Mark Identification

THE PETROLEUM WORKBENCH

Serial Number

75874772

Filing Date

Dec 16, 1999

Registration Date

Jun 25, 2002

Trademark by

PARADIGM GEOPHYSICAL CORP.

Classification Information

computer programs consisting of an integrated package of high technology applications for integrating log data analysis, well test analysis, reservoir simulation and production data analysis into a reservoir management software package for use by petroleum engineers and geologists

Electrical and Scientific Apparatus