Incorporating prior information into seismic impedance inversion using fuzzy clustering technique
MetadataShow full item record
In this research we use the fuzzy c-means (FCM) clustering technique to add petrophysical information from borehole data to model-based seismic impedance inversion. Model based inversion is a common seismic impedance inversion algorithm because it integrates low frequency data from boreholes and is robust. However, beyond the borehole the solutions are as non-unique as many general geophysical inversion problems and output depends greatly on the initial model. Our approach incorporates prior information from well log or core measurement to build a more realizable earth model by using FCM clustering on the petrophysical measurements. This approach tends to produce earth models with less parameter variation and is well suited for crystalline, or hard rock, inversion where there are only a few distinctive rocks units, but considerable structural complexity. Using synthetic examples we show that our method can effectively recover the true model despite structural complexity. The application to real data from the Kevitsa Ni-Cu-PGE (platinum group elements) deposit in northern Finland shows that our inversion results are consistent with well log data and produces impedance models that are more interpretable than the seismic image alone.
Showing items related by title, author, creator and subject.
Harrison, Christopher Bernard (2009)The use of seismic methods in hard rock environments in Western Australia for mineral exploration is a new and burgeoning technology. Traditionally, mineral exploration has relied upon potential field methods and surface ...
A new co-operative inversion strategy via fuzzy clustering technique applied to seismic and magnetotelluric dataThong Kieu, D.; Kepic, Anton (2015)Geophysical inversion produces very useful images of earth parameters; however, inversion results usually suffer from inherent non-uniqueness: many subsurface models with different structures and parameters can explain ...
Cooperative joint inversion of 3D seismic and magnetotelluric data: With application in a mineral provinceTakam-Takougang, Eric; Harris, Brett; Kepic, Anton; Le, Cuong (2015)The integration of different geophysical data has the potential to provide more accurate estimate of subsurface rock properties. Several methodologies and attempts have been developed over the years with the objective of ...