DBT-20 | 2-3/4” Dual Analog Cement Bond Logging Tool

The Dual Analog Tool (DBT) evaluates the cement bond quality and integrity to both pipe and formation by providing the measurements of the cement bond amplitude (CBL) through near receiver (3-ft crystal ), and variable density log (VDL) through far receiver (5-ft crystal).

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Applications

Evaluation of cement bond quality and integrity
Location of free-pipe and cement-top

Features

Rated for high-temperature and high-pressure environments
Compatible with most surface systems
Runs on all standard wirelines
Combines with two standard pulse tools on the bottom, and with all line-shake CCL on the top
All receivers are built in a slotted housing to provide rigidity, strength, and noise isolation
Electronic design verified for 1 hour operation at 415°F to ensure reliability
Easy to service and maintain
Can be upgraded to Radial Bond Tool (RBT)
Calibration signal replaces near signal when head voltage is equal or less than 90 VDC

Specifications

Tool Operating Voltage 100 to150 VDCTool Length 2.743 m (9 feet)
Tool Operating Current 35 to 40 mA Tool Weight 45.36 Kg (100 Lb)
Tool Time Cycle 2 X 50ms Tool Positioning Centralizers Recommended
Max. Temperature 204°C (400°F) Recommended Logging Speed 9.1 m/min (30 ft/min)
Max. Pressure 172.4 Mpa (25,000 PSI) Borehole Fluids Oil – Fresh Water – Brine
Receivers Near & Far = 2” Omni Measurements Near @3ft, Far @5ft
Transmitter 2” Dia Omni Recommended Max. Casing ID 264 mm (10.75 in)
Tool Diameter – OD 69.85 mm(2-3/4 in) Recommended Min. Casing ID 114 mm(4.5 in)

 

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