STEPHENSON

Oil · District 06 · Lease #12817

Operator: SHELBY OPERATING COMPANY

Cum Oil

48k BBL

Cum Gas

336k MCF

casinghead

Wells

1

Production

1993-01 — 2011-04

Peak Month

2000-03

Production History

Cum Oil: 47,636 BBL Cum Gas: 335,603 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,451 BBL/mo

Di (annual)

755.6%

b-factor

1.0

EUR

13,752 BBL

R-squared

0.590

type

hyperbolic

Operator History (from monthly production reports)

1994-01 — 2026-07 SHELBY OPERATING COMPANY 391 mo
1993-09 — 1993-12 RBD-SHELBY AGENCY 4 mo
1993-01 — 1993-08 SHELBY, MICHAEL H. 8 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4SHELBY OPERATING COMPANY410,0001999-12-13