TXL -43- A

Oil · District 08 · Lease #31896

Operator: STEPHENS, AUTRY C.

Cum Oil

15k BBL

Cum Gas

29k MCF

casinghead

Wells

1

Production

1993-01 — 2006-10

Peak Month

1993-01

Production History

Cum Oil: 14,884 BBL Cum Gas: 29,156 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

225 BBL/mo

Di (annual)

17.9%

b-factor

0.0

EUR

15,064 BBL

R-squared

0.802

type

exponential

Operator History (from monthly production reports)

2000-09 — 2007-02 ENDEAVOR ENERGY RESOURCES L.P. 78 mo
1997-11 — 2000-08 STEPHENS, AUTRY C. 34 mo
1996-09 — 1997-10 DICKSON PETROLEUM, INC. 14 mo
1993-01 — 1996-08 MARIAH ENERGY CORP. 44 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1ENDEAVOR ENERGY RESOURCES L.P.15,8001988-05-09