MASTER OF SPARKS

Oil · District 7C · Lease #14580

Operator: QUEEN SAND OPERATING CO.

Cum Oil

22k BBL

Cum Gas

30k MCF

casinghead

Wells

1

Production

1997-04 — 2003-10

Peak Month

1997-05

Production History

Cum Oil: 22,060 BBL Cum Gas: 29,754 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

908 BBL/mo

Di (annual)

46.1%

b-factor

0.0

EUR

23,628 BBL

R-squared

0.851

type

exponential

Operator History (from monthly production reports)

2001-01 — 2003-12 DEVX OPERATING COMPANY 36 mo
1999-07 — 2000-12 QUEEN SAND OPERATING CO. 18 mo
1997-08 — 1999-06 NORTHLAND OPERATING COMPANY 23 mo
1997-04 — 1997-07 COLLINS & WARE, INC. 4 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DEVX OPERATING COMPANY210,0001997-04-11