GERTIE

Oil · District 01 · Lease #13473

Operator: CHESAPEAKE OPERATING, INC.

Cum Oil

67k BBL

Cum Gas

9k MCF

casinghead

Wells

1

Production

1993-01 — 1999-03

Peak Month

1993-05

Production History

Cum Oil: 67,441 BBL Cum Gas: 9,227 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,226 BBL/mo

Di (annual)

52.5%

b-factor

0.2

EUR

63,469 BBL

R-squared

0.373

type

hyperbolic

Operator History (from monthly production reports)

1993-01 — 2000-04 CHESAPEAKE OPERATING, INC. 88 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HCHESAPEAKE OPERATING INC.213,0001991-10-21