JOHN UNIT

Oil · District 8A · Lease #67871

Operator: PATTERSON PETROLEUM, INC.

Cum Oil

33k BBL

Cum Gas

10k MCF

casinghead

Wells

1

Production

1998-02 — 1999-08

Peak Month

1998-05

Production History

Cum Oil: 33,452 BBL Cum Gas: 9,724 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,599 BBL/mo

Di (annual)

118.2%

b-factor

2.0

EUR

261,724 BBL

R-squared

0.858

type

hyperbolic

Operator History (from monthly production reports)

1998-02 — 1999-09 PATTERSON PETROLEUM, INC. 20 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1CML EXPLORATION, LLC15,1501998-01-08