Browsing NTNU Open by Author "Chawshin, Kurdistan"
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Automated Lithology Classification Employing Whole Core CT-Scans
Chawshin, Kurdistan (Doctoral theses at NTNU;2021:316, Doctoral thesis, 2021)This thesis evaluates the application of artificial intelligence to detect rock properties from whole core computed tomography (CT) scan images of wells on the Norwegian continental shelf. Whole core CT-scan images provide ... -
Automated porosity estimation using CT-scans of extracted core data
Chawshin, Kurdistan; Berg, Carl Fredrik; Varagnolo, Damiano; Lopez, Olivier (Peer reviewed; Journal article, 2022)Estimation of porosity at a millimeter scale would be an order of magnitude finer resolution than traditional logging techniques. This enables proper description of reservoirs with thin layers and fine scale heterogeneities. ... -
Classifying Lithofacies from Textural Features in Whole Core CT-Scan Images
Chawshin, Kurdistan; Gonzalez, Andres; Berg, Carl Fredrik; Varagnolo, Damiano; Heidari, Zoya; Lopez, Olivier (Peer reviewed; Journal article, 2021)X-ray computerized tomography (CT) is a nondestructive method of providing information about the internal composition and structure of whole core reservoir samples. In this study we propose a method to classify lithology. ... -
Hierarchical Clustering Combination and an Algorithm to Solve the Tanglegram Layout Problem
Nguyen, Nghia (Master thesis, 2021)I petroleumsgeologifeltet har ulike tilnærminger til maskinlæring vist at det finnes et substansielt potensial som kan supplere og på sikt erstatte konvensjonelle og arbeidsintensive metoder. Noen forfattere har for eksempel ... -
Lithology classification of whole core CT scans using convolutional neural networks
Chawshin, Kurdistan; Berg, Carl Fredrik; Varagnolo, Damiano; Lopez, Olivier (Journal article; Peer reviewed, 2021) -
Lithology classification of whole core CT scans using convolutional neural networks
Chawshin, Kurdistan; Berg, Carl Fredrik; Varagnolo, Damiano; Lopez, Olivier (Peer reviewed; Journal article, 2021)X-ray computerized tomography (CT) images as digital representations of whole cores can provide valuable information on the composition and internal structure of cores extracted from wells. Incorporation of millimeter-scale ... -
Resistivity Estimation Using Convolutional Neural Networks
Bui, Richard Che (Master thesis, 2021)Denne oppgaven undersøker egnetheten av å anvende 2D tverrsnitt av 3D kjerneprøver i form av CT-scan data sammen med konvolusjonelle nevrale nettverk(CNN) for å bygge modeller for prediksjon av resistivitet. En av de viktige ... -
Shuffle & untangle: novel untangle methods for solving the tanglegram layout problem
Nguyen, van Nghia; Chawshin, Kurdistan; Berg, Carl Fredrik; Varagnolo, Damiano (Peer reviewed; Journal article, 2022)Motivation A tanglegram is a plot of two-tree-like diagrams, one facing the other, and having their labels connected by inter-tree edges. These two trees, which could be both phylogenetic trees and dendrograms stemming ...