42-467-30773

SHUT IN

THOMPSON I. W. 401

VAN ZANDT County · District 5 · BASA RESOURCES INC. · VAN (AUSTIN CHALK)

Permits

Max Depth

3,046 ft

First Permit

1989-12-04

Latest Activity

2002-04-15

Lifespan

12 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

1990-01-16

Shut-In

—

Plugged

—

P-5 Org Status: Active

EWA / Permit operator mismatch

Scheduling: BASA RESOURCES INC. ≠ Permit: UNION OIL COMPANY OF CALIFORNIA

Resolved via: production → BASA RESOURCES, INC.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

UNION OIL COMPANY OF CALIFORNIA 1993-2020→ BASA RESOURCES, INC. 2021-2026

Lease Production

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

Formation Tops (6) Elevation 506 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
PECAN GAP	1,120 ft	-614 ft
AUSTIN CHALK	1,680 ft	-1,174 ft
PECAN GAP	1,750 ft	-1,244 ft
WOODBINE	2,100 ft	-1,594 ft
AUSTIN CHALK	2,300 ft	-1,794 ft
WOODBINE	2,930 ft	-2,424 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 (5)

Interval	Type
2,102–2,290 ft	Perforated
2,689–2,694 ft	Perforated
2,783–2,786 ft	Perforated
2,788–2,792 ft	Perforated
2,810–2,824 ft	Perforated

Casing (2)

Size	Set Depth	Cement
10.75"	406 ft	265 sx
7"	3,046 ft	500 sx

Permit History (2)

#519111 Recompletion Final Completion

CENTRAL VAN WOODBINE UNIT · 3,046 ft

2002-04-15

Spud 2002-04-26

#367222 Drill Final Completion

THOMPSON, I. W. 401 · 3,040 ft

1989-12-04

Applications (2)

#519111 A UNION OIL COMPANY OF CALIFORNIA

received 2002-04-15

#367222 A UNION EXPL. PARTNERS, LTD.

received 1989-12-04

Records & Logs

4 completion filings on record · 2 with log images at RRC.

W-2/G-1 2002-05-17 log on file

W-2/G-1 2002-05-24

W-2/G-1 1990-02-08 log on file

W-2/G-1 1990-06-07

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 VAN ZANDT County.

Well Details

Well Number: 4011H
Max Depth: 3,046 ft
Drill Type: Vertical
County: VAN ZANDT
District: 5
Operator: BASA RESOURCES INC.
Completed: 1990-01-16

Operator

Name: BASA RES, INC
Location: DALLAS
P-5 Status: Active (filed 2026-02-12)
Cum Oil (all leases): 79,953,285 bbl
Cum Gas (all leases): 41,318,604 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 471