NEAL RANCH '77' A UNIT

Oil · District 9 · Lease #18854

Operator: COG OPERATING LLC

Cum Oil

246k BBL

Cum Gas

0 MCF

Wells

1

Production

2015-01 — 2026-03

Peak Month

2015-04

Production History

Cum Oil: 246,212 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

4,476 BBL/mo

Di (annual)

45.8%

b-factor

0.5

EUR

215,616 BBL

R-squared

0.512

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
28HCOG OPERATING LLC115,0002014-06-11
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