BLACK STONE '21'

Oil · District 14 · Lease #8813

Operator: MEWBOURNE OIL COMPANY

Cum Oil

184k BBL

Cum Gas

0 MCF

Wells

2

Production

2012-09 — 2026-03

Peak Month

2012-12

Production History

Cum Oil: 184,429 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

6,063 BBL/mo

Di (annual)

565.8%

b-factor

1.3

EUR

125,021 BBL

R-squared

0.495

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HMEWBOURNE OIL COMPANY27,5002012-10-10
1HMEWBOURNE OIL COMPANY17,5002012-05-30
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