Heterogeneities characterization from velocity logs using multifractional Brownian motion.

S Gaci, N Zaourar - Arabian Journal of Geosciences, 2011 - search.ebscohost.com
Well logs provide additional information from the borehole that cannot be derived from other
subsurface investigations. Their analysis may bring supplementary features about the …

A grey system approach for estimating the hölderian regularity with an application to algerian well log data

S Gaci, O Nicolis - Fractal and Fractional, 2021 - mdpi.com
The Hölderian regularity is an important mathematical feature of a signal, connected with the
physical nature of the measured parameter. Many algorithms have been proposed in …

Two-dimensional multifractional Brownian motion-based investigation of heterogeneities from a core image

S Gaci, N Zaourar - Advances in Data, Methods, Models and …, 2011 - books.google.com
A core sample is a cylindrical section obtained by driving a hollow tube into the undisturbed
medium and withdrawing it with its content. In practice, the sample is pushed more or less …

Fractal dynamics of geomagnetic storms

N Zaourar, M Hamoudi, M Holschneider… - Arabian Journal of …, 2013 - Springer
We explore fluctuations of the horizontal component of the Earth's magnetic field to identify
scaling behaviour of the temporal variability in geomagnetic data recorded by the …

Wavelet leader-based multifractal analysis for characterizing subsurface heterogeneities using velocity logs

S Amoura, S Gaci, MA Bounif - 2022 2nd International …, 2022 - ieeexplore.ieee.org
In petroleum engineering, well logs are the key to characterize a hydrocarbon reservoir, and
to extract meaningful features related to the lithology and the type of fluids present in the …

وصف تغايرات من تسجيلات السرعة باستخدام الحركة البراونية الكسرية المتعدّدة

S Gaci, N Zaourar - Arabian Journal of Geosciences, 2011 - Springer
خلاصة البيانات المسجلة في بئر (Borehole logs) توفر معلومات إضافية لا يمكن لها أن تستنتج
من تحقيقات تحت سطحية أخرى. وتحليلها قد يؤدّي إلى استخلاص ميزات تكميلية حول تغايرات …

[引用][C] Analyse non linéaire et non stationnaire des signaux géophysiques

S Amoura - 2021