COOK -A-, SECTION 81

Oil // district 8 // lease#9183

op: YOUNG, MARSHALL R., OIL CO.

fields: COOK RANCH

cum_oil

55k BBL

cum_gas

0 MCF

wells

5

production

1993-01 — 2026-03

peak_month

1997-03

-- production_history

cum_oil: 55,156 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

196 BBL/mo

Di (annual)

4.4%

b-factor

0.0

EUR

47,801 BBL

R-squared

0.411

type

exponential

-- wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7WSTASNEY, H. R. & SONS, LTD.11,5002005-05-16
13YOUNG, MARSHALL R., OIL COMPANY15,5001985-02-20
12YOUNG, MARSHALL R., OIL COMPANY11,3001984-12-11
842-417-82763--------
942-417-30749--------
EOF // multi-state drilling data platform // 2026