Importance

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Abstract

First seismic data is collected from a plurality of points on a reflecting feature in the formation by emitting a first seismic signal from a first array of source locations in a deviated portion of a first borehole drilled through a formation and receiving first reflections of the first seismic signal from the reflecting feature by a first array of receiver locations in a deviated portion of a second borehole drilled through the formation. Second seismic data is collected from the plurality of points on the reflecting feature in the formation by emitting a second seismic signal from a second array of source locations in the deviated portion of the first borehole, the second array of source locations being different from the first array of source locations, and receiving second reflections of the second seismic signal from the plurality of points on the reflecting feature by a second array of receiver locations in the deviated portion of the second borehole. The collected first seismic data and the collected second seismic data are analyzed to draw conclusions about the formation. The conclusions about the formation are used to take an action concerning the formation.

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First Claim