SHIVERS, J. R. 12

Oil · District 05 · Lease #3244

Operator: UNION OIL COMPANY OF CALIFORNIA

Cum Oil

150k BBL

Cum Gas

420k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

1994-06

Production History

Cum Oil: 150,491 BBL Cum Gas: 420,095 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,750 BBL/mo

Di (annual)

79.0%

b-factor

0.4

EUR

118,548 BBL

R-squared

0.923

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 (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12BASA RESOURCES, INC.32,5602022-02-16
11BASA RESOURCES, INC.32,9501994-03-30
13BASA RESOURCES, INC.12,9001991-07-29
9BASA RESOURCES, INC.12,4001988-02-11