QL-Downhole Studio by QuakeLogic is professional downhole seismic analysis software for P-wave and S-wave borehole testing. It supports SEG-2 data import, automatic first-arrival picking, seismic velocity modeling, and Vs30 calculations. In addition, the software includes S-wave polarization analysis, elastic property calculations, and built-in quality control. Users can also generate branded PDF reports and export results in multiple formats. QL-Downhole Studio runs on Windows and supports secure offline activation and operation.
QL-Downhole Studio by QuakeLogic is professional downhole seismic analysis software for P-wave and S-wave testing. It helps engineers process borehole seismic data, identify wave arrivals, calculate velocity profiles, and prepare technical reports.
The software combines SEG-2 data processing, seismic velocity modeling, Vs30 calculations, and quality control in one platform. In addition, it preserves original field records and tracks every analysis step.
QL-Downhole Studio supports SEG-2 seismic records from borehole surveys. First, the software checks imported files for missing channels, duplicate records, and other data issues.
Users can then review warnings and approve suggested corrections. Moreover, the software keeps original records unchanged throughout the analysis.
It also provides Butterworth filters, notch filters, gain control, and trace balance. As a result, engineers can improve waveform clarity while preserving their raw data.
The downhole seismic analysis software includes automatic first-arrival picking for P-waves and S-waves. Available methods include AIC, STA/LTA, and modified energy ratio.
Each automatic pick receives a confidence score based on signal quality and arrival features. Therefore, users can identify picks that need further review.
In addition, engineers can adjust picks manually or compare arrivals at nearby depths. Manual picks remain protected unless the user chooses to replace them.
QL-Downhole Studio supports opposite-direction S-wave measurements. It compares S+ and S− records to help identify shear-wave arrivals.
The software also provides difference traces, waveform correlation, and polarization analysis. Furthermore, users can apply horizontal component rotation when needed.
These tools help engineers review shear-wave signals and evaluate their consistency across measurement depths.
QL-Downhole Studio provides four methods for velocity analysis. These include layer regression, pseudo-interval velocity, true-interval velocity, and refracted-ray layer stripping.
Users can also choose ordinary least squares or robust Huber regression for layer fitting. In addition, the software suggests layer boundaries from changes in travel-time trends.
The model displays P-wave and S-wave velocity profiles. As a result, engineers can review subsurface layer properties and compare alternative interpretations.
The software calculates Vs30 from measured shear-wave data covering the required depth. It also supports time-averaged velocity calculations for custom depth intervals.
Furthermore, QL-Downhole Studio calculates Poisson’s ratio and elastic properties when suitable data are available. These include shear modulus, Young’s modulus, and bulk modulus.
Users must provide density values or select an estimation method. The software clearly labels estimated values and any results based on extrapolation.
QL-Downhole Studio includes automatic checks for seismic data and model quality. It identifies weak arrivals, timing issues, unusual velocity changes, and poor model fits.
Each finding includes an explanation and a link to the related data. Therefore, users can review possible problems before finalizing their interpretation.
The software also provides an overall quality status. This helps engineers identify results that need additional review.
QL-Downhole Studio creates detailed PDF reports for seismic survey projects. Reports can include survey information, processing methods, velocity profiles, and engineering calculations.
In addition, users can add company branding and select the required report sections. The software also supports A4 and Letter page sizes.
Results can be exported as Excel, CSV, PNG, SVG, and PDF files. Moreover, JSON audit records help document the analysis process.
The software stores raw seismic records, processing settings, picks, and results within one project file. Original records remain protected with SHA-256 checksums.
Users can also create snapshots and compare different analysis scenarios. Furthermore, undo and redo functions help reverse unwanted changes.
Automatic backup and recovery features provide additional protection for project data.
QL-Downhole Studio offers Guided and Expert interface modes. Guided mode provides step-by-step help, while Expert mode offers detailed controls.
The software also includes a user guide, sample project, field guide, and training video. In addition, QuakeLogic provides technical support for software-related questions.
QL-Downhole Studio runs on 64-bit Windows 10 and Windows 11 systems. The recommended system memory is 8 GB RAM.
The software uses a per-computer license with offline activation. Therefore, users can activate and operate the application without an internet connection.
Licenses can also be transferred to another computer through the supported deactivation process.
QL-Downhole Studio combines seismic data processing, arrival picking, velocity modeling, and engineering calculations in one application.
Its quality checks and project history support a clear review process. Furthermore, offline operation makes it suitable for laboratories, engineering offices, and field-based analysis.
Overall, it provides a practical solution for downhole seismic testing, borehole velocity profiling, and geotechnical site investigations.
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