BALL

Oil // district 8 // lease#5439

op: TANDEM ENERGY CORPORATION

cum_oil

3k BBL

cum_gas

0 MCF

wells

4

production

1993-01 — 2026-03

peak_month

1993-01

-- production_history

cum_oil: 3,054 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

130 BBL/mo

Di (annual)

72.1%

b-factor

0.0

EUR

2,155 BBL

R-squared

0.440

type

exponential

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3TANDEM ENERGY CORPORATION33,9001999-08-30
4NORTH STAR ENERGY, INC.23,9501990-12-07
101NORTH STAR ENERGY, INC.22,5801987-03-09
1 ANORTH STAR ENERGY, INC.24,0001980-02-07
EOF // multi-state drilling data platform // 2026