COLBY, E. H.

Oil · District 3 · Lease #8768

Operator: TEXCAL ENERGY (GP) LLC

Fields: MANVEL (4970)

Cum Oil

914k BBL

Cum Gas

0 MCF

Wells

4

Production

1993-01 — 2026-03

Peak Month

2001-01

Production History

Cum Oil: 913,519 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

4,934 BBL/mo

Di (annual)

9.8%

b-factor

0.1

EUR

655,685 BBL

R-squared

0.550

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
15NORTH CENTRAL OIL CORP.15,2622002-10-11
10NORTH CENTRAL OIL CORP.15,5151998-07-02
17NORTH CENTRAL OIL CORP.16,2001998-04-20
14 U42-039-30460--------
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