CHALK, OTIS /EO/

Oil // district 10 // lease#42211

op: ROVER PETROLEUM OPERATING, LLC

cum_oil

69k BBL

cum_gas

0 MCF

wells

7

production

2011-12 — 2026-03

peak_month

2011-12

-- production_history

cum_oil: 69,141 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

560 BBL/mo

Di (annual)

5.2%

b-factor

0.0

EUR

119,294 BBL

R-squared

0.499

type

exponential

-- wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6WOOD, 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
442-227-01070--------
EOF // data source: Texas Railroad Commission // 2026