SHAFFER

Oil // district 8 // lease#27521

op: WINDHAM RESOURCES, INC.

cum_oil

55k BBL

cum_gas

0 MCF

wells

3

production

1995-01 — 2026-03

peak_month

1995-12

-- production_history

cum_oil: 55,132 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

544 BBL/mo

Di (annual)

17.5%

b-factor

0.0

EUR

37,183 BBL

R-squared

0.606

type

exponential

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3PRINCIPAL OIL CORP.14,9991995-11-15
2PRINCIPAL OIL CORP.14,9991995-10-31
1PRINCIPAL OIL CORP.14,9991994-11-30
EOF // multi-state drilling data platform // 2026