SANDERS, JUNE -8-

Oil · District 08 · Lease #34719

Operator: STEPHENS, AUTRY C.

Cum Oil

57k BBL

Cum Gas

332k MCF

casinghead

Wells

1

Production

1995-09 — 2024-04

Peak Month

1995-09

Production History

Cum Oil: 57,189 BBL Cum Gas: 331,797 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

336 BBL/mo

Di (annual)

7.0%

b-factor

0.0

EUR

55,681 BBL

R-squared

0.508

type

exponential

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2000-09 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 292 mo
1995-09 — 2000-08 STEPHENS, AUTRY C. 60 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
8ATLANTIC RICHFIELD CO.19,8301995-08-22