ZAVISCH

Oil // district 1 // lease#12066

op: WELHAUSEN OPERATING COMPANY, LP

cum_oil

359k BBL

cum_gas

0 MCF

wells

11

production

1993-01 — 2026-03

peak_month

2013-03

-- production_history

cum_oil: 359,380 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,719 BBL/mo

Di (annual)

512.7%

b-factor

1.7

EUR

102,117 BBL

R-squared

0.591

type

hyperbolic

-- wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
17LAYLINE PETROLEUM I, LLC110,8002013-01-15
16LAYLINE PETROLEUM I, LLC110,8002012-04-13
15LAYLINE PETROLEUM I, LLC110,8002012-03-28
14WELHAUSEN OPERATING COMPANY, LP112,0002008-04-10
12WELHAUSEN OPERATING COMPANY, LP112,0002008-04-01
6SUNDANCE RESOURCES, INC.110,4001991-05-20
5SUNDANCE RESOURCES, INC.110,4001991-04-04
4SUNDANCE RESOURCES, INC.110,3001990-12-03
3SUNDANCE RESOURCES, INC.110,3001990-06-07
2SUNSET ENERGY OF TEXAS, INC.110,5001988-08-03
1SUNSET ENERGY OF TEXAS, INC.110,2001988-04-21
EOF // data source: Texas Railroad Commission // 2026