Borehole Logging Mt. Sopris 2SAA-1000F Modular Full Waveform Sonic Tool (P&S)


2SAA-1000-F – Modular Full Waveform Sonic Tool

2SAA-1000-F Tool Bitmap


The 2SAA-1000-F Modular Full Waveform Sonic tool is used extensively in the groundwater, mining, and geotechnical industries. Sonic logs are widely employed, often in combination with other logs, to provide porosity, permeability, and geo-mechanical properties. This probe is ideal for cased-hole and open-hole applications, such as fracture identification and cement bond logging. Sonic probes must be used in fluid filled holes.

Several features of the 2SAA-1000-F sonic probe set it apart from conventional probes.  The tool is modular, which allows the user to connect various sections together to form the specific tool needed.  It is a variable frequency tool that can be used for surveys in many different environments and can be configured in the monopole or dipole mode of operation.

The receivers can also stack and average multiple waveforms to cancel noise when the received signal amplitude is low. Compressional wave velocity, shear wave velocity, Stoneley wave velocity, and Stoneley wave amplitude can be easily measured in real time in almost any situation. The 2SAA-1000-F is a standalone tool.


  • Cased hole: Cement Bond Logging (CBL)
  • Porosity and permeability evaluation
  • Lithology identification
  • Variation of rock strength
  • Calculation of rock mechanical properties: Elastic moduli, Poisson’s ratio, Shear modulus, Young’s modulus, Bulk modulus and compressibility
  • Identification and hydraulic characterization of fractures

Operating Conditions

Borehole Fluid
[X] Water
[X] Mud
[_] Dry

[X] Uncased
[X] PVC Borehole
[X] Steel

[X] Required
[_] Non-Necessary

Features & Benefits

  • Truly modular tool: Other receiver and transmitter combinations possible
  • Variable frequency tool: Choice from 1 to 40 kHz
  • Includes two sets of centralizers
  • Real time display and processing of full waveforms in LoggerSuite and WellCAD Browser
  • Ability to record long wave train for Stoneley wave analysis, fracture aperture, and permeability index
  • Real time filtering to enhance the detection of the main wave propagation modes
  • User-defined waveform window
  • Real time slowness, amplitude, and VDL plotting

Specifications – Metric/English

Specification Metric Imperial
Diameter 44 mm 1.75″
Length 2.05 m * 80.87″ *
Weight 12 Kg 26 lbs.
Max. Temp. 70ºC 158ºF
Max. Pressure 200 bar 2900 psi


Sample Resolution: 12 bit
Sampling: 2 µs (no stacking), 4 µs – 100 in 4µs increments
Number of Samples per Receiver: 0 to 1024
Sample Holdoff Time: 10 to 2500 µs in 10µs increments
Number of waveforms stacked: 1 to 16
Stack Interval: 1- 250 ms

Receiver Frequency Response: 1- 40 kHz
Receiver Gain: 1, 2, 4, 8, 16, AGC
Receiver Modes: Monopole, Dipole, Reverse Dipole stacking
Number of Receivers: 1-6

Number of Transmitters: 1 or 2
Transmitter frequency Bands: 0.5 to 1.5 kHz, 1 to 3 kHz, 1.5 to 4.5 kHz, 2 to 6 kHz, 2.5 to 7.5 kHz, 3.6 to 10.5 kHz, 5 to 15 kHz, 7.5 to 22.5 kHz, 10 to 30 kHz, 12.5 to 37.5 kHz, and 15 to 45 kHz

WellCAD Sonic Module


2SAA-1000-F WellCAD Sonic Module

2SAA-1000-F WellCAD Sonic Module

WellCAD® Software is an advanced log processing and visualization software recommended for use with all Mount Sopris logging probes. The WellCAD Sonic Module, used in conjunction with the 2SAA-1000-F provides:


  • Easy to use Applications: Reflected tube wave processing for fracture identification and Cement Bond Log (CBL) quality evaluation
  • Velocity analysis based on semblance processing can be used to derive P, S, and Tube wave velocities
  • Mechanical property computation such as porosity, permeability, Poisson’s ratio, and Bulk modulus
  • Processing techniques: Weighted average and frequency filters, interpolation of poor traces, advanced threshold algorithms for dt first arrival pick up
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