Schlumberger and Wireless Matrix Complete Licensing Agreement; System Optimizes Well Production and Operations by Delivering Real-Time Data.

Business/Energy Editors & High-Tech Writers

CALGARY, Alberta & NEW YORK--(BUSINESS WIRE)--May 1, 2002

Schlumberger and Wireless Matrix Corporation ("Wireless Matrix") announced today that they have signed a five-year, global master purchase and licensing agreement for select components of Wireless Matrix's Remote Data Management, a telemetry services product, and Wide Area Wireless technology.

Wireless Matrix's Wide Area Wireless technology, which includes its Processor Assisted Connector (PAC) and Field Data Exec, will complement the Schlumberger DeXa.Ne(a) secure global connectivity services to transfer production and operation data from producing wells to authorized personnel through the Schlumberger InterACT(a) wellsite monitoring and control system. The combination of Wireless Matrix technologies with the Schlumberger DeXa.Net and InterACT results in well site production optimization.

"Production optimization is a strategic and significant service offering for Schlumberger and is dependent upon the availability of real-time data from locations that are usually remote," said Xavier Flinois, president of Schlumberger Network and Infrastructure Solutions. "In particular, Wireless Matrix's technology will allow improvement on current SCADA (Supervisory Control And Data Acquisition) system effectiveness by enhancing communication flexibility and robustness."

"The combination of InterACT and components of our Remote Data Management solution establishes a significant new service offering for remote asset management," said John Herring, president and CEO of Wireless Matrix. "The teaming of Wireless Matrix and Schlumberger through this agreement provides both companies with enhanced opportunities to provide best-in-class service and products for our oil and gas clients."

The Schlumberger InterACT system provides users secure, real-time two-way communications and access to oilfield data at all stages of the exploration and production cycle. Authorized personnel can exchange files of standard data types and formats, including drilling reports, wireline and logging-while drilling logs, well stimulation data, and surface and subsurface production data. Update options allow data to be refreshed at predetermined intervals; and data can be viewed in real-time for time-critical operations. DeXa.Net is part of the Schlumberger DeXa Suite of Services and provides broadband fiber and satellite-based connectivity services for delivering real-time data anywhere in the world.

About Wireless Matrix

Wireless Matrix is a leading developer and provider of enterprise-class wireless data services for business-critical operations involving mobile workforces and remote assets. Wireless Matrix mobile and telemetry services are deployed in major corporate industrial markets including oil and gas, utilities, transportation and field service. The Company operates a multi-network wireless gateway service that interfaces to proprietary hosted or third party applications to provide end-to-end wireless information services to key enterprise markets. Its products include specially designed multi-mode mobile and telemetry modems that uniquely satisfy its target market demands. Wireless Matrix is headquartered in Calgary, Alberta, and has offices in Reston, Va., and Burnaby, British Columbia.

About Schlumberger

Schlumberger (NYSE:SLB) is a global technology services company consisting of two business segments, Schlumberger Oilfield Services and SchlumbergerSema. Schlumberger Oilfield Services supplies technology services and solutions to the international petroleum industry. SchlumbergerSema provides IT consulting, systems integration, managed services and related products to the telecommunications, energy and utilities, finance, transport and public sector markets. Schlumberger Network and Infrastructure Solutions supports the two business segments of Schlumberger with the DeXa Suite of Services providing IP network connectivity, information security solutions, distributed computing support services and data centers. For more information www.slb.com.

This release is for information purposes only and does not constitute and should not be construed in any way as an offer to sell or a solicitation of an offer to purchase any of the securities of any of the companies mentioned herein. Wireless Matrix cautions investors that any forward-looking statements made are not guarantees of future performance and that actual results may differ materially from those in the forward-looking statements. IP Anywhere is a registered trademark of Wireless Matrix Corporation; all other trade names and trademarks used herein are the property of their respective owners.

The Toronto Stock Exchange has neither approved nor disapproved the contents hereof.

(a) Mark of Schlumberger

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