BRILLHART '921'

Oil · District 10 · Lease #8998

Operator: MEWBOURNE OIL COMPANY

Cum Oil

70k BBL

Cum Gas

131k MCF

casinghead

Wells

1

Production

2013-10 — 2026-04

Peak Month

2013-11

Production History

Cum Oil: 69,889 BBL Cum Gas: 130,729 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

915 BBL/mo

Di (annual)

17.6%

b-factor

0.0

EUR

62,266 BBL

R-squared

0.334

type

exponential

Operator History (from monthly production reports)

2013-10 — 2026-07 MEWBOURNE OIL COMPANY 154 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMMEWBOURNE OIL COMPANY18,0002013-06-21