Mark Identification

PERF-O-LOG

Serial Number

78136296

Filing Date

Jun 17, 2002

Registration Date

Jan 20, 2004

Trademark by

SMITH INTERNATIONAL INC.

Classification Information

Electrical wireline services and repair services for the oil and gas industry; perforating, pipe recovery, and mechanical contractor services for the oil and gas industry; through-tubing remedial services and gravel-pack placement operations for the oil and gas industry; and rental of well completion and workover equipment for the oil and gas industry

Building Construction and Repair

Electrical wireline services for the oil and gas industry, namely production surveys, cased-hole logging, perforating and reservoir evaluation analysis for the oil and gas industry

Computer and Scientific