Axial borehole televiewer

Details Axial borehole televiewer Axial borehole televiewer

G - Physics

01

S

349/8

G01S 15/89 (2006.01) E21B 47/00 (2006.01) G10K 11/35 (2006.01)

Patent

CA 1281118

ABSTRACT A borehole televiewer scans forwardly to produce images of objects longitudinally ahead of the televiewer. It includes a housing moveable longitudinally within a borehole and an acoustical transducer mounted on the housing. Circuit means cause the transducer to emit a sequence of acoustic pulses into the borehole and to produce signals functionally related to the acoustic pulses reflected back. Scan means scan at least a portion of the acoustic pulses through the area of at least a portion of a transverse section of the borehole. The signals produced by the circuit means are correlated with the corresponding transverse section scan positions of the acoustic pulses. The transducer is orbited around the bottom of the televiewer housing and simultaneously moves radially inwardly and outwardly thereacross to image an entire solid angle across a transverse section of the borehole ahead of the televiewer.

524736

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