ESSE-SMITH RANCH UNIT A

Oil · District 01 · Lease #15650

Operator: MARATHON OIL EF LLC

Cum Oil

1.2M BBL

Cum Gas

1.8M MCF

casinghead

Wells

5

Production

2011-06 — 2026-04

Peak Month

2014-05

Production History

Cum Oil: 1,224,604 BBL Cum Gas: 1,806,886 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

46,050 BBL/mo

Di (annual)

89.6%

b-factor

0.4

EUR

1,015,880 BBL

R-squared

0.819

type

hyperbolic

Operator History (from monthly production reports)

2011-11 — 2026-07 MARATHON OIL EF LLC 177 mo
2011-06 — 2011-10 HILCORP ENERGY COMPANY 5 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HMARATHON OIL EF LLC217,5002013-11-22
3HMARATHON OIL EF LLC217,5002013-11-21
4HMARATHON OIL EF LLC217,5002013-11-21
5HMARATHON OIL EF LLC217,5002013-11-21
1HMARATHON OIL EF LLC113,5002011-04-14