CHALK, OTIS /EO/

Oil · District 10 · Lease #2727

Operator: WOOD, MCSHANE & THAMS

Cum Oil

243k BBL

Cum Gas

0 MCF

Wells

10

Production

1993-01 — 2013-03

Peak Month

2001-06

Production History

Cum Oil: 243,332 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

3,613 BBL/mo

Di (annual)

90.8%

b-factor

1.5

EUR

296,350 BBL

R-squared

0.945

type

hyperbolic

Wells (10)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6WOOD, MCSHANE & THAMS34,0012001-03-20
6WWOOD, MCSHANE & THAMS34,0012001-03-20
9PRIZE OPERATING COMPANY13,5002001-03-20
1WVISTA RESOURCES, INC. (A)23,4001998-11-20
7VISTA RESOURCES, INC. (A)23,6001997-08-12
8VISTA RESOURCES, INC. (A)13,4001997-04-03
5WOOD, MCSHANE & THAMS13,1501982-04-06
242-227-01068--------
342-227-01069--------
442-227-01070--------
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