DEATLEY-GRIFFIN UNIT

Oil · District 01 · Lease #15660

Operator: MARATHON OIL EF LLC

Cum Oil

172k BBL

Cum Gas

240k MCF

casinghead

Wells

1

Production

2011-10 — 2024-02

Peak Month

2011-11

Production History

Cum Oil: 171,924 BBL Cum Gas: 240,258 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,892 BBL/mo

Di (annual)

137.6%

b-factor

0.8

EUR

163,068 BBL

R-squared

0.458

type

hyperbolic

Operator History (from monthly production reports)

2011-11 — 2026-07 MARATHON OIL EF LLC 177 mo
2011-10 — 2011-10 HILCORP ENERGY COMPANY 1 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC113,5002011-08-29