ION Completes Seismic Data Acquisition in the Marcellus Shale

HOUSTON, Dec. 19, 2011 /PRNewswire/ -- ION Geophysical Corporation (NYSE: IO) today announced that it has successfully acquired 235 square miles of new 3D multi-client seismic data in the Marcellus shale play in central Pennsylvania.  Known as ClearfieldSCAN™, the survey is part of ION's growing library of ResSCANS™ 3D multi-client seismic data programs, managed by ION's GeoVentures™ group.  Acquired using the INOVA FireFly® cableless acquisition system and VectorSeis® digital sensors, the P- and C-wave data is being processed by ION's GX Technology (GXT) group using the most advanced data processing techniques.  GXT will also perform seismic attribute analysis and provide other interpretation deliverables.

The Marcellus shale contains about 84 trillion cubic feet of undiscovered, technically recoverable natural gas and 3.4 billion barrels of undiscovered, technically recoverable natural gas liquids according to an August 2011 assessment by the U.S. Geological Survey (USGS), making it one of most prospective unconventional gas plays in North America. Economic viability in shale plays has traditionally been achieved through two engineering technologies, horizontal drilling and hydraulic fracture stimulation. Lower gas prices, however, are creating an increased interest in the use of seismic data to not only help the drilling engineer "stay in zone" and avoid geo-hazards, but also to help operators prioritize acreage positions and drilling locations, optimize their drainage strategies and well spacing, and better design their stimulation programs.

Ken Williamson, Senior Vice President of ION's GeoVentures group, commented, "With our 2D BasinSPANS™ programs, ION established the industry standard for exploration-focused, basin-scale programs.  ResSCANS have a similar value-creating potential with a development and production reservoir focus, leveraging the technology and expertise across the ION portfolio and from outside specialists.  ClearfieldSCAN exemplifies this approach, addressing the appraisal and development challenges our customers are experiencing in resource plays such as the Marcellus."

ION plans to deliver ClearfieldSCAN data by the end of Q2 2012.

To learn more about ION's ClearfieldSCAN program, visit www.iongeo.com/MarcellusSCAN.

About ION
ION Geophysical Corporation is a leading provider of geophysical technology, services, and solutions for the global oil & gas industry. ION's offerings are designed to allow E&P operators to obtain higher resolution images of the subsurface to reduce the risk of exploration and reservoir development, and to enable seismic contractors to acquire geophysical data safely and efficiently. Additional information about ION is available at www.iongeo.com.

The information included herein contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Actual results may vary fundamentally from those described in these forward-looking statements. All forward-looking statements reflect numerous assumptions and involve a number of risks and uncertainties. These risks and uncertainties include risk factors that are disclosed by ION from time to time in its filings with the Securities and Exchange Commission.

Contacts
ION (Investor relations)
Chief Financial Officer
Greg Heinlein, +1 281.781.1046

ION (Media relations)
Director - Corporate Marketing
Karen Abercrombie, +1 713.366.7281
[email protected]

SOURCE ION Geophysical Corporation

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