Vertical Seismic Profiles
VSP
A seismic survey geometry where the receivers are typically placed inside a borehole with the source points being located on the surface, or in a separate borehole.
Zero-Offset VSP
A VSP where the source is located as close to the wellbore as possible
Offset VSP
A VSP where the source is located as an offset to the wellbore.
Walk-away VSP
A VSP where multiple sources are located at different offsets along a line passing over the wellbore.
Cross-well VSP
A VSP survey where the source points are located in one borehole and the receiver points are located in a second borehole.
Reverse/Inverse VSP
A VSP where the sources are located in the borehole and the receivers are on the surface
Deviated Borehole VSP
A VSP where the receivers are placed in a non-vertical borehole.
Radial VSP
A 3D version of the offset VSP where all sources are placed at a certain offset in a circle around the borehole.
Spoke VSP
A 3D version of the walkaway VSP where sources are placed on multiple lines leading out from the borehole.
Grid VSP
An extension of a standard orthogonal 3D where the sources are placed in parallel lines in a grid above the borehole.
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