CHAPMAN

Oil · District 04 · Lease #12700

Operator: GEISER OPERATING, INC.

Cum Oil

277k BBL

Cum Gas

198k MCF

casinghead

Wells

2

Production

1997-09 — 2019-05

Peak Month

1998-01

Production History

Cum Oil: 277,257 BBL Cum Gas: 197,835 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,822 BBL/mo

Di (annual)

30.4%

b-factor

0.2

EUR

237,313 BBL

R-squared

0.843

type

hyperbolic

Operator History (from monthly production reports)

2005-11 — 2019-09 GEISER OPERATING, INC. 167 mo
1997-09 — 2005-10 GEISER, D. ALLEN 98 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
435GEISER OPERATING INC.17,2501997-09-12
434GEISER OPERATING INC.16,6501997-08-15