SWAIN, W. F. 9

Oil · District 05 · Lease #1191

Operator: UNION OIL COMPANY OF CALIFORNIA

Fields: VAN

Cum Oil

27k BBL

Cum Gas

13k MCF

casinghead

Wells

8

Production

1993-01 — 2026-04

Peak Month

2006-07

Production History

Cum Oil: 27,009 BBL Cum Gas: 12,941 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

292 BBL/mo

Di (annual)

202.5%

b-factor

0.8

EUR

5,771 BBL

R-squared

0.742

type

hyperbolic

Operator History (from monthly production reports)

2021-01 — 2026-07 BASA RESOURCES, INC. 67 mo
1993-01 — 2020-12 UNION OIL COMPANY OF CALIFORNIA 336 mo

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3BASA RESOURCES, INC.12,9372004-08-17
2BASA RESOURCES, INC.12,9492004-05-14
5BASA RESOURCES, INC.12,9582004-05-14
6BASA RESOURCES, INC.12,9612004-05-14
9BASA RESOURCES, INC.12,9322003-09-11
142-467-00709BASA RESOURCES, INC.------
1042-467-00710BASA RESOURCES, INC.------
1142-467-00442BASA RESOURCES, INC.------