STOECKER "A"

Oil · District 7C · Lease #12231

Operator: SOJOURNER DRILLING CORPORATION

Cum Oil

10k BBL

Cum Gas

61k MCF

casinghead

Wells

1

Production

1993-01 — 2005-09

Peak Month

1993-05

Production History

Cum Oil: 10,438 BBL Cum Gas: 60,542 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

312 BBL/mo

Di (annual)

35.8%

b-factor

0.0

EUR

10,426 BBL

R-squared

0.786

type

exponential

Operator History (from monthly production reports)

2002-07 — 2011-05 SOJOURNER DRILLING CORPORATION 107 mo
2000-04 — 2002-06 QUICKSILVER RESOURCES INC. 27 mo
1993-01 — 2000-03 MSR EXPLORATION, INC. 87 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2SOJOURNER DRILLING CORPORATION24,4001987-05-28