TOM-SMITH UNIT B

Oil · District 01 · Lease #18809

Operator: MARATHON OIL EF LLC

Cum Oil

1.2M BBL

Cum Gas

1.1M MCF

casinghead

Wells

7

Production

2015-02 — 2026-04

Peak Month

2021-06

Production History

Cum Oil: 1,228,756 BBL Cum Gas: 1,055,110 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

58,293 BBL/mo

Di (annual)

90.9%

b-factor

0.4

EUR

1,268,108 BBL

R-squared

0.676

type

hyperbolic

Operator History (from monthly production reports)

2015-02 — 2026-07 MARATHON OIL EF LLC 138 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC122,0002021-07-02
2HMARATHON OIL EF LLC323,0002020-12-03
3HMARATHON OIL EF LLC323,0002020-12-03
7HMARATHON OIL EF LLC122,0002019-07-19
8HMARATHON OIL EF LLC122,0002019-07-19
5HMARATHON OIL EF LLC118,7002015-01-20
6HMARATHON OIL EF LLC118,7002015-01-20