GERSTENBERG "A"

Oil · District 7C · Lease #11686

Operator: SOJOURNER DRILLING CORPORATION

Cum Oil

12k BBL

Cum Gas

26k MCF

casinghead

Wells

2

Production

1993-01 — 2003-02

Peak Month

1993-03

Production History

Cum Oil: 12,492 BBL Cum Gas: 26,422 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

252 BBL/mo

Di (annual)

22.9%

b-factor

0.0

EUR

13,141 BBL

R-squared

0.840

type

exponential

Operator History (from monthly production reports)

2002-07 — 2013-03 SOJOURNER DRILLING CORPORATION 129 mo
2000-04 — 2002-06 QUICKSILVER RESOURCES INC. 27 mo
1993-01 — 2000-03 MSR EXPLORATION, INC. 87 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2SOJOURNER DRILLING CORPORATION14,3501986-01-28
1SOJOURNER DRILLING CORPORATION24,5101985-09-10