HEDTKE-H.HENKE-DAVENPORT SA

Oil · District 02 · Lease #12480

Operator: MARATHON OIL EF LLC

Cum Oil

234k BBL

Cum Gas

404k MCF

casinghead

Wells

1

Production

2022-09 — 2026-04

Peak Month

2023-03

Production History

Cum Oil: 234,050 BBL Cum Gas: 403,984 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

30,255 BBL/mo

Di (annual)

284.3%

b-factor

0.6

EUR

303,553 BBL

R-squared

0.906

type

hyperbolic

Operator History (from monthly production reports)

2022-09 — 2026-07 MARATHON OIL EF LLC 47 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC126,0002022-06-30