WINKLEMAN "B"

Oil · District 10 · Lease #37532

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

12k BBL

Cum Gas

0 MCF

Wells

1

Production

2005-04 — 2026-03

Peak Month

2005-04

Production History

Cum Oil: 11,995 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

231 BBL/mo

Di (annual)

92.4%

b-factor

1.1

EUR

12,949 BBL

R-squared

0.478

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2NORTHSTAR OPERATING COMPANY111,7002004-10-19
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