COOK "12"

Oil · District 8A · Lease #69128

Operator: GREAT WESTERN DRILLING COMPANY

Cum Oil

15k BBL

Cum Gas

20k MCF

casinghead

Wells

2

Production

2007-07 — 2026-04

Peak Month

2007-07

Production History

Cum Oil: 15,400 BBL Cum Gas: 20,317 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

406 BBL/mo

Di (annual)

63.5%

b-factor

0.6

EUR

16,598 BBL

R-squared

0.850

type

hyperbolic

Operator History (from monthly production reports)

2024-11 — 2026-07 BASIN OIL & GAS OPERATING, LLC 21 mo
2007-07 — 2024-10 GREAT WESTERN DRILLING COMPANY 208 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2BASIN OIL & GAS OPERATING, LLC18,0002007-07-17
1BASIN OIL & GAS OPERATING, LLC18,0002007-05-14