WINDHAM "A"

Oil · District 08 · Lease #34305

Operator: STEPHENS, AUTRY C.

Cum Oil

140k BBL

Cum Gas

513k MCF

casinghead

Wells

1

Production

1994-10 — 2026-01

Peak Month

1995-04

Production History

Cum Oil: 139,850 BBL Cum Gas: 512,677 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,600 BBL/mo

Di (annual)

22.0%

b-factor

0.4

EUR

133,810 BBL

R-squared

0.811

type

hyperbolic

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
1994-10 — 2000-08 STEPHENS, AUTRY C. 71 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC110,2001994-05-12