GIESE OIL UNIT

Oil · District 03 · Lease #21842

Operator: TANA OIL AND GAS CORPORATION

Cum Oil

214k BBL

Cum Gas

467k MCF

casinghead

Wells

1

Production

1993-01 — 2025-08

Peak Month

1994-01

Production History

Cum Oil: 214,380 BBL Cum Gas: 466,892 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,557 BBL/mo

Di (annual)

51.4%

b-factor

0.4

EUR

210,481 BBL

R-squared

0.882

type

hyperbolic

Operator History (from monthly production reports)

2018-08 — 2025-12 MAGNOLIA OIL & GAS OPERATING LLC 89 mo
2008-09 — 2018-07 ENERVEST OPERATING, L.L.C. 119 mo
1999-09 — 2008-08 EMERALD OPERATING COMPANY, INC. 108 mo
1995-11 — 1999-08 ROSEWOOD RESOURCES, INC. 46 mo
1993-01 — 1995-10 TANA OIL AND GAS CORPORATION 34 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1MAGNOLIA OIL & GAS OPERATING LLC110,0001992-10-29