CEDAR BRANCH UNIT

Oil · District 06 · Lease #12834

Operator: HEC PETROLEUM, INC.

Cum Oil

264k BBL

Cum Gas

40k MCF

casinghead

Wells

1

Production

1993-01 — 2026-03

Peak Month

1995-04

Production History

Cum Oil: 264,127 BBL Cum Gas: 40,427 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,587 BBL/mo

Di (annual)

13.2%

b-factor

0.5

EUR

221,180 BBL

R-squared

0.606

type

hyperbolic

Operator History (from monthly production reports)

2025-03 — 2026-07 BIG CREEK OPERATING COMPANY LLC 17 mo
2008-01 — 2025-02 CULVER & CAIN PRODUCTION LLC 206 mo
2003-05 — 2007-12 HARMAN OPERATING COMPANY, INC. 56 mo
2002-01 — 2003-04 HEC PETROLEUM, INC. 16 mo
1993-01 — 2001-12 HALLWOOD PETROLEUM, INC. 108 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1BIG CREEK OPERATING COMPANY LLC16,5501990-10-24