WILLIAMS

Oil // district 11 // lease#68793

op: CHISHOLM OPERATING, INC.

cum_oil

132k BBL

cum_gas

0 MCF

wells

4

production

2005-07 — 2010-11

peak_month

2005-09

-- production_history

cum_oil: 132,440 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

7,827 BBL/mo

Di (annual)

422.0%

b-factor

1.9

EUR

398,865 BBL

R-squared

0.954

type

hyperbolic

-- 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
2LCHISHOLM OPERATING, INC.25,9992005-04-20
EOF // data source: Texas Railroad Commission // 2026