TEXAS UNIVERSITY -UU-

Oil · District 10 · Lease #36910

Operator: PIEDRA OPERATING, LLC

Cum Oil

45k BBL

Cum Gas

0 MCF

Wells

1

Production

2002-08 — 2026-03

Peak Month

2009-09

Production History

Cum Oil: 44,822 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

293 BBL/mo

Di (annual)

30.1%

b-factor

0.4

EUR

18,398 BBL

R-squared

0.479

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6PHILLIPS PETROLEUM COMPANY111,1401999-12-13
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