TURNBULL E-F-KOWALIK SA1

Oil · District 02 · Lease #12661

Operator: MARATHON OIL EF LLC

Cum Oil

194k BBL

Cum Gas

700k MCF

casinghead

Wells

1

Production

2023-07 — 2026-04

Peak Month

2023-09

Production History

Cum Oil: 194,271 BBL Cum Gas: 700,115 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

25,359 BBL/mo

Di (annual)

467.5%

b-factor

0.8

EUR

238,393 BBL

R-squared

0.960

type

hyperbolic

Operator History (from monthly production reports)

2023-07 — 2026-07 MARATHON OIL EF LLC 37 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC122,0002023-02-01