MASSEY BALDWIN

Oil · District 02 · Lease #10630

Operator: MARATHON OIL EF LLC

Cum Oil

586k BBL

Cum Gas

1.4M MCF

casinghead

Wells

3

Production

2013-08 — 2025-11

Peak Month

2013-09

Production History

Cum Oil: 585,924 BBL Cum Gas: 1,415,969 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

27,666 BBL/mo

Di (annual)

113.0%

b-factor

0.5

EUR

567,529 BBL

R-squared

0.799

type

hyperbolic

Operator History (from monthly production reports)

2013-08 — 2026-07 MARATHON OIL EF LLC 156 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HMARATHON OIL EF LLC116,7002013-04-11
1HMARATHON OIL EF LLC116,7002013-04-02
3HMARATHON OIL EF LLC116,7002013-04-02