ET AL "6"

Oil // district 11 // lease#69305

op: CHI OPERATING, INC.

cum_oil

131k BBL

cum_gas

0 MCF

wells

4

production

2008-12 — 2012-07

peak_month

2008-12

-- production_history

cum_oil: 131,443 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

5,419 BBL/mo

Di (annual)

37.6%

b-factor

0.8

EUR

432,347 BBL

R-squared

0.791

type

hyperbolic

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1CHI OPERATING, INC.38,3002008-10-02
3CHI OPERATING, INC.28,3002008-09-12
4CHI OPERATING, INC.28,3002008-09-12
2CHI OPERATING, INC.18,0002008-08-06
EOF // data source: Texas Railroad Commission // 2026