KEFFER TRUST "1026"

Oil · District 10 · Lease #8286

Operator: MEWBOURNE OIL COMPANY

Cum Oil

46k BBL

Cum Gas

26k MCF

casinghead

Wells

1

Production

2010-11 — 2026-04

Peak Month

2011-01

Production History

Cum Oil: 46,161 BBL Cum Gas: 25,930 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

439 BBL/mo

Di (annual)

11.4%

b-factor

0.0

EUR

46,105 BBL

R-squared

0.443

type

exponential

Operator History (from monthly production reports)

2010-11 — 2026-07 MEWBOURNE OIL COMPANY 189 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMEWBOURNE OIL COMPANY38,5002010-02-22