UNIVERSITY -25-

Oil · District 08 · Lease #35989

Operator: CHAPARRAL ENERGY, L.L.C.

Cum Oil

107 BBL

Cum Gas

3k MCF

casinghead

Wells

1

Production

1999-05 — 2006-04

Peak Month

2003-06

Production History

Cum Oil: 107 BBL Cum Gas: 2,640 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6 BBL/mo

Di (annual)

86.7%

b-factor

0.0

EUR

72 BBL

R-squared

0.536

type

exponential

Operator History (from monthly production reports)

2003-11 — 2009-06 CHAPARRAL ENERGY, L.L.C. 68 mo
1999-05 — 2003-10 BRECK OPERATING CORP. 54 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4BOAZ ENERGY II OPERATING, LLC311,4001999-01-22