中国·永利y23455(股份)有限公司

The High Resolution Acoustic Televiewer (HRAT)® provides a continuous high-resolution oriented ultrasound image of the borehole wall. 

The probe uses a fixed acoustic transducer and a rotating acoustic mirror to scan the borehole walls with a focussed ultrasound beam. The amplitude and travel time of the reflected acoustic signal are recorded as separate image logs. 

Features such as fractures reduce the reflected amplitude and appear as dark sinusoidal traces on the log. The traveltime log is equivalent to a 360-arm caliper and shows diameter changes within open fractures and ‘break-outs’. Directional information is also recorded and used to orient the images in real time. 

GeoCAD® Televiewer Module: is a Windows-based package for processing, interpreting and displaying acoustic and optical televiewer image logs. Standard log presentations include tadpole and stick plots, stereographic projections of poles to planes and azimuth frequency diagrams. The synthetic core display allows convenient comparison of log and field data for orientation of fractured or incomplete core sections.

Applications

• Fracture identification and orientation

• Stratigraphic studies

• Local stress studies (break-out)

• Core orientation

• Cased-hole studies

Operating Conditions 

Borehole Type: Fluid filled 

Recommended Logging Speed: 2.5m/min

For detailed specifications, please contact EPC!