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MARSHALL "A"

Oil · District 09 · Lease #21929

Operator: T-N-T ENGINEERING, INC.

Fields: ARCHER COUNTY REGULAR

Cum Oil

212k BBL

Cum Gas

4k MCF

casinghead

Wells

3

Production

1993-01 — 2026-04

Peak Month

2010-11

Production History

Cum Oil: 211,748 BBL Cum Gas: 4,408 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,869 BBL/mo

Di (annual)

36.6%

b-factor

0.4

EUR

97,855 BBL

R-squared

0.977

type

hyperbolic

Operator History (from monthly production reports)

2026-04 — 2026-07 SBG RESOURCES GROUP LLC 4 mo
2019-08 — 2026-03 DAYLIGHT PETROLEUM LLC 80 mo
2016-07 — 2019-07 AVAD OPERATING, LLC 37 mo
1996-09 — 2016-06 T-N-T ENGINEERING, INC. 238 mo
1993-01 — 1996-08 SUNDAY CORPORATION 44 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3A42-009-40429SBG RESOURCES GROUP LLC15,5001991-02-25
242-503-35825SBG RESOURCES GROUP LLC15,3001982-03-05
142-009-36039SBG RESOURCES GROUP LLC15,3001982-02-18