SHEFFIELD ESTATE OIL UNIT NO. 1

Oil · District 06 · Lease #12479

Operator: KALOS CORPORATION

Cum Oil

21k BBL

Cum Gas

140k MCF

casinghead

Wells

1

Production

1993-01 — 2006-05

Peak Month

1993-03

Production History

Cum Oil: 21,114 BBL Cum Gas: 139,899 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

275 BBL/mo

Di (annual)

19.6%

b-factor

0.0

EUR

16,757 BBL

R-squared

0.568

type

exponential

Operator History (from monthly production reports)

1993-01 — 2006-08 KALOS CORPORATION 164 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1KALOS CORPORATION27,8001988-08-24