STATE RUBY GRACE

Oil · District 10 · Lease #40592

Operator: OXY USA INC.

Cum Oil

353k BBL

Cum Gas

0 MCF

Wells

13

Production

2010-10 — 2015-01

Peak Month

2013-05

Production History

Cum Oil: 352,779 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

17,912 BBL/mo

Di (annual)

157.6%

b-factor

0.3

EUR

194,860 BBL

R-squared

0.884

type

hyperbolic

Wells (13)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
16OXY USA INC.111,5012013-01-30
10OXY USA INC.111,4502012-06-18
11OXY USA INC.112,2002012-06-18
6OXY USA INC.111,4502012-06-18
13OXY USA INC.112,2002012-04-19
9OXY USA INC.112,2002012-01-13
8OXY USA INC.112,2002012-01-12
7OXY USA INC.112,2002012-01-03
5OXY USA INC.112,2002011-11-15
3EXL PETROLEUM, LP111,5002011-01-20
4OXY USA INC.211,5002011-01-20
2EXL PETROLEUM, LP111,5002010-12-17
1AEXL PETROLEUM, LP111,5002010-09-16
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