DUDENSING UNIT

Oil · District 8A · Lease #68394

Operator: SCHALK OIL COMPANY, INC.

Cum Oil

151k BBL

Cum Gas

11k MCF

casinghead

Wells

1

Production

2002-01 — 2014-11

Peak Month

2002-03

Production History

Cum Oil: 151,268 BBL Cum Gas: 10,977 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,547 BBL/mo

Di (annual)

29.7%

b-factor

0.0

EUR

143,441 BBL

R-squared

0.916

type

exponential

Operator History (from monthly production reports)

2002-01 — 2016-12 SCHALK OIL COMPANY, INC. 180 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SCHALK OIL COMPANY INC.15,2002001-12-13