SWAIN, O. L. 11B

Oil · District 05 · Lease #3274

Operator: UNION OIL COMPANY OF CALIFORNIA

Cum Oil

172k BBL

Cum Gas

349k MCF

casinghead

Wells

7

Production

1993-01 — 2026-04

Peak Month

1995-02

Production History

Cum Oil: 172,459 BBL Cum Gas: 348,800 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,896 BBL/mo

Di (annual)

41.3%

b-factor

0.3

EUR

119,113 BBL

R-squared

0.848

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 (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
19BASA RESOURCES, INC.22,8002002-01-22
20BASA RESOURCES, INC.22,9002001-12-13
23BASA RESOURCES, INC.32,9002001-06-12
4BASA RESOURCES, INC.22,9242001-06-12
15BASA RESOURCES, INC.22,3152000-10-20
18BASA RESOURCES, INC.23,0901994-11-15
21BASA RESOURCES, INC.12,9001992-01-07