ARMSTRONG, ANNIE "B"

Oil · District 8A · Lease #66157

Operator: EXXON CORP.

Cum Oil

510k BBL

Cum Gas

11k MCF

casinghead

Wells

1

Production

1993-01 — 2009-01

Peak Month

2000-09

Production History

Cum Oil: 510,222 BBL Cum Gas: 11,009 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

8,833 BBL/mo

Di (annual)

34.7%

b-factor

0.0

EUR

305,432 BBL

R-squared

0.856

type

exponential

Operator History (from monthly production reports)

1998-03 — 2010-05 APACHE CORPORATION 147 mo
1993-01 — 1998-02 EXXON CORP. 62 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HILCORP ENERGY COMPANY214,2002010-04-15