MARSHALL "A"

Oil · District 13 · Lease #21929

Operator: T-N-T ENGINEERING, INC.

Cum Oil

211k BBL

Cum Gas

0 MCF

Wells

3

Production

1993-01 — 2026-03

Peak Month

2010-11

Production History

Cum Oil: 211,268 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,913 BBL/mo

Di (annual)

37.4%

b-factor

0.4

EUR

98,119 BBL

R-squared

0.980

type

hyperbolic

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3ASUNDAY CORPORATION15,5001991-02-25
2CA-TEX PETROLEUM, INC.15,3001982-03-05
1CA-TEX PETROLEUM, INC.15,3001982-02-18
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