INOVA Geophysical and BGP Execute Successful High Productivity Vibroseis Project in Oman

HOUSTON, April 19, 2011 - INOVA Geophysical Equipment Limited and the Bureau of Geophysical
Prospecting (BGP) announced the completion of a high productivity Vibroseis
3D seismic survey test for Petroleum Development Oman (PDO), an exploration
and production company that accounts for more than 70% of the country's
crude-oil production. BGP leveraged INOVA's portfolio of technologies which
included their ARIES II recording system, Vib Pro source controllers, and
AHV-IV Vibroseis vehicles. The purpose of the field test was to acquire data
to validate the capabilities of INOVA recording technology in acquiring
slip-sweep, Distance Separated Simultaneous Sweep (DS3), Distance Separated
Simultaneous Slip-Sweep (DS4) and Independent Simultaneous Sweep (ISS) data.

During the test, the Aries II - Vib Pro recording - shooting system was
able to successfully record both DS3 and DS4 data with dynamic fleeting. This
was especially important in the rugged terrain in which the test was
completed, as vibrator move-up times varied significantly from vehicle to
vehicle. For this project, production numbers for DS4 reached over 830
vibration points per hour.

As advancements in techniques and equipment continue to emerge, equipment
manufacturers, geophysical service operators and E&P companies have a vested
interest in a continuous improvement in Vibroseis operations. The geophysical
objectives of increased surface sampling with high-channel count acquisition
systems can be met with high productivity cost-effective Vibroseis techniques
such as those used in these tests.

"The result of this project is an illustration of the collaboration
between BGP and INOVA in bridging the gap between productivity and image
quality with innovative engineering and operational excellence. This
milestone is also indicative of our growing competitive advantage in
delivering increased operational efficiencies to our clients, combined with
superior customer support. I would like to thank PDO for their cooperative
efforts in making this project possible," added Glenn Hauer, Senior Vice
President of Product Management for INOVA Geophysical.

INOVA's ARIES II land acquisition system, Vib Pro source controllers and
the AHV-IV vibrator line are designed to maximize return on investment by
reducing equipment related downtime and minimizing the impact of harsh
environmental and operational conditions. They support high channel count,
advanced Vibroseis acquisition for all 2D, 3D, or time-lapse 4D seismic
programs. Learn more about INOVA's land equipment portfolio at
www.inovageo.com/products.

About INOVA Geophysical Equipment Limited

INOVA Geophysical Equipment Limited is a leading provider of land
geophysical technology, including source and source control systems, cabled
and cableless land acquisition systems, and advanced seismic digital sensors.
Managed as an independent company, INOVA is a joint venture owned 51% by BGP
(a wholly owned subsidiary of China National Petroleum Corporation) and 49%
by ION Geophysical Corporation (NYSE: IO). Additional information about INOVA
is available at www.inovageo.com.

About BGP

BGP is one of the world's leading geophysical service companies,
delivering a wide range of technologies, services and equipment to the oil
and gas industry world-wide. We are engaged in seismic data acquisition,
processing, interpretation, GME and multi-client surveys, equipment
manufacturing and software R & D. More information about BGP is available at
www.bgp.com.cn/

    Contacts
    INOVA
    Mr. Fernando Hernandez
    Director of Marketing
    Phone: +1-281-879-3559

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