Acoustic Televiewer Tool 2009 All Rights Reserved-Century Wireline Services
The Acoustic Televiewer takes an oriented "picture" of the borehole using high-resolution sound waves. This acoustic picture is displayed in both amplitude and travel time. This information is used to detect bedding planes, fractures, and other hole anomalies without the need to have clear fluid filling the boreholes. The televiewer digitizes 256 measurements around the borehole at each high-resolution sample interval (.005 meters/.02 feet). This data is oriented to North and displayed real-time while logging using the Visual Compu-Log software. Analysis includes color adjustment, fracture dip and strike determination, and classification of anomaly. It allows information to be displayed on the graphical screen, plot, and in report format.  Optionally, the tool can be equipped with a natural gamma sensor.
FEATURES 1.   Natural Gamma: Offset: 30.48 cm (12 in.) Scintillation (NG): 0 to 10,00 API, Accuracy +/-5 percent 2. Deviometer: Offset: 175 cm (69 in.) X-Y Inclinometer (XYI): 0 to 90 degrees, Accuracy +/-0.5 degrees Azimuth (AZ): 3-axis magnetometer 0 to 360 degrees, Accuracy +/- 2 degrees 3.   Acoustic Amplitude & Acousitic Travel Time: Offset: 175 cm (69 in.), Accuracy +/- 2.55 mm (0.1 in.)   Outside Diameter 50.8 mm (2 in.) Weight: 14 kg (30 lbs.) Length: 193 cm (76.0 in.) Pressure: 105 kg/cm2 (1500 psi) Temperature: 85 C (185 F) Scan Rate: 12 revolutions/second Sample Rate: 256 samples/revolutions Borehole Size: 74 to 230 mm (2.9 to 9 in.) Logging Speed: 2 m/min (6 ft/min.) Tool Voltage Required: 115 VDC TOOL#: 9804