WILLIAMS

Oil // district 11 // lease#68779

op: CHISHOLM OPERATING, INC.

cum_oil

18k BBL

cum_gas

0 MCF

wells

4

production

2005-05 — 2007-02

peak_month

2005-06

-- production_history

cum_oil: 17,862 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,364 BBL/mo

Di (annual)

166.9%

b-factor

0.0

EUR

17,017 BBL

R-squared

0.803

type

exponential

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4CHISHOLM OPERATING, INC.35,9992014-06-02
3CHISHOLM OPERATING, INC.15,9992005-06-07
2CHISHOLM OPERATING, INC.25,9992005-04-20
2UCHISHOLM OPERATING, INC.25,9992005-04-20
EOF // data source: Texas Railroad Commission // 2026