CHAPMAN-PFEIL 1H PSA

Oil · District 01 · Lease #19585

Operator: MARATHON OIL EF LLC

Cum Oil

331k BBL

Cum Gas

528k MCF

casinghead

Wells

1

Production

2019-02 — 2026-04

Peak Month

2019-07

Production History

Cum Oil: 331,345 BBL Cum Gas: 527,836 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

24,502 BBL/mo

Di (annual)

244.5%

b-factor

0.6

EUR

284,058 BBL

R-squared

0.833

type

hyperbolic

Operator History (from monthly production reports)

2019-02 — 2026-07 MARATHON OIL EF LLC 90 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC120,0002018-12-31