GEORGE LONG B

Oil · District 01 · Lease #16177

Operator: MARATHON OIL EF LLC

Cum Oil

240k BBL

Cum Gas

57k MCF

casinghead

Wells

1

Production

2012-09 — 2026-04

Peak Month

2023-11

Production History

Cum Oil: 240,087 BBL Cum Gas: 57,266 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

9,829 BBL/mo

Di (annual)

445.0%

b-factor

1.7

EUR

399,080 BBL

R-squared

0.956

type

hyperbolic

Operator History (from monthly production reports)

2022-09 — 2026-07 ALVARADO 2014 LLC 47 mo
2016-08 — 2022-08 EARTHSTONE OPERATING, LLC 73 mo
2012-09 — 2016-07 MARATHON OIL EF LLC 47 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HALVARADO 2014 LLC216,6002023-08-11