SHAFFER

Oil · District 8 · Lease #27521

Operator: 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
Live © 2026 Petrora