BROWN-DUPNIK B UNIT

Oil · District 02 · Lease #10435

Operator: MARATHON OIL EF LLC

Cum Oil

712k BBL

Cum Gas

1.3M MCF

casinghead

Wells

3

Production

2013-02 — 2026-04

Peak Month

2022-03

Production History

Cum Oil: 712,121 BBL Cum Gas: 1,284,068 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

83,521 BBL/mo

Di (annual)

691.7%

b-factor

0.8

EUR

550,935 BBL

R-squared

0.966

type

hyperbolic

Operator History (from monthly production reports)

2013-02 — 2026-07 MARATHON OIL EF LLC 162 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HMARATHON OIL EF LLC222,0002021-09-21
3HMARATHON OIL EF LLC222,0002021-09-21
1HMARATHON OIL EF LLC118,0002012-12-14