A public lecture by Steve Tyson on 'Spatial Analysis and Estimation of Petrophysical Properties', organised by the Faculty of Engineering, Universiti Teknologi Brunei (UTB), was held yesterday at the Lecture Theatre 2, said a press release.

Steve Tyson, a professor from The University of Queensland in Australia, has worked in a range of subsurface roles, specialising in modelling, gridding, up-scaling and spatial statistics.

During this time, he developed a number of algorithms to improve model quality and quantify model uncertainty.

Since 2013, Professor Tyson has been the Chair of Subsurface Modelling in the Centre for Coal Seam Gas and the Director of the Centre for Geoscience Computing in the School of Earth Sciences, both at The University of Queensland.

He oversees more than $3.5 million of research projects in the geosciences, covering geophysics, geostatistics, geology, uncertainty modelling and data analytics.

In his talk, he discussed the existing geostatistics algorithms based on the kriging matrix that is shown to underestimate the connectivity of extreme values because they assume a linear spatial dependence model.

He also explained the reasons why most spatial variables in geoscience do not have a linear spatial dependence, even after monotonic transformations, and the impact of this in the estimation of petrophysical properties.

More recent techniques such as multiple-point statlstlcs and non-linear geostatistics have been developed to overcome limitations and each of the techniques has advantages and disadvantages which were also discussed.

The talk also offered the opportunity to consider new concepts in geostatistical thinking and determine their applicability to the petroleum industry.

Source:
@BRUDIRECT.COM

by BruDirect.com

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