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Techlog Acoustics

Supporting a wide range of wireline and LWD sonic tools to enable users to load, view, and quality control sonic data

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Sonic data measurements are vital for well evaluation and interpretation tasks in domains such as geophysics, petrophysics, geomechanics, and drilling. In turn, data quality control and validation are critical for these applications.

The Techlog Acoustics module provides all the functionalities required to load, analyze, and quality control data from all the major service companies for both wireline and logging-while-drilling tools. With the Delta-T and Anisotropy workflows in the Techlog platform, processing of the sonic waveforms produces results you can rely on.

Process datasets in a single platform

Without appropriate software, processing raw sonic data is challenging because of its large size and structural complexity (e.g., multidimensional arrays). The Techlog platform can load waveforms from all the major sonic tools in the industry, enabling you to process datasets in a single platform.

Go beyond basics with Schlumberger sonic data

For Schlumberger sonic tools, the Acoustics Interpretation Suite is available to go beyond the industry basics for sonic analysis. Quantitative formation permeability in conventional or fractured reservoirs, near-wellbore alteration or damage, best-in-class cased hole evaluation, and far-field slownesses in large or extreme borehole conditions are key benefits of this new software technology.

Prepare your sonic data for processing

The workflow starts with the preparation of acquired sonic data for all subsequent processing. This step ensures that all tool-specific preprocessing (e.g., gain normalization, DC-offset filtering, and start-time channels) is conducted and that the depth reference for each tool is honored before starting the quality control of the data.

The Techlog platform provides different ways to display and interact with acoustic data, such as waveforms and slowness time projection, along with other relevant data such as gamma ray, calipers, and wellbore images. Specialized tools for quality control investigation of sonic arrays such as waveform plots, spectrum plots, and dispersion analysis plots are available. The caliper data can also be viewed in borehole section plots to help analyze the borehole shape and the tool eccentricity inside it.

Fully benefit from your sonic data

The Techlog Slowness Time Coherence (STC) module comprehensively extracts formation slownesses from sonic waveforms. The processing can be conducted efficiently with default parameters adapted to each tool and environment when possible. For more challenging sonic data, advanced features are available for receiver disabling, transmitter mode, and interactive parameters in single depth for different formation types. For some Schlumberger tools, dispersive STC can be conducted for dipole data, Stoneley, and leaky P.

The Delta-T wizard provides guided workflows, enabling users to build the full workflow and adapt their parameters interactively depending on their inputs and on the environment that has been logged (e.g., slow or fast formation).

Perform anisotropy analysis from sonic data

Anisotropy analysis from cross-dipole array waveforms can be performed efficiently using Techlog Four-Component Rotation. This module is biased on the generalized four-component rotation (Alford rotation) technique to determine the direction of fast shear slowness. Waveform filtering, time windows selection, and statistical averaging are also incorporated to enhance the processing and guide the users to extract all the QC outputs that go with this analysis.

Features

  • Workflow wizard to guide processing
  • Support for the majority of available sonic tools in the industry
  • Specialized tools for waveform quality control
  • Full integration with other wellbore information available
Explore Techlog Geophysics
  • Acoustics
  • Geophy
Related Products & Services
  • Techlog Wellbore Stability
Ocean Plugins
  • Acoustics Interpretation Suite
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Techlog Acoustics for Wireline and LWD Sonic Data
Techlog Acoustics evaluation of formation type
Evaluation of formation type and associated mechanical properties.
Techlog Acoustics for Wireline and LWD Sonic Data Evaluation of formation type and associated mechanical properties. Techlog Acoustics evaluation of formation type
Techlog Acoustics for Wireline and LWD Sonic Data Interactive quality control of initial waveforms. Techlog Acoustics waveform quality control
Techlog Acoustics for Wireline and LWD Sonic Data Techlog Acoustics screenshot
Acoustics Interpretation Suite for Schlumberger Sonic Data Stoneley fracture analysis Techlog Acoustics
Acoustics Interpretation Suite for Schlumberger Sonic Data Radial profiling for monopole, dipole and Stoneley Techlog Acoustics
Acoustics Interpretation Suite for Schlumberger Sonic Data Stoneley mobility analysis Techlog Acoustics
Overview of Acoustics Processing in the Techlog Platform
sonic wave processing 01:39
Watch highlights of how sonic waveform processing with the unrivaled Delta-T and Anisotropy workflows in the Techlog platform produces highly dependable sonic data. Watch video

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