BALL

Oil · District 7B · Lease #5439

Operator: TANDEM ENERGY CORPORATION

Cum Oil

3k BBL

Cum Gas

283k MCF

casinghead

Wells

4

Production

1993-01 — 1998-10

Peak Month

1994-03

Production History

Cum Oil: 3,054 BBL Cum Gas: 282,687 MCF

RRC production reported through Apr 2026 · recent months incomplete

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

Operator History (from monthly production reports)

1997-01 — 2026-07 TANDEM ENERGY CORPORATION 355 mo
1993-08 — 1996-12 MERENCO 41 mo
1993-01 — 1993-07 NORTH STAR ENERGY, INC. 7 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3TANDEM ENERGY CORPORATION33,9001999-08-30
4TANDEM ENERGY CORPORATION23,9501990-12-07
101VANZANDT ORVILLE22,5801987-03-09
1 ATANDEM ENERGY CORPORATION24,0001980-02-07