ZAVISCH -A-

Oil // district 1 // lease#14506

op: WELHAUSEN OPERATING COMPANY, LP

cum_oil

250k BBL

cum_gas

0 MCF

wells

9

production

2004-01 — 2026-03

peak_month

2007-08

-- production_history

cum_oil: 250,181 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,249 BBL/mo

Di (annual)

14.8%

b-factor

0.0

EUR

182,520 BBL

R-squared

0.323

type

exponential

-- wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
A 14WAPITI OPERATING, LLC111,5002013-09-17
15LAYLINE PETROLEUM I, LLC110,8002013-04-22
11LAYLINE PETROLEUM I, LLC110,8002013-04-15
12LAYLINE PETROLEUM I, LLC110,8002013-01-11
A 10WELHAUSEN OPERATING COMPANY, LP111,0002006-03-29
A 6WELHAUSEN OPERATING COMPANY, LP110,5002006-01-20
A 8WELHAUSEN OPERATING COMPANY, LP110,5002006-01-20
A 9WELHAUSEN OPERATING COMPANY, LP110,5002006-01-20
7WELHAUSEN OPERATING COMPANY, LP110,5002003-12-09
EOF // data source: Texas Railroad Commission // 2026