POST MONTGOMERY LO.CLFK.WF UNIT

Oil // district 11 // lease#69754

op: CHI OPERATING, INC.

cum_oil

1.7M BBL

cum_gas

0 MCF

wells

21

production

2011-12 — 2026-03

peak_month

2012-06

-- production_history

cum_oil: 1,651,338 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

12,294 BBL/mo

Di (annual)

3.6%

b-factor

0.0

EUR

3,407,192 BBL

R-squared

0.549

type

exponential

-- wells (21)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6CHI OPERATING, INC.28,3002012-04-03
101CHI OPERATING, INC.18,3002012-03-07
605CHI OPERATING, INC.18,3002011-11-14
1505CHI OPERATING, INC.18,3002011-04-05
1504CHI OPERATING, INC.18,3002011-03-25
1402CHI OPERATING, INC.18,3002011-02-22
1003CHI OPERATING, INC.18,3002010-09-16
1503CHI OPERATING, INC.18,3002010-07-05
503CHI OPERATING, INC.18,3002010-06-30
1502CHI OPERATING, INC.18,3002009-08-14
502CHI OPERATING, INC.18,3002009-08-05
1002CHI OPERATING, INC.18,2002009-03-26
1501CHI OPERATING, INC.27,8002009-01-27
401CHI OPERATING, INC.18,3002009-01-21
601CHI OPERATING, INC.38,3002008-10-02
603CHI OPERATING, INC.28,3002008-09-12
604CHI OPERATING, INC.28,3002008-09-12
703CHI OPERATING, INC.18,3002008-09-11
602CHI OPERATING, INC.18,0002008-08-06
702HOLLY ENERGY, INC.410,2502007-12-21
701CHI OPERATING, INC.38,3002005-08-16
EOF // data source: Texas Railroad Commission // 2026