YORK, ELLA -102-

Oil · District 05 · Lease #3270

Operator: UNION OIL COMPANY OF CALIFORNIA

Cum Oil

110k BBL

Cum Gas

201k MCF

casinghead

Wells

9

Production

1993-01 — 2013-10

Peak Month

1995-12

Production History

Cum Oil: 109,991 BBL Cum Gas: 201,153 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,244 BBL/mo

Di (annual)

27.7%

b-factor

0.0

EUR

97,123 BBL

R-squared

0.742

type

exponential

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 (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2BASA RESOURCES INC.23,0002023-12-13
2RBASA RESOURCES INC.23,0002023-12-13
18BASA RESOURCES INC.12,5001998-05-06
12BASA RESOURCES INC.12,9521996-01-30
17BASA RESOURCES INC.12,5301996-01-30
14BASA RESOURCES INC.12,7961995-09-29
3BASA RESOURCES INC.13,0101995-07-21
1UNION OIL COMPANY OF CALIFORNIA12,7201988-08-04
15BASA RESOURCES INC.23,1001988-07-07