The Optical Televiewer provides continuous logs of oriented, high resolution unwrapped video images of borehole walls. Further processing allows for the computation and
display of standard information on fractures and other geological features.
Unlike the Acoustic Televiewer, the Optical Televiewer can be run in both air filled and (clear) water filled holes. The sonde can be supplied with only a data modem and acquisition software if no other Geovista sondes are required at the time.
Dimensions & Weight: Length: 1.63 m : Diameter: 52 mm max.; Weight: 5 kg
image resolution : 360 to 1440 pixels / circumference ( user definable)
Data rate : 1500 Kbps
Colour resolution: 24 bit RGB
Sensor: 1280x1024 CMOS image sensor
Structural log and Image data format: : Bitmap files
Structural and orientation data format..: ASCII files
360° oriented optical Image
Borehole azimuth and dip
Fluid (clear) and air filled boreholes; Max. Pressure 20 MPa; Max. Temp.: 50ºC
Borehole Diameter Range: 75 to 300 mm , depending on conditions
Typical Logging speed: 2.5m/min with 720 pixels horizontal and 1 mm vertical resolution