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Press release from Business Wire

Schlumberger Launches Breakthrough Marine Seismic Technology

<p class='bwalignc'> <i>New IsoMetrix service delivers the first true 3D wavefield measurement</i> </p>

Tuesday, June 05, 2012

Schlumberger Launches Breakthrough Marine Seismic Technology01:30 EDT Tuesday, June 05, 2012 COPENHAGEN, Denmark (Business Wire) -- Schlumberger today announces the launch of IsoMetrix* marine isometric seismic technology and the IsoMetrix family of marine seismic products. This breakthrough technology outputs isometrically sampled point-receiver data in both crossline and inline directions—capturing the returning wavefield in three dimensions and providing the most accurate images of the subsurface ever recorded. The IsoMetrix system uses calibrated, multisensor MEMS technology that forms part of the new WesternGeco Nessie-6* point-receiver seismic streamer. The sensors measure acoustic pressure as well as vertical and crossline acceleration throughout the frequency range, and these measurements are provided as customer deliverables. “Through an extensive 10-year research and engineering program, we have developed a new category of seismic that not only includes the acquisition technology, but also the algorithms and workflows needed to manage such an unprecedented amount of data,” said Carel Hooykaas, president, WesternGeco. “The step change in imaging is as profound as was the move from X-rays to full 3D scans in the world of medicine.” IsoMetrix technology enables efficient exploration, high-resolution near-surface characterization, well integrity planning and unmatched 4D repeatability. The technology is compatible with other WesternGeco services such as the Coil Shooting* and Dual Coil Shooting* acquisition techniques. Field trials last year proved the technology's high accuracy, achieving a 12:1 crossline reconstruction ratio and producing a 6.25-m data grid from streamers 75 m apart. A new range of applications is now being developed based on IsoMetrix technology to address currently intractable exploration and development challenges while simultaneously improving productivity. For more information, go to www.slb.com/isometrix. About Schlumberger Schlumberger is the world's leading supplier of technology, integrated project management and information solutions to customers working in the oil and gas industry worldwide. Employing more than 113,000 people representing over 140 nationalities and working in approximately 85 countries, Schlumberger provides the industry's widest range of products and services from exploration through production. Schlumberger Limited has principal offices in Paris, Houston and The Hague, and reported revenues of $39.54 billion in 2011. For more information, visit www.slb.com. *Mark of Schlumberger Schlumberger LimitedStephen Whittaker, +33 1 4062 1330Director of Corporate Communicationsswhittaker@slb.comorSchlumbergerSusan Ganz, +1 713 689 7142Media Relations Managersganz1@slb.com