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HOUSTON–(BUSINESS WIRE)–July 6, 2004–Input/Output Inc.
(NYSE:IO) announced today the signing of an agreement involving the
company’s newest innovation in land seismic imaging, the System Four
Digital-Analog platform. Trace Energy Services, headquartered in
Calgary, has committed to purchase several thousand analog channels of
System Four over a multi-year period. The initial purchase involves
the sale of a System Four central recording platform, 2,500 analog
channels, and associated ground electronics, cables, and geophones.

The latest version of System Four incorporates hybrid
functionality that enables contractors to acquire seismic data using
either analog geophones or digital, full-wave VectorSeis(R) sensors —
in virtually any combination or configuration — even on the same

Jim White, President and CEO of Trace Energy Services, commented
on the purchase, “We bought an all-VectorSeis configuration of System
Four last December as part of I/O’s technology acceleration alliance
with Apache. The productivity enhancements that our field crews
achieved using System Four gave us the confidence to commit to the I/O
platform over an extended period. System Four allowed our crews to
record and deliver seismic data to our customers more efficiently and
allowed us to bid for, win, and execute more jobs in a highly
competitive marketplace.”

White continued, “We believe System Four is a breakthrough
technology. It has performed extremely well in a tough operating
environment and has given us the flexibility to tailor seismic surveys
to the requirements of our clients whose sensor specifications vary
between geophones and VectorSeis from one project to the next. I am
pleased that we are deepening our commitment to I/O and taking this
step to replace our installed base of older, analog-only land
acquisition systems. This agreement helps to extend our position in
North America as the leading seismic contractor using System Four.”

Jim Hollis, Vice President of Land Imaging Systems at I/O, added,
“We are delighted that Trace has captured substantial benefits from
their initial purchase and believes System Four allows the company to
differentiate itself. I/O designed System Four to help seismic
acquisition contractors improve their productivity. It is encouraging
to see Trace prove the merits of our design by capturing real
operational efficiencies in the field. These benefits extend to
Trace’s clients, who get better seismic data more quickly such that
they can make the right decisions about exploration and asset
development. System Four is establishing itself as a platform that can
create a three-way win, for oil & gas companies, for seismic
contractors, and for I/O.”

About I/O

I/O is the world’s leading, technology-only seismic services
provider. The company provides cutting-edge seismic acquisition
equipment, software, and planning and seismic processing services to
the global oil and gas industry. The company’s technologies are
applied in both land and marine environments, in traditional 2D and 3D
surveys, and in rapidly growing areas like time-lapse (4D) reservoir
monitoring and full-wave imaging. I/O has offices in the United
States, Canada, Europe, China, Russia and the Middle East. Additional
information is available at

About Trace Energy Services

Trace Energy Services is a leading international seismic services
contractor that has land acquisition crews deployed throughout North
America. Trace provides the most advanced seismic acquisition
technologies to its customers in order to ensure optimal image
quality, rapid cycle time, maximum operational efficiency, and safe
and environmentally-friendly field operations. Trace is headquartered
in Calgary and maintains offices in Houston, Denver, Midland, and
California. Additional information about Trace Energy Services is
available at

CONTACT: I/O, Houston
Kelly Smith, 281-879-3593
Trace Energy Services
David Smiddy, 403-265-1696

SOURCE: Input/Output Inc.