42-467-30846

PRODUCING

SWAIN O. L. 11 B

VAN ZANDT County · District 5 · BASA RESOURCES INC. · VAN (PECAN GAP)

Permits

Max Depth

2,900 ft

First Permit

1991-11-12

Latest Activity

2001-12-13

Lifespan

10 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

2001-12-20

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 1993-2015→ BASA RESOURCES, INC. 2022-2026

Lease Production

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

Formation Tops (5) Elevation 459 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
NACATOCH	1,150 ft	-691 ft
PECAN GAP	1,686 ft	-1,227 ft
PECAN GAP	1,815 ft	-1,356 ft
AUSTIN CHALK	2,066 ft	-1,607 ft
AUSTIN CHALK	2,400 ft	-1,941 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 (4)

Interval	Type
1,767–1,779 ft	Perforated
1,784–1,796 ft	Perforated
1,800–1,809 ft	Perforated
2,066–2,250 ft	Perforated

Casing (2)

Size	Set Depth	Cement
7.625"	465 ft	171 sx
4.5"	2,351 ft	250 sx

Permit History (2)

#516104 Recompletion Final Completion

SWAIN, O. L. 11B · 2,900 ft

2001-12-13

Spud 2001-12-13

#393708 Drill Final Completion

SWAIN, O. L. 11B · 2,800 ft

1991-11-12

Spud 1991-11-19

Applications (2)

#516104 A UNION OIL COMPANY OF CALIFORNIA

received 2001-12-13

#393708 A UNOCAL EXPLORATION CORPORATION

received 1991-11-06

Records & Logs

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

W-2/G-1 2002-01-03 log on file

W-2/G-1 2002-01-15

W-2/G-1 1992-01-08 log on file

W-2/G-1 1992-03-17

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: 20
Max Depth: 2,900 ft
Drill Type: Vertical
County: VAN ZANDT
District: 5
Operator: BASA RESOURCES INC.
Completed: 2001-12-20

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