Title :
Three-dimensional seismic endoscopy. I. Design of apparatus and basic imaging algorithms
Author :
Valero, Henri-Pierre ; Saracco, Ginette ; Gibert, Dominique
Author_Institution :
IPG, Paris, France
fDate :
10/1/2001 12:00:00 AM
Abstract :
A method, called "seismic endoscopy," able to perform three-dimensional (3-D) acoustical imaging in a cylindrical volume around shallow-depth boreholes is described. The main characteristics of borehole tools designed and constructed in the authors\´ laboratory are presented. Several tests performed in an acoustical water tank are used to illustrate the basic imaging algorithms adapted to the particular acquisition geometry of the probes. In particular, both the filtering of borehole waves and azimuthal refocusing are discussed
Keywords :
geophysical equipment; geophysical prospecting; geophysical signal processing; geophysical techniques; seismology; 3D imaging; AMO; acoustical imaging; acquisition geometry; apparatus; azimuthal moveout; borehole waves; controlled source method; cylindrical volume; geophysical measurement technique; imaging algorithm; instrument; probe; seismic endoscopy; seismic imaging; seismology; shallow-depth boreholes; three dimensional method; tool; vertical seismic profile; wavelet transform; Acoustic imaging; Algorithm design and analysis; Area measurement; Continuous wavelet transforms; Frequency; Geometry; Geophysical measurements; Performance evaluation; Probes; Seismic measurements;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
