< leases

SEC 143-1

Oil · District 8A · Lease #65636

Operator: SOJOURNER DRILLING CORPORATION

Fields: MICHELLE KAY (CISCO)

Cum Oil

78k BBL

Cum Gas

14k MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

1993-01

Production History

Cum Oil: 78,047 BBL Cum Gas: 14,359 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

521 BBL/mo

Di (annual)

8.2%

b-factor

0.0

EUR

74,675 BBL

R-squared

0.689

type

exponential

Operator History (from monthly production reports)

2002-04 — 2026-07 SOJOURNER DRILLING CORPORATION 292 mo
1997-01 — 2002-03 MERIT ENERGY COMPANY 63 mo
1994-10 — 1996-12 HIGH ISLAND OIL CORPORATION 27 mo
1993-01 — 1994-09 CCV, INC. 21 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
242-125-30372SOJOURNER DRILLING CORPORATION16,2001987-12-22
142-125-30312SOJOURNER DRILLING CORPORATION16,2001985-12-06