COOPER -Y-

Oil · District 01 · Lease #10989

Operator: GREAT PLAINS RESOURCES, INC.

Fields: SOMERSET

Cum Oil

901 BBL

Cum Gas

21 MCF

casinghead

Wells

7

Production

1993-01 — 1998-05

Peak Month

1993-05

Production History

Cum Oil: 901 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

34 BBL/mo

Di (annual)

45.5%

b-factor

0.0

EUR

860 BBL

R-squared

0.344

type

exponential

Operator History (from monthly production reports)

1996-06 — 2026-07 GREAT PLAINS RESOURCES, INC. 362 mo
1995-01 — 1996-05 GINCO OPERATING CO. 17 mo
1993-10 — 1994-12 AMINEX USA, INC. 15 mo
1993-01 — 1993-09 CASPEN OPERATING COMPANY 9 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3GREAT PLAINS RESOURCES INC.12,0001985-11-06
6GREAT PLAINS RESOURCES INC.12,0001985-11-05
7GREAT PLAINS RESOURCES INC.12,0001985-11-05
4GREAT PLAINS RESOURCES INC.12,0001985-10-30
5GREAT PLAINS RESOURCES INC.12,0001985-10-30
1EL DORADO OIL & GAS INC.12,0001985-10-25
2GREAT PLAINS RESOURCES INC.12,0001985-10-25