SWAIN, W. F. 9

Oil · District 05 · Lease #3598

Operator: UNION OIL COMPANY OF CALIFORNIA

Fields: VAN (RODESSA)

Cum Oil

54k BBL

Cum Gas

271k MCF

casinghead

Wells

2

Production

1997-10 — 2026-04

Peak Month

1998-02

Production History

Cum Oil: 53,767 BBL Cum Gas: 270,576 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,009 BBL/mo

Di (annual)

112.3%

b-factor

0.8

EUR

33,204 BBL

R-squared

0.444

type

hyperbolic

Operator History (from monthly production reports)

2021-01 — 2026-07 BASA RESOURCES, INC. 67 mo
1997-10 — 2020-12 UNION OIL COMPANY OF CALIFORNIA 279 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
13BASA RESOURCES, INC.25,1001997-09-22
13UBASA RESOURCES, INC.25,1001997-09-22