HARVARD

Oil · District 08 · Lease #35638

Operator: STEPHENS, AUTRY C.

Cum Oil

73k BBL

Cum Gas

127k MCF

casinghead

Wells

1

Production

1998-01 — 2025-02

Peak Month

2020-08

Production History

Cum Oil: 73,128 BBL Cum Gas: 127,431 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

509 BBL/mo

Di (annual)

42.1%

b-factor

0.0

EUR

14,489 BBL

R-squared

0.567

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
1998-01 — 2000-08 STEPHENS, AUTRY C. 32 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC211,2501999-05-26