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Full Azimuth Sub Salt Imaging with a Coil Shooting Geometry
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, EAGE Subsalt Imaging Workshop Cairo 2009, Nov 2009, cp-145-00008
- ISBN: 978-90-73781-73-3
Abstract
The challenges associated with sub-salt imaging are well known and well documented within the industry, and the recent successes of imaging beneath salt in the Gulf of Mexico might encourage the optimist to believe that the industry has solutions to all of these problems. These imaging successes have established azimuth-rich towed-streamer acquisition as the method of choice for exploration in the Gulf of Mexico. The azimuth-rich data acquired to date has delivered better illumination, imaging, a higher signal-to-noise ratio, and improved seismic resolution. However, the azimuth-rich towed-streamer acquisition configurations used in the Gulf of Mexico are all multi-vessel, and as such have a limited azimuth range, and very often a compromised near trace offset. The sub-salt imaging challenges can be broken into three major categories, illumination, multiples and imaging, the subject of this paper is to illustrate how a single-vessel azimuth-rich acquisition technique can help all three categories of sub-salt imaging challenges, and has positive advantages over the multi-vessel techniques used in the Gulf of Mexico.