For our updated 2021 .pdf reference see

https://rayfract.com/help/rayfract.pdf

For optimal imaging of two constructed low-velocity zones in model dam see

https://rayfract.com/tutorials/D1P2NO24.pdf

For latest release notes see

https://rayfract.com/help/release_notes.pdf

Our latest tutorial

https://rayfract.com/tutorials/Line14_WDVS.pdf

shows improved lateral resolution in basement using multiscale Conjugate-Gradient WET inversion and Wavelength-Dependent Velocity Smoothing (WDVS; Zelt and Chen 2016).

We use our default 1D-gradient starting model (Fig. 16) and alternatively our pseudo-2D DeltatV starting model (Fig. 10).

For latest release notes see

https://rayfract.com/help/release_notes.pdf

For our updated 2022 brochure see

https://rayfract.com/pub/prospect.pdf

For our new tutorial showing refraction interpretation over a strongly weathered sandstone basement in Australia see

https://rayfract.com/tutorials/3016.pdf

For interpretation of synthetic traveltimes modeled for a faulted and dipping basement regarding off-end shots see

https://rayfract.com/tutorials/NGU_G1.pdf

For latest release notes see

https://rayfract.com/help/release_notes.pdf

For our latest tutorial showing optimal interpretation of NGU synthetic fault zone model G4 see

https://rayfract.com/tutorials/NGU_G4.pdf

For a tutorial showing checkerboard resolution test for our TRA9002 profile see

https://rayfract.com/tutorials/TRA9002_resolution_test.pdf

For our latest release notes see

https://rayfract.com/help/release_notes.pdf

For our latest tutorial showing imaging of dynamic Poisson's ratio using Surfer version 23 see

https://rayfract.com/tutorials/poisson_Surfer23.pdf

For our latest release notes see

https://rayfract.com/help/release_notes.pdf

We now optionally plot your reciprocal traveltime picks on your shot-sorted trace gathers. This allows quality control of first break picks and specified recording geometry.

Also we now allow display of shot-sorted traveltime curves at CMP positions instead of receiver positions.

For our latest tutorial showing successful imaging of a basement step in a dry river valley see

https://rayfract.com/tutorials/Line3.pdf

The imaged basement step has been verified with two boreholes.

For our latest release notes see

https://rayfract.com/help/release_notes.pdf