COWDEN 40 -B-

Oil · District 10 · Lease #23961

Operator: QUAY VALLEY, INC.

Cum Oil

493k BBL

Cum Gas

0 MCF

Wells

6

Production

1993-01 — 2026-03

Peak Month

2014-08

Production History

Cum Oil: 492,725 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

8,267 BBL/mo

Di (annual)

29.2%

b-factor

0.1

EUR

377,588 BBL

R-squared

0.968

type

hyperbolic

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
8PIONEER NATURAL RES. USA, INC.112,0002013-10-03
7PIONEER NATURAL RES. USA, INC.110,6002007-03-14
5MLC CO., INC.18,9001989-09-13
6MLC CO., INC.18,9001989-09-13
342-329-30385--------
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