SPRENCEL PECK-SALGE RAFTER SA

Oil · District 02 · Lease #12200

Operator: MARATHON OIL EF LLC

Cum Oil

282k BBL

Cum Gas

381k MCF

casinghead

Wells

1

Production

2021-04 — 2026-04

Peak Month

2021-10

Production History

Cum Oil: 282,046 BBL Cum Gas: 380,542 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

21,805 BBL/mo

Di (annual)

519.2%

b-factor

1.4

EUR

554,351 BBL

R-squared

0.904

type

hyperbolic

Operator History (from monthly production reports)

2021-04 — 2026-07 MARATHON OIL EF LLC 64 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC122,0002020-12-16