GRAHAM

Oil · District 13 · Lease #19436

Operator: STAMPER OPERATING CO., INC.

Cum Oil

70k BBL

Cum Gas

0 MCF

Wells

3

Production

1993-01 — 2026-03

Peak Month

2002-07

Production History

Cum Oil: 69,711 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

239 BBL/mo

Di (annual)

5.3%

b-factor

0.0

EUR

50,520 BBL

R-squared

0.519

type

exponential

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SIERRA EXPLORATION CO.25,0001981-11-06
4SIERRA EXPLORATION CO.14,9501979-08-07
2SIERRA EXPLORATION CO.14,8001979-04-18
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