Rock physics experts | seismic inversion | Ikon Science

Seismic inversion

Inversion of the seismic data means extracting layer properties from reflectivity, which involves removing the effect of the seismic wavelet from the data, as well as calculating seismic layer properties (e.g. impedances, Vp/Vs ratio, density) from the interface reflections which depend on contrast.

The best output is often obtained using algorithms that take geology and rock physics into account, such as Ikon’s Ji-Fi (Joint Impedance and Facies Inversion). 

Besides the reduction of interference effects due to the limited seismic bandwidth, the major advantage of seismic inversion is that it provides a common platform for communication because reservoir engineers and geologists work in a layered configurations as well.



Image shows a very good correlation between inversion predicted and well litho-facies. Strong gas-sand indication at recent Pyxis-1 location below K horizon. Highlighted by ellipse is another strong gas indication between Pluto-4 and Pyxis-1 at about the same depth as Urania-1 gas interval


RokDoc Ji-Fi

RokDoc Ji-Fi
Joint Impedance and Facies Inversion. Bayesian simultaneous inversion which jointly solves for impedances and facies.
Simultaneous inversion
Simultaneous AVO inversion that takes angle domain PP seismic data, low frequency background models and wavelets and inverts for absolute elastic properties Vp, Vs and Rhob.
PPPS inversion
Simultaneous AVO inversion that takes angle domain PP and PS seismic data, low frequency background models and wavelets and jointly inverts for absolute elastic properties Vp, Vs and Rhob.
Coloured inversion
Post-stack spectral shaping tool that takes seismic reflectivity data and ‘inverts’ to layer based relative acoustic/elastic properties by shaping the seismic reflectivity data to its corresponding earth impedance spectrum.
Model-based inversion
Post-stack model based inversion that takes seismic reflectivity data and inverts to its corresponding absolute impedance (AI, SI, EI etc) given a low frequency background model and corresponding.
Delivery inverter
Direct access to Delivery’s petro-physical inversion.
Stochastic inversion
Post stack and joint inversion performed on a stratigraphic grid at high resolution to generate multiple equi-probable realisations of impedance for reservoir property and uncertainty analysis.
Band-limited inversion
A simple inversion technique that takes seismic reflectivity data and inverts to corresponding absolute and relative impedance properties by de-convolving the wavelet directly.
AVO inversion
A variety of published reflectivity algorithms that allows the user to invert pre-stack seismic reflectivity data to AVO products such as P-wave, S-wave and Density reflectivity.