HOLZGRAF, ORA "B"

Oil · District 9 · Lease #17145

Operator: COG OPERATING LLC

Cum Oil

390k BBL

Cum Gas

0 MCF

Wells

9

Production

2010-05 — 2026-03

Peak Month

2012-11

Production History

Cum Oil: 390,088 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

4,843 BBL/mo

Di (annual)

61.8%

b-factor

1.6

EUR

525,023 BBL

R-squared

0.657

type

hyperbolic

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5410COG OPERATING LLC112,0002012-02-22
5411COG OPERATING LLC212,0002012-02-22
5408COG OPERATING LLC211,0002010-10-22
5407HENRY PETROLEUM LP210,9002007-10-09
5406HENRY PETROLEUM LP110,8002007-04-02
5405HENRY PETROLEUM LP110,5002004-05-12
5402HENRY PETROLEUM LP210,3002003-10-13
5404HENRY PETROLEUM LP210,7002003-08-05
5401HENRY PETROLEUM LP110,6332003-02-13
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