RIGGAN "A"

Oil // district 11 // lease#67109

op: VOSKAMP EXPLORATION, INC.

cum_oil

380k BBL

cum_gas

0 MCF

wells

4

production

1993-06 — 1996-11

peak_month

1994-10

-- production_history

cum_oil: 380,242 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

12,809 BBL/mo

Di (annual)

15.9%

b-factor

0.0

EUR

966,545 BBL

R-squared

0.704

type

exponential

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3VOSKAMP EXPLORATION, INC.15,8501993-11-01
4VOSKAMP EXPLORATION, INC.15,8501993-11-01
2VOSKAMP EXPLORATION, INC.15,8501993-07-01
1VOSKAMP EXPLORATION, INC.15,7001993-04-19
EOF // multi-state drilling data platform // 2026