BARKER-LENTZ OIL UNIT NO. 4

Oil · District 06 · Lease #3137

Operator: PETROLEUM PRODUCTION MGMT., INC.

Cum Oil

47k BBL

Cum Gas

101k MCF

casinghead

Wells

2

Production

1993-01 — 2005-09

Peak Month

1994-01

Production History

Cum Oil: 46,593 BBL Cum Gas: 100,971 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

455 BBL/mo

Di (annual)

8.3%

b-factor

0.4

EUR

84,597 BBL

R-squared

0.603

type

hyperbolic

Operator History (from monthly production reports)

1997-12 — 2008-08 GMX RESOURCES INC. 129 mo
1993-01 — 1997-11 PETROLEUM PRODUCTION MGMT., INC. 59 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5GMX RESOURCES INC.27,0002005-11-03
4 T42-203-01900GMX RESOURCES INC.------