ORSON -4- A

Oil · District 08 · Lease #22971

Operator: TRINITY OPERATING & PROD., INC.

Cum Oil

55k BBL

Cum Gas

102k MCF

casinghead

Wells

2

Production

1993-01 — 2021-11

Peak Month

1998-10

Production History

Cum Oil: 54,902 BBL Cum Gas: 101,557 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

353 BBL/mo

Di (annual)

7.3%

b-factor

0.0

EUR

56,372 BBL

R-squared

0.524

type

exponential

Operator History (from monthly production reports)

2000-09 — 2024-03 ENDEAVOR ENERGY RESOURCES L.P. 283 mo
1997-07 — 2000-08 STEPHENS, AUTRY C. 38 mo
1996-07 — 1997-06 TRINITY OPERATING & PROD., INC. 12 mo
1993-01 — 1996-06 RITTENHOUSE OIL & GAS CO. 42 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2ENDEAVOR ENERGY RESOURCES L.P.110,0001997-12-10
142-317-31018ENDEAVOR ENERGY RESOURCES L.P.------