TURNBULL UNIT E

Oil · District 02 · Lease #10655

Operator: MARATHON OIL EF LLC

Cum Oil

342k BBL

Cum Gas

1.6M MCF

casinghead

Wells

4

Production

2011-11 — 2025-10

Peak Month

2020-03

Production History

Cum Oil: 342,047 BBL Cum Gas: 1,603,641 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

21,825 BBL/mo

Di (annual)

181.0%

b-factor

0.4

EUR

240,368 BBL

R-squared

0.752

type

hyperbolic

Operator History (from monthly production reports)

2012-01 — 2026-07 MARATHON OIL EF LLC 175 mo
2011-11 — 2011-12 LUCAS ENERGY, INC. 2 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC222,0002019-10-22
2HMARATHON OIL EF LLC222,0002019-10-22
3HMARATHON OIL EF LLC222,0002019-10-22
5HMARATHON OIL EF LLC113,5002011-01-05