GIESENSCHLAG"C"AUSTIN CHALK O/U

Oil · District 03 · Lease #21861

Operator: TEXACO E & P INC.

Cum Oil

29k BBL

Cum Gas

603k MCF

casinghead

Wells

1

Production

1993-01 — 2005-09

Peak Month

1993-01

Production History

Cum Oil: 29,474 BBL Cum Gas: 603,397 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,105 BBL/mo

Di (annual)

50.4%

b-factor

0.1

EUR

29,200 BBL

R-squared

0.784

type

hyperbolic

Operator History (from monthly production reports)

1995-03 — 2008-03 APACHE CORPORATION 157 mo
1993-01 — 1995-02 TEXACO E & P INC. 26 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1APACHE CORPORATION39,2502008-02-12