BILSKY-BILSKY-CHUMCHAL SA

Oil · District 01 · Lease #20721

Operator: MARATHON OIL EF LLC

Cum Oil

359k BBL

Cum Gas

548k MCF

casinghead

Wells

1

Production

2022-08 — 2026-04

Peak Month

2022-11

Production History

Cum Oil: 359,285 BBL Cum Gas: 548,387 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

29,330 BBL/mo

Di (annual)

197.0%

b-factor

0.6

EUR

418,016 BBL

R-squared

0.902

type

hyperbolic

Operator History (from monthly production reports)

2022-08 — 2026-07 MARATHON OIL EF LLC 48 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC224,0002022-05-19