UECKERT UNIT

Oil · District 7C · Lease #12139

Operator: SOJOURNER DRILLING CORPORATION

Cum Oil

5k BBL

Cum Gas

10k MCF

casinghead

Wells

1

Production

1993-01 — 2003-02

Peak Month

2000-02

Production History

Cum Oil: 4,680 BBL Cum Gas: 9,714 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

79 BBL/mo

Di (annual)

38.9%

b-factor

1.2

EUR

8,512 BBL

R-squared

0.908

type

hyperbolic

Operator History (from monthly production reports)

2002-07 — 2014-01 SOJOURNER DRILLING CORPORATION 139 mo
2000-04 — 2002-06 QUICKSILVER RESOURCES INC. 27 mo
1993-01 — 2000-03 MSR EXPLORATION, INC. 87 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SOJOURNER DRILLING CORPORATION14,3501986-08-29