CHALK, OTIS /EO/

Oil // district 10 // lease#2727

op: 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--------
EOF // data source: Texas Railroad Commission // 2026