CHACHALACA UNIT

Oil · District 1 · Lease #18418

Operator: PILLAR EFS, LLC

Cum Oil

194k BBL

Cum Gas

0 MCF

Wells

1

Production

2015-05 — 2026-03

Peak Month

2015-07

Production History

Cum Oil: 193,829 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

2,864 BBL/mo

Di (annual)

20.6%

b-factor

0.0

EUR

167,054 BBL

R-squared

0.445

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HEOG RESOURCES, INC.110,2002014-08-20
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