CHAPMAN

Oil · District 04 · Lease #13173

Operator: VENTEX OPERATING CORP.

Cum Oil

18k BBL

Cum Gas

44k MCF

casinghead

Wells

1

Production

2003-08 — 2006-10

Peak Month

2005-12

Production History

Cum Oil: 17,622 BBL Cum Gas: 44,068 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

828 BBL/mo

Di (annual)

40.4%

b-factor

0.0

EUR

24,537 BBL

R-squared

0.685

type

exponential

Operator History (from monthly production reports)

2003-08 — 2008-03 VENTEX OPERATING CORP. 56 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1045VENTEX OPERATING CORP.212,0002003-02-19