Schlumberger

Wide-Azimuth Marine Acquisition

Overview Library

Illuminating reservoirs with improved seismic acquisition techniques

Enhancing reservoir illumination with traditional marine seismic acquisition has always been challenging. Much of the challenge results from the lack of variation in the azimuths of the recorded seismic raypaths. 

Advanced acquisition techniques, such as multi-azimuth (MAZ), wide-azimuth (WAZ), rich-azimuth (RAZ), and full-azimuth (FAZ) innovations are engineered to address the illumination problems inherent in traditional narrow-azimuth marine seismic. These types of surveys improve signal-to-noise ratio and illumination in complex geology and provide natural attenuation of some multiples. Modeling studies and tests on real data are essential to optimize survey design and improve imaging. 

Technology such as streamer steering, single-sensor recording, large steerable calibrated source arrays—combined with improved shot repeatability, better noise sampling and attenuation, and the capability to record during vessel turns—all contribute to improved imaging.

Campeche multiclient WAZ acquisition enables new insights into offshore Mexico subsurface

The recently completed Campeche WAZ survey illuminates Mexico’s highly prospective and complex deepwater subsurface geology, representing a unique global opportunity. This 3D WAZ broadband acquisition project—covering 71,000 km2 of deepwater Mexico—enables imaging of the subsalt formation, revealing the true potential of Mexico. Visit Campeche Multiclient Surveys page

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WesternGeco

Acquisition Techniques to Enhance Data

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