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OPTICAL TELEVIEWER
Tool design philosophy & applications
The tool generates a continuous oriented 360° image of the
borehole wall using an optical imaging system.(down hole CCD camera
which records the image of the borehole wall in a prism)
The tool includes one orientation device thus allowing accurate
borehole deviation data to be obtained during the same logging
run.
The optical televiewer is fully downhole digital and can be run
on any standard wireline.
The purpose of the optical imaging tool is
to provide detailed, oriented, structural information. Possible
applications are :
• Fracture
detection and evaluation
•
Detection of thin beds
• Determination
of bedding dip
• Lithological
interpretation
OBI40-2G tool specifications (PDF)
diameter
length
weight
Max temp
Max pressure
Borehole diameter |
40mm
1.47m
5.3 kgs
70°c
200 bar
2” to 24” depending on borehole conditions |
Processing optical data
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