GRANTHAM

Oil · District 08 · Lease #35695

Operator: THOMPSON, J. CLEO

Cum Oil

284k BBL

Cum Gas

419k MCF

casinghead

Wells

1

Production

1998-03 — 2026-04

Peak Month

2000-08

Production History

Cum Oil: 283,584 BBL Cum Gas: 418,912 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,845 BBL/mo

Di (annual)

30.5%

b-factor

0.7

EUR

157,405 BBL

R-squared

0.772

type

hyperbolic

Operator History (from monthly production reports)

2017-01 — 2026-07 OZARK EXPLORATION, INC. 115 mo
1998-03 — 2016-12 THOMPSON, J. CLEO 226 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1OZARK EXPLORATION, INC.29,7501998-01-21