COOK, ZELDA

Oil // district 11 // lease#69638

op: GREAT WESTERN DRILLING COMPANY

cum_oil

81k BBL

cum_gas

0 MCF

wells

3

production

2010-09 — 2026-03

peak_month

2010-10

-- production_history

cum_oil: 81,233 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

832 BBL/mo

Di (annual)

12.4%

b-factor

0.1

EUR

88,011 BBL

R-squared

0.565

type

hyperbolic

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3GREAT WESTERN DRILLING COMPANY27,4002011-04-12
2GREAT WESTERN DRILLING COMPANY17,4002010-11-18
1GREAT WESTERN DRILLING COMPANY17,4002010-08-02
EOF // data source: Texas Railroad Commission // 2026