COOK, ZELDA

Oil · District 8A · Lease #69638

Operator: GREAT WESTERN DRILLING COMPANY

Cum Oil

82k BBL

Cum Gas

5k MCF

casinghead

Wells

3

Production

2010-09 — 2026-04

Peak Month

2010-10

Production History

Cum Oil: 82,138 BBL Cum Gas: 5,146 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

813 BBL/mo

Di (annual)

11.1%

b-factor

0.0

EUR

87,837 BBL

R-squared

0.559

type

exponential

Operator History (from monthly production reports)

2024-11 — 2026-07 BASIN OIL & GAS OPERATING, LLC 21 mo
2010-09 — 2024-10 GREAT WESTERN DRILLING COMPANY 170 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3BASIN OIL & GAS OPERATING, LLC27,4002011-04-12
2BASIN OIL & GAS OPERATING, LLC17,4002010-11-18
1BASIN OIL & GAS OPERATING, LLC17,4002010-08-02