HARRIET

Oil · District 03 · Lease #12257

Operator: U. S. OPERATING, INC.

Cum Oil

202k BBL

Cum Gas

1.2M MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

1995-09

Production History

Cum Oil: 202,189 BBL Cum Gas: 1,181,330 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,715 BBL/mo

Di (annual)

49.7%

b-factor

0.4

EUR

184,642 BBL

R-squared

0.510

type

hyperbolic

Operator History (from monthly production reports)

2025-08 — 2026-07 MAGNOLIA OIL & GAS OPERATING LLC 12 mo
1993-01 — 2025-07 U. S. OPERATING, INC. 391 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1MAGNOLIA OIL & GAS OPERATING LLC210,0001995-07-17
1REMAGNOLIA OIL & GAS OPERATING LLC210,0001995-07-17