SCHROEDER-CHAPMAN UNIT

Oil · District 01 · Lease #15555

Operator: MARATHON OIL EF LLC

Cum Oil

795k BBL

Cum Gas

1.3M MCF

casinghead

Wells

5

Production

2011-07 — 2026-04

Peak Month

2022-07

Production History

Cum Oil: 795,370 BBL Cum Gas: 1,297,822 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

35,201 BBL/mo

Di (annual)

209.5%

b-factor

0.5

EUR

396,169 BBL

R-squared

0.911

type

hyperbolic

Operator History (from monthly production reports)

2011-11 — 2026-07 MARATHON OIL EF LLC 177 mo
2011-07 — 2011-10 HILCORP ENERGY COMPANY 4 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HMARATHON OIL EF LLC123,0002021-04-30
5HMARATHON OIL EF LLC123,0002021-04-30
3HMARATHON OIL EF LLC115,0002012-06-06
2HMARATHON OIL EF LLC114,5002012-05-25
1HMARATHON OIL EF LLC113,5002011-05-19