Radial Bond Tool (RBL)


  • Full circumferential resolution for better channel identification
  • Provides a 360-degree cement map
  • Cement bond quality measurement in slim and conventional wells
  • Operates in casing from 4 in. (101 mm) to 13 3/8 in. (340 mm)
  • Indicates channels and intervals using radial receivers
  • Measures the attenuation of the acoustic energy in the casing to cement interface


  • All receivers are built in a slotted housing to provide strength, rigidity, and noise isolation
  • Robust design suitable for horizontal logging
  • SRO and memory capable
  • Warrior compatible

Radial Bond Tool (RBL)

About This Product

The WOS Radial Bond Log tool provides proven superior responsiveness and reliability even in thin cement sheath conditions. With circumferential cement bond evaluation, the RBL identifies channels in addition to standard cement bond logging. The main application of the Radial Bond Log tool is to assess hydraulic isolation between producing and non-producing zones, a critical factor needed to assess well integrity.

In addition to standard cement bond amplitude (CBL) through near receiver (3-ft) and variable density log (VDL) through far receiver (5-ft), the RBL tool provides a cement map through eight receivers (Radial @2Ft ). Each segment covers a 45° section of the pipe which gives a complete 360° evaluation of bond integrity.

Product Details

General Specs
Maximum Pressure 15,000PSI (102 MP)
Maximum Temperature 350°F (175°C)
Maximum Casing ID 13.375 in. (340 mm)
Minimum Casing ID
4 in. (101 mm)
2-3/4 in (70 mm)
Length 8.6 ft (2.62 m)
Weight 95 lbs (43 kg)
Max. Logging Speed
32.8 ft/min (10 m/min)
Combinable with Pegasus Series Tools
Borehole Conditions
Borehole Fluids Oil, Fresh Water, Brine
Tool Position Centralized
Transmitters Single Transmitter
Receivers Radial = 8 Segments
Measurements Near @ 3ft., Far @ 5ft., Radial @ 2ft.
Wave Sample Rate
Wave Start/Stop
2us for All Waves
2ft Segments, 100-400us
3ft Segments, 100-800us
5ft Segments, 100-1200us
Hardware Features
Voltage 18V to 30V
Current ≤ 120 mA @ 18v
Tool Time Cycle 380 ms
Transducer Type
Output Data
20 KHz Piezoelectric
Waves: 3ft, 5ft, 2ft (8 Segments) Calibration
Waveforms Acceleromete Data Housing