain of Custody

T - C OIL COMPANY 1993-2011→ T-C OIL COMPANY, LLC 2012-2026

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Formation Tops (4) Elevation 58 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
LAGARTO	1 ft	+57 ft
MIOCENE (Miocene (undifferentiated))	2,092 ft	-2,034 ft
CATAHOULA	3,740 ft	-3,682 ft
GRETA	4,425 ft	-4,367 ft

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Perforations (3)

Interval	Type
3,416–3,428 ft	Perforated
4,489–4,495 ft	Perforated
?–3,428 ft	Perforated

Casing (3)

Size	Set Depth	Cement
9.625"	1,515 ft	740 sx
2.375"	3,424 ft	—
5.5"	4,625 ft	932 sx

Permit History (2)

#629295 Recompletion Final Completion

O'CONNOR -D- · 4,550 ft

2006-11-21

Spud 2006-10-23

#84167 Recompletion

O'CONNOR "D" · 4,610 ft

1980-06-17

Spud 1980-06-18

Applications (2)

#629295 A T - C OIL COMPANY

received 2006-11-20

#84167 A T - C OIL COMPANY

received 1980-06-17

Records & Logs

6 completion filings on record · 1 with log images at RRC.

W-2/G-1 2007-10-04

W-2/G-1 2006-12-01 log on file

W-2/G-1 2006-12-28

W-2/G-1 1994-06-30

W-2/G-1 1976-11-29

W-2/G-1 1984-01-12

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in REFUGIO County.

Well Details

Well Number: D 31
Max Depth: 4,610 ft
Drill Type: Vertical
County: REFUGIO
District: 2
Operator: T - C OIL COMPANY
Completed: 1981-07-03

Operator

Name: T - C OIL CO
Location: REFUGIO
P-5 Status: Inactive (filed 2011-11-07)
Cum Oil (all leases): 15,292,994 bbl
Cum Gas (all leases): 112,873,669 mcf
Total Permits: 1,009