Synth

A lightweight synthetic seismogram generator for geophysicists.

Overview

Synth takes a well log (LAS file) and a wavelet as inputs and produces a synthetic seismogram through acoustic impedance and reflectivity computation. It is designed as a fast, standalone alternative to heavy interpretation platforms for well-to-seismic tie workflows.

Workflow

LAS file (Vp + RHOB) → Acoustic Impedance → Reflectivity → Convolution → Synthetic
                                                               ↑
                                                          Wavelet input
                                                    (Ricker, Ormsby, or file)

Features

• Load LAS files and select Vp and density curves
• Built-in wavelets: Ricker (peak frequency) and Ormsby (frequency band)
• Load wavelet from CSV or text file
• Interactive well log and synthetic display side by side
• Export synthetic as CSV

Stack

• GUI: PyQt5 + pyqtgraph
• Plotting: matplotlib
• Well logs: lasio
• Computation: numpy

Installation

pip install -e ".[dev]"

Running

python src/main.py

Development

# Run tests
pytest

# Run a specific test file
pytest src/tests/test_core.py

Project Structure

synth/
├── pyproject.toml
├── README.md
└── src/
    ├── main.py         # Entry point
    ├── core/           # Computation: AI, reflectivity, convolution, wavelets
    ├── gui/            # PyQt5 windows, widgets, dialogs
    └── tests/          # pytest + pytest-qt test suite